/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-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 22:27:05,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 22:27:05,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 22:27:05,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 22:27:05,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 22:27:05,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 22:27:05,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 22:27:05,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 22:27:05,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 22:27:05,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 22:27:05,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 22:27:05,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 22:27:05,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 22:27:05,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 22:27:05,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 22:27:05,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 22:27:05,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 22:27:05,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 22:27:05,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 22:27:05,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 22:27:05,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 22:27:05,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 22:27:05,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 22:27:05,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 22:27:05,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 22:27:05,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 22:27:05,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 22:27:05,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 22:27:05,181 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 [2021-03-24 22:27:05,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 22:27:05,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 22:27:05,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 22:27:05,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 22:27:05,215 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 22:27:05,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 22:27:05,215 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 22:27:05,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 22:27:05,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 22:27:05,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 22:27:05,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 22:27:05,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 22:27:05,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 22:27:05,217 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 22:27:05,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 22:27:05,217 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 22:27:05,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 22:27:05,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 22:27:05,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 22:27:05,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 22:27:05,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 22:27:05,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 22:27:05,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 22:27:05,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 22:27:05,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 22:27:05,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 22:27:05,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 22:27:05,219 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 22:27:05,219 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 22:27:05,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 22:27:05,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 22:27:05,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 22:27:05,557 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 22:27:05,557 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 22:27:05,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_14.bpl [2021-03-24 22:27:05,559 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_14.bpl' [2021-03-24 22:27:05,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 22:27:05,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 22:27:05,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 22:27:05,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 22:27:05,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 22:27:05,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:27:05" (1/1) ... [2021-03-24 22:27:05,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:27:05" (1/1) ... [2021-03-24 22:27:05,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 22:27:05,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 22:27:05,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 22:27:05,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 22:27:05,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:27:05" (1/1) ... [2021-03-24 22:27:05,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:27:05" (1/1) ... [2021-03-24 22:27:05,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:27:05" (1/1) ... [2021-03-24 22:27:05,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:27:05" (1/1) ... [2021-03-24 22:27:05,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:27:05" (1/1) ... [2021-03-24 22:27:05,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:27:05" (1/1) ... [2021-03-24 22:27:05,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:27:05" (1/1) ... [2021-03-24 22:27:05,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 22:27:05,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 22:27:05,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 22:27:05,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 22:27:05,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:27:05" (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 [2021-03-24 22:27:05,687 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-24 22:27:05,687 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-24 22:27:05,687 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-24 22:27:05,687 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-24 22:27:05,688 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-24 22:27:05,688 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-24 22:27:05,688 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-24 22:27:05,688 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-24 22:27:05,688 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-24 22:27:05,688 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-24 22:27:05,688 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-24 22:27:05,688 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-24 22:27:05,689 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-24 22:27:05,689 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-24 22:27:05,689 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-24 22:27:05,689 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-03-24 22:27:05,689 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-03-24 22:27:05,689 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-03-24 22:27:05,689 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 22:27:05,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 22:27:05,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 22:27:05,690 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-03-24 22:27:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-03-24 22:27:05,690 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-03-24 22:27:05,690 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-24 22:27:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-24 22:27:05,690 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-24 22:27:05,690 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-03-24 22:27:05,691 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-03-24 22:27:05,691 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-03-24 22:27:05,691 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-24 22:27:05,691 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-24 22:27:05,691 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-24 22:27:05,691 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-03-24 22:27:05,691 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-03-24 22:27:05,691 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-03-24 22:27:05,691 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-24 22:27:05,692 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-24 22:27:05,692 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-24 22:27:05,692 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-03-24 22:27:05,692 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-03-24 22:27:05,692 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-03-24 22:27:05,692 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-24 22:27:05,692 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-24 22:27:05,692 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-24 22:27:05,693 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 22:27:05,896 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 22:27:05,896 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 22:27:05,898 INFO L202 PluginConnector]: Adding new model example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:27:05 BoogieIcfgContainer [2021-03-24 22:27:05,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 22:27:05,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 22:27:05,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 22:27:05,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 22:27:05,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:27:05" (1/2) ... [2021-03-24 22:27:05,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b18a91 and model type example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:27:05, skipping insertion in model container [2021-03-24 22:27:05,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:27:05" (2/2) ... [2021-03-24 22:27:05,903 INFO L111 eAbstractionObserver]: Analyzing ICFG example_14.bpl [2021-03-24 22:27:05,921 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 22:27:05,924 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 22:27:05,924 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 22:27:06,248 INFO L149 ThreadInstanceAdder]: Constructed 196 joinOtherThreadTransitions. [2021-03-24 22:27:06,266 INFO L253 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-03-24 22:27:06,284 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 22:27:06,284 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 22:27:06,284 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 22:27:06,284 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 22:27:06,284 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 22:27:06,284 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 22:27:06,284 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 22:27:06,285 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 22:27:06,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 255 transitions, 1168 flow [2021-03-24 22:27:14,590 INFO L129 PetriNetUnfolder]: 98305/114733 cut-off events. [2021-03-24 22:27:14,591 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-03-24 22:27:15,415 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. [2021-03-24 22:27:15,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 255 transitions, 1168 flow [2021-03-24 22:27:16,235 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 239 transitions, 1108 flow [2021-03-24 22:27:16,236 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 22:27:16,248 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 239 transitions, 1108 flow [2021-03-24 22:27:16,251 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 239 transitions, 1108 flow [2021-03-24 22:27:16,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 239 transitions, 1108 flow [2021-03-24 22:27:23,255 INFO L129 PetriNetUnfolder]: 98305/114731 cut-off events. [2021-03-24 22:27:23,255 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-03-24 22:27:23,967 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. [2021-03-24 22:27:26,076 INFO L142 LiptonReduction]: Number of co-enabled transitions 10556 [2021-03-24 22:27:26,531 INFO L154 LiptonReduction]: Checked pairs total: 2821 [2021-03-24 22:27:26,532 INFO L156 LiptonReduction]: Total number of compositions: 14 [2021-03-24 22:27:26,533 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10298 [2021-03-24 22:27:32,219 INFO L129 PetriNetUnfolder]: 98305/114716 cut-off events. [2021-03-24 22:27:32,220 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-03-24 22:27:32,220 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:27:32,221 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:27:32,221 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]=== [2021-03-24 22:27:32,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:27:32,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1070435327, now seen corresponding path program 1 times [2021-03-24 22:27:32,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:27:32,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430100249] [2021-03-24 22:27:32,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:27:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:27:32,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:32,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:32,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:32,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:27:32,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:32,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:27:32,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430100249] [2021-03-24 22:27:32,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:27:32,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:27:32,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407764804] [2021-03-24 22:27:32,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:27:32,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:27:32,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:27:32,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:27:32,376 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-24 22:27:32,381 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) [2021-03-24 22:27:32,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:27:32,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-24 22:27:32,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:27:39,857 INFO L129 PetriNetUnfolder]: 94418/110452 cut-off events. [2021-03-24 22:27:39,857 INFO L130 PetriNetUnfolder]: For 127186/127186 co-relation queries the response was YES. [2021-03-24 22:27:40,393 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. [2021-03-24 22:27:40,956 INFO L132 encePairwiseOnDemand]: 264/269 looper letters, 10 selfloop transitions, 1 changer transitions 0/221 dead transitions. [2021-03-24 22:27:40,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 221 transitions, 1082 flow [2021-03-24 22:27:40,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:27:40,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:27:40,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-24 22:27:40,967 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-24 22:27:40,968 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-24 22:27:40,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-24 22:27:40,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:27:40,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-24 22:27:40,976 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) [2021-03-24 22:27:40,981 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) [2021-03-24 22:27:40,981 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) [2021-03-24 22:27:40,983 INFO L185 Difference]: Start difference. First operand has 86 places, 225 transitions, 1080 flow. Second operand 3 states and 777 transitions. [2021-03-24 22:27:40,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 221 transitions, 1082 flow [2021-03-24 22:27:41,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 221 transitions, 670 flow, removed 0 selfloop flow, removed 28 redundant places. [2021-03-24 22:27:41,755 INFO L241 Difference]: Finished difference. Result has 60 places, 221 transitions, 650 flow [2021-03-24 22:27:41,756 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=60, PETRI_TRANSITIONS=221} [2021-03-24 22:27:41,757 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -26 predicate places. [2021-03-24 22:27:41,757 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 221 transitions, 650 flow [2021-03-24 22:27:41,758 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) [2021-03-24 22:27:41,758 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:27:41,758 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:27:41,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 22:27:41,758 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]=== [2021-03-24 22:27:41,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:27:41,759 INFO L82 PathProgramCache]: Analyzing trace with hash 69320485, now seen corresponding path program 1 times [2021-03-24 22:27:41,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:27:41,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864155780] [2021-03-24 22:27:41,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:27:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:27:41,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:41,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:41,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:41,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:27:41,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:41,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:27:41,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864155780] [2021-03-24 22:27:41,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:27:41,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:27:41,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560852867] [2021-03-24 22:27:41,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:27:41,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:27:41,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:27:41,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:27:41,790 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-24 22:27:41,791 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) [2021-03-24 22:27:41,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:27:41,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-24 22:27:41,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:27:43,686 INFO L129 PetriNetUnfolder]: 43300/51599 cut-off events. [2021-03-24 22:27:43,686 INFO L130 PetriNetUnfolder]: For 7893/7893 co-relation queries the response was YES. [2021-03-24 22:27:43,810 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. [2021-03-24 22:27:43,968 INFO L132 encePairwiseOnDemand]: 258/269 looper letters, 4 selfloop transitions, 1 changer transitions 0/211 dead transitions. [2021-03-24 22:27:43,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 211 transitions, 630 flow [2021-03-24 22:27:43,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:27:43,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:27:43,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-24 22:27:43,970 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-24 22:27:43,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-24 22:27:43,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-24 22:27:43,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:27:43,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-24 22:27:43,972 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) [2021-03-24 22:27:43,974 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) [2021-03-24 22:27:43,974 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) [2021-03-24 22:27:43,974 INFO L185 Difference]: Start difference. First operand has 60 places, 221 transitions, 650 flow. Second operand 3 states and 777 transitions. [2021-03-24 22:27:43,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 211 transitions, 630 flow [2021-03-24 22:27:43,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 211 transitions, 629 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:27:43,986 INFO L241 Difference]: Finished difference. Result has 61 places, 211 transitions, 621 flow [2021-03-24 22:27:43,986 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=621, PETRI_PLACES=61, PETRI_TRANSITIONS=211} [2021-03-24 22:27:43,987 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -25 predicate places. [2021-03-24 22:27:43,987 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 211 transitions, 621 flow [2021-03-24 22:27:43,987 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) [2021-03-24 22:27:43,987 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:27:43,987 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:27:43,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 22:27:43,988 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]=== [2021-03-24 22:27:43,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:27:43,988 INFO L82 PathProgramCache]: Analyzing trace with hash 222589655, now seen corresponding path program 1 times [2021-03-24 22:27:43,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:27:43,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214916662] [2021-03-24 22:27:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:27:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:27:44,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:44,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:44,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:44,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:27:44,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:44,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:27:44,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214916662] [2021-03-24 22:27:44,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:27:44,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:27:44,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931988270] [2021-03-24 22:27:44,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:27:44,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:27:44,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:27:44,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:27:44,041 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-24 22:27:44,042 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) [2021-03-24 22:27:44,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:27:44,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-24 22:27:44,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:27:45,808 INFO L129 PetriNetUnfolder]: 37404/44976 cut-off events. [2021-03-24 22:27:45,808 INFO L130 PetriNetUnfolder]: For 3943/3943 co-relation queries the response was YES. [2021-03-24 22:27:45,898 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. [2021-03-24 22:27:46,043 INFO L132 encePairwiseOnDemand]: 263/269 looper letters, 9 selfloop transitions, 1 changer transitions 0/206 dead transitions. [2021-03-24 22:27:46,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 206 transitions, 626 flow [2021-03-24 22:27:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:27:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:27:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-24 22:27:46,045 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-24 22:27:46,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-24 22:27:46,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-24 22:27:46,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:27:46,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-24 22:27:46,048 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) [2021-03-24 22:27:46,049 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) [2021-03-24 22:27:46,050 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) [2021-03-24 22:27:46,050 INFO L185 Difference]: Start difference. First operand has 61 places, 211 transitions, 621 flow. Second operand 3 states and 777 transitions. [2021-03-24 22:27:46,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 206 transitions, 626 flow [2021-03-24 22:27:46,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 206 transitions, 625 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:27:46,056 INFO L241 Difference]: Finished difference. Result has 62 places, 206 transitions, 607 flow [2021-03-24 22:27:46,057 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=607, PETRI_PLACES=62, PETRI_TRANSITIONS=206} [2021-03-24 22:27:46,057 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -24 predicate places. [2021-03-24 22:27:46,057 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 206 transitions, 607 flow [2021-03-24 22:27:46,058 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) [2021-03-24 22:27:46,058 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:27:46,058 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:27:46,058 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 22:27:46,058 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]=== [2021-03-24 22:27:46,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:27:46,059 INFO L82 PathProgramCache]: Analyzing trace with hash -909626815, now seen corresponding path program 1 times [2021-03-24 22:27:46,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:27:46,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005692081] [2021-03-24 22:27:46,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:27:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:27:46,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:46,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:46,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:46,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:27:46,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:46,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:46,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:27:46,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005692081] [2021-03-24 22:27:46,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:27:46,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:27:46,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852775167] [2021-03-24 22:27:46,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:27:46,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:27:46,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:27:46,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:27:46,087 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-24 22:27:46,088 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) [2021-03-24 22:27:46,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:27:46,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-24 22:27:46,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:27:47,607 INFO L129 PetriNetUnfolder]: 36944/44460 cut-off events. [2021-03-24 22:27:47,607 INFO L130 PetriNetUnfolder]: For 3437/3437 co-relation queries the response was YES. [2021-03-24 22:27:47,776 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. [2021-03-24 22:27:47,937 INFO L132 encePairwiseOnDemand]: 265/269 looper letters, 11 selfloop transitions, 1 changer transitions 0/203 dead transitions. [2021-03-24 22:27:47,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 203 transitions, 622 flow [2021-03-24 22:27:47,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:27:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:27:47,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-24 22:27:47,939 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-24 22:27:47,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-24 22:27:47,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-24 22:27:47,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:27:47,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-24 22:27:47,942 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) [2021-03-24 22:27:47,943 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) [2021-03-24 22:27:47,944 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) [2021-03-24 22:27:47,944 INFO L185 Difference]: Start difference. First operand has 62 places, 206 transitions, 607 flow. Second operand 3 states and 777 transitions. [2021-03-24 22:27:47,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 203 transitions, 622 flow [2021-03-24 22:27:48,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 203 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:27:48,182 INFO L241 Difference]: Finished difference. Result has 63 places, 203 transitions, 599 flow [2021-03-24 22:27:48,183 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=599, PETRI_PLACES=63, PETRI_TRANSITIONS=203} [2021-03-24 22:27:48,183 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -23 predicate places. [2021-03-24 22:27:48,183 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 203 transitions, 599 flow [2021-03-24 22:27:48,183 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) [2021-03-24 22:27:48,183 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:27:48,184 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:27:48,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 22:27:48,184 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]=== [2021-03-24 22:27:48,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:27:48,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1579367267, now seen corresponding path program 1 times [2021-03-24 22:27:48,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:27:48,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322355973] [2021-03-24 22:27:48,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:27:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:27:48,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:48,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:48,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:48,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:27:48,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:48,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:27:48,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322355973] [2021-03-24 22:27:48,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:27:48,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:27:48,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360521967] [2021-03-24 22:27:48,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:27:48,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:27:48,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:27:48,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:27:48,210 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-24 22:27:48,211 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) [2021-03-24 22:27:48,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:27:48,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-24 22:27:48,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:27:48,876 INFO L129 PetriNetUnfolder]: 18413/22925 cut-off events. [2021-03-24 22:27:48,876 INFO L130 PetriNetUnfolder]: For 3391/3391 co-relation queries the response was YES. [2021-03-24 22:27:48,939 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. [2021-03-24 22:27:49,001 INFO L132 encePairwiseOnDemand]: 260/269 looper letters, 6 selfloop transitions, 1 changer transitions 0/195 dead transitions. [2021-03-24 22:27:49,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 195 transitions, 589 flow [2021-03-24 22:27:49,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:27:49,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:27:49,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-24 22:27:49,003 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-24 22:27:49,003 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-24 22:27:49,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-24 22:27:49,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:27:49,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-24 22:27:49,005 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) [2021-03-24 22:27:49,007 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) [2021-03-24 22:27:49,007 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) [2021-03-24 22:27:49,008 INFO L185 Difference]: Start difference. First operand has 63 places, 203 transitions, 599 flow. Second operand 3 states and 777 transitions. [2021-03-24 22:27:49,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 195 transitions, 589 flow [2021-03-24 22:27:49,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 195 transitions, 588 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:27:49,012 INFO L241 Difference]: Finished difference. Result has 64 places, 195 transitions, 576 flow [2021-03-24 22:27:49,013 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=576, PETRI_PLACES=64, PETRI_TRANSITIONS=195} [2021-03-24 22:27:49,013 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -22 predicate places. [2021-03-24 22:27:49,013 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 195 transitions, 576 flow [2021-03-24 22:27:49,014 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) [2021-03-24 22:27:49,014 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:27:49,014 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:27:49,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 22:27:49,014 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]=== [2021-03-24 22:27:49,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:27:49,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1559250705, now seen corresponding path program 1 times [2021-03-24 22:27:49,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:27:49,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197832486] [2021-03-24 22:27:49,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:27:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:27:49,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:49,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:49,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:49,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:27:49,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:49,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:49,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:27:49,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197832486] [2021-03-24 22:27:49,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:27:49,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:27:49,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698813860] [2021-03-24 22:27:49,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:27:49,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:27:49,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:27:49,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:27:49,062 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-24 22:27:49,062 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) [2021-03-24 22:27:49,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:27:49,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-24 22:27:49,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:27:49,878 INFO L129 PetriNetUnfolder]: 18349/22852 cut-off events. [2021-03-24 22:27:49,878 INFO L130 PetriNetUnfolder]: For 1806/1806 co-relation queries the response was YES. [2021-03-24 22:27:49,952 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. [2021-03-24 22:27:50,016 INFO L132 encePairwiseOnDemand]: 266/269 looper letters, 12 selfloop transitions, 1 changer transitions 0/193 dead transitions. [2021-03-24 22:27:50,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 193 transitions, 596 flow [2021-03-24 22:27:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:27:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:27:50,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-24 22:27:50,019 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-24 22:27:50,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-24 22:27:50,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-24 22:27:50,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:27:50,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-24 22:27:50,021 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) [2021-03-24 22:27:50,022 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) [2021-03-24 22:27:50,023 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) [2021-03-24 22:27:50,023 INFO L185 Difference]: Start difference. First operand has 64 places, 195 transitions, 576 flow. Second operand 3 states and 777 transitions. [2021-03-24 22:27:50,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 193 transitions, 596 flow [2021-03-24 22:27:50,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 193 transitions, 595 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:27:50,027 INFO L241 Difference]: Finished difference. Result has 65 places, 193 transitions, 571 flow [2021-03-24 22:27:50,027 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=65, PETRI_TRANSITIONS=193} [2021-03-24 22:27:50,027 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -21 predicate places. [2021-03-24 22:27:50,027 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 193 transitions, 571 flow [2021-03-24 22:27:50,028 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) [2021-03-24 22:27:50,032 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:27:50,032 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:27:50,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 22:27:50,032 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]=== [2021-03-24 22:27:50,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:27:50,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1245926739, now seen corresponding path program 1 times [2021-03-24 22:27:50,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:27:50,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675782202] [2021-03-24 22:27:50,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:27:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:27:50,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:50,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:50,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:50,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:27:50,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:50,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:27:50,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675782202] [2021-03-24 22:27:50,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:27:50,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:27:50,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065470760] [2021-03-24 22:27:50,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:27:50,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:27:50,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:27:50,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:27:50,082 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-24 22:27:50,083 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) [2021-03-24 22:27:50,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:27:50,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-24 22:27:50,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:27:50,611 INFO L129 PetriNetUnfolder]: 13596/17307 cut-off events. [2021-03-24 22:27:50,611 INFO L130 PetriNetUnfolder]: For 1798/1798 co-relation queries the response was YES. [2021-03-24 22:27:50,638 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. [2021-03-24 22:27:50,677 INFO L132 encePairwiseOnDemand]: 262/269 looper letters, 8 selfloop transitions, 1 changer transitions 0/187 dead transitions. [2021-03-24 22:27:50,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 187 transitions, 571 flow [2021-03-24 22:27:50,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:27:50,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:27:50,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-24 22:27:50,679 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-24 22:27:50,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-24 22:27:50,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-24 22:27:50,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:27:50,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-24 22:27:50,681 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) [2021-03-24 22:27:50,682 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) [2021-03-24 22:27:50,683 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) [2021-03-24 22:27:50,683 INFO L185 Difference]: Start difference. First operand has 65 places, 193 transitions, 571 flow. Second operand 3 states and 777 transitions. [2021-03-24 22:27:50,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 187 transitions, 571 flow [2021-03-24 22:27:50,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 187 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:27:50,686 INFO L241 Difference]: Finished difference. Result has 66 places, 187 transitions, 554 flow [2021-03-24 22:27:50,686 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=554, PETRI_PLACES=66, PETRI_TRANSITIONS=187} [2021-03-24 22:27:50,687 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -20 predicate places. [2021-03-24 22:27:50,687 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 187 transitions, 554 flow [2021-03-24 22:27:50,687 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) [2021-03-24 22:27:50,687 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:27:50,687 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:27:50,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 22:27:50,688 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]=== [2021-03-24 22:27:50,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:27:50,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1838825821, now seen corresponding path program 1 times [2021-03-24 22:27:50,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:27:50,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618924692] [2021-03-24 22:27:50,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:27:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:27:50,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:50,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:50,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:50,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:27:50,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:50,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:50,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:27:50,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618924692] [2021-03-24 22:27:50,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:27:50,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:27:50,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929180569] [2021-03-24 22:27:50,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:27:50,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:27:50,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:27:50,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:27:50,719 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-24 22:27:50,719 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) [2021-03-24 22:27:50,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:27:50,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-24 22:27:50,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:27:50,892 INFO L129 PetriNetUnfolder]: 4157/5613 cut-off events. [2021-03-24 22:27:50,893 INFO L130 PetriNetUnfolder]: For 1336/1336 co-relation queries the response was YES. [2021-03-24 22:27:50,903 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. [2021-03-24 22:27:50,915 INFO L132 encePairwiseOnDemand]: 257/269 looper letters, 3 selfloop transitions, 1 changer transitions 0/176 dead transitions. [2021-03-24 22:27:50,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 176 transitions, 529 flow [2021-03-24 22:27:50,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:27:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:27:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-24 22:27:50,917 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-24 22:27:50,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-24 22:27:50,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-24 22:27:50,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:27:50,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-24 22:27:50,919 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) [2021-03-24 22:27:50,920 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) [2021-03-24 22:27:50,921 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) [2021-03-24 22:27:50,921 INFO L185 Difference]: Start difference. First operand has 66 places, 187 transitions, 554 flow. Second operand 3 states and 777 transitions. [2021-03-24 22:27:50,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 176 transitions, 529 flow [2021-03-24 22:27:50,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 176 transitions, 528 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:27:50,924 INFO L241 Difference]: Finished difference. Result has 67 places, 176 transitions, 522 flow [2021-03-24 22:27:50,924 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=522, PETRI_PLACES=67, PETRI_TRANSITIONS=176} [2021-03-24 22:27:50,924 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -19 predicate places. [2021-03-24 22:27:50,924 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 176 transitions, 522 flow [2021-03-24 22:27:50,925 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) [2021-03-24 22:27:50,925 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:27:50,925 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:27:50,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 22:27:50,925 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]=== [2021-03-24 22:27:50,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:27:50,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1476202047, now seen corresponding path program 1 times [2021-03-24 22:27:50,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:27:50,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168411221] [2021-03-24 22:27:50,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:27:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:27:50,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:50,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:50,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:50,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:27:50,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:50,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:50,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:27:50,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168411221] [2021-03-24 22:27:50,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:27:50,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:27:50,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106978898] [2021-03-24 22:27:50,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:27:50,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:27:50,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:27:50,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:27:50,949 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-24 22:27:50,949 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) [2021-03-24 22:27:50,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:27:50,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-24 22:27:50,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:27:51,022 INFO L129 PetriNetUnfolder]: 1042/1539 cut-off events. [2021-03-24 22:27:51,022 INFO L130 PetriNetUnfolder]: For 468/468 co-relation queries the response was YES. [2021-03-24 22:27:51,025 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. [2021-03-24 22:27:51,029 INFO L132 encePairwiseOnDemand]: 255/269 looper letters, 1 selfloop transitions, 1 changer transitions 0/150 dead transitions. [2021-03-24 22:27:51,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 150 transitions, 448 flow [2021-03-24 22:27:51,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:27:51,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:27:51,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-24 22:27:51,031 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-24 22:27:51,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-24 22:27:51,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-24 22:27:51,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:27:51,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-24 22:27:51,033 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) [2021-03-24 22:27:51,035 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) [2021-03-24 22:27:51,035 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) [2021-03-24 22:27:51,035 INFO L185 Difference]: Start difference. First operand has 67 places, 176 transitions, 522 flow. Second operand 3 states and 777 transitions. [2021-03-24 22:27:51,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 150 transitions, 448 flow [2021-03-24 22:27:51,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 150 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:27:51,038 INFO L241 Difference]: Finished difference. Result has 68 places, 150 transitions, 445 flow [2021-03-24 22:27:51,038 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=445, PETRI_PLACES=68, PETRI_TRANSITIONS=150} [2021-03-24 22:27:51,038 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2021-03-24 22:27:51,038 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 150 transitions, 445 flow [2021-03-24 22:27:51,039 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) [2021-03-24 22:27:51,039 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:27:51,039 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:27:51,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 22:27:51,039 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]=== [2021-03-24 22:27:51,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:27:51,040 INFO L82 PathProgramCache]: Analyzing trace with hash 794448179, now seen corresponding path program 1 times [2021-03-24 22:27:51,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:27:51,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619624940] [2021-03-24 22:27:51,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:27:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:27:51,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:51,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:51,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:51,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:27:51,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:51,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:51,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:27:51,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619624940] [2021-03-24 22:27:51,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:27:51,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:27:51,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177558372] [2021-03-24 22:27:51,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:27:51,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:27:51,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:27:51,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:27:51,128 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-24 22:27:51,128 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) [2021-03-24 22:27:51,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:27:51,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-24 22:27:51,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:27:51,163 INFO L129 PetriNetUnfolder]: 249/455 cut-off events. [2021-03-24 22:27:51,164 INFO L130 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2021-03-24 22:27:51,165 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. [2021-03-24 22:27:51,166 INFO L132 encePairwiseOnDemand]: 259/269 looper letters, 4 selfloop transitions, 1 changer transitions 0/141 dead transitions. [2021-03-24 22:27:51,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 141 transitions, 428 flow [2021-03-24 22:27:51,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:27:51,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:27:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2021-03-24 22:27:51,168 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9615861214374225 [2021-03-24 22:27:51,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 776 transitions. [2021-03-24 22:27:51,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 776 transitions. [2021-03-24 22:27:51,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:27:51,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 776 transitions. [2021-03-24 22:27:51,170 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) [2021-03-24 22:27:51,171 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) [2021-03-24 22:27:51,171 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) [2021-03-24 22:27:51,171 INFO L185 Difference]: Start difference. First operand has 68 places, 150 transitions, 445 flow. Second operand 3 states and 776 transitions. [2021-03-24 22:27:51,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 141 transitions, 428 flow [2021-03-24 22:27:51,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 141 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:27:51,175 INFO L241 Difference]: Finished difference. Result has 69 places, 141 transitions, 419 flow [2021-03-24 22:27:51,175 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=419, PETRI_PLACES=69, PETRI_TRANSITIONS=141} [2021-03-24 22:27:51,176 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -17 predicate places. [2021-03-24 22:27:51,176 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 141 transitions, 419 flow [2021-03-24 22:27:51,176 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) [2021-03-24 22:27:51,176 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:27:51,176 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:27:51,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 22:27:51,176 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]=== [2021-03-24 22:27:51,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:27:51,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1456333061, now seen corresponding path program 1 times [2021-03-24 22:27:51,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:27:51,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641921475] [2021-03-24 22:27:51,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:27:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:27:51,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:51,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:51,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:51,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:27:51,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:51,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:27:51,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641921475] [2021-03-24 22:27:51,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:27:51,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:27:51,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295261211] [2021-03-24 22:27:51,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:27:51,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:27:51,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:27:51,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:27:51,224 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-24 22:27:51,224 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) [2021-03-24 22:27:51,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:27:51,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-24 22:27:51,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:27:51,264 INFO L129 PetriNetUnfolder]: 30/102 cut-off events. [2021-03-24 22:27:51,264 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2021-03-24 22:27:51,264 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. [2021-03-24 22:27:51,265 INFO L132 encePairwiseOnDemand]: 256/269 looper letters, 1 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2021-03-24 22:27:51,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 79 transitions, 237 flow [2021-03-24 22:27:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:27:51,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:27:51,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2021-03-24 22:27:51,270 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9615861214374225 [2021-03-24 22:27:51,270 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 776 transitions. [2021-03-24 22:27:51,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 776 transitions. [2021-03-24 22:27:51,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:27:51,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 776 transitions. [2021-03-24 22:27:51,272 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) [2021-03-24 22:27:51,273 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) [2021-03-24 22:27:51,273 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) [2021-03-24 22:27:51,273 INFO L185 Difference]: Start difference. First operand has 69 places, 141 transitions, 419 flow. Second operand 3 states and 776 transitions. [2021-03-24 22:27:51,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 79 transitions, 237 flow [2021-03-24 22:27:51,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 79 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:27:51,275 INFO L241 Difference]: Finished difference. Result has 70 places, 79 transitions, 234 flow [2021-03-24 22:27:51,275 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=70, PETRI_TRANSITIONS=79} [2021-03-24 22:27:51,281 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2021-03-24 22:27:51,281 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 79 transitions, 234 flow [2021-03-24 22:27:51,282 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) [2021-03-24 22:27:51,282 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:27:51,282 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:27:51,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 22:27:51,282 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]=== [2021-03-24 22:27:51,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:27:51,283 INFO L82 PathProgramCache]: Analyzing trace with hash 2123789327, now seen corresponding path program 1 times [2021-03-24 22:27:51,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:27:51,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735461694] [2021-03-24 22:27:51,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:27:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:27:51,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:51,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:51,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:51,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:27:51,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:51,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:51,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:27:51,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735461694] [2021-03-24 22:27:51,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:27:51,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:27:51,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914529190] [2021-03-24 22:27:51,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:27:51,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:27:51,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:27:51,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:27:51,339 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-24 22:27:51,339 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) [2021-03-24 22:27:51,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:27:51,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-24 22:27:51,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:27:51,366 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2021-03-24 22:27:51,366 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-24 22:27:51,366 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. [2021-03-24 22:27:51,366 INFO L132 encePairwiseOnDemand]: 261/269 looper letters, 1 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2021-03-24 22:27:51,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 45 transitions, 136 flow [2021-03-24 22:27:51,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:27:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:27:51,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 771 transitions. [2021-03-24 22:27:51,369 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9553903345724907 [2021-03-24 22:27:51,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 771 transitions. [2021-03-24 22:27:51,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 771 transitions. [2021-03-24 22:27:51,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:27:51,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 771 transitions. [2021-03-24 22:27:51,371 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) [2021-03-24 22:27:51,372 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) [2021-03-24 22:27:51,389 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) [2021-03-24 22:27:51,389 INFO L185 Difference]: Start difference. First operand has 70 places, 79 transitions, 234 flow. Second operand 3 states and 771 transitions. [2021-03-24 22:27:51,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 45 transitions, 136 flow [2021-03-24 22:27:51,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 45 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:27:51,404 INFO L241 Difference]: Finished difference. Result has 71 places, 45 transitions, 133 flow [2021-03-24 22:27:51,405 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=71, PETRI_TRANSITIONS=45} [2021-03-24 22:27:51,405 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2021-03-24 22:27:51,405 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 45 transitions, 133 flow [2021-03-24 22:27:51,405 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) [2021-03-24 22:27:51,405 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:27:51,405 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:27:51,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 22:27:51,406 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]=== [2021-03-24 22:27:51,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:27:51,406 INFO L82 PathProgramCache]: Analyzing trace with hash -228577559, now seen corresponding path program 1 times [2021-03-24 22:27:51,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:27:51,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494607493] [2021-03-24 22:27:51,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:27:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:27:51,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:51,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:27:51,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:51,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:27:51,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:27:51,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:27:51,600 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:27:51,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:27:51,623 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:27:51,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:27:51,680 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 22:27:51,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 22:27:51,733 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-24 22:27:51,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:27:51,797 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-03-24 22:27:51,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-24 22:27:51,878 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-24 22:27:51,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-24 22:27:51,931 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-24 22:27:51,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-24 22:27:52,004 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-24 22:27:52,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-24 22:27:52,093 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-24 22:27:52,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-24 22:27:52,196 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-24 22:27:52,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-24 22:27:52,302 INFO L142 QuantifierPusher]: treesize reduction 108, result has 48.8 percent of original size [2021-03-24 22:27:52,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-24 22:27:52,412 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-03-24 22:27:52,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-24 22:27:52,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:27:52,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494607493] [2021-03-24 22:27:52,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:27:52,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 22:27:52,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277331566] [2021-03-24 22:27:52,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-24 22:27:52,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:27:52,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-24 22:27:52,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-03-24 22:27:52,507 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-03-24 22:27:52,510 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) [2021-03-24 22:27:52,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:27:52,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-03-24 22:27:52,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:28:01,167 INFO L129 PetriNetUnfolder]: 135695/164069 cut-off events. [2021-03-24 22:28:01,167 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 22:28:02,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 323856 conditions, 164069 events. 135695/164069 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8255. Compared 848567 event pairs, 45057 based on Foata normal form. 1/162339 useless extension candidates. Maximal degree in co-relation 323846. Up to 57345 conditions per place. [2021-03-24 22:28:03,330 INFO L132 encePairwiseOnDemand]: 254/269 looper letters, 104 selfloop transitions, 14 changer transitions 0/148 dead transitions. [2021-03-24 22:28:03,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 148 transitions, 575 flow [2021-03-24 22:28:03,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-24 22:28:03,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-24 22:28:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3943 transitions. [2021-03-24 22:28:03,337 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9161245353159851 [2021-03-24 22:28:03,337 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3943 transitions. [2021-03-24 22:28:03,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3943 transitions. [2021-03-24 22:28:03,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:28:03,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3943 transitions. [2021-03-24 22:28:03,345 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) [2021-03-24 22:28:03,350 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) [2021-03-24 22:28:03,352 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) [2021-03-24 22:28:03,352 INFO L185 Difference]: Start difference. First operand has 71 places, 45 transitions, 133 flow. Second operand 16 states and 3943 transitions. [2021-03-24 22:28:03,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 148 transitions, 575 flow [2021-03-24 22:28:03,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 148 transitions, 574 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:28:03,359 INFO L241 Difference]: Finished difference. Result has 99 places, 58 transitions, 241 flow [2021-03-24 22:28:03,359 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=241, PETRI_PLACES=99, PETRI_TRANSITIONS=58} [2021-03-24 22:28:03,360 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, 13 predicate places. [2021-03-24 22:28:03,360 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 58 transitions, 241 flow [2021-03-24 22:28:03,361 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) [2021-03-24 22:28:03,361 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:28:03,361 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:28:03,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 22:28:03,361 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]=== [2021-03-24 22:28:03,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:28:03,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1044902637, now seen corresponding path program 2 times [2021-03-24 22:28:03,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:28:03,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523989348] [2021-03-24 22:28:03,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:28:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:28:03,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:28:03,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:28:03,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:28:03,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:28:03,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:28:03,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:28:03,482 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:28:03,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:28:03,496 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:28:03,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:28:03,516 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:28:03,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:28:03,542 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:28:03,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:28:03,576 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-24 22:28:03,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-24 22:28:03,625 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-24 22:28:03,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-24 22:28:03,678 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-24 22:28:03,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-24 22:28:03,736 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-24 22:28:03,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-24 22:28:03,798 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-24 22:28:03,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-24 22:28:03,881 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-24 22:28:03,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-24 22:28:03,974 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-03-24 22:28:03,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-24 22:28:04,071 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-03-24 22:28:04,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-24 22:28:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:28:04,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523989348] [2021-03-24 22:28:04,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:28:04,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 22:28:04,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512811764] [2021-03-24 22:28:04,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-24 22:28:04,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:28:04,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-24 22:28:04,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-03-24 22:28:04,155 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-03-24 22:28:04,158 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) [2021-03-24 22:28:04,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:28:04,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-03-24 22:28:04,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:28:30,051 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-03-24 22:28:31,290 INFO L129 PetriNetUnfolder]: 190870/258422 cut-off events. [2021-03-24 22:28:31,290 INFO L130 PetriNetUnfolder]: For 264262/291710 co-relation queries the response was YES. [2021-03-24 22:28:33,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 713273 conditions, 258422 events. 190870/258422 cut-off events. For 264262/291710 co-relation queries the response was YES. Maximal size of possible extension queue 11446. Compared 1874062 event pairs, 61443 based on Foata normal form. 1/256723 useless extension candidates. Maximal degree in co-relation 713249. Up to 80013 conditions per place. [2021-03-24 22:28:34,600 INFO L132 encePairwiseOnDemand]: 254/269 looper letters, 146 selfloop transitions, 20 changer transitions 0/196 dead transitions. [2021-03-24 22:28:34,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 196 transitions, 1208 flow [2021-03-24 22:28:34,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-24 22:28:34,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-24 22:28:34,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3943 transitions. [2021-03-24 22:28:34,605 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9161245353159851 [2021-03-24 22:28:34,605 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3943 transitions. [2021-03-24 22:28:34,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3943 transitions. [2021-03-24 22:28:34,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:28:34,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3943 transitions. [2021-03-24 22:28:34,611 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) [2021-03-24 22:28:34,615 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) [2021-03-24 22:28:34,616 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) [2021-03-24 22:28:34,616 INFO L185 Difference]: Start difference. First operand has 99 places, 58 transitions, 241 flow. Second operand 16 states and 3943 transitions. [2021-03-24 22:28:34,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 196 transitions, 1208 flow [2021-03-24 22:28:34,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 196 transitions, 1194 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:28:34,747 INFO L241 Difference]: Finished difference. Result has 127 places, 76 transitions, 438 flow [2021-03-24 22:28:34,747 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=438, PETRI_PLACES=127, PETRI_TRANSITIONS=76} [2021-03-24 22:28:34,747 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, 41 predicate places. [2021-03-24 22:28:34,747 INFO L480 AbstractCegarLoop]: Abstraction has has 127 places, 76 transitions, 438 flow [2021-03-24 22:28:34,748 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) [2021-03-24 22:28:34,748 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:28:34,748 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:28:34,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 22:28:34,749 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]=== [2021-03-24 22:28:34,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:28:34,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1588330511, now seen corresponding path program 3 times [2021-03-24 22:28:34,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:28:34,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042093082] [2021-03-24 22:28:34,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:28:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:28:34,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:28:34,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:28:34,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:28:34,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:28:34,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:28:34,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:28:34,833 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:28:34,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:28:34,846 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:28:34,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:28:34,864 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:28:34,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:28:34,886 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:28:34,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:28:34,914 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-24 22:28:34,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-24 22:28:34,955 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-24 22:28:34,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-24 22:28:35,008 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-24 22:28:35,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-24 22:28:35,066 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-24 22:28:35,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-24 22:28:35,132 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-24 22:28:35,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-24 22:28:35,212 INFO L142 QuantifierPusher]: treesize reduction 99, result has 49.0 percent of original size [2021-03-24 22:28:35,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-03-24 22:28:35,300 INFO L142 QuantifierPusher]: treesize reduction 108, result has 48.8 percent of original size [2021-03-24 22:28:35,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-24 22:28:35,395 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-03-24 22:28:35,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-24 22:28:35,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:28:35,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042093082] [2021-03-24 22:28:35,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:28:35,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 22:28:35,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038379213] [2021-03-24 22:28:35,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-24 22:28:35,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:28:35,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-24 22:28:35,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-03-24 22:28:35,480 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-03-24 22:28:35,482 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) [2021-03-24 22:28:35,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:28:35,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-03-24 22:28:35,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand