/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-VariableLbe.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 13:35:20,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 13:35:20,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 13:35:20,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 13:35:20,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 13:35:20,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 13:35:20,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 13:35:20,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 13:35:20,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 13:35:20,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 13:35:20,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 13:35:20,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 13:35:20,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 13:35:20,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 13:35:20,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 13:35:20,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 13:35:20,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 13:35:20,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 13:35:20,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 13:35:20,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 13:35:20,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 13:35:20,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 13:35:20,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 13:35:20,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 13:35:20,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 13:35:20,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 13:35:20,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 13:35:20,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 13:35:20,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 13:35:20,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 13:35:20,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 13:35:20,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 13:35:20,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 13:35:20,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 13:35:20,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 13:35:20,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 13:35:20,710 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-VariableLbe.epf [2021-03-24 13:35:20,739 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 13:35:20,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 13:35:20,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 13:35:20,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 13:35:20,740 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 13:35:20,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 13:35:20,741 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 13:35:20,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 13:35:20,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 13:35:20,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 13:35:20,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 13:35:20,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 13:35:20,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 13:35:20,742 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 13:35:20,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 13:35:20,742 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 13:35:20,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 13:35:20,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 13:35:20,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 13:35:20,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 13:35:20,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 13:35:20,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:35:20,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 13:35:20,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 13:35:20,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 13:35:20,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 13:35:20,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 13:35:20,744 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 13:35:20,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 13:35:20,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 13:35:21,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 13:35:21,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 13:35:21,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 13:35:21,034 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 13:35:21,035 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 13:35:21,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_16.bpl [2021-03-24 13:35:21,036 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_16.bpl' [2021-03-24 13:35:21,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 13:35:21,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 13:35:21,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 13:35:21,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 13:35:21,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 13:35:21,085 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 01:35:21" (1/1) ... [2021-03-24 13:35:21,094 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 01:35:21" (1/1) ... [2021-03-24 13:35:21,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 13:35:21,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 13:35:21,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 13:35:21,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 13:35:21,109 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 01:35:21" (1/1) ... [2021-03-24 13:35:21,109 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 01:35:21" (1/1) ... [2021-03-24 13:35:21,110 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 01:35:21" (1/1) ... [2021-03-24 13:35:21,110 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 01:35:21" (1/1) ... [2021-03-24 13:35:21,113 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 01:35:21" (1/1) ... [2021-03-24 13:35:21,114 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 01:35:21" (1/1) ... [2021-03-24 13:35:21,115 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 01:35:21" (1/1) ... [2021-03-24 13:35:21,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 13:35:21,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 13:35:21,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 13:35:21,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 13:35:21,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:35:21" (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 13:35:21,180 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_14 given in one single declaration [2021-03-24 13:35:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure set_14 [2021-03-24 13:35:21,180 INFO L138 BoogieDeclarations]: Found implementation of procedure set_14 [2021-03-24 13:35:21,180 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_15 given in one single declaration [2021-03-24 13:35:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure set_15 [2021-03-24 13:35:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure set_15 [2021-03-24 13:35:21,181 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-24 13:35:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-24 13:35:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-24 13:35:21,181 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-24 13:35:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-24 13:35:21,182 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-24 13:35:21,182 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-24 13:35:21,182 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-24 13:35:21,182 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-24 13:35:21,182 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-24 13:35:21,182 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-24 13:35:21,182 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-24 13:35:21,182 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-24 13:35:21,182 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-24 13:35:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-24 13:35:21,183 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-03-24 13:35:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-03-24 13:35:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-03-24 13:35:21,183 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 13:35:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 13:35:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 13:35:21,183 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-03-24 13:35:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-03-24 13:35:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-03-24 13:35:21,184 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-24 13:35:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-24 13:35:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-24 13:35:21,184 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-03-24 13:35:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-03-24 13:35:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-03-24 13:35:21,185 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-24 13:35:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-24 13:35:21,185 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-24 13:35:21,185 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-03-24 13:35:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-03-24 13:35:21,185 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-03-24 13:35:21,185 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-24 13:35:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-24 13:35:21,185 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-24 13:35:21,186 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-03-24 13:35:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-03-24 13:35:21,186 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-03-24 13:35:21,186 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-24 13:35:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-24 13:35:21,186 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-24 13:35:21,187 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 13:35:21,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 13:35:21,428 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 13:35:21,430 INFO L202 PluginConnector]: Adding new model example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:35:21 BoogieIcfgContainer [2021-03-24 13:35:21,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 13:35:21,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 13:35:21,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 13:35:21,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 13:35:21,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:35:21" (1/2) ... [2021-03-24 13:35:21,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f999ed6 and model type example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:35:21, skipping insertion in model container [2021-03-24 13:35:21,435 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 01:35:21" (2/2) ... [2021-03-24 13:35:21,436 INFO L111 eAbstractionObserver]: Analyzing ICFG example_16.bpl [2021-03-24 13:35:21,441 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 13:35:21,444 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 13:35:21,444 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 13:35:21,731 INFO L149 ThreadInstanceAdder]: Constructed 256 joinOtherThreadTransitions. [2021-03-24 13:35:21,746 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-03-24 13:35:21,764 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:35:21,764 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:35:21,764 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:35:21,764 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:35:21,765 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:35:21,765 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:35:21,765 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:35:21,765 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:35:21,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 323 transitions, 1494 flow [2021-03-24 13:36:02,997 INFO L129 PetriNetUnfolder]: 458753/524339 cut-off events. [2021-03-24 13:36:02,998 INFO L130 PetriNetUnfolder]: For 524288/524288 co-relation queries the response was YES. [2021-03-24 13:36:07,404 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 13:36:07,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 323 transitions, 1494 flow [2021-03-24 13:36:10,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 305 transitions, 1426 flow [2021-03-24 13:36:10,175 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:36:10,182 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 305 transitions, 1426 flow [2021-03-24 13:36:10,185 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 305 transitions, 1426 flow [2021-03-24 13:36:10,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 114 places, 305 transitions, 1426 flow [2021-03-24 13:36:56,252 INFO L129 PetriNetUnfolder]: 458753/524337 cut-off events. [2021-03-24 13:36:56,252 INFO L130 PetriNetUnfolder]: For 524288/524288 co-relation queries the response was YES. [2021-03-24 13:37:00,430 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 13:37:12,382 INFO L142 LiptonReduction]: Number of co-enabled transitions 15840 [2021-03-24 13:37:13,717 INFO L154 LiptonReduction]: Checked pairs total: 4200 [2021-03-24 13:37:13,717 INFO L156 LiptonReduction]: Total number of compositions: 16 [2021-03-24 13:37:13,719 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 63545 [2021-03-24 13:37:53,331 INFO L129 PetriNetUnfolder]: 458753/524320 cut-off events. [2021-03-24 13:37:53,332 INFO L130 PetriNetUnfolder]: For 524288/524288 co-relation queries the response was YES. [2021-03-24 13:37:53,332 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:37:53,332 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 13:37:53,333 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 13:37:53,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:37:53,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1566408029, now seen corresponding path program 1 times [2021-03-24 13:37:53,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:37:53,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864276979] [2021-03-24 13:37:53,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:37:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:37:53,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:53,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:37:53,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:53,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:37:53,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:53,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:37:53,541 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 13:37:53,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864276979] [2021-03-24 13:37:53,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:37:53,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:37:53,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10478977] [2021-03-24 13:37:53,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:37:53,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:37:53,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:37:53,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:37:53,568 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 13:37:53,573 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 13:37:53,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:37:53,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 13:37:53,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:12,517 INFO L129 PetriNetUnfolder]: 235058/272802 cut-off events. [2021-03-24 13:38:12,517 INFO L130 PetriNetUnfolder]: For 366130/366130 co-relation queries the response was YES. [2021-03-24 13:38:14,428 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 13:38:15,670 INFO L132 encePairwiseOnDemand]: 328/339 looper letters, 6 selfloop transitions, 1 changer transitions 0/279 dead transitions. [2021-03-24 13:38:15,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 279 transitions, 1358 flow [2021-03-24 13:38:15,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:38:15,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:38:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 13:38:15,683 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 13:38:15,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 13:38:15,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 13:38:15,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:15,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 13:38:15,693 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 13:38:15,698 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 13:38:15,699 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 13:38:15,700 INFO L185 Difference]: Start difference. First operand has 98 places, 289 transitions, 1394 flow. Second operand 3 states and 983 transitions. [2021-03-24 13:38:15,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 279 transitions, 1358 flow [2021-03-24 13:38:32,160 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 13:38:32,165 INFO L241 Difference]: Finished difference. Result has 68 places, 279 transitions, 822 flow [2021-03-24 13:38:32,167 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 13:38:32,168 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -30 predicate places. [2021-03-24 13:38:32,168 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 279 transitions, 822 flow [2021-03-24 13:38:32,169 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 13:38:32,169 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:32,169 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 13:38:32,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 13:38:32,169 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 13:38:32,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:32,170 INFO L82 PathProgramCache]: Analyzing trace with hash -294847935, now seen corresponding path program 1 times [2021-03-24 13:38:32,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:32,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479792234] [2021-03-24 13:38:32,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:32,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:32,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:32,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:32,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:38:32,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:32,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:38:32,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479792234] [2021-03-24 13:38:32,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:32,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:38:32,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127230518] [2021-03-24 13:38:32,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:38:32,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:32,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:38:32,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:38:32,228 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 13:38:32,229 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 13:38:32,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:32,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 13:38:32,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:38,679 INFO L129 PetriNetUnfolder]: 135672/160505 cut-off events. [2021-03-24 13:38:38,679 INFO L130 PetriNetUnfolder]: For 17855/17855 co-relation queries the response was YES. [2021-03-24 13:38:39,198 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 13:38:39,872 INFO L132 encePairwiseOnDemand]: 329/339 looper letters, 7 selfloop transitions, 1 changer transitions 0/270 dead transitions. [2021-03-24 13:38:39,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 270 transitions, 811 flow [2021-03-24 13:38:39,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:38:39,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:38:39,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 13:38:39,875 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 13:38:39,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 13:38:39,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 13:38:39,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:39,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 13:38:39,878 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 13:38:39,880 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 13:38:39,881 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 13:38:39,881 INFO L185 Difference]: Start difference. First operand has 68 places, 279 transitions, 822 flow. Second operand 3 states and 983 transitions. [2021-03-24 13:38:39,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 270 transitions, 811 flow [2021-03-24 13:38:39,913 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 13:38:39,916 INFO L241 Difference]: Finished difference. Result has 69 places, 270 transitions, 796 flow [2021-03-24 13:38:39,917 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 13:38:39,917 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -29 predicate places. [2021-03-24 13:38:39,917 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 270 transitions, 796 flow [2021-03-24 13:38:39,918 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 13:38:39,918 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:39,918 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 13:38:39,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 13:38:39,919 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 13:38:39,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:39,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1233565205, now seen corresponding path program 1 times [2021-03-24 13:38:39,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:39,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238017636] [2021-03-24 13:38:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:39,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:39,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:39,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:39,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:38:39,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:39,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:39,945 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 13:38:39,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238017636] [2021-03-24 13:38:39,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:39,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:38:39,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724765973] [2021-03-24 13:38:39,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:38:39,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:39,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:38:39,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:38:39,948 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 13:38:39,949 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 13:38:39,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:39,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 13:38:39,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:46,117 INFO L129 PetriNetUnfolder]: 125350/149090 cut-off events. [2021-03-24 13:38:46,117 INFO L130 PetriNetUnfolder]: For 10756/10756 co-relation queries the response was YES. [2021-03-24 13:38:46,600 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 13:38:47,021 INFO L132 encePairwiseOnDemand]: 333/339 looper letters, 11 selfloop transitions, 1 changer transitions 0/265 dead transitions. [2021-03-24 13:38:47,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 265 transitions, 805 flow [2021-03-24 13:38:47,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:38:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:38:47,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 13:38:47,023 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 13:38:47,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 13:38:47,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 13:38:47,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:47,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 13:38:47,026 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 13:38:47,028 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 13:38:47,028 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 13:38:47,029 INFO L185 Difference]: Start difference. First operand has 69 places, 270 transitions, 796 flow. Second operand 3 states and 983 transitions. [2021-03-24 13:38:47,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 265 transitions, 805 flow [2021-03-24 13:38:47,071 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 13:38:47,073 INFO L241 Difference]: Finished difference. Result has 70 places, 265 transitions, 782 flow [2021-03-24 13:38:47,073 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 13:38:47,074 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -28 predicate places. [2021-03-24 13:38:47,074 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 265 transitions, 782 flow [2021-03-24 13:38:47,074 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 13:38:47,075 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:47,075 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 13:38:47,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 13:38:47,075 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 13:38:47,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:47,076 INFO L82 PathProgramCache]: Analyzing trace with hash -861950085, now seen corresponding path program 1 times [2021-03-24 13:38:47,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:47,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436874278] [2021-03-24 13:38:47,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:47,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:47,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:47,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:47,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:38:47,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:47,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:47,120 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 13:38:47,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436874278] [2021-03-24 13:38:47,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:47,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:38:47,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199900113] [2021-03-24 13:38:47,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:38:47,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:47,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:38:47,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:38:47,123 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 13:38:47,124 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 13:38:47,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:47,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 13:38:47,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:51,655 INFO L129 PetriNetUnfolder]: 96298/116241 cut-off events. [2021-03-24 13:38:51,655 INFO L130 PetriNetUnfolder]: For 9962/9962 co-relation queries the response was YES. [2021-03-24 13:38:52,033 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 13:38:52,548 INFO L132 encePairwiseOnDemand]: 331/339 looper letters, 9 selfloop transitions, 1 changer transitions 0/258 dead transitions. [2021-03-24 13:38:52,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 258 transitions, 781 flow [2021-03-24 13:38:52,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:38:52,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:38:52,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 13:38:52,550 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 13:38:52,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 13:38:52,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 13:38:52,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:52,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 13:38:52,568 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 13:38:52,570 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 13:38:52,571 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 13:38:52,571 INFO L185 Difference]: Start difference. First operand has 70 places, 265 transitions, 782 flow. Second operand 3 states and 983 transitions. [2021-03-24 13:38:52,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 258 transitions, 781 flow [2021-03-24 13:38:52,623 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 13:38:52,626 INFO L241 Difference]: Finished difference. Result has 71 places, 258 transitions, 762 flow [2021-03-24 13:38:52,626 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 13:38:52,643 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -27 predicate places. [2021-03-24 13:38:52,643 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 258 transitions, 762 flow [2021-03-24 13:38:52,643 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 13:38:52,644 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:52,644 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 13:38:52,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 13:38:52,644 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 13:38:52,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:52,644 INFO L82 PathProgramCache]: Analyzing trace with hash -592466757, now seen corresponding path program 1 times [2021-03-24 13:38:52,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:52,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043234029] [2021-03-24 13:38:52,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:52,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:52,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:52,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:52,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:38:52,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:52,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:52,718 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 13:38:52,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043234029] [2021-03-24 13:38:52,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:52,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:38:52,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478517670] [2021-03-24 13:38:52,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:38:52,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:52,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:38:52,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:38:52,720 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 13:38:52,721 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 13:38:52,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:52,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 13:38:52,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:56,566 INFO L129 PetriNetUnfolder]: 70668/86617 cut-off events. [2021-03-24 13:38:56,566 INFO L130 PetriNetUnfolder]: For 7684/7684 co-relation queries the response was YES. [2021-03-24 13:38:56,815 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 13:38:57,027 INFO L132 encePairwiseOnDemand]: 330/339 looper letters, 8 selfloop transitions, 1 changer transitions 0/250 dead transitions. [2021-03-24 13:38:57,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 250 transitions, 756 flow [2021-03-24 13:38:57,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:38:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:38:57,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 13:38:57,029 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 13:38:57,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 13:38:57,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 13:38:57,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:57,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 13:38:57,032 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 13:38:57,033 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 13:38:57,034 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 13:38:57,034 INFO L185 Difference]: Start difference. First operand has 71 places, 258 transitions, 762 flow. Second operand 3 states and 983 transitions. [2021-03-24 13:38:57,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 250 transitions, 756 flow [2021-03-24 13:38:57,046 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 13:38:57,049 INFO L241 Difference]: Finished difference. Result has 72 places, 250 transitions, 739 flow [2021-03-24 13:38:57,049 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 13:38:57,049 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -26 predicate places. [2021-03-24 13:38:57,049 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 250 transitions, 739 flow [2021-03-24 13:38:57,050 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 13:38:57,050 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:57,050 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 13:38:57,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 13:38:57,050 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 13:38:57,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:57,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1871287281, now seen corresponding path program 1 times [2021-03-24 13:38:57,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:57,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77462082] [2021-03-24 13:38:57,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:57,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:57,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:57,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:57,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:38:57,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:57,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:57,070 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 13:38:57,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77462082] [2021-03-24 13:38:57,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:57,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:38:57,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492429405] [2021-03-24 13:38:57,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:38:57,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:57,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:38:57,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:38:57,073 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 13:38:57,074 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 13:38:57,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:57,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 13:38:57,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:58,151 INFO L129 PetriNetUnfolder]: 22146/28336 cut-off events. [2021-03-24 13:38:58,151 INFO L130 PetriNetUnfolder]: For 5582/5582 co-relation queries the response was YES. [2021-03-24 13:38:58,262 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 13:38:58,332 INFO L132 encePairwiseOnDemand]: 326/339 looper letters, 4 selfloop transitions, 1 changer transitions 0/238 dead transitions. [2021-03-24 13:38:58,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 238 transitions, 713 flow [2021-03-24 13:38:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:38:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:38:58,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 13:38:58,334 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 13:38:58,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 13:38:58,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 13:38:58,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:58,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 13:38:58,337 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 13:38:58,339 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 13:38:58,340 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 13:38:58,340 INFO L185 Difference]: Start difference. First operand has 72 places, 250 transitions, 739 flow. Second operand 3 states and 983 transitions. [2021-03-24 13:38:58,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 238 transitions, 713 flow [2021-03-24 13:38:58,343 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 13:38:58,345 INFO L241 Difference]: Finished difference. Result has 73 places, 238 transitions, 704 flow [2021-03-24 13:38:58,345 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 13:38:58,345 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -25 predicate places. [2021-03-24 13:38:58,346 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 238 transitions, 704 flow [2021-03-24 13:38:58,346 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 13:38:58,346 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:58,346 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 13:38:58,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 13:38:58,347 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 13:38:58,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:58,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1016495101, now seen corresponding path program 1 times [2021-03-24 13:38:58,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:58,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686485398] [2021-03-24 13:38:58,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:58,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:58,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:58,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:58,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:38:58,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:58,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:58,380 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 13:38:58,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686485398] [2021-03-24 13:38:58,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:58,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:38:58,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230326320] [2021-03-24 13:38:58,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:38:58,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:58,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:38:58,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:38:58,383 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 13:38:58,384 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 13:38:58,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:58,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 13:38:58,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:58,735 INFO L129 PetriNetUnfolder]: 8415/11346 cut-off events. [2021-03-24 13:38:58,735 INFO L130 PetriNetUnfolder]: For 1959/1959 co-relation queries the response was YES. [2021-03-24 13:38:58,770 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 13:38:58,803 INFO L132 encePairwiseOnDemand]: 327/339 looper letters, 5 selfloop transitions, 1 changer transitions 0/227 dead transitions. [2021-03-24 13:38:58,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 227 transitions, 683 flow [2021-03-24 13:38:58,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:38:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:38:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 13:38:58,805 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 13:38:58,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 13:38:58,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 13:38:58,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:58,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 13:38:58,808 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 13:38:58,809 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 13:38:58,809 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 13:38:58,809 INFO L185 Difference]: Start difference. First operand has 73 places, 238 transitions, 704 flow. Second operand 3 states and 983 transitions. [2021-03-24 13:38:58,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 227 transitions, 683 flow [2021-03-24 13:38:58,813 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 13:38:58,815 INFO L241 Difference]: Finished difference. Result has 74 places, 227 transitions, 672 flow [2021-03-24 13:38:58,815 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 13:38:58,815 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -24 predicate places. [2021-03-24 13:38:58,815 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 227 transitions, 672 flow [2021-03-24 13:38:58,816 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 13:38:58,816 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:58,816 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 13:38:58,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 13:38:58,816 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 13:38:58,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:58,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1214096417, now seen corresponding path program 1 times [2021-03-24 13:38:58,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:58,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047821331] [2021-03-24 13:38:58,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:58,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:58,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:58,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:58,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:38:58,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:58,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:58,834 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 13:38:58,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047821331] [2021-03-24 13:38:58,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:58,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:38:58,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226110273] [2021-03-24 13:38:58,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:38:58,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:58,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:38:58,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:38:58,836 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 13:38:58,836 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 13:38:58,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:58,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 13:38:58,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:58,954 INFO L129 PetriNetUnfolder]: 2037/2985 cut-off events. [2021-03-24 13:38:58,954 INFO L130 PetriNetUnfolder]: For 795/795 co-relation queries the response was YES. [2021-03-24 13:38:58,959 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 13:38:58,966 INFO L132 encePairwiseOnDemand]: 325/339 looper letters, 3 selfloop transitions, 1 changer transitions 0/214 dead transitions. [2021-03-24 13:38:58,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 214 transitions, 641 flow [2021-03-24 13:38:58,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:38:58,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:38:58,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 13:38:58,968 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 13:38:58,968 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 13:38:58,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 13:38:58,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:58,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 13:38:58,970 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 13:38:58,971 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 13:38:58,972 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 13:38:58,972 INFO L185 Difference]: Start difference. First operand has 74 places, 227 transitions, 672 flow. Second operand 3 states and 983 transitions. [2021-03-24 13:38:58,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 214 transitions, 641 flow [2021-03-24 13:38:58,974 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 13:38:58,975 INFO L241 Difference]: Finished difference. Result has 75 places, 214 transitions, 634 flow [2021-03-24 13:38:58,976 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 13:38:58,976 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -23 predicate places. [2021-03-24 13:38:58,976 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 214 transitions, 634 flow [2021-03-24 13:38:58,976 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 13:38:58,976 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:58,977 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 13:38:58,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 13:38:58,977 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 13:38:58,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:58,977 INFO L82 PathProgramCache]: Analyzing trace with hash -187755651, now seen corresponding path program 1 times [2021-03-24 13:38:58,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:58,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458097064] [2021-03-24 13:38:58,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:59,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:59,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:38:59,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:59,009 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 13:38:59,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458097064] [2021-03-24 13:38:59,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:59,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:38:59,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477306638] [2021-03-24 13:38:59,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:38:59,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:59,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:38:59,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:38:59,011 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 13:38:59,012 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 13:38:59,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:59,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 13:38:59,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:59,132 INFO L129 PetriNetUnfolder]: 1988/2928 cut-off events. [2021-03-24 13:38:59,132 INFO L130 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2021-03-24 13:38:59,138 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 13:38:59,145 INFO L132 encePairwiseOnDemand]: 336/339 looper letters, 14 selfloop transitions, 1 changer transitions 0/212 dead transitions. [2021-03-24 13:38:59,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 212 transitions, 658 flow [2021-03-24 13:38:59,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:38:59,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:38:59,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 13:38:59,147 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 13:38:59,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:59,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,149 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 13:38:59,151 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 13:38:59,151 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 13:38:59,151 INFO L185 Difference]: Start difference. First operand has 75 places, 214 transitions, 634 flow. Second operand 3 states and 983 transitions. [2021-03-24 13:38:59,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 212 transitions, 658 flow [2021-03-24 13:38:59,153 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 13:38:59,155 INFO L241 Difference]: Finished difference. Result has 76 places, 212 transitions, 629 flow [2021-03-24 13:38:59,155 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 13:38:59,155 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -22 predicate places. [2021-03-24 13:38:59,155 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 212 transitions, 629 flow [2021-03-24 13:38:59,156 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 13:38:59,156 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:59,156 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 13:38:59,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 13:38:59,156 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 13:38:59,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:59,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1319369611, now seen corresponding path program 1 times [2021-03-24 13:38:59,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:59,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365891511] [2021-03-24 13:38:59,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:59,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:59,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:38:59,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:59,174 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 13:38:59,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365891511] [2021-03-24 13:38:59,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:59,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:38:59,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771558283] [2021-03-24 13:38:59,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:38:59,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:59,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:38:59,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:38:59,176 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 13:38:59,177 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 13:38:59,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:59,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 13:38:59,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:59,282 INFO L129 PetriNetUnfolder]: 1707/2584 cut-off events. [2021-03-24 13:38:59,282 INFO L130 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2021-03-24 13:38:59,287 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 13:38:59,292 INFO L132 encePairwiseOnDemand]: 334/339 looper letters, 12 selfloop transitions, 1 changer transitions 0/208 dead transitions. [2021-03-24 13:38:59,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 208 transitions, 643 flow [2021-03-24 13:38:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:38:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:38:59,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 13:38:59,293 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 13:38:59,293 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:59,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,295 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 13:38:59,296 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 13:38:59,297 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 13:38:59,297 INFO L185 Difference]: Start difference. First operand has 76 places, 212 transitions, 629 flow. Second operand 3 states and 983 transitions. [2021-03-24 13:38:59,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 208 transitions, 643 flow [2021-03-24 13:38:59,299 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 13:38:59,301 INFO L241 Difference]: Finished difference. Result has 77 places, 208 transitions, 618 flow [2021-03-24 13:38:59,301 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 13:38:59,301 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -21 predicate places. [2021-03-24 13:38:59,301 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 208 transitions, 618 flow [2021-03-24 13:38:59,302 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 13:38:59,302 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:59,302 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 13:38:59,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 13:38:59,302 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 13:38:59,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:59,302 INFO L82 PathProgramCache]: Analyzing trace with hash 2047114435, now seen corresponding path program 1 times [2021-03-24 13:38:59,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:59,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358563330] [2021-03-24 13:38:59,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:59,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:59,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:38:59,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:59,320 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 13:38:59,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358563330] [2021-03-24 13:38:59,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:59,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:38:59,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047602965] [2021-03-24 13:38:59,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:38:59,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:59,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:38:59,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:38:59,322 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 13:38:59,323 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 13:38:59,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:59,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 13:38:59,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:59,422 INFO L129 PetriNetUnfolder]: 1702/2578 cut-off events. [2021-03-24 13:38:59,422 INFO L130 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2021-03-24 13:38:59,427 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 13:38:59,432 INFO L132 encePairwiseOnDemand]: 337/339 looper letters, 15 selfloop transitions, 1 changer transitions 0/207 dead transitions. [2021-03-24 13:38:59,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 207 transitions, 647 flow [2021-03-24 13:38:59,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:38:59,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:38:59,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 13:38:59,434 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 13:38:59,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:59,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,436 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 13:38:59,436 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 13:38:59,437 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 13:38:59,437 INFO L185 Difference]: Start difference. First operand has 77 places, 208 transitions, 618 flow. Second operand 3 states and 983 transitions. [2021-03-24 13:38:59,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 207 transitions, 647 flow [2021-03-24 13:38:59,438 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 13:38:59,440 INFO L241 Difference]: Finished difference. Result has 78 places, 207 transitions, 616 flow [2021-03-24 13:38:59,440 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 13:38:59,440 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -20 predicate places. [2021-03-24 13:38:59,440 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 207 transitions, 616 flow [2021-03-24 13:38:59,441 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 13:38:59,441 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:59,441 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 13:38:59,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 13:38:59,441 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 13:38:59,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:59,441 INFO L82 PathProgramCache]: Analyzing trace with hash 237829181, now seen corresponding path program 1 times [2021-03-24 13:38:59,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:59,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737322845] [2021-03-24 13:38:59,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:59,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:59,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:38:59,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:59,460 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 13:38:59,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737322845] [2021-03-24 13:38:59,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:59,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:38:59,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312983478] [2021-03-24 13:38:59,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:38:59,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:59,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:38:59,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:38:59,462 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 13:38:59,463 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 13:38:59,463 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:59,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 13:38:59,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:59,541 INFO L129 PetriNetUnfolder]: 1285/2029 cut-off events. [2021-03-24 13:38:59,541 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-03-24 13:38:59,546 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 13:38:59,551 INFO L132 encePairwiseOnDemand]: 332/339 looper letters, 10 selfloop transitions, 1 changer transitions 0/201 dead transitions. [2021-03-24 13:38:59,551 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 201 transitions, 620 flow [2021-03-24 13:38:59,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:38:59,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:38:59,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 13:38:59,553 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 13:38:59,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:59,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,555 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 13:38:59,556 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 13:38:59,556 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 13:38:59,556 INFO L185 Difference]: Start difference. First operand has 78 places, 207 transitions, 616 flow. Second operand 3 states and 983 transitions. [2021-03-24 13:38:59,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 201 transitions, 620 flow [2021-03-24 13:38:59,558 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 13:38:59,560 INFO L241 Difference]: Finished difference. Result has 79 places, 201 transitions, 599 flow [2021-03-24 13:38:59,560 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 13:38:59,560 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -19 predicate places. [2021-03-24 13:38:59,560 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 201 transitions, 599 flow [2021-03-24 13:38:59,561 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 13:38:59,561 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:59,561 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 13:38:59,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 13:38:59,561 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 13:38:59,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:59,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1663476841, now seen corresponding path program 1 times [2021-03-24 13:38:59,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:59,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883589852] [2021-03-24 13:38:59,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:59,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:59,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:38:59,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:59,578 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 13:38:59,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883589852] [2021-03-24 13:38:59,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:59,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:38:59,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618268724] [2021-03-24 13:38:59,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:38:59,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:59,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:38:59,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:38:59,580 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 13:38:59,580 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 13:38:59,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:59,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 13:38:59,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:59,679 INFO L129 PetriNetUnfolder]: 1240/1969 cut-off events. [2021-03-24 13:38:59,679 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2021-03-24 13:38:59,684 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 13:38:59,689 INFO L132 encePairwiseOnDemand]: 335/339 looper letters, 13 selfloop transitions, 1 changer transitions 0/198 dead transitions. [2021-03-24 13:38:59,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 198 transitions, 618 flow [2021-03-24 13:38:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:38:59,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:38:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 13:38:59,691 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 13:38:59,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:59,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,693 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 13:38:59,694 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 13:38:59,694 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 13:38:59,694 INFO L185 Difference]: Start difference. First operand has 79 places, 201 transitions, 599 flow. Second operand 3 states and 983 transitions. [2021-03-24 13:38:59,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 198 transitions, 618 flow [2021-03-24 13:38:59,696 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 13:38:59,697 INFO L241 Difference]: Finished difference. Result has 80 places, 198 transitions, 591 flow [2021-03-24 13:38:59,698 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 13:38:59,698 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -18 predicate places. [2021-03-24 13:38:59,698 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 198 transitions, 591 flow [2021-03-24 13:38:59,698 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 13:38:59,698 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:59,698 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 13:38:59,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 13:38:59,698 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 13:38:59,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:59,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1216971457, now seen corresponding path program 1 times [2021-03-24 13:38:59,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:59,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718813724] [2021-03-24 13:38:59,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:59,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:59,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:38:59,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:59,711 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 13:38:59,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718813724] [2021-03-24 13:38:59,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:59,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:38:59,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935465405] [2021-03-24 13:38:59,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:38:59,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:59,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:38:59,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:38:59,713 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 13:38:59,714 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 13:38:59,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:59,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 13:38:59,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:59,742 INFO L129 PetriNetUnfolder]: 120/289 cut-off events. [2021-03-24 13:38:59,743 INFO L130 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2021-03-24 13:38:59,743 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 13:38:59,744 INFO L132 encePairwiseOnDemand]: 324/339 looper letters, 2 selfloop transitions, 1 changer transitions 0/184 dead transitions. [2021-03-24 13:38:59,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 184 transitions, 555 flow [2021-03-24 13:38:59,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:38:59,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:38:59,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 13:38:59,746 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 13:38:59,746 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:59,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,748 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 13:38:59,749 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 13:38:59,749 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 13:38:59,749 INFO L185 Difference]: Start difference. First operand has 80 places, 198 transitions, 591 flow. Second operand 3 states and 983 transitions. [2021-03-24 13:38:59,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 184 transitions, 555 flow [2021-03-24 13:38:59,751 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 13:38:59,752 INFO L241 Difference]: Finished difference. Result has 81 places, 184 transitions, 550 flow [2021-03-24 13:38:59,752 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 13:38:59,752 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -17 predicate places. [2021-03-24 13:38:59,753 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 184 transitions, 550 flow [2021-03-24 13:38:59,753 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 13:38:59,753 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:59,753 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 13:38:59,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 13:38:59,753 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 13:38:59,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:59,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1539067609, now seen corresponding path program 1 times [2021-03-24 13:38:59,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:59,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414099527] [2021-03-24 13:38:59,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:59,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:59,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:38:59,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:59,766 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 13:38:59,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414099527] [2021-03-24 13:38:59,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:59,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:38:59,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397129704] [2021-03-24 13:38:59,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:38:59,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:59,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:38:59,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:38:59,768 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-03-24 13:38:59,769 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 13:38:59,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:59,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-03-24 13:38:59,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:59,786 INFO L129 PetriNetUnfolder]: 0/49 cut-off events. [2021-03-24 13:38:59,787 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-24 13:38:59,787 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 13:38:59,787 INFO L132 encePairwiseOnDemand]: 323/339 looper letters, 1 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2021-03-24 13:38:59,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 49 transitions, 149 flow [2021-03-24 13:38:59,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:38:59,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:38:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-03-24 13:38:59,789 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-03-24 13:38:59,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:59,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-03-24 13:38:59,791 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 13:38:59,792 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 13:38:59,792 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 13:38:59,792 INFO L185 Difference]: Start difference. First operand has 81 places, 184 transitions, 550 flow. Second operand 3 states and 983 transitions. [2021-03-24 13:38:59,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 49 transitions, 149 flow [2021-03-24 13:38:59,793 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 13:38:59,793 INFO L241 Difference]: Finished difference. Result has 82 places, 49 transitions, 146 flow [2021-03-24 13:38:59,793 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 13:38:59,794 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -16 predicate places. [2021-03-24 13:38:59,794 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 49 transitions, 146 flow [2021-03-24 13:38:59,794 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 13:38:59,794 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:59,794 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 13:38:59,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 13:38:59,794 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 13:38:59,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:59,795 INFO L82 PathProgramCache]: Analyzing trace with hash 501923523, now seen corresponding path program 1 times [2021-03-24 13:38:59,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:59,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595270237] [2021-03-24 13:38:59,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:59,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:38:59,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:59,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:59,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:59,949 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:38:59,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:38:59,992 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:38:59,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:39:00,042 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 13:39:00,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:00,088 INFO L142 QuantifierPusher]: treesize reduction 27, result has 67.1 percent of original size [2021-03-24 13:39:00,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-24 13:39:00,144 INFO L142 QuantifierPusher]: treesize reduction 36, result has 63.6 percent of original size [2021-03-24 13:39:00,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-24 13:39:00,211 INFO L142 QuantifierPusher]: treesize reduction 36, result has 65.7 percent of original size [2021-03-24 13:39:00,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-24 13:39:00,290 INFO L142 QuantifierPusher]: treesize reduction 36, result has 67.6 percent of original size [2021-03-24 13:39:00,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-03-24 13:39:00,392 INFO L142 QuantifierPusher]: treesize reduction 45, result has 64.8 percent of original size [2021-03-24 13:39:00,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-03-24 13:39:00,511 INFO L142 QuantifierPusher]: treesize reduction 63, result has 59.6 percent of original size [2021-03-24 13:39:00,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-24 13:39:00,640 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-03-24 13:39:00,647 INFO L142 QuantifierPusher]: treesize reduction 72, result has 58.4 percent of original size [2021-03-24 13:39:00,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-24 13:39:00,785 INFO L142 QuantifierPusher]: treesize reduction 81, result has 57.4 percent of original size [2021-03-24 13:39:00,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-03-24 13:39:00,946 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-03-24 13:39:00,959 INFO L142 QuantifierPusher]: treesize reduction 99, result has 53.3 percent of original size [2021-03-24 13:39:00,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-24 13:39:01,095 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-03-24 13:39:01,113 INFO L142 QuantifierPusher]: treesize reduction 117, result has 50.0 percent of original size [2021-03-24 13:39:01,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-03-24 13:39:01,222 INFO L142 QuantifierPusher]: treesize reduction 135, result has 47.3 percent of original size [2021-03-24 13:39:01,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-03-24 13:39:01,330 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 13:39:01,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595270237] [2021-03-24 13:39:01,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:01,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-24 13:39:01,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766674869] [2021-03-24 13:39:01,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 13:39:01,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:01,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 13:39:01,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-03-24 13:39:01,338 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 339 [2021-03-24 13:39:01,341 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 13:39:01,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:01,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 339 [2021-03-24 13:39:01,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:42,743 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-03-24 13:40:42,838 INFO L129 PetriNetUnfolder]: 638979/738307 cut-off events. [2021-03-24 13:40:42,838 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:40:48,442 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 13:40:50,703 INFO L132 encePairwiseOnDemand]: 322/339 looper letters, 135 selfloop transitions, 15 changer transitions 1/183 dead transitions. [2021-03-24 13:40:50,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 183 transitions, 716 flow [2021-03-24 13:40:50,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-24 13:40:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-03-24 13:40:50,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5642 transitions. [2021-03-24 13:40:50,709 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246148803670927 [2021-03-24 13:40:50,710 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5642 transitions. [2021-03-24 13:40:50,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5642 transitions. [2021-03-24 13:40:50,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:50,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5642 transitions. [2021-03-24 13:40:50,716 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 13:40:50,723 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 13:40:50,724 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 13:40:50,724 INFO L185 Difference]: Start difference. First operand has 82 places, 49 transitions, 146 flow. Second operand 18 states and 5642 transitions. [2021-03-24 13:40:50,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 183 transitions, 716 flow [2021-03-24 13:40:50,729 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 13:40:50,732 INFO L241 Difference]: Finished difference. Result has 114 places, 63 transitions, 264 flow [2021-03-24 13:40:50,732 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 13:40:50,732 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, 16 predicate places. [2021-03-24 13:40:50,732 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 63 transitions, 264 flow [2021-03-24 13:40:50,733 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 13:40:50,733 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:50,734 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 13:40:50,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 13:40:50,734 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 13:40:50,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:50,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1947470939, now seen corresponding path program 2 times [2021-03-24 13:40:50,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:50,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891697312] [2021-03-24 13:40:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:50,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:50,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:50,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:50,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:50,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:50,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:50,842 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:50,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:50,857 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:40:50,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:40:50,879 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:50,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:50,902 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:40:50,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:40:50,931 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-24 13:40:50,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-24 13:40:50,969 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-24 13:40:50,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-24 13:40:51,015 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-24 13:40:51,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-24 13:40:51,072 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-24 13:40:51,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-24 13:40:51,132 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-24 13:40:51,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-24 13:40:51,212 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-24 13:40:51,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-24 13:40:51,298 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-03-24 13:40:51,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-24 13:40:51,384 INFO L142 QuantifierPusher]: treesize reduction 108, result has 50.2 percent of original size [2021-03-24 13:40:51,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-03-24 13:40:51,495 INFO L142 QuantifierPusher]: treesize reduction 126, result has 48.6 percent of original size [2021-03-24 13:40:51,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-03-24 13:40:51,594 INFO L142 QuantifierPusher]: treesize reduction 135, result has 47.3 percent of original size [2021-03-24 13:40:51,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-03-24 13:40:51,682 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 13:40:51,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891697312] [2021-03-24 13:40:51,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:51,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-24 13:40:51,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418180431] [2021-03-24 13:40:51,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 13:40:51,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:51,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 13:40:51,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-03-24 13:40:51,687 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 339 [2021-03-24 13:40:51,689 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 13:40:51,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:51,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 339 [2021-03-24 13:40:51,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand