/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_16.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 22:29:21,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 22:29:21,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 22:29:21,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 22:29:21,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 22:29:21,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 22:29:21,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 22:29:21,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 22:29:21,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 22:29:21,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 22:29:21,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 22:29:21,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-03-24 22:29:21,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 22:29:21,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 22:29:21,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 22:29:21,709 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 22:29:21,739 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 22:29:21,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 22:29:21,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 22:29:21,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 22:29:21,742 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 22:29:21,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 22:29:21,742 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 22:29:21,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 22:29:21,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 22:29:21,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 22:29:21,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 22:29:21,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 22:29:21,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 22:29:21,743 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 22:29:21,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 22:29:21,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 22:29:21,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 22:29:21,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 22:29:21,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 22:29:21,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 22:29:21,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 22:29:21,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 22:29:21,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 22:29:21,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 22:29:21,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 22:29:21,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 22:29:21,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 22:29:21,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 22:29:21,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 22:29:21,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 22:29:21,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 22:29:21,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 22:29:21,984 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 22:29:21,985 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 22:29:21,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_16.bpl [2021-03-24 22:29:21,987 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_16.bpl' [2021-03-24 22:29:22,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 22:29:22,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 22:29:22,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 22:29:22,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 22:29:22,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 22:29:22,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:29:22" (1/1) ... [2021-03-24 22:29:22,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:29:22" (1/1) ... [2021-03-24 22:29:22,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 22:29:22,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 22:29:22,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 22:29:22,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 22:29:22,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:29:22" (1/1) ... [2021-03-24 22:29:22,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:29:22" (1/1) ... [2021-03-24 22:29:22,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:29:22" (1/1) ... [2021-03-24 22:29:22,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:29:22" (1/1) ... [2021-03-24 22:29:22,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:29:22" (1/1) ... [2021-03-24 22:29:22,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:29:22" (1/1) ... [2021-03-24 22:29:22,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:29:22" (1/1) ... [2021-03-24 22:29:22,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 22:29:22,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 22:29:22,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 22:29:22,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 22:29:22,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:29:22" (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 22:29:22,108 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_14 given in one single declaration [2021-03-24 22:29:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure set_14 [2021-03-24 22:29:22,108 INFO L138 BoogieDeclarations]: Found implementation of procedure set_14 [2021-03-24 22:29:22,109 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_15 given in one single declaration [2021-03-24 22:29:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure set_15 [2021-03-24 22:29:22,110 INFO L138 BoogieDeclarations]: Found implementation of procedure set_15 [2021-03-24 22:29:22,110 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-24 22:29:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-24 22:29:22,110 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-24 22:29:22,110 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-24 22:29:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-24 22:29:22,110 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-24 22:29:22,110 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-24 22:29:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-24 22:29:22,110 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-24 22:29:22,110 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-24 22:29:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-24 22:29:22,111 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-24 22:29:22,112 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-24 22:29:22,112 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-24 22:29:22,112 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-24 22:29:22,112 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-03-24 22:29:22,112 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-03-24 22:29:22,112 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-03-24 22:29:22,112 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 22:29:22,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 22:29:22,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 22:29:22,113 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-03-24 22:29:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-03-24 22:29:22,114 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-03-24 22:29:22,114 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-24 22:29:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-24 22:29:22,114 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-24 22:29:22,114 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-03-24 22:29:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-03-24 22:29:22,114 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-03-24 22:29:22,115 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-24 22:29:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-24 22:29:22,115 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-24 22:29:22,115 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-03-24 22:29:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-03-24 22:29:22,115 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-03-24 22:29:22,115 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-24 22:29:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-24 22:29:22,115 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-24 22:29:22,115 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-03-24 22:29:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-03-24 22:29:22,115 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-03-24 22:29:22,116 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-24 22:29:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-24 22:29:22,116 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-24 22:29:22,116 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 22:29:22,282 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 22:29:22,282 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 22:29:22,283 INFO L202 PluginConnector]: Adding new model example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:29:22 BoogieIcfgContainer [2021-03-24 22:29:22,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 22:29:22,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 22:29:22,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 22:29:22,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 22:29:22,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:29:22" (1/2) ... [2021-03-24 22:29:22,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdda95a and model type example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:29:22, skipping insertion in model container [2021-03-24 22:29:22,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:29:22" (2/2) ... [2021-03-24 22:29:22,288 INFO L111 eAbstractionObserver]: Analyzing ICFG example_16.bpl [2021-03-24 22:29:22,291 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 22:29:22,293 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 22:29:22,293 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 22:29:22,492 INFO L149 ThreadInstanceAdder]: Constructed 256 joinOtherThreadTransitions. [2021-03-24 22:29:22,504 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-03-24 22:29:22,516 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 22:29:22,516 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 22:29:22,516 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 22:29:22,516 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 22:29:22,516 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 22:29:22,516 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 22:29:22,516 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 22:29:22,516 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 22:29:22,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 323 transitions, 1494 flow [2021-03-24 22:29:57,106 INFO L129 PetriNetUnfolder]: 458753/524339 cut-off events. [2021-03-24 22:29:57,107 INFO L130 PetriNetUnfolder]: For 524288/524288 co-relation queries the response was YES. [2021-03-24 22:30:00,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1048676 conditions, 524339 events. 458753/524339 cut-off events. For 524288/524288 co-relation queries the response was YES. Maximal size of possible extension queue 13495. Compared 2150347 event pairs, 0 based on Foata normal form. 0/524338 useless extension candidates. Maximal degree in co-relation 491597. Up to 102960 conditions per place. [2021-03-24 22:30:00,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 323 transitions, 1494 flow [2021-03-24 22:30:03,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 305 transitions, 1426 flow [2021-03-24 22:30:03,506 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 22:30:03,514 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 305 transitions, 1426 flow [2021-03-24 22:30:03,516 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 305 transitions, 1426 flow [2021-03-24 22:30:03,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 114 places, 305 transitions, 1426 flow [2021-03-24 22:30:42,674 INFO L129 PetriNetUnfolder]: 458753/524337 cut-off events. [2021-03-24 22:30:42,674 INFO L130 PetriNetUnfolder]: For 524288/524288 co-relation queries the response was YES. [2021-03-24 22:30:46,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1048674 conditions, 524337 events. 458753/524337 cut-off events. For 524288/524288 co-relation queries the response was YES. Maximal size of possible extension queue 13495. Compared 2255750 event pairs, 0 based on Foata normal form. 0/524337 useless extension candidates. Maximal degree in co-relation 491597. Up to 102960 conditions per place. [2021-03-24 22:30:57,739 INFO L142 LiptonReduction]: Number of co-enabled transitions 15840 [2021-03-24 22:30:58,934 INFO L154 LiptonReduction]: Checked pairs total: 4200 [2021-03-24 22:30:58,934 INFO L156 LiptonReduction]: Total number of compositions: 16 [2021-03-24 22:30:58,936 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 55431 [2021-03-24 22:31:32,744 INFO L129 PetriNetUnfolder]: 458753/524320 cut-off events. [2021-03-24 22:31:32,744 INFO L130 PetriNetUnfolder]: For 524288/524288 co-relation queries the response was YES. [2021-03-24 22:31:32,744 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:31:32,745 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:31:32,745 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:31:32,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:31:32,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1566408029, now seen corresponding path program 1 times [2021-03-24 22:31:32,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:31:32,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127493885] [2021-03-24 22:31:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:31:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:31:32,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:31:32,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:31:32,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:31:32,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:31:32,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:31:32,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:31:32,846 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 22:31:32,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127493885] [2021-03-24 22:31:32,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:31:32,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:31:32,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818161730] [2021-03-24 22:31:32,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:31:32,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:31:32,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:31:32,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:31:32,862 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 22:31:32,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 289 transitions, 1394 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:31:32,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:31:32,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 22:31:32,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:31:49,397 INFO L129 PetriNetUnfolder]: 235058/272802 cut-off events. [2021-03-24 22:31:49,397 INFO L130 PetriNetUnfolder]: For 366130/366130 co-relation queries the response was YES. [2021-03-24 22:31:50,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 550566 conditions, 272802 events. 235058/272802 cut-off events. For 366130/366130 co-relation queries the response was YES. Maximal size of possible extension queue 7060. Compared 1345521 event pairs, 0 based on Foata normal form. 27824/300626 useless extension candidates. Maximal degree in co-relation 491551. Up to 51480 conditions per place. [2021-03-24 22:31:52,077 INFO L132 encePairwiseOnDemand]: 328/339 looper letters, 6 selfloop transitions, 1 changer transitions 0/279 dead transitions. [2021-03-24 22:31:52,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 279 transitions, 1358 flow [2021-03-24 22:31:52,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:31:52,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:31:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 22:31:52,087 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 22:31:52,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 22:31:52,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 22:31:52,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:31:52,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 22:31:52,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 22:31:52,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:31:52,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:31:52,105 INFO L185 Difference]: Start difference. First operand has 98 places, 289 transitions, 1394 flow. Second operand 3 states and 983 transitions. [2021-03-24 22:31:52,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 279 transitions, 1358 flow [2021-03-24 22:32:04,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 279 transitions, 834 flow, removed 0 selfloop flow, removed 32 redundant places. [2021-03-24 22:32:04,992 INFO L241 Difference]: Finished difference. Result has 68 places, 279 transitions, 822 flow [2021-03-24 22:32:04,993 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=822, PETRI_PLACES=68, PETRI_TRANSITIONS=279} [2021-03-24 22:32:04,994 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -30 predicate places. [2021-03-24 22:32:04,994 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 279 transitions, 822 flow [2021-03-24 22:32:04,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:04,994 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:32:04,995 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:32:04,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 22:32:04,995 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:32:04,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:32:04,995 INFO L82 PathProgramCache]: Analyzing trace with hash -294847935, now seen corresponding path program 1 times [2021-03-24 22:32:04,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:32:04,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997800966] [2021-03-24 22:32:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:32:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:32:05,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:05,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:05,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:05,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:32:05,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:05,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:05,019 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 22:32:05,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997800966] [2021-03-24 22:32:05,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:32:05,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:32:05,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577311583] [2021-03-24 22:32:05,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:32:05,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:32:05,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:32:05,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:32:05,022 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 22:32:05,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 279 transitions, 822 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:05,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:32:05,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 22:32:05,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:32:10,400 INFO L129 PetriNetUnfolder]: 135672/160505 cut-off events. [2021-03-24 22:32:10,400 INFO L130 PetriNetUnfolder]: For 17855/17855 co-relation queries the response was YES. [2021-03-24 22:32:10,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165470 conditions, 160505 events. 135672/160505 cut-off events. For 17855/17855 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 799649 event pairs, 0 based on Foata normal form. 12911/173416 useless extension candidates. Maximal degree in co-relation 165443. Up to 24024 conditions per place. [2021-03-24 22:32:11,437 INFO L132 encePairwiseOnDemand]: 329/339 looper letters, 7 selfloop transitions, 1 changer transitions 0/270 dead transitions. [2021-03-24 22:32:11,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 270 transitions, 811 flow [2021-03-24 22:32:11,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:32:11,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:32:11,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 22:32:11,440 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 22:32:11,440 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 22:32:11,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 22:32:11,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:32:11,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 22:32:11,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 22:32:11,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:11,444 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:11,444 INFO L185 Difference]: Start difference. First operand has 68 places, 279 transitions, 822 flow. Second operand 3 states and 983 transitions. [2021-03-24 22:32:11,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 270 transitions, 811 flow [2021-03-24 22:32:11,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 270 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:32:11,462 INFO L241 Difference]: Finished difference. Result has 69 places, 270 transitions, 796 flow [2021-03-24 22:32:11,462 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=796, PETRI_PLACES=69, PETRI_TRANSITIONS=270} [2021-03-24 22:32:11,462 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -29 predicate places. [2021-03-24 22:32:11,463 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 270 transitions, 796 flow [2021-03-24 22:32:11,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:11,463 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:32:11,463 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:32:11,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 22:32:11,463 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:32:11,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:32:11,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1233565205, now seen corresponding path program 1 times [2021-03-24 22:32:11,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:32:11,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65858093] [2021-03-24 22:32:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:32:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:32:11,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:11,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:11,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:11,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:32:11,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:11,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:11,485 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 22:32:11,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65858093] [2021-03-24 22:32:11,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:32:11,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:32:11,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573371826] [2021-03-24 22:32:11,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:32:11,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:32:11,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:32:11,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:32:11,487 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 22:32:11,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 270 transitions, 796 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:11,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:32:11,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 22:32:11,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:32:16,637 INFO L129 PetriNetUnfolder]: 125350/149090 cut-off events. [2021-03-24 22:32:16,638 INFO L130 PetriNetUnfolder]: For 10756/10756 co-relation queries the response was YES. [2021-03-24 22:32:17,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158775 conditions, 149090 events. 125350/149090 cut-off events. For 10756/10756 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 747541 event pairs, 0 based on Foata normal form. 1093/150183 useless extension candidates. Maximal degree in co-relation 158750. Up to 24024 conditions per place. [2021-03-24 22:32:17,455 INFO L132 encePairwiseOnDemand]: 333/339 looper letters, 11 selfloop transitions, 1 changer transitions 0/265 dead transitions. [2021-03-24 22:32:17,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 265 transitions, 805 flow [2021-03-24 22:32:17,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:32:17,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:32:17,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 22:32:17,457 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 22:32:17,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 22:32:17,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 22:32:17,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:32:17,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 22:32:17,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 22:32:17,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:17,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:17,461 INFO L185 Difference]: Start difference. First operand has 69 places, 270 transitions, 796 flow. Second operand 3 states and 983 transitions. [2021-03-24 22:32:17,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 265 transitions, 805 flow [2021-03-24 22:32:17,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 265 transitions, 804 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:32:17,480 INFO L241 Difference]: Finished difference. Result has 70 places, 265 transitions, 782 flow [2021-03-24 22:32:17,480 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=782, PETRI_PLACES=70, PETRI_TRANSITIONS=265} [2021-03-24 22:32:17,480 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -28 predicate places. [2021-03-24 22:32:17,480 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 265 transitions, 782 flow [2021-03-24 22:32:17,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:17,481 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:32:17,481 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:32:17,481 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 22:32:17,481 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:32:17,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:32:17,482 INFO L82 PathProgramCache]: Analyzing trace with hash -861950085, now seen corresponding path program 1 times [2021-03-24 22:32:17,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:32:17,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367920714] [2021-03-24 22:32:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:32:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:32:17,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:17,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:17,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:17,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:32:17,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:17,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:17,518 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 22:32:17,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367920714] [2021-03-24 22:32:17,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:32:17,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:32:17,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029199442] [2021-03-24 22:32:17,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:32:17,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:32:17,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:32:17,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:32:17,520 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 22:32:17,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 265 transitions, 782 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:17,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:32:17,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 22:32:17,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:32:21,709 INFO L129 PetriNetUnfolder]: 96298/116241 cut-off events. [2021-03-24 22:32:21,710 INFO L130 PetriNetUnfolder]: For 9962/9962 co-relation queries the response was YES. [2021-03-24 22:32:22,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122924 conditions, 116241 events. 96298/116241 cut-off events. For 9962/9962 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 596103 event pairs, 0 based on Foata normal form. 3302/119543 useless extension candidates. Maximal degree in co-relation 122908. Up to 21840 conditions per place. [2021-03-24 22:32:22,333 INFO L132 encePairwiseOnDemand]: 331/339 looper letters, 9 selfloop transitions, 1 changer transitions 0/258 dead transitions. [2021-03-24 22:32:22,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 258 transitions, 781 flow [2021-03-24 22:32:22,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:32:22,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:32:22,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 22:32:22,335 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 22:32:22,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 22:32:22,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 22:32:22,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:32:22,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 22:32:22,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 22:32:22,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:22,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:22,339 INFO L185 Difference]: Start difference. First operand has 70 places, 265 transitions, 782 flow. Second operand 3 states and 983 transitions. [2021-03-24 22:32:22,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 258 transitions, 781 flow [2021-03-24 22:32:22,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 258 transitions, 780 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:32:22,357 INFO L241 Difference]: Finished difference. Result has 71 places, 258 transitions, 762 flow [2021-03-24 22:32:22,357 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=762, PETRI_PLACES=71, PETRI_TRANSITIONS=258} [2021-03-24 22:32:22,357 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -27 predicate places. [2021-03-24 22:32:22,357 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 258 transitions, 762 flow [2021-03-24 22:32:22,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:22,358 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:32:22,358 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:32:22,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 22:32:22,358 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:32:22,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:32:22,358 INFO L82 PathProgramCache]: Analyzing trace with hash -592466757, now seen corresponding path program 1 times [2021-03-24 22:32:22,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:32:22,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064114755] [2021-03-24 22:32:22,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:32:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:32:22,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:22,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:22,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:22,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:32:22,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:22,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:22,374 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 22:32:22,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064114755] [2021-03-24 22:32:22,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:32:22,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:32:22,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863719553] [2021-03-24 22:32:22,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:32:22,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:32:22,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:32:22,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:32:22,378 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 22:32:22,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 258 transitions, 762 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:22,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:32:22,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 22:32:22,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:32:25,258 INFO L129 PetriNetUnfolder]: 70668/86617 cut-off events. [2021-03-24 22:32:25,258 INFO L130 PetriNetUnfolder]: For 7684/7684 co-relation queries the response was YES. [2021-03-24 22:32:25,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91585 conditions, 86617 events. 70668/86617 cut-off events. For 7684/7684 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 449084 event pairs, 0 based on Foata normal form. 2740/89357 useless extension candidates. Maximal degree in co-relation 91569. Up to 21840 conditions per place. [2021-03-24 22:32:25,844 INFO L132 encePairwiseOnDemand]: 330/339 looper letters, 8 selfloop transitions, 1 changer transitions 0/250 dead transitions. [2021-03-24 22:32:25,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 250 transitions, 756 flow [2021-03-24 22:32:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:32:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:32:25,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 22:32:25,846 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 22:32:25,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 22:32:25,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 22:32:25,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:32:25,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 22:32:25,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 22:32:25,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:25,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:25,850 INFO L185 Difference]: Start difference. First operand has 71 places, 258 transitions, 762 flow. Second operand 3 states and 983 transitions. [2021-03-24 22:32:25,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 250 transitions, 756 flow [2021-03-24 22:32:25,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 250 transitions, 755 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:32:25,861 INFO L241 Difference]: Finished difference. Result has 72 places, 250 transitions, 739 flow [2021-03-24 22:32:25,861 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=739, PETRI_PLACES=72, PETRI_TRANSITIONS=250} [2021-03-24 22:32:25,861 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -26 predicate places. [2021-03-24 22:32:25,861 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 250 transitions, 739 flow [2021-03-24 22:32:25,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:25,862 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:32:25,862 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:32:25,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 22:32:25,862 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:32:25,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:32:25,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1871287281, now seen corresponding path program 1 times [2021-03-24 22:32:25,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:32:25,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349030069] [2021-03-24 22:32:25,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:32:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:32:25,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:25,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:25,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:25,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:32:25,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:25,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:25,895 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 22:32:25,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349030069] [2021-03-24 22:32:25,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:32:25,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:32:25,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536906365] [2021-03-24 22:32:25,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:32:25,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:32:25,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:32:25,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:32:25,897 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 22:32:25,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 250 transitions, 739 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:25,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:32:25,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 22:32:25,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:32:26,830 INFO L129 PetriNetUnfolder]: 22146/28336 cut-off events. [2021-03-24 22:32:26,831 INFO L130 PetriNetUnfolder]: For 5582/5582 co-relation queries the response was YES. [2021-03-24 22:32:26,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28937 conditions, 28336 events. 22146/28336 cut-off events. For 5582/5582 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 144830 event pairs, 0 based on Foata normal form. 5006/33342 useless extension candidates. Maximal degree in co-relation 28921. Up to 5460 conditions per place. [2021-03-24 22:32:26,917 INFO L132 encePairwiseOnDemand]: 326/339 looper letters, 4 selfloop transitions, 1 changer transitions 0/238 dead transitions. [2021-03-24 22:32:26,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 238 transitions, 713 flow [2021-03-24 22:32:26,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:32:26,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:32:26,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 22:32:26,919 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 22:32:26,919 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 22:32:26,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 22:32:26,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:32:26,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 22:32:26,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 22:32:26,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:26,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:26,923 INFO L185 Difference]: Start difference. First operand has 72 places, 250 transitions, 739 flow. Second operand 3 states and 983 transitions. [2021-03-24 22:32:26,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 238 transitions, 713 flow [2021-03-24 22:32:26,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 238 transitions, 712 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:32:26,927 INFO L241 Difference]: Finished difference. Result has 73 places, 238 transitions, 704 flow [2021-03-24 22:32:26,927 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=704, PETRI_PLACES=73, PETRI_TRANSITIONS=238} [2021-03-24 22:32:26,927 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -25 predicate places. [2021-03-24 22:32:26,927 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 238 transitions, 704 flow [2021-03-24 22:32:26,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:26,928 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:32:26,928 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:32:26,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 22:32:26,928 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:32:26,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:32:26,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1016495101, now seen corresponding path program 1 times [2021-03-24 22:32:26,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:32:26,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581835535] [2021-03-24 22:32:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:32:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:32:26,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:26,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:26,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:26,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:32:26,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:26,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:32:26,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581835535] [2021-03-24 22:32:26,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:32:26,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:32:26,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358456939] [2021-03-24 22:32:26,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:32:26,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:32:26,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:32:26,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:32:26,954 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 22:32:26,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 238 transitions, 704 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:26,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:32:26,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 22:32:26,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:32:27,270 INFO L129 PetriNetUnfolder]: 8415/11346 cut-off events. [2021-03-24 22:32:27,271 INFO L130 PetriNetUnfolder]: For 1959/1959 co-relation queries the response was YES. [2021-03-24 22:32:27,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11948 conditions, 11346 events. 8415/11346 cut-off events. For 1959/1959 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 57593 event pairs, 0 based on Foata normal form. 1383/12729 useless extension candidates. Maximal degree in co-relation 11932. Up to 1820 conditions per place. [2021-03-24 22:32:27,312 INFO L132 encePairwiseOnDemand]: 327/339 looper letters, 5 selfloop transitions, 1 changer transitions 0/227 dead transitions. [2021-03-24 22:32:27,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 227 transitions, 683 flow [2021-03-24 22:32:27,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:32:27,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:32:27,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 22:32:27,314 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 22:32:27,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:32:27,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 22:32:27,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:27,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:27,318 INFO L185 Difference]: Start difference. First operand has 73 places, 238 transitions, 704 flow. Second operand 3 states and 983 transitions. [2021-03-24 22:32:27,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 227 transitions, 683 flow [2021-03-24 22:32:27,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 227 transitions, 682 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:32:27,322 INFO L241 Difference]: Finished difference. Result has 74 places, 227 transitions, 672 flow [2021-03-24 22:32:27,322 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=672, PETRI_PLACES=74, PETRI_TRANSITIONS=227} [2021-03-24 22:32:27,322 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -24 predicate places. [2021-03-24 22:32:27,322 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 227 transitions, 672 flow [2021-03-24 22:32:27,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:27,323 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:32:27,323 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:32:27,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 22:32:27,323 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:32:27,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:32:27,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1214096417, now seen corresponding path program 1 times [2021-03-24 22:32:27,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:32:27,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373955484] [2021-03-24 22:32:27,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:32:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:32:27,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:27,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:32:27,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:27,340 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 22:32:27,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373955484] [2021-03-24 22:32:27,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:32:27,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:32:27,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467352546] [2021-03-24 22:32:27,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:32:27,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:32:27,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:32:27,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:32:27,341 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 22:32:27,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 227 transitions, 672 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:27,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:32:27,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 22:32:27,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:32:27,437 INFO L129 PetriNetUnfolder]: 2037/2985 cut-off events. [2021-03-24 22:32:27,438 INFO L130 PetriNetUnfolder]: For 795/795 co-relation queries the response was YES. [2021-03-24 22:32:27,443 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3133 conditions, 2985 events. 2037/2985 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 13857 event pairs, 0 based on Foata normal form. 674/3659 useless extension candidates. Maximal degree in co-relation 3117. Up to 315 conditions per place. [2021-03-24 22:32:27,448 INFO L132 encePairwiseOnDemand]: 325/339 looper letters, 3 selfloop transitions, 1 changer transitions 0/214 dead transitions. [2021-03-24 22:32:27,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 214 transitions, 641 flow [2021-03-24 22:32:27,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:32:27,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:32:27,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 22:32:27,450 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 22:32:27,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:32:27,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 22:32:27,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:27,453 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:27,453 INFO L185 Difference]: Start difference. First operand has 74 places, 227 transitions, 672 flow. Second operand 3 states and 983 transitions. [2021-03-24 22:32:27,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 214 transitions, 641 flow [2021-03-24 22:32:27,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 214 transitions, 640 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:32:27,456 INFO L241 Difference]: Finished difference. Result has 75 places, 214 transitions, 634 flow [2021-03-24 22:32:27,456 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=634, PETRI_PLACES=75, PETRI_TRANSITIONS=214} [2021-03-24 22:32:27,456 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -23 predicate places. [2021-03-24 22:32:27,456 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 214 transitions, 634 flow [2021-03-24 22:32:27,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:27,457 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:32:27,457 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:32:27,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 22:32:27,457 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:32:27,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:32:27,457 INFO L82 PathProgramCache]: Analyzing trace with hash -187755651, now seen corresponding path program 1 times [2021-03-24 22:32:27,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:32:27,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827268968] [2021-03-24 22:32:27,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:32:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:32:27,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:27,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:32:27,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:27,472 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 22:32:27,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827268968] [2021-03-24 22:32:27,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:32:27,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:32:27,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504844464] [2021-03-24 22:32:27,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:32:27,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:32:27,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:32:27,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:32:27,474 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 22:32:27,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 214 transitions, 634 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:27,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:32:27,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 22:32:27,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:32:27,582 INFO L129 PetriNetUnfolder]: 1988/2928 cut-off events. [2021-03-24 22:32:27,582 INFO L130 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2021-03-24 22:32:27,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3189 conditions, 2928 events. 1988/2928 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 13600 event pairs, 0 based on Foata normal form. 8/2936 useless extension candidates. Maximal degree in co-relation 3172. Up to 315 conditions per place. [2021-03-24 22:32:27,590 INFO L132 encePairwiseOnDemand]: 336/339 looper letters, 14 selfloop transitions, 1 changer transitions 0/212 dead transitions. [2021-03-24 22:32:27,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 212 transitions, 658 flow [2021-03-24 22:32:27,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:32:27,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:32:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 22:32:27,592 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 22:32:27,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:32:27,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 22:32:27,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:27,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:27,595 INFO L185 Difference]: Start difference. First operand has 75 places, 214 transitions, 634 flow. Second operand 3 states and 983 transitions. [2021-03-24 22:32:27,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 212 transitions, 658 flow [2021-03-24 22:32:27,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 212 transitions, 657 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:32:27,598 INFO L241 Difference]: Finished difference. Result has 76 places, 212 transitions, 629 flow [2021-03-24 22:32:27,598 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=629, PETRI_PLACES=76, PETRI_TRANSITIONS=212} [2021-03-24 22:32:27,599 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -22 predicate places. [2021-03-24 22:32:27,599 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 212 transitions, 629 flow [2021-03-24 22:32:27,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:27,599 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:32:27,599 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:32:27,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 22:32:27,599 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:32:27,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:32:27,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1319369611, now seen corresponding path program 1 times [2021-03-24 22:32:27,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:32:27,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579302432] [2021-03-24 22:32:27,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:32:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:32:27,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:27,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:32:27,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:27,613 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 22:32:27,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579302432] [2021-03-24 22:32:27,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:32:27,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:32:27,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901821749] [2021-03-24 22:32:27,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:32:27,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:32:27,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:32:27,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:32:27,614 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 22:32:27,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 212 transitions, 629 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:27,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:32:27,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 22:32:27,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:32:27,705 INFO L129 PetriNetUnfolder]: 1707/2584 cut-off events. [2021-03-24 22:32:27,705 INFO L130 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2021-03-24 22:32:27,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2790 conditions, 2584 events. 1707/2584 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12249 event pairs, 0 based on Foata normal form. 57/2641 useless extension candidates. Maximal degree in co-relation 2780. Up to 315 conditions per place. [2021-03-24 22:32:27,714 INFO L132 encePairwiseOnDemand]: 334/339 looper letters, 12 selfloop transitions, 1 changer transitions 0/208 dead transitions. [2021-03-24 22:32:27,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 208 transitions, 643 flow [2021-03-24 22:32:27,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:32:27,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:32:27,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 22:32:27,716 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 22:32:27,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:32:27,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 22:32:27,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:27,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:27,719 INFO L185 Difference]: Start difference. First operand has 76 places, 212 transitions, 629 flow. Second operand 3 states and 983 transitions. [2021-03-24 22:32:27,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 208 transitions, 643 flow [2021-03-24 22:32:27,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 208 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:32:27,722 INFO L241 Difference]: Finished difference. Result has 77 places, 208 transitions, 618 flow [2021-03-24 22:32:27,722 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=618, PETRI_PLACES=77, PETRI_TRANSITIONS=208} [2021-03-24 22:32:27,722 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -21 predicate places. [2021-03-24 22:32:27,722 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 208 transitions, 618 flow [2021-03-24 22:32:27,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:27,722 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:32:27,722 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:32:27,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 22:32:27,723 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:32:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:32:27,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2047114435, now seen corresponding path program 1 times [2021-03-24 22:32:27,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:32:27,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369400586] [2021-03-24 22:32:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:32:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:32:27,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:27,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:32:27,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:27,752 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 22:32:27,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369400586] [2021-03-24 22:32:27,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:32:27,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:32:27,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319046026] [2021-03-24 22:32:27,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:32:27,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:32:27,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:32:27,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:32:27,757 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 22:32:27,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 208 transitions, 618 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:27,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:32:27,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 22:32:27,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:32:27,852 INFO L129 PetriNetUnfolder]: 1702/2578 cut-off events. [2021-03-24 22:32:27,852 INFO L130 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2021-03-24 22:32:27,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2800 conditions, 2578 events. 1702/2578 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12386 event pairs, 0 based on Foata normal form. 1/2579 useless extension candidates. Maximal degree in co-relation 2789. Up to 315 conditions per place. [2021-03-24 22:32:27,861 INFO L132 encePairwiseOnDemand]: 337/339 looper letters, 15 selfloop transitions, 1 changer transitions 0/207 dead transitions. [2021-03-24 22:32:27,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 207 transitions, 647 flow [2021-03-24 22:32:27,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:32:27,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:32:27,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 22:32:27,863 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 22:32:27,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:32:27,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 22:32:27,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:27,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:27,866 INFO L185 Difference]: Start difference. First operand has 77 places, 208 transitions, 618 flow. Second operand 3 states and 983 transitions. [2021-03-24 22:32:27,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 207 transitions, 647 flow [2021-03-24 22:32:27,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 207 transitions, 646 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:32:27,869 INFO L241 Difference]: Finished difference. Result has 78 places, 207 transitions, 616 flow [2021-03-24 22:32:27,869 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=616, PETRI_PLACES=78, PETRI_TRANSITIONS=207} [2021-03-24 22:32:27,869 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -20 predicate places. [2021-03-24 22:32:27,869 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 207 transitions, 616 flow [2021-03-24 22:32:27,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:27,878 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:32:27,878 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:32:27,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 22:32:27,878 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:32:27,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:32:27,879 INFO L82 PathProgramCache]: Analyzing trace with hash 237829181, now seen corresponding path program 1 times [2021-03-24 22:32:27,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:32:27,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596465997] [2021-03-24 22:32:27,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:32:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:32:27,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:27,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:32:27,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:27,893 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 22:32:27,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596465997] [2021-03-24 22:32:27,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:32:27,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:32:27,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390778074] [2021-03-24 22:32:27,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:32:27,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:32:27,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:32:27,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:32:27,895 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 22:32:27,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 207 transitions, 616 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:27,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:32:27,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 22:32:27,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:32:27,967 INFO L129 PetriNetUnfolder]: 1285/2029 cut-off events. [2021-03-24 22:32:27,967 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-03-24 22:32:27,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2181 conditions, 2029 events. 1285/2029 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9883 event pairs, 0 based on Foata normal form. 71/2100 useless extension candidates. Maximal degree in co-relation 2173. Up to 315 conditions per place. [2021-03-24 22:32:27,975 INFO L132 encePairwiseOnDemand]: 332/339 looper letters, 10 selfloop transitions, 1 changer transitions 0/201 dead transitions. [2021-03-24 22:32:27,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 201 transitions, 620 flow [2021-03-24 22:32:27,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:32:27,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:32:27,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 22:32:27,977 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 22:32:27,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:32:27,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 22:32:27,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 22:32:27,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:27,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:27,979 INFO L185 Difference]: Start difference. First operand has 78 places, 207 transitions, 616 flow. Second operand 3 states and 983 transitions. [2021-03-24 22:32:27,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 201 transitions, 620 flow [2021-03-24 22:32:27,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 201 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:32:27,982 INFO L241 Difference]: Finished difference. Result has 79 places, 201 transitions, 599 flow [2021-03-24 22:32:27,982 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=599, PETRI_PLACES=79, PETRI_TRANSITIONS=201} [2021-03-24 22:32:27,982 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -19 predicate places. [2021-03-24 22:32:27,982 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 201 transitions, 599 flow [2021-03-24 22:32:27,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:27,982 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:32:27,982 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:32:27,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 22:32:27,982 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:32:27,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:32:27,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1663476841, now seen corresponding path program 1 times [2021-03-24 22:32:27,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:32:27,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492575087] [2021-03-24 22:32:27,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:32:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:32:27,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:27,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:32:27,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:27,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:27,999 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 22:32:27,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492575087] [2021-03-24 22:32:27,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:32:27,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:32:27,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107139617] [2021-03-24 22:32:27,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:32:27,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:32:28,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:32:28,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:32:28,000 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 22:32:28,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 201 transitions, 599 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:28,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:32:28,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 22:32:28,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:32:28,068 INFO L129 PetriNetUnfolder]: 1240/1969 cut-off events. [2021-03-24 22:32:28,069 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2021-03-24 22:32:28,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2122 conditions, 1969 events. 1240/1969 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9538 event pairs, 0 based on Foata normal form. 10/1979 useless extension candidates. Maximal degree in co-relation 2114. Up to 315 conditions per place. [2021-03-24 22:32:28,075 INFO L132 encePairwiseOnDemand]: 335/339 looper letters, 13 selfloop transitions, 1 changer transitions 0/198 dead transitions. [2021-03-24 22:32:28,075 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 198 transitions, 618 flow [2021-03-24 22:32:28,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:32:28,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:32:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 22:32:28,077 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 22:32:28,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 22:32:28,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 22:32:28,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:32:28,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 22:32:28,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 22:32:28,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:28,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:28,079 INFO L185 Difference]: Start difference. First operand has 79 places, 201 transitions, 599 flow. Second operand 3 states and 983 transitions. [2021-03-24 22:32:28,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 198 transitions, 618 flow [2021-03-24 22:32:28,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 198 transitions, 617 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:32:28,082 INFO L241 Difference]: Finished difference. Result has 80 places, 198 transitions, 591 flow [2021-03-24 22:32:28,082 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=591, PETRI_PLACES=80, PETRI_TRANSITIONS=198} [2021-03-24 22:32:28,082 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -18 predicate places. [2021-03-24 22:32:28,082 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 198 transitions, 591 flow [2021-03-24 22:32:28,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:28,082 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:32:28,083 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:32:28,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 22:32:28,083 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:32:28,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:32:28,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1216971457, now seen corresponding path program 1 times [2021-03-24 22:32:28,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:32:28,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951542526] [2021-03-24 22:32:28,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:32:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:32:28,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:28,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:28,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:28,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:32:28,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:28,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:28,093 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 22:32:28,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951542526] [2021-03-24 22:32:28,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:32:28,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:32:28,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608936828] [2021-03-24 22:32:28,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:32:28,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:32:28,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:32:28,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:32:28,095 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 22:32:28,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 198 transitions, 591 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:28,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:32:28,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 22:32:28,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:32:28,116 INFO L129 PetriNetUnfolder]: 120/289 cut-off events. [2021-03-24 22:32:28,116 INFO L130 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2021-03-24 22:32:28,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 289 events. 120/289 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 985 event pairs, 0 based on Foata normal form. 105/394 useless extension candidates. Maximal degree in co-relation 330. Up to 30 conditions per place. [2021-03-24 22:32:28,117 INFO L132 encePairwiseOnDemand]: 324/339 looper letters, 2 selfloop transitions, 1 changer transitions 0/184 dead transitions. [2021-03-24 22:32:28,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 184 transitions, 555 flow [2021-03-24 22:32:28,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:32:28,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:32:28,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 22:32:28,119 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 22:32:28,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 22:32:28,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 22:32:28,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:32:28,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 22:32:28,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 22:32:28,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:28,121 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:28,121 INFO L185 Difference]: Start difference. First operand has 80 places, 198 transitions, 591 flow. Second operand 3 states and 983 transitions. [2021-03-24 22:32:28,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 184 transitions, 555 flow [2021-03-24 22:32:28,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 184 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:32:28,123 INFO L241 Difference]: Finished difference. Result has 81 places, 184 transitions, 550 flow [2021-03-24 22:32:28,123 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=81, PETRI_TRANSITIONS=184} [2021-03-24 22:32:28,123 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -17 predicate places. [2021-03-24 22:32:28,123 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 184 transitions, 550 flow [2021-03-24 22:32:28,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:28,124 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:32:28,124 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:32:28,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 22:32:28,124 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:32:28,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:32:28,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1539067609, now seen corresponding path program 1 times [2021-03-24 22:32:28,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:32:28,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371398126] [2021-03-24 22:32:28,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:32:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:32:28,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:28,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:28,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:28,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:32:28,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:28,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:32:28,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371398126] [2021-03-24 22:32:28,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:32:28,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:32:28,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362944433] [2021-03-24 22:32:28,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:32:28,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:32:28,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:32:28,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:32:28,140 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 22:32:28,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 184 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:28,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:32:28,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 22:32:28,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:32:28,155 INFO L129 PetriNetUnfolder]: 0/49 cut-off events. [2021-03-24 22:32:28,155 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-24 22:32:28,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 49 events. 0/49 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 15/64 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 22:32:28,155 INFO L132 encePairwiseOnDemand]: 323/339 looper letters, 1 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2021-03-24 22:32:28,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 49 transitions, 149 flow [2021-03-24 22:32:28,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:32:28,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:32:28,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 22:32:28,157 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 22:32:28,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 22:32:28,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 22:32:28,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:32:28,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 22:32:28,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 22:32:28,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:28,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 22:32:28,160 INFO L185 Difference]: Start difference. First operand has 81 places, 184 transitions, 550 flow. Second operand 3 states and 983 transitions. [2021-03-24 22:32:28,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 49 transitions, 149 flow [2021-03-24 22:32:28,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 49 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:32:28,161 INFO L241 Difference]: Finished difference. Result has 82 places, 49 transitions, 146 flow [2021-03-24 22:32:28,161 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=82, PETRI_TRANSITIONS=49} [2021-03-24 22:32:28,161 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -16 predicate places. [2021-03-24 22:32:28,161 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 49 transitions, 146 flow [2021-03-24 22:32:28,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 22:32:28,161 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:32:28,161 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:32:28,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 22:32:28,162 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:32:28,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:32:28,162 INFO L82 PathProgramCache]: Analyzing trace with hash 501923523, now seen corresponding path program 1 times [2021-03-24 22:32:28,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:32:28,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610796661] [2021-03-24 22:32:28,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:32:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:32:28,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:28,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:32:28,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:28,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:32:28,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:32:28,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:32:28,281 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:32:28,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:32:28,300 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:32:28,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:32:28,341 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 22:32:28,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 22:32:28,394 INFO L142 QuantifierPusher]: treesize reduction 27, result has 67.1 percent of original size [2021-03-24 22:32:28,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-24 22:32:28,448 INFO L142 QuantifierPusher]: treesize reduction 36, result has 63.6 percent of original size [2021-03-24 22:32:28,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-24 22:32:28,504 INFO L142 QuantifierPusher]: treesize reduction 36, result has 65.7 percent of original size [2021-03-24 22:32:28,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-24 22:32:28,572 INFO L142 QuantifierPusher]: treesize reduction 36, result has 67.6 percent of original size [2021-03-24 22:32:28,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-03-24 22:32:28,661 INFO L142 QuantifierPusher]: treesize reduction 45, result has 64.8 percent of original size [2021-03-24 22:32:28,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-03-24 22:32:28,745 INFO L142 QuantifierPusher]: treesize reduction 63, result has 59.6 percent of original size [2021-03-24 22:32:28,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-24 22:32:28,837 INFO L142 QuantifierPusher]: treesize reduction 72, result has 58.4 percent of original size [2021-03-24 22:32:28,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-24 22:32:28,954 INFO L142 QuantifierPusher]: treesize reduction 81, result has 57.4 percent of original size [2021-03-24 22:32:28,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-03-24 22:32:29,068 INFO L142 QuantifierPusher]: treesize reduction 99, result has 53.3 percent of original size [2021-03-24 22:32:29,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-24 22:32:29,204 INFO L142 QuantifierPusher]: treesize reduction 117, result has 50.0 percent of original size [2021-03-24 22:32:29,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-03-24 22:32:29,307 INFO L142 QuantifierPusher]: treesize reduction 135, result has 47.3 percent of original size [2021-03-24 22:32:29,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-03-24 22:32:29,386 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 22:32:29,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610796661] [2021-03-24 22:32:29,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:32:29,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-24 22:32:29,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030425633] [2021-03-24 22:32:29,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 22:32:29,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:32:29,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 22:32:29,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-03-24 22:32:29,393 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 339 [2021-03-24 22:32:29,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 49 transitions, 146 flow. Second operand has 18 states, 18 states have (on average 305.94444444444446) internal successors, (5507), 18 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states 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 22:32:29,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:32:29,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 339 [2021-03-24 22:32:29,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:33:52,939 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-03-24 22:33:53,018 INFO L129 PetriNetUnfolder]: 638979/738307 cut-off events. [2021-03-24 22:33:53,019 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 22:33:57,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1475637 conditions, 738307 events. 638979/738307 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28451. Compared 3492462 event pairs, 212993 based on Foata normal form. 1/734129 useless extension candidates. Maximal degree in co-relation 1475629. Up to 262145 conditions per place. [2021-03-24 22:33:59,966 INFO L132 encePairwiseOnDemand]: 322/339 looper letters, 135 selfloop transitions, 15 changer transitions 1/183 dead transitions. [2021-03-24 22:33:59,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 183 transitions, 716 flow [2021-03-24 22:33:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-24 22:33:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-03-24 22:33:59,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5642 transitions. [2021-03-24 22:33:59,971 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246148803670927 [2021-03-24 22:33:59,972 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5642 transitions. [2021-03-24 22:33:59,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5642 transitions. [2021-03-24 22:33:59,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:33:59,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5642 transitions. [2021-03-24 22:33:59,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 313.44444444444446) internal successors, (5642), 18 states have internal predecessors, (5642), 0 states have call successors, (0), 0 states 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 22:33:59,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 339.0) internal successors, (6441), 19 states have internal predecessors, (6441), 0 states have call successors, (0), 0 states 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 22:33:59,983 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 339.0) internal successors, (6441), 19 states have internal predecessors, (6441), 0 states have call successors, (0), 0 states 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 22:33:59,983 INFO L185 Difference]: Start difference. First operand has 82 places, 49 transitions, 146 flow. Second operand 18 states and 5642 transitions. [2021-03-24 22:33:59,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 183 transitions, 716 flow [2021-03-24 22:33:59,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 183 transitions, 715 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:33:59,989 INFO L241 Difference]: Finished difference. Result has 114 places, 63 transitions, 264 flow [2021-03-24 22:33:59,989 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=264, PETRI_PLACES=114, PETRI_TRANSITIONS=63} [2021-03-24 22:33:59,989 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, 16 predicate places. [2021-03-24 22:33:59,989 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 63 transitions, 264 flow [2021-03-24 22:33:59,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 305.94444444444446) internal successors, (5507), 18 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states 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 22:33:59,990 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:33:59,990 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:33:59,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 22:33:59,990 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, 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 22:33:59,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:33:59,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1947470939, now seen corresponding path program 2 times [2021-03-24 22:33:59,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:33:59,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791827225] [2021-03-24 22:33:59,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:33:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:34:00,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:34:00,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:34:00,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:34:00,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:34:00,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:34:00,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:34:00,058 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:34:00,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:34:00,068 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:34:00,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:34:00,083 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:34:00,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:34:00,101 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:34:00,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:34:00,124 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-24 22:34:00,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-24 22:34:00,155 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-24 22:34:00,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-24 22:34:00,195 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-24 22:34:00,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-24 22:34:00,239 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-24 22:34:00,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-24 22:34:00,291 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-24 22:34:00,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-24 22:34:00,352 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-24 22:34:00,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-24 22:34:00,429 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-03-24 22:34:00,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-24 22:34:00,502 INFO L142 QuantifierPusher]: treesize reduction 108, result has 50.2 percent of original size [2021-03-24 22:34:00,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-03-24 22:34:00,580 INFO L142 QuantifierPusher]: treesize reduction 126, result has 48.6 percent of original size [2021-03-24 22:34:00,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-03-24 22:34:00,666 INFO L142 QuantifierPusher]: treesize reduction 135, result has 47.3 percent of original size [2021-03-24 22:34:00,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-03-24 22:34:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:34:00,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791827225] [2021-03-24 22:34:00,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:34:00,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-24 22:34:00,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267174886] [2021-03-24 22:34:00,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 22:34:00,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:34:00,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 22:34:00,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-03-24 22:34:00,751 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 339 [2021-03-24 22:34:00,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 63 transitions, 264 flow. Second operand has 18 states, 18 states have (on average 305.94444444444446) internal successors, (5507), 18 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states 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 22:34:00,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:34:00,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 339 [2021-03-24 22:34:00,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand