/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_16.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 04:42:39,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 04:42:39,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 04:42:39,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 04:42:39,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 04:42:39,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 04:42:39,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 04:42:39,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 04:42:39,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 04:42:39,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 04:42:39,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 04:42:39,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 04:42:39,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 04:42:39,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 04:42:39,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 04:42:39,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 04:42:39,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 04:42:39,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 04:42:39,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 04:42:39,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 04:42:39,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 04:42:39,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 04:42:39,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 04:42:39,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 04:42:39,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 04:42:39,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 04:42:39,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 04:42:39,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 04:42:39,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 04:42:39,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 04:42:39,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 04:42:39,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 04:42:39,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 04:42:39,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 04:42:39,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 04:42:39,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 04:42:39,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 04:42:39,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 04:42:39,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 04:42:39,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 04:42:39,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 04:42:39,312 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-NoLbe.epf [2021-03-11 04:42:39,346 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 04:42:39,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 04:42:39,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 04:42:39,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 04:42:39,349 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 04:42:39,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 04:42:39,350 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 04:42:39,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 04:42:39,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 04:42:39,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 04:42:39,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 04:42:39,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 04:42:39,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 04:42:39,351 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 04:42:39,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 04:42:39,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 04:42:39,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 04:42:39,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 04:42:39,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 04:42:39,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 04:42:39,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 04:42:39,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 04:42:39,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 04:42:39,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 04:42:39,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 04:42:39,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 04:42:39,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 04:42:39,353 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 04:42:39,353 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 04:42:39,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 04:42:39,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 04:42:39,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 04:42:39,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 04:42:39,630 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 04:42:39,631 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 04:42:39,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_16.bpl [2021-03-11 04:42:39,632 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_16.bpl' [2021-03-11 04:42:39,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 04:42:39,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 04:42:39,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 04:42:39,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 04:42:39,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 04:42:39,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:42:39" (1/1) ... [2021-03-11 04:42:39,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:42:39" (1/1) ... [2021-03-11 04:42:39,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 04:42:39,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 04:42:39,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 04:42:39,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 04:42:39,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:42:39" (1/1) ... [2021-03-11 04:42:39,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:42:39" (1/1) ... [2021-03-11 04:42:39,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:42:39" (1/1) ... [2021-03-11 04:42:39,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:42:39" (1/1) ... [2021-03-11 04:42:39,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:42:39" (1/1) ... [2021-03-11 04:42:39,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:42:39" (1/1) ... [2021-03-11 04:42:39,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:42:39" (1/1) ... [2021-03-11 04:42:39,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 04:42:39,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 04:42:39,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 04:42:39,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 04:42:39,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:42:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 04:42:39,769 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_14 given in one single declaration [2021-03-11 04:42:39,769 INFO L130 BoogieDeclarations]: Found specification of procedure set_14 [2021-03-11 04:42:39,769 INFO L138 BoogieDeclarations]: Found implementation of procedure set_14 [2021-03-11 04:42:39,769 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_15 given in one single declaration [2021-03-11 04:42:39,770 INFO L130 BoogieDeclarations]: Found specification of procedure set_15 [2021-03-11 04:42:39,770 INFO L138 BoogieDeclarations]: Found implementation of procedure set_15 [2021-03-11 04:42:39,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-11 04:42:39,771 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-11 04:42:39,771 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-11 04:42:39,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-11 04:42:39,771 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-11 04:42:39,771 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-11 04:42:39,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-11 04:42:39,771 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-11 04:42:39,771 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-11 04:42:39,772 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-11 04:42:39,772 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-11 04:42:39,772 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-11 04:42:39,772 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-11 04:42:39,772 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-11 04:42:39,772 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-11 04:42:39,772 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-03-11 04:42:39,772 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-03-11 04:42:39,772 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-03-11 04:42:39,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 04:42:39,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 04:42:39,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 04:42:39,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-03-11 04:42:39,773 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-03-11 04:42:39,773 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-03-11 04:42:39,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-11 04:42:39,773 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-11 04:42:39,773 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-11 04:42:39,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-03-11 04:42:39,774 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-03-11 04:42:39,774 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-03-11 04:42:39,774 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-11 04:42:39,774 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-11 04:42:39,774 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-11 04:42:39,774 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-03-11 04:42:39,774 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-03-11 04:42:39,774 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-03-11 04:42:39,774 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-11 04:42:39,774 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-11 04:42:39,775 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-11 04:42:39,775 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-03-11 04:42:39,775 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-03-11 04:42:39,775 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-03-11 04:42:39,775 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-11 04:42:39,775 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-11 04:42:39,775 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-11 04:42:39,776 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 04:42:40,054 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 04:42:40,054 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 04:42:40,055 INFO L202 PluginConnector]: Adding new model example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:42:40 BoogieIcfgContainer [2021-03-11 04:42:40,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 04:42:40,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 04:42:40,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 04:42:40,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 04:42:40,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:42:39" (1/2) ... [2021-03-11 04:42:40,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5905a54b and model type example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 04:42:40, skipping insertion in model container [2021-03-11 04:42:40,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:42:40" (2/2) ... [2021-03-11 04:42:40,061 INFO L111 eAbstractionObserver]: Analyzing ICFG example_16.bpl [2021-03-11 04:42:40,084 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 04:42:40,088 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 04:42:40,088 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 04:42:40,477 INFO L149 ThreadInstanceAdder]: Constructed 256 joinOtherThreadTransitions. [2021-03-11 04:42:40,491 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-03-11 04:42:40,507 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 04:42:40,507 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 04:42:40,507 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 04:42:40,508 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 04:42:40,508 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 04:42:40,508 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 04:42:40,508 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 04:42:40,508 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 04:42:40,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 323 transitions, 1494 flow [2021-03-11 04:43:20,204 INFO L129 PetriNetUnfolder]: 458753/524339 cut-off events. [2021-03-11 04:43:20,204 INFO L130 PetriNetUnfolder]: For 524288/524288 co-relation queries the response was YES. [2021-03-11 04:43:24,268 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. [2021-03-11 04:43:24,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 323 transitions, 1494 flow [2021-03-11 04:43:27,095 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 305 transitions, 1426 flow [2021-03-11 04:44:12,235 INFO L129 PetriNetUnfolder]: 458753/524336 cut-off events. [2021-03-11 04:44:12,235 INFO L130 PetriNetUnfolder]: For 524288/524288 co-relation queries the response was YES. [2021-03-11 04:44:12,235 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:44:12,236 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:44:12,236 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]=== [2021-03-11 04:44:12,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:44:12,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1488682997, now seen corresponding path program 1 times [2021-03-11 04:44:12,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:44:12,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75531602] [2021-03-11 04:44:12,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:44:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:44:12,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:44:12,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:44:12,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:44:12,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:44:12,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:44:12,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:44:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:44:12,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75531602] [2021-03-11 04:44:12,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:44:12,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:44:12,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166748108] [2021-03-11 04:44:12,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:44:12,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:44:12,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:44:12,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:44:12,411 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-03-11 04:44:12,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 305 transitions, 1426 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:44:12,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:44:12,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-03-11 04:44:12,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:44:33,018 INFO L129 PetriNetUnfolder]: 235058/272818 cut-off events. [2021-03-11 04:44:33,018 INFO L130 PetriNetUnfolder]: For 366130/366130 co-relation queries the response was YES. [2021-03-11 04:44:35,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 550582 conditions, 272818 events. 235058/272818 cut-off events. For 366130/366130 co-relation queries the response was YES. Maximal size of possible extension queue 7060. Compared 1345213 event pairs, 0 based on Foata normal form. 27824/300642 useless extension candidates. Maximal degree in co-relation 491567. Up to 51480 conditions per place. [2021-03-11 04:44:37,002 INFO L132 encePairwiseOnDemand]: 312/323 looper letters, 6 selfloop transitions, 1 changer transitions 0/295 dead transitions. [2021-03-11 04:44:37,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 295 transitions, 1390 flow [2021-03-11 04:44:37,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:44:37,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:44:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-03-11 04:44:37,015 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-03-11 04:44:37,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-03-11 04:44:37,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-03-11 04:44:37,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:44:37,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-03-11 04:44:37,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:44:37,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:44:37,032 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:44:37,033 INFO L185 Difference]: Start difference. First operand has 114 places, 305 transitions, 1426 flow. Second operand 3 states and 935 transitions. [2021-03-11 04:44:37,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 295 transitions, 1390 flow [2021-03-11 04:44:52,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 295 transitions, 866 flow, removed 0 selfloop flow, removed 32 redundant places. [2021-03-11 04:44:52,773 INFO L241 Difference]: Finished difference. Result has 84 places, 295 transitions, 854 flow [2021-03-11 04:44:52,775 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=854, PETRI_PLACES=84, PETRI_TRANSITIONS=295} [2021-03-11 04:44:52,776 INFO L335 CegarLoopForPetriNet]: 114 programPoint places, -30 predicate places. [2021-03-11 04:44:52,776 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 295 transitions, 854 flow [2021-03-11 04:44:52,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:44:52,776 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:44:52,777 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:44:52,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 04:44:52,777 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]=== [2021-03-11 04:44:52,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:44:52,778 INFO L82 PathProgramCache]: Analyzing trace with hash 2047528087, now seen corresponding path program 1 times [2021-03-11 04:44:52,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:44:52,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865258360] [2021-03-11 04:44:52,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:44:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:44:52,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:44:52,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:44:52,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:44:52,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:44:52,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:44:52,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:44:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:44:52,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865258360] [2021-03-11 04:44:52,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:44:52,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:44:52,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091488875] [2021-03-11 04:44:52,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:44:52,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:44:52,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:44:52,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:44:52,825 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-03-11 04:44:52,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 295 transitions, 854 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:44:52,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:44:52,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-03-11 04:44:52,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:45:00,179 INFO L129 PetriNetUnfolder]: 135672/160521 cut-off events. [2021-03-11 04:45:00,179 INFO L130 PetriNetUnfolder]: For 17855/17855 co-relation queries the response was YES. [2021-03-11 04:45:00,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165486 conditions, 160521 events. 135672/160521 cut-off events. For 17855/17855 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 799689 event pairs, 0 based on Foata normal form. 12911/173432 useless extension candidates. Maximal degree in co-relation 165459. Up to 24024 conditions per place. [2021-03-11 04:45:01,868 INFO L132 encePairwiseOnDemand]: 313/323 looper letters, 7 selfloop transitions, 1 changer transitions 0/286 dead transitions. [2021-03-11 04:45:01,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 286 transitions, 843 flow [2021-03-11 04:45:01,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:45:01,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:45:01,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-03-11 04:45:01,871 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-03-11 04:45:01,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-03-11 04:45:01,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-03-11 04:45:01,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:45:01,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-03-11 04:45:01,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:01,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:01,881 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:01,881 INFO L185 Difference]: Start difference. First operand has 84 places, 295 transitions, 854 flow. Second operand 3 states and 935 transitions. [2021-03-11 04:45:01,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 286 transitions, 843 flow [2021-03-11 04:45:01,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 286 transitions, 842 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:45:01,978 INFO L241 Difference]: Finished difference. Result has 85 places, 286 transitions, 828 flow [2021-03-11 04:45:01,978 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=828, PETRI_PLACES=85, PETRI_TRANSITIONS=286} [2021-03-11 04:45:01,979 INFO L335 CegarLoopForPetriNet]: 114 programPoint places, -29 predicate places. [2021-03-11 04:45:01,979 INFO L480 AbstractCegarLoop]: Abstraction has has 85 places, 286 transitions, 828 flow [2021-03-11 04:45:01,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:01,980 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:45:01,980 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:45:01,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 04:45:01,980 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]=== [2021-03-11 04:45:01,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:45:01,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1706813583, now seen corresponding path program 1 times [2021-03-11 04:45:01,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:45:01,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210063350] [2021-03-11 04:45:01,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:45:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:45:02,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:02,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:02,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:02,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:45:02,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:02,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:02,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:45:02,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210063350] [2021-03-11 04:45:02,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:45:02,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:45:02,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400399953] [2021-03-11 04:45:02,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:45:02,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:45:02,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:45:02,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:45:02,061 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-03-11 04:45:02,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 286 transitions, 828 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:02,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:45:02,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-03-11 04:45:02,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:45:09,413 INFO L129 PetriNetUnfolder]: 125350/149106 cut-off events. [2021-03-11 04:45:09,413 INFO L130 PetriNetUnfolder]: For 10756/10756 co-relation queries the response was YES. [2021-03-11 04:45:10,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158791 conditions, 149106 events. 125350/149106 cut-off events. For 10756/10756 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 747452 event pairs, 0 based on Foata normal form. 1093/150199 useless extension candidates. Maximal degree in co-relation 158766. Up to 24024 conditions per place. [2021-03-11 04:45:10,865 INFO L132 encePairwiseOnDemand]: 317/323 looper letters, 11 selfloop transitions, 1 changer transitions 0/281 dead transitions. [2021-03-11 04:45:10,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 281 transitions, 837 flow [2021-03-11 04:45:10,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:45:10,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:45:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-03-11 04:45:10,868 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-03-11 04:45:10,868 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-03-11 04:45:10,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-03-11 04:45:10,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:45:10,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-03-11 04:45:10,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:10,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:10,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:10,873 INFO L185 Difference]: Start difference. First operand has 85 places, 286 transitions, 828 flow. Second operand 3 states and 935 transitions. [2021-03-11 04:45:10,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 281 transitions, 837 flow [2021-03-11 04:45:10,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 281 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:45:10,900 INFO L241 Difference]: Finished difference. Result has 86 places, 281 transitions, 814 flow [2021-03-11 04:45:10,900 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=814, PETRI_PLACES=86, PETRI_TRANSITIONS=281} [2021-03-11 04:45:10,901 INFO L335 CegarLoopForPetriNet]: 114 programPoint places, -28 predicate places. [2021-03-11 04:45:10,901 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 281 transitions, 814 flow [2021-03-11 04:45:10,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:10,901 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:45:10,902 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:45:10,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 04:45:10,902 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]=== [2021-03-11 04:45:10,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:45:10,902 INFO L82 PathProgramCache]: Analyzing trace with hash 767172921, now seen corresponding path program 1 times [2021-03-11 04:45:10,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:45:10,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485065267] [2021-03-11 04:45:10,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:45:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:45:10,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:10,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:10,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:10,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:45:10,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:10,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:45:10,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485065267] [2021-03-11 04:45:10,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:45:10,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:45:10,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735083382] [2021-03-11 04:45:10,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:45:10,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:45:10,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:45:10,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:45:10,944 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-03-11 04:45:10,945 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 281 transitions, 814 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:10,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:45:10,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-03-11 04:45:10,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:45:16,053 INFO L129 PetriNetUnfolder]: 96298/116257 cut-off events. [2021-03-11 04:45:16,053 INFO L130 PetriNetUnfolder]: For 9962/9962 co-relation queries the response was YES. [2021-03-11 04:45:16,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122940 conditions, 116257 events. 96298/116257 cut-off events. For 9962/9962 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 596173 event pairs, 0 based on Foata normal form. 3302/119559 useless extension candidates. Maximal degree in co-relation 122924. Up to 21840 conditions per place. [2021-03-11 04:45:17,208 INFO L132 encePairwiseOnDemand]: 315/323 looper letters, 9 selfloop transitions, 1 changer transitions 0/274 dead transitions. [2021-03-11 04:45:17,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 274 transitions, 813 flow [2021-03-11 04:45:17,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:45:17,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:45:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-03-11 04:45:17,215 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-03-11 04:45:17,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-03-11 04:45:17,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-03-11 04:45:17,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:45:17,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-03-11 04:45:17,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:17,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:17,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:17,220 INFO L185 Difference]: Start difference. First operand has 86 places, 281 transitions, 814 flow. Second operand 3 states and 935 transitions. [2021-03-11 04:45:17,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 274 transitions, 813 flow [2021-03-11 04:45:17,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 274 transitions, 812 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:45:17,245 INFO L241 Difference]: Finished difference. Result has 87 places, 274 transitions, 794 flow [2021-03-11 04:45:17,245 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=794, PETRI_PLACES=87, PETRI_TRANSITIONS=274} [2021-03-11 04:45:17,246 INFO L335 CegarLoopForPetriNet]: 114 programPoint places, -27 predicate places. [2021-03-11 04:45:17,246 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 274 transitions, 794 flow [2021-03-11 04:45:17,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:17,247 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:45:17,247 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:45:17,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 04:45:17,247 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]=== [2021-03-11 04:45:17,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:45:17,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1342949559, now seen corresponding path program 1 times [2021-03-11 04:45:17,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:45:17,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630735564] [2021-03-11 04:45:17,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:45:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:45:17,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:17,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:17,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:17,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:45:17,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:17,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:17,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:45:17,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630735564] [2021-03-11 04:45:17,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:45:17,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:45:17,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347970460] [2021-03-11 04:45:17,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:45:17,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:45:17,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:45:17,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:45:17,309 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-03-11 04:45:17,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 274 transitions, 794 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:17,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:45:17,310 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-03-11 04:45:17,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:45:21,106 INFO L129 PetriNetUnfolder]: 70668/86633 cut-off events. [2021-03-11 04:45:21,106 INFO L130 PetriNetUnfolder]: For 7684/7684 co-relation queries the response was YES. [2021-03-11 04:45:21,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91601 conditions, 86633 events. 70668/86633 cut-off events. For 7684/7684 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 449160 event pairs, 0 based on Foata normal form. 2740/89373 useless extension candidates. Maximal degree in co-relation 91585. Up to 21840 conditions per place. [2021-03-11 04:45:21,711 INFO L132 encePairwiseOnDemand]: 314/323 looper letters, 8 selfloop transitions, 1 changer transitions 0/266 dead transitions. [2021-03-11 04:45:21,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 266 transitions, 788 flow [2021-03-11 04:45:21,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:45:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:45:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-03-11 04:45:21,714 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-03-11 04:45:21,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-03-11 04:45:21,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-03-11 04:45:21,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:45:21,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-03-11 04:45:21,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:21,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:21,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:21,718 INFO L185 Difference]: Start difference. First operand has 87 places, 274 transitions, 794 flow. Second operand 3 states and 935 transitions. [2021-03-11 04:45:21,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 266 transitions, 788 flow [2021-03-11 04:45:21,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 266 transitions, 787 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:45:21,736 INFO L241 Difference]: Finished difference. Result has 88 places, 266 transitions, 771 flow [2021-03-11 04:45:21,736 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=771, PETRI_PLACES=88, PETRI_TRANSITIONS=266} [2021-03-11 04:45:21,737 INFO L335 CegarLoopForPetriNet]: 114 programPoint places, -26 predicate places. [2021-03-11 04:45:21,737 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 266 transitions, 771 flow [2021-03-11 04:45:21,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:21,737 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:45:21,737 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:45:21,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 04:45:21,738 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]=== [2021-03-11 04:45:21,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:45:21,738 INFO L82 PathProgramCache]: Analyzing trace with hash 856950365, now seen corresponding path program 1 times [2021-03-11 04:45:21,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:45:21,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390828628] [2021-03-11 04:45:21,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:45:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:45:21,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:21,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:21,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:21,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:45:21,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:21,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:45:21,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390828628] [2021-03-11 04:45:21,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:45:21,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:45:21,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127934246] [2021-03-11 04:45:21,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:45:21,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:45:21,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:45:21,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:45:21,776 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-03-11 04:45:21,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 266 transitions, 771 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:21,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:45:21,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-03-11 04:45:21,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:45:22,981 INFO L129 PetriNetUnfolder]: 22146/28352 cut-off events. [2021-03-11 04:45:22,981 INFO L130 PetriNetUnfolder]: For 5582/5582 co-relation queries the response was YES. [2021-03-11 04:45:23,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28953 conditions, 28352 events. 22146/28352 cut-off events. For 5582/5582 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 144898 event pairs, 0 based on Foata normal form. 5006/33358 useless extension candidates. Maximal degree in co-relation 28937. Up to 5460 conditions per place. [2021-03-11 04:45:23,387 INFO L132 encePairwiseOnDemand]: 310/323 looper letters, 4 selfloop transitions, 1 changer transitions 0/254 dead transitions. [2021-03-11 04:45:23,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 254 transitions, 745 flow [2021-03-11 04:45:23,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:45:23,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:45:23,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-03-11 04:45:23,389 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-03-11 04:45:23,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-03-11 04:45:23,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-03-11 04:45:23,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:45:23,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-03-11 04:45:23,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:23,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:23,393 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:23,393 INFO L185 Difference]: Start difference. First operand has 88 places, 266 transitions, 771 flow. Second operand 3 states and 935 transitions. [2021-03-11 04:45:23,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 254 transitions, 745 flow [2021-03-11 04:45:23,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 254 transitions, 744 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:45:23,398 INFO L241 Difference]: Finished difference. Result has 89 places, 254 transitions, 736 flow [2021-03-11 04:45:23,399 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=736, PETRI_PLACES=89, PETRI_TRANSITIONS=254} [2021-03-11 04:45:23,399 INFO L335 CegarLoopForPetriNet]: 114 programPoint places, -25 predicate places. [2021-03-11 04:45:23,399 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 254 transitions, 736 flow [2021-03-11 04:45:23,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:23,400 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:45:23,400 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:45:23,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 04:45:23,400 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]=== [2021-03-11 04:45:23,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:45:23,400 INFO L82 PathProgramCache]: Analyzing trace with hash 536551777, now seen corresponding path program 1 times [2021-03-11 04:45:23,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:45:23,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298497136] [2021-03-11 04:45:23,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:45:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:45:23,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:23,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:23,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:23,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:45:23,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:23,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:23,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:45:23,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298497136] [2021-03-11 04:45:23,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:45:23,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:45:23,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180887171] [2021-03-11 04:45:23,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:45:23,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:45:23,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:45:23,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:45:23,442 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-03-11 04:45:23,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 254 transitions, 736 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:23,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:45:23,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-03-11 04:45:23,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:45:23,870 INFO L129 PetriNetUnfolder]: 8415/11362 cut-off events. [2021-03-11 04:45:23,871 INFO L130 PetriNetUnfolder]: For 1959/1959 co-relation queries the response was YES. [2021-03-11 04:45:23,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11964 conditions, 11362 events. 8415/11362 cut-off events. For 1959/1959 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 57665 event pairs, 0 based on Foata normal form. 1383/12745 useless extension candidates. Maximal degree in co-relation 11948. Up to 1820 conditions per place. [2021-03-11 04:45:23,960 INFO L132 encePairwiseOnDemand]: 311/323 looper letters, 5 selfloop transitions, 1 changer transitions 0/243 dead transitions. [2021-03-11 04:45:23,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 243 transitions, 715 flow [2021-03-11 04:45:23,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:45:23,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:45:23,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-03-11 04:45:23,963 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-03-11 04:45:23,963 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-03-11 04:45:23,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-03-11 04:45:23,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:45:23,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-03-11 04:45:23,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:23,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:23,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:23,967 INFO L185 Difference]: Start difference. First operand has 89 places, 254 transitions, 736 flow. Second operand 3 states and 935 transitions. [2021-03-11 04:45:23,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 243 transitions, 715 flow [2021-03-11 04:45:23,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 243 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:45:23,973 INFO L241 Difference]: Finished difference. Result has 90 places, 243 transitions, 704 flow [2021-03-11 04:45:23,973 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=704, PETRI_PLACES=90, PETRI_TRANSITIONS=243} [2021-03-11 04:45:23,974 INFO L335 CegarLoopForPetriNet]: 114 programPoint places, -24 predicate places. [2021-03-11 04:45:23,974 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 243 transitions, 704 flow [2021-03-11 04:45:23,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:23,974 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:45:23,974 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:45:23,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 04:45:23,975 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]=== [2021-03-11 04:45:23,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:45:23,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1390160295, now seen corresponding path program 1 times [2021-03-11 04:45:23,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:45:23,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614577110] [2021-03-11 04:45:23,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:45:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:45:23,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:23,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:23,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:23,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:45:23,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:23,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:45:23,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614577110] [2021-03-11 04:45:23,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:45:23,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:45:23,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678267288] [2021-03-11 04:45:23,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:45:23,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:45:23,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:45:23,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:45:23,996 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-03-11 04:45:23,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 243 transitions, 704 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:23,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:45:23,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-03-11 04:45:23,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:45:24,119 INFO L129 PetriNetUnfolder]: 2037/3001 cut-off events. [2021-03-11 04:45:24,119 INFO L130 PetriNetUnfolder]: For 795/795 co-relation queries the response was YES. [2021-03-11 04:45:24,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3149 conditions, 3001 events. 2037/3001 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 13935 event pairs, 0 based on Foata normal form. 674/3675 useless extension candidates. Maximal degree in co-relation 3133. Up to 315 conditions per place. [2021-03-11 04:45:24,140 INFO L132 encePairwiseOnDemand]: 309/323 looper letters, 3 selfloop transitions, 1 changer transitions 0/230 dead transitions. [2021-03-11 04:45:24,140 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 230 transitions, 673 flow [2021-03-11 04:45:24,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:45:24,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:45:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-03-11 04:45:24,142 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-03-11 04:45:24,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-03-11 04:45:24,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-03-11 04:45:24,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:45:24,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-03-11 04:45:24,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,146 INFO L185 Difference]: Start difference. First operand has 90 places, 243 transitions, 704 flow. Second operand 3 states and 935 transitions. [2021-03-11 04:45:24,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 230 transitions, 673 flow [2021-03-11 04:45:24,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 230 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:45:24,150 INFO L241 Difference]: Finished difference. Result has 91 places, 230 transitions, 666 flow [2021-03-11 04:45:24,151 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=666, PETRI_PLACES=91, PETRI_TRANSITIONS=230} [2021-03-11 04:45:24,151 INFO L335 CegarLoopForPetriNet]: 114 programPoint places, -23 predicate places. [2021-03-11 04:45:24,151 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 230 transitions, 666 flow [2021-03-11 04:45:24,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,151 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:45:24,151 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:45:24,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 04:45:24,152 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]=== [2021-03-11 04:45:24,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:45:24,152 INFO L82 PathProgramCache]: Analyzing trace with hash 2108326573, now seen corresponding path program 1 times [2021-03-11 04:45:24,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:45:24,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254928998] [2021-03-11 04:45:24,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:45:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:45:24,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:24,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:24,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:24,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:45:24,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:24,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:45:24,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254928998] [2021-03-11 04:45:24,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:45:24,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:45:24,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308227289] [2021-03-11 04:45:24,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:45:24,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:45:24,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:45:24,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:45:24,173 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-03-11 04:45:24,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 230 transitions, 666 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:45:24,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-03-11 04:45:24,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:45:24,305 INFO L129 PetriNetUnfolder]: 1988/2944 cut-off events. [2021-03-11 04:45:24,305 INFO L130 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2021-03-11 04:45:24,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3205 conditions, 2944 events. 1988/2944 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 13666 event pairs, 0 based on Foata normal form. 8/2952 useless extension candidates. Maximal degree in co-relation 3188. Up to 315 conditions per place. [2021-03-11 04:45:24,321 INFO L132 encePairwiseOnDemand]: 320/323 looper letters, 14 selfloop transitions, 1 changer transitions 0/228 dead transitions. [2021-03-11 04:45:24,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 228 transitions, 690 flow [2021-03-11 04:45:24,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:45:24,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:45:24,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-03-11 04:45:24,323 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-03-11 04:45:24,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-03-11 04:45:24,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-03-11 04:45:24,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:45:24,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-03-11 04:45:24,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,327 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,327 INFO L185 Difference]: Start difference. First operand has 91 places, 230 transitions, 666 flow. Second operand 3 states and 935 transitions. [2021-03-11 04:45:24,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 228 transitions, 690 flow [2021-03-11 04:45:24,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 228 transitions, 689 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:45:24,331 INFO L241 Difference]: Finished difference. Result has 92 places, 228 transitions, 661 flow [2021-03-11 04:45:24,331 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=661, PETRI_PLACES=92, PETRI_TRANSITIONS=228} [2021-03-11 04:45:24,331 INFO L335 CegarLoopForPetriNet]: 114 programPoint places, -22 predicate places. [2021-03-11 04:45:24,331 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 228 transitions, 661 flow [2021-03-11 04:45:24,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,332 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:45:24,332 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:45:24,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 04:45:24,332 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]=== [2021-03-11 04:45:24,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:45:24,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1675031057, now seen corresponding path program 1 times [2021-03-11 04:45:24,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:45:24,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339444913] [2021-03-11 04:45:24,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:45:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:45:24,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:24,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:24,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:24,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:45:24,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:24,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:24,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:45:24,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339444913] [2021-03-11 04:45:24,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:45:24,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:45:24,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582177615] [2021-03-11 04:45:24,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:45:24,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:45:24,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:45:24,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:45:24,353 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-03-11 04:45:24,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 228 transitions, 661 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:45:24,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-03-11 04:45:24,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:45:24,482 INFO L129 PetriNetUnfolder]: 1707/2600 cut-off events. [2021-03-11 04:45:24,482 INFO L130 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2021-03-11 04:45:24,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2806 conditions, 2600 events. 1707/2600 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12298 event pairs, 0 based on Foata normal form. 57/2657 useless extension candidates. Maximal degree in co-relation 2796. Up to 315 conditions per place. [2021-03-11 04:45:24,635 INFO L132 encePairwiseOnDemand]: 318/323 looper letters, 12 selfloop transitions, 1 changer transitions 0/224 dead transitions. [2021-03-11 04:45:24,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 224 transitions, 675 flow [2021-03-11 04:45:24,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:45:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:45:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-03-11 04:45:24,638 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-03-11 04:45:24,638 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-03-11 04:45:24,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-03-11 04:45:24,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:45:24,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-03-11 04:45:24,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,642 INFO L185 Difference]: Start difference. First operand has 92 places, 228 transitions, 661 flow. Second operand 3 states and 935 transitions. [2021-03-11 04:45:24,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 224 transitions, 675 flow [2021-03-11 04:45:24,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 224 transitions, 674 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:45:24,646 INFO L241 Difference]: Finished difference. Result has 93 places, 224 transitions, 650 flow [2021-03-11 04:45:24,646 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=93, PETRI_TRANSITIONS=224} [2021-03-11 04:45:24,646 INFO L335 CegarLoopForPetriNet]: 114 programPoint places, -21 predicate places. [2021-03-11 04:45:24,646 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 224 transitions, 650 flow [2021-03-11 04:45:24,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,648 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:45:24,648 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:45:24,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 04:45:24,648 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]=== [2021-03-11 04:45:24,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:45:24,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1290403375, now seen corresponding path program 1 times [2021-03-11 04:45:24,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:45:24,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205621298] [2021-03-11 04:45:24,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:45:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:45:24,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:24,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:24,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:24,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:45:24,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:24,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:45:24,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205621298] [2021-03-11 04:45:24,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:45:24,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:45:24,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775374822] [2021-03-11 04:45:24,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:45:24,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:45:24,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:45:24,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:45:24,694 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-03-11 04:45:24,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 224 transitions, 650 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:45:24,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-03-11 04:45:24,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:45:24,838 INFO L129 PetriNetUnfolder]: 1702/2594 cut-off events. [2021-03-11 04:45:24,838 INFO L130 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2021-03-11 04:45:24,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2816 conditions, 2594 events. 1702/2594 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12396 event pairs, 0 based on Foata normal form. 1/2595 useless extension candidates. Maximal degree in co-relation 2805. Up to 315 conditions per place. [2021-03-11 04:45:24,851 INFO L132 encePairwiseOnDemand]: 321/323 looper letters, 15 selfloop transitions, 1 changer transitions 0/223 dead transitions. [2021-03-11 04:45:24,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 223 transitions, 679 flow [2021-03-11 04:45:24,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:45:24,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:45:24,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-03-11 04:45:24,853 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-03-11 04:45:24,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-03-11 04:45:24,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-03-11 04:45:24,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:45:24,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-03-11 04:45:24,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,856 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,856 INFO L185 Difference]: Start difference. First operand has 93 places, 224 transitions, 650 flow. Second operand 3 states and 935 transitions. [2021-03-11 04:45:24,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 223 transitions, 679 flow [2021-03-11 04:45:24,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 223 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:45:24,860 INFO L241 Difference]: Finished difference. Result has 94 places, 223 transitions, 648 flow [2021-03-11 04:45:24,861 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=648, PETRI_PLACES=94, PETRI_TRANSITIONS=223} [2021-03-11 04:45:24,861 INFO L335 CegarLoopForPetriNet]: 114 programPoint places, -20 predicate places. [2021-03-11 04:45:24,861 INFO L480 AbstractCegarLoop]: Abstraction has has 94 places, 223 transitions, 648 flow [2021-03-11 04:45:24,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,861 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:45:24,862 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:45:24,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 04:45:24,862 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]=== [2021-03-11 04:45:24,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:45:24,862 INFO L82 PathProgramCache]: Analyzing trace with hash 445396771, now seen corresponding path program 1 times [2021-03-11 04:45:24,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:45:24,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778538919] [2021-03-11 04:45:24,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:45:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:45:24,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:24,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:24,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:24,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:45:24,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:24,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:45:24,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778538919] [2021-03-11 04:45:24,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:45:24,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:45:24,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415920438] [2021-03-11 04:45:24,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:45:24,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:45:24,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:45:24,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:45:24,880 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-03-11 04:45:24,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 223 transitions, 648 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:24,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:45:24,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-03-11 04:45:24,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:45:24,997 INFO L129 PetriNetUnfolder]: 1285/2045 cut-off events. [2021-03-11 04:45:24,998 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-03-11 04:45:25,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 2045 events. 1285/2045 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9951 event pairs, 0 based on Foata normal form. 71/2116 useless extension candidates. Maximal degree in co-relation 2189. Up to 315 conditions per place. [2021-03-11 04:45:25,010 INFO L132 encePairwiseOnDemand]: 316/323 looper letters, 10 selfloop transitions, 1 changer transitions 0/217 dead transitions. [2021-03-11 04:45:25,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 217 transitions, 652 flow [2021-03-11 04:45:25,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:45:25,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:45:25,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-03-11 04:45:25,012 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-03-11 04:45:25,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-03-11 04:45:25,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-03-11 04:45:25,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:45:25,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-03-11 04:45:25,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,016 INFO L185 Difference]: Start difference. First operand has 94 places, 223 transitions, 648 flow. Second operand 3 states and 935 transitions. [2021-03-11 04:45:25,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 217 transitions, 652 flow [2021-03-11 04:45:25,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 217 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:45:25,020 INFO L241 Difference]: Finished difference. Result has 95 places, 217 transitions, 631 flow [2021-03-11 04:45:25,020 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=631, PETRI_PLACES=95, PETRI_TRANSITIONS=217} [2021-03-11 04:45:25,020 INFO L335 CegarLoopForPetriNet]: 114 programPoint places, -19 predicate places. [2021-03-11 04:45:25,020 INFO L480 AbstractCegarLoop]: Abstraction has has 95 places, 217 transitions, 631 flow [2021-03-11 04:45:25,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,021 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:45:25,021 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:45:25,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 04:45:25,021 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]=== [2021-03-11 04:45:25,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:45:25,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1714776709, now seen corresponding path program 1 times [2021-03-11 04:45:25,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:45:25,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538390399] [2021-03-11 04:45:25,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:45:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:45:25,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:25,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:25,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:25,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:45:25,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:25,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:45:25,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538390399] [2021-03-11 04:45:25,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:45:25,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:45:25,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467215137] [2021-03-11 04:45:25,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:45:25,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:45:25,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:45:25,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:45:25,039 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-03-11 04:45:25,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 217 transitions, 631 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:45:25,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-03-11 04:45:25,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:45:25,155 INFO L129 PetriNetUnfolder]: 1240/1985 cut-off events. [2021-03-11 04:45:25,155 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2021-03-11 04:45:25,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2138 conditions, 1985 events. 1240/1985 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9592 event pairs, 0 based on Foata normal form. 10/1995 useless extension candidates. Maximal degree in co-relation 2130. Up to 315 conditions per place. [2021-03-11 04:45:25,166 INFO L132 encePairwiseOnDemand]: 319/323 looper letters, 13 selfloop transitions, 1 changer transitions 0/214 dead transitions. [2021-03-11 04:45:25,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 214 transitions, 650 flow [2021-03-11 04:45:25,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:45:25,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:45:25,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-03-11 04:45:25,168 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-03-11 04:45:25,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-03-11 04:45:25,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-03-11 04:45:25,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:45:25,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-03-11 04:45:25,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,172 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,172 INFO L185 Difference]: Start difference. First operand has 95 places, 217 transitions, 631 flow. Second operand 3 states and 935 transitions. [2021-03-11 04:45:25,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 214 transitions, 650 flow [2021-03-11 04:45:25,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 214 transitions, 649 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:45:25,176 INFO L241 Difference]: Finished difference. Result has 96 places, 214 transitions, 623 flow [2021-03-11 04:45:25,176 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=94, 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=623, PETRI_PLACES=96, PETRI_TRANSITIONS=214} [2021-03-11 04:45:25,176 INFO L335 CegarLoopForPetriNet]: 114 programPoint places, -18 predicate places. [2021-03-11 04:45:25,177 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 214 transitions, 623 flow [2021-03-11 04:45:25,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,177 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:45:25,177 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:45:25,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 04:45:25,177 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]=== [2021-03-11 04:45:25,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:45:25,178 INFO L82 PathProgramCache]: Analyzing trace with hash -785484445, now seen corresponding path program 1 times [2021-03-11 04:45:25,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:45:25,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226594382] [2021-03-11 04:45:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:45:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:45:25,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:25,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:25,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:25,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:45:25,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:25,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:45:25,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226594382] [2021-03-11 04:45:25,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:45:25,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:45:25,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104543021] [2021-03-11 04:45:25,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:45:25,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:45:25,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:45:25,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:45:25,207 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-03-11 04:45:25,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 214 transitions, 623 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:45:25,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-03-11 04:45:25,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:45:25,240 INFO L129 PetriNetUnfolder]: 120/305 cut-off events. [2021-03-11 04:45:25,241 INFO L130 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2021-03-11 04:45:25,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 305 events. 120/305 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1045 event pairs, 0 based on Foata normal form. 105/410 useless extension candidates. Maximal degree in co-relation 346. Up to 30 conditions per place. [2021-03-11 04:45:25,242 INFO L132 encePairwiseOnDemand]: 308/323 looper letters, 2 selfloop transitions, 1 changer transitions 0/200 dead transitions. [2021-03-11 04:45:25,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 200 transitions, 587 flow [2021-03-11 04:45:25,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:45:25,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:45:25,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-03-11 04:45:25,245 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-03-11 04:45:25,245 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-03-11 04:45:25,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-03-11 04:45:25,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:45:25,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-03-11 04:45:25,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,248 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,248 INFO L185 Difference]: Start difference. First operand has 96 places, 214 transitions, 623 flow. Second operand 3 states and 935 transitions. [2021-03-11 04:45:25,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 200 transitions, 587 flow [2021-03-11 04:45:25,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 200 transitions, 586 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:45:25,251 INFO L241 Difference]: Finished difference. Result has 97 places, 200 transitions, 582 flow [2021-03-11 04:45:25,251 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=582, PETRI_PLACES=97, PETRI_TRANSITIONS=200} [2021-03-11 04:45:25,252 INFO L335 CegarLoopForPetriNet]: 114 programPoint places, -17 predicate places. [2021-03-11 04:45:25,252 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 200 transitions, 582 flow [2021-03-11 04:45:25,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,253 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:45:25,253 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:45:25,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 04:45:25,253 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]=== [2021-03-11 04:45:25,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:45:25,254 INFO L82 PathProgramCache]: Analyzing trace with hash 148968093, now seen corresponding path program 1 times [2021-03-11 04:45:25,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:45:25,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946987874] [2021-03-11 04:45:25,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:45:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:45:25,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:25,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:25,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:25,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:45:25,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:25,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:45:25,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946987874] [2021-03-11 04:45:25,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:45:25,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:45:25,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845302603] [2021-03-11 04:45:25,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:45:25,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:45:25,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:45:25,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:45:25,271 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-03-11 04:45:25,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 200 transitions, 582 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:45:25,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-03-11 04:45:25,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:45:25,291 INFO L129 PetriNetUnfolder]: 0/65 cut-off events. [2021-03-11 04:45:25,291 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-11 04:45:25,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 65 events. 0/65 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 15/80 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 04:45:25,292 INFO L132 encePairwiseOnDemand]: 307/323 looper letters, 1 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2021-03-11 04:45:25,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 65 transitions, 181 flow [2021-03-11 04:45:25,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:45:25,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:45:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-03-11 04:45:25,293 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-03-11 04:45:25,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-03-11 04:45:25,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-03-11 04:45:25,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:45:25,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-03-11 04:45:25,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,296 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,297 INFO L185 Difference]: Start difference. First operand has 97 places, 200 transitions, 582 flow. Second operand 3 states and 935 transitions. [2021-03-11 04:45:25,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 65 transitions, 181 flow [2021-03-11 04:45:25,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 65 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:45:25,298 INFO L241 Difference]: Finished difference. Result has 98 places, 65 transitions, 178 flow [2021-03-11 04:45:25,299 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=98, PETRI_TRANSITIONS=65} [2021-03-11 04:45:25,299 INFO L335 CegarLoopForPetriNet]: 114 programPoint places, -16 predicate places. [2021-03-11 04:45:25,299 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 65 transitions, 178 flow [2021-03-11 04:45:25,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:45:25,300 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:45:25,300 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:45:25,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 04:45:25,300 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]=== [2021-03-11 04:45:25,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:45:25,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1628173329, now seen corresponding path program 1 times [2021-03-11 04:45:25,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:45:25,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27369265] [2021-03-11 04:45:25,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:45:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:45:25,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:25,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:45:25,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:45:25,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:45:25,477 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:45:25,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:45:25,497 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:45:25,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:45:25,525 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 04:45:25,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 04:45:25,556 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 04:45:25,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 04:45:25,594 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:45:25,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:45:25,635 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-03-11 04:45:25,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-11 04:45:25,703 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-03-11 04:45:25,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-11 04:45:25,803 INFO L142 QuantifierPusher]: treesize reduction 45, result has 61.2 percent of original size [2021-03-11 04:45:25,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-11 04:45:25,909 INFO L142 QuantifierPusher]: treesize reduction 54, result has 59.4 percent of original size [2021-03-11 04:45:25,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-03-11 04:45:26,042 INFO L142 QuantifierPusher]: treesize reduction 63, result has 58.0 percent of original size [2021-03-11 04:45:26,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-03-11 04:45:26,184 INFO L142 QuantifierPusher]: treesize reduction 81, result has 54.5 percent of original size [2021-03-11 04:45:26,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-11 04:45:26,321 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-03-11 04:45:26,331 INFO L142 QuantifierPusher]: treesize reduction 90, result has 53.8 percent of original size [2021-03-11 04:45:26,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-11 04:45:26,472 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-03-11 04:45:26,481 INFO L142 QuantifierPusher]: treesize reduction 99, result has 53.3 percent of original size [2021-03-11 04:45:26,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 04:45:26,642 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-03-11 04:45:26,649 INFO L142 QuantifierPusher]: treesize reduction 117, result has 50.0 percent of original size [2021-03-11 04:45:26,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-03-11 04:45:26,763 INFO L142 QuantifierPusher]: treesize reduction 135, result has 47.3 percent of original size [2021-03-11 04:45:26,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-03-11 04:45:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:45:26,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27369265] [2021-03-11 04:45:26,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:45:26,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 04:45:26,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128929904] [2021-03-11 04:45:26,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 04:45:26,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:45:26,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 04:45:26,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-03-11 04:45:26,872 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 323 [2021-03-11 04:45:26,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 65 transitions, 178 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) [2021-03-11 04:45:26,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:45:26,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 323 [2021-03-11 04:45:26,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:02,619 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2021-03-11 04:49:03,229 INFO L129 PetriNetUnfolder]: 638979/836377 cut-off events. [2021-03-11 04:49:03,230 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 04:49:10,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1573707 conditions, 836377 events. 638979/836377 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40440. Compared 6363089 event pairs, 212993 based on Foata normal form. 1/832209 useless extension candidates. Maximal degree in co-relation 1573699. Up to 262145 conditions per place. [2021-03-11 04:49:13,722 INFO L132 encePairwiseOnDemand]: 306/323 looper letters, 135 selfloop transitions, 15 changer transitions 1/199 dead transitions. [2021-03-11 04:49:13,723 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 199 transitions, 748 flow [2021-03-11 04:49:13,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 04:49:13,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-03-11 04:49:13,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5642 transitions. [2021-03-11 04:49:13,738 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9704162366701067 [2021-03-11 04:49:13,738 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5642 transitions. [2021-03-11 04:49:13,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5642 transitions. [2021-03-11 04:49:13,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:13,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5642 transitions. [2021-03-11 04:49:13,747 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) [2021-03-11 04:49:13,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 323.0) internal successors, (6137), 19 states have internal predecessors, (6137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:13,755 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 323.0) internal successors, (6137), 19 states have internal predecessors, (6137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:13,755 INFO L185 Difference]: Start difference. First operand has 98 places, 65 transitions, 178 flow. Second operand 18 states and 5642 transitions. [2021-03-11 04:49:13,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 199 transitions, 748 flow [2021-03-11 04:49:13,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 199 transitions, 747 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:49:13,759 INFO L241 Difference]: Finished difference. Result has 130 places, 79 transitions, 296 flow [2021-03-11 04:49:13,759 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=296, PETRI_PLACES=130, PETRI_TRANSITIONS=79} [2021-03-11 04:49:13,759 INFO L335 CegarLoopForPetriNet]: 114 programPoint places, 16 predicate places. [2021-03-11 04:49:13,759 INFO L480 AbstractCegarLoop]: Abstraction has has 130 places, 79 transitions, 296 flow [2021-03-11 04:49:13,760 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) [2021-03-11 04:49:13,760 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:13,760 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:13,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 04:49:13,761 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]=== [2021-03-11 04:49:13,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:13,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1089914735, now seen corresponding path program 2 times [2021-03-11 04:49:13,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:13,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130725728] [2021-03-11 04:49:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:13,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:13,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:13,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:13,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:13,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:13,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 04:49:13,895 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:49:13,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:49:13,908 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:49:13,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:49:13,926 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:49:13,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:49:13,950 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:49:13,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:49:13,978 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-11 04:49:13,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 04:49:14,020 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-11 04:49:14,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 04:49:14,076 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-11 04:49:14,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 04:49:14,126 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-11 04:49:14,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-11 04:49:14,181 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-11 04:49:14,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-11 04:49:14,256 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-11 04:49:14,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-11 04:49:14,327 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-03-11 04:49:14,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-11 04:49:14,426 INFO L142 QuantifierPusher]: treesize reduction 108, result has 50.2 percent of original size [2021-03-11 04:49:14,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-03-11 04:49:14,524 INFO L142 QuantifierPusher]: treesize reduction 126, result has 48.6 percent of original size [2021-03-11 04:49:14,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-03-11 04:49:14,624 INFO L142 QuantifierPusher]: treesize reduction 135, result has 47.3 percent of original size [2021-03-11 04:49:14,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-03-11 04:49:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:14,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130725728] [2021-03-11 04:49:14,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:14,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 04:49:14,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917433104] [2021-03-11 04:49:14,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 04:49:14,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:14,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 04:49:14,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-03-11 04:49:14,741 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 323 [2021-03-11 04:49:14,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 79 transitions, 296 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) [2021-03-11 04:49:14,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:14,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 323 [2021-03-11 04:49:14,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown