/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 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 14:45:59,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 14:45:59,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 14:45:59,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 14:45:59,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 14:45:59,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 14:45:59,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 14:45:59,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 14:45:59,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 14:45:59,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 14:45:59,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 14:45:59,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 14:45:59,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 14:45:59,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 14:45:59,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 14:45:59,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 14:45:59,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 14:45:59,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 14:45:59,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 14:45:59,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 14:45:59,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 14:45:59,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 14:45:59,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 14:45:59,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 14:45:59,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 14:45:59,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 14:45:59,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 14:45:59,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 14:45:59,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 14:45:59,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 14:45:59,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 14:45:59,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 14:45:59,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 14:45:59,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 14:45:59,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 14:45:59,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 14:45:59,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 14:45:59,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 14:45:59,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 14:45:59,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 14:45:59,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 14:45:59,284 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 [2021-06-10 14:45:59,303 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 14:45:59,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 14:45:59,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 14:45:59,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 14:45:59,304 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 14:45:59,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 14:45:59,305 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 14:45:59,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 14:45:59,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 14:45:59,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 14:45:59,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 14:45:59,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 14:45:59,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 14:45:59,306 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 14:45:59,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 14:45:59,306 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 14:45:59,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 14:45:59,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 14:45:59,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 14:45:59,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 14:45:59,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 14:45:59,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 14:45:59,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 14:45:59,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 14:45:59,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 14:45:59,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 14:45:59,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 14:45:59,307 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 14:45:59,308 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 14:45:59,308 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 14:45:59,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 14:45:59,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 14:45:59,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 14:45:59,610 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-10 14:45:59,611 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-10 14:45:59,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_16.bpl [2021-06-10 14:45:59,612 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_16.bpl' [2021-06-10 14:45:59,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 14:45:59,655 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-10 14:45:59,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 14:45:59,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 14:45:59,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 14:45:59,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:45:59" (1/1) ... [2021-06-10 14:45:59,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:45:59" (1/1) ... [2021-06-10 14:45:59,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 14:45:59,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 14:45:59,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 14:45:59,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 14:45:59,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:45:59" (1/1) ... [2021-06-10 14:45:59,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:45:59" (1/1) ... [2021-06-10 14:45:59,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:45:59" (1/1) ... [2021-06-10 14:45:59,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:45:59" (1/1) ... [2021-06-10 14:45:59,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:45:59" (1/1) ... [2021-06-10 14:45:59,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:45:59" (1/1) ... [2021-06-10 14:45:59,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:45:59" (1/1) ... [2021-06-10 14:45:59,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 14:45:59,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 14:45:59,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 14:45:59,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 14:45:59,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:45:59" (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 [2021-06-10 14:45:59,761 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_14 given in one single declaration [2021-06-10 14:45:59,762 INFO L130 BoogieDeclarations]: Found specification of procedure set_14 [2021-06-10 14:45:59,762 INFO L138 BoogieDeclarations]: Found implementation of procedure set_14 [2021-06-10 14:45:59,762 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_15 given in one single declaration [2021-06-10 14:45:59,762 INFO L130 BoogieDeclarations]: Found specification of procedure set_15 [2021-06-10 14:45:59,762 INFO L138 BoogieDeclarations]: Found implementation of procedure set_15 [2021-06-10 14:45:59,762 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-10 14:45:59,762 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-10 14:45:59,763 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-10 14:45:59,763 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-10 14:45:59,763 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-10 14:45:59,763 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-10 14:45:59,763 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-10 14:45:59,763 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-10 14:45:59,764 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-10 14:45:59,764 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-10 14:45:59,764 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-10 14:45:59,764 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-10 14:45:59,764 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-10 14:45:59,764 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-10 14:45:59,764 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-10 14:45:59,765 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-06-10 14:45:59,765 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-06-10 14:45:59,765 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-06-10 14:45:59,765 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-10 14:45:59,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 14:45:59,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 14:45:59,769 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-06-10 14:45:59,769 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-06-10 14:45:59,769 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-06-10 14:45:59,770 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-10 14:45:59,771 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-10 14:45:59,772 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-10 14:45:59,772 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-06-10 14:45:59,772 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-06-10 14:45:59,772 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-06-10 14:45:59,775 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-06-10 14:45:59,776 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-06-10 14:45:59,776 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-06-10 14:45:59,776 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-06-10 14:45:59,776 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-06-10 14:45:59,776 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-06-10 14:45:59,776 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-06-10 14:45:59,776 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-06-10 14:45:59,776 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-06-10 14:45:59,777 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-06-10 14:45:59,777 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-06-10 14:45:59,777 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-06-10 14:45:59,777 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-06-10 14:45:59,777 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-06-10 14:45:59,777 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-06-10 14:45:59,778 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 14:45:59,982 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 14:45:59,983 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-10 14:45:59,984 INFO L202 PluginConnector]: Adding new model example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:45:59 BoogieIcfgContainer [2021-06-10 14:45:59,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 14:45:59,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 14:45:59,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 14:45:59,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 14:45:59,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:45:59" (1/2) ... [2021-06-10 14:45:59,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdf88b6 and model type example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 02:45:59, skipping insertion in model container [2021-06-10 14:45:59,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:45:59" (2/2) ... [2021-06-10 14:46:00,001 INFO L111 eAbstractionObserver]: Analyzing ICFG example_16.bpl [2021-06-10 14:46:00,005 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 14:46:00,009 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 14:46:00,010 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 14:46:00,282 INFO L149 ThreadInstanceAdder]: Constructed 256 joinOtherThreadTransitions. [2021-06-10 14:46:00,299 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-06-10 14:46:00,317 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 14:46:00,317 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 14:46:00,317 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 14:46:00,317 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 14:46:00,317 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 14:46:00,318 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 14:46:00,318 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 14:46:00,318 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 14:46:00,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 323 transitions, 1494 flow [2021-06-10 14:46:43,159 INFO L129 PetriNetUnfolder]: 458753/524339 cut-off events. [2021-06-10 14:46:43,159 INFO L130 PetriNetUnfolder]: For 524288/524288 co-relation queries the response was YES. [2021-06-10 14:46:47,124 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. [2021-06-10 14:46:47,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 323 transitions, 1494 flow [2021-06-10 14:46:50,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 305 transitions, 1426 flow [2021-06-10 14:47:38,693 INFO L129 PetriNetUnfolder]: 458753/524336 cut-off events. [2021-06-10 14:47:38,694 INFO L130 PetriNetUnfolder]: For 524288/524288 co-relation queries the response was YES. [2021-06-10 14:47:38,694 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:47:38,695 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:47:38,695 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]=== [2021-06-10 14:47:38,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:47:38,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1488682997, now seen corresponding path program 1 times [2021-06-10 14:47:38,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:47:38,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706057030] [2021-06-10 14:47:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:47:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:47:38,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:47:38,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:47:38,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:47:38,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:47:38,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:47:38,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:47:38,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:47:38,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706057030] [2021-06-10 14:47:38,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:47:38,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:47:38,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703301253] [2021-06-10 14:47:38,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:47:38,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:47:38,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:47:38,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:47:38,866 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-06-10 14:47:38,871 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) [2021-06-10 14:47:38,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:47:38,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-06-10 14:47:38,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:48:01,357 INFO L129 PetriNetUnfolder]: 235058/272818 cut-off events. [2021-06-10 14:48:01,357 INFO L130 PetriNetUnfolder]: For 366130/366130 co-relation queries the response was YES. [2021-06-10 14:48:03,551 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. [2021-06-10 14:48:05,405 INFO L132 encePairwiseOnDemand]: 312/323 looper letters, 6 selfloop transitions, 1 changer transitions 0/295 dead transitions. [2021-06-10 14:48:05,405 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 295 transitions, 1390 flow [2021-06-10 14:48:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:48:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:48:05,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-06-10 14:48:05,419 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-06-10 14:48:05,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-06-10 14:48:05,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-06-10 14:48:05,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:48:05,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-06-10 14:48:05,429 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) [2021-06-10 14:48:05,437 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) [2021-06-10 14:48:05,438 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) [2021-06-10 14:48:05,440 INFO L185 Difference]: Start difference. First operand has 114 places, 305 transitions, 1426 flow. Second operand 3 states and 935 transitions. [2021-06-10 14:48:05,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 295 transitions, 1390 flow [2021-06-10 14:48:22,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 295 transitions, 866 flow, removed 0 selfloop flow, removed 32 redundant places. [2021-06-10 14:48:22,409 INFO L241 Difference]: Finished difference. Result has 84 places, 295 transitions, 854 flow [2021-06-10 14:48:22,411 INFO L326 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} [2021-06-10 14:48:22,412 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -30 predicate places. [2021-06-10 14:48:22,412 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 295 transitions, 854 flow [2021-06-10 14:48:22,412 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) [2021-06-10 14:48:22,413 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:48:22,413 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:48:22,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 14:48:22,413 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]=== [2021-06-10 14:48:22,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:48:22,414 INFO L82 PathProgramCache]: Analyzing trace with hash 2047528087, now seen corresponding path program 1 times [2021-06-10 14:48:22,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:48:22,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580433885] [2021-06-10 14:48:22,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:48:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:48:22,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:22,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:22,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:22,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:48:22,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:22,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:48:22,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580433885] [2021-06-10 14:48:22,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:48:22,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:48:22,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52432544] [2021-06-10 14:48:22,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:48:22,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:48:22,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:48:22,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:48:22,460 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-06-10 14:48:22,461 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) [2021-06-10 14:48:22,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:48:22,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-06-10 14:48:22,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:48:30,118 INFO L129 PetriNetUnfolder]: 135672/160521 cut-off events. [2021-06-10 14:48:30,118 INFO L130 PetriNetUnfolder]: For 17855/17855 co-relation queries the response was YES. [2021-06-10 14:48:31,036 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. [2021-06-10 14:48:31,853 INFO L132 encePairwiseOnDemand]: 313/323 looper letters, 7 selfloop transitions, 1 changer transitions 0/286 dead transitions. [2021-06-10 14:48:31,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 286 transitions, 843 flow [2021-06-10 14:48:31,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:48:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:48:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-06-10 14:48:31,875 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-06-10 14:48:31,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-06-10 14:48:31,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-06-10 14:48:31,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:48:31,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-06-10 14:48:31,879 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) [2021-06-10 14:48:31,881 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) [2021-06-10 14:48:31,881 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) [2021-06-10 14:48:31,882 INFO L185 Difference]: Start difference. First operand has 84 places, 295 transitions, 854 flow. Second operand 3 states and 935 transitions. [2021-06-10 14:48:31,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 286 transitions, 843 flow [2021-06-10 14:48:32,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 286 transitions, 842 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:48:32,010 INFO L241 Difference]: Finished difference. Result has 85 places, 286 transitions, 828 flow [2021-06-10 14:48:32,010 INFO L326 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} [2021-06-10 14:48:32,011 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -29 predicate places. [2021-06-10 14:48:32,011 INFO L480 AbstractCegarLoop]: Abstraction has has 85 places, 286 transitions, 828 flow [2021-06-10 14:48:32,012 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) [2021-06-10 14:48:32,012 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:48:32,012 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:48:32,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 14:48:32,012 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]=== [2021-06-10 14:48:32,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:48:32,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1706813583, now seen corresponding path program 1 times [2021-06-10 14:48:32,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:48:32,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077095406] [2021-06-10 14:48:32,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:48:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:48:32,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:32,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:32,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:32,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:48:32,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:32,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:32,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:48:32,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077095406] [2021-06-10 14:48:32,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:48:32,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:48:32,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916533548] [2021-06-10 14:48:32,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:48:32,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:48:32,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:48:32,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:48:32,128 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-06-10 14:48:32,129 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) [2021-06-10 14:48:32,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:48:32,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-06-10 14:48:32,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:48:39,684 INFO L129 PetriNetUnfolder]: 125350/149106 cut-off events. [2021-06-10 14:48:39,684 INFO L130 PetriNetUnfolder]: For 10756/10756 co-relation queries the response was YES. [2021-06-10 14:48:40,348 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. [2021-06-10 14:48:41,147 INFO L132 encePairwiseOnDemand]: 317/323 looper letters, 11 selfloop transitions, 1 changer transitions 0/281 dead transitions. [2021-06-10 14:48:41,147 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 281 transitions, 837 flow [2021-06-10 14:48:41,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:48:41,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:48:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-06-10 14:48:41,150 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-06-10 14:48:41,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-06-10 14:48:41,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-06-10 14:48:41,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:48:41,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-06-10 14:48:41,152 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) [2021-06-10 14:48:41,154 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) [2021-06-10 14:48:41,155 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) [2021-06-10 14:48:41,155 INFO L185 Difference]: Start difference. First operand has 85 places, 286 transitions, 828 flow. Second operand 3 states and 935 transitions. [2021-06-10 14:48:41,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 281 transitions, 837 flow [2021-06-10 14:48:41,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 281 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:48:41,196 INFO L241 Difference]: Finished difference. Result has 86 places, 281 transitions, 814 flow [2021-06-10 14:48:41,196 INFO L326 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} [2021-06-10 14:48:41,196 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -28 predicate places. [2021-06-10 14:48:41,196 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 281 transitions, 814 flow [2021-06-10 14:48:41,197 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) [2021-06-10 14:48:41,197 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:48:41,197 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:48:41,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 14:48:41,197 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]=== [2021-06-10 14:48:41,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:48:41,198 INFO L82 PathProgramCache]: Analyzing trace with hash 767172921, now seen corresponding path program 1 times [2021-06-10 14:48:41,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:48:41,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680190991] [2021-06-10 14:48:41,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:48:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:48:41,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:41,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:41,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:41,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:48:41,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:41,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:48:41,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680190991] [2021-06-10 14:48:41,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:48:41,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:48:41,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431844943] [2021-06-10 14:48:41,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:48:41,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:48:41,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:48:41,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:48:41,228 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-06-10 14:48:41,229 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) [2021-06-10 14:48:41,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:48:41,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-06-10 14:48:41,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:48:46,496 INFO L129 PetriNetUnfolder]: 96298/116257 cut-off events. [2021-06-10 14:48:46,496 INFO L130 PetriNetUnfolder]: For 9962/9962 co-relation queries the response was YES. [2021-06-10 14:48:47,014 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. [2021-06-10 14:48:47,707 INFO L132 encePairwiseOnDemand]: 315/323 looper letters, 9 selfloop transitions, 1 changer transitions 0/274 dead transitions. [2021-06-10 14:48:47,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 274 transitions, 813 flow [2021-06-10 14:48:47,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:48:47,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:48:47,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-06-10 14:48:47,712 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-06-10 14:48:47,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-06-10 14:48:47,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-06-10 14:48:47,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:48:47,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-06-10 14:48:47,715 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) [2021-06-10 14:48:47,717 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) [2021-06-10 14:48:47,718 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) [2021-06-10 14:48:47,718 INFO L185 Difference]: Start difference. First operand has 86 places, 281 transitions, 814 flow. Second operand 3 states and 935 transitions. [2021-06-10 14:48:47,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 274 transitions, 813 flow [2021-06-10 14:48:47,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 274 transitions, 812 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:48:47,775 INFO L241 Difference]: Finished difference. Result has 87 places, 274 transitions, 794 flow [2021-06-10 14:48:47,775 INFO L326 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} [2021-06-10 14:48:47,775 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -27 predicate places. [2021-06-10 14:48:47,776 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 274 transitions, 794 flow [2021-06-10 14:48:47,776 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) [2021-06-10 14:48:47,776 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:48:47,776 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:48:47,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 14:48:47,777 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]=== [2021-06-10 14:48:47,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:48:47,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1342949559, now seen corresponding path program 1 times [2021-06-10 14:48:47,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:48:47,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133006003] [2021-06-10 14:48:47,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:48:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:48:47,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:47,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:47,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:47,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:48:47,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:47,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:48:47,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133006003] [2021-06-10 14:48:47,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:48:47,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:48:47,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624447521] [2021-06-10 14:48:47,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:48:47,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:48:47,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:48:47,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:48:47,832 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-06-10 14:48:47,833 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) [2021-06-10 14:48:47,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:48:47,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-06-10 14:48:47,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:48:51,662 INFO L129 PetriNetUnfolder]: 70668/86633 cut-off events. [2021-06-10 14:48:51,662 INFO L130 PetriNetUnfolder]: For 7684/7684 co-relation queries the response was YES. [2021-06-10 14:48:52,053 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. [2021-06-10 14:48:52,332 INFO L132 encePairwiseOnDemand]: 314/323 looper letters, 8 selfloop transitions, 1 changer transitions 0/266 dead transitions. [2021-06-10 14:48:52,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 266 transitions, 788 flow [2021-06-10 14:48:52,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:48:52,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:48:52,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-06-10 14:48:52,334 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-06-10 14:48:52,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-06-10 14:48:52,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-06-10 14:48:52,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:48:52,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-06-10 14:48:52,337 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) [2021-06-10 14:48:52,339 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) [2021-06-10 14:48:52,339 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) [2021-06-10 14:48:52,339 INFO L185 Difference]: Start difference. First operand has 87 places, 274 transitions, 794 flow. Second operand 3 states and 935 transitions. [2021-06-10 14:48:52,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 266 transitions, 788 flow [2021-06-10 14:48:52,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 266 transitions, 787 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:48:52,366 INFO L241 Difference]: Finished difference. Result has 88 places, 266 transitions, 771 flow [2021-06-10 14:48:52,366 INFO L326 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} [2021-06-10 14:48:52,366 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -26 predicate places. [2021-06-10 14:48:52,366 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 266 transitions, 771 flow [2021-06-10 14:48:52,367 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) [2021-06-10 14:48:52,367 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:48:52,367 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:48:52,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 14:48:52,367 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]=== [2021-06-10 14:48:52,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:48:52,368 INFO L82 PathProgramCache]: Analyzing trace with hash 856950365, now seen corresponding path program 1 times [2021-06-10 14:48:52,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:48:52,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83780064] [2021-06-10 14:48:52,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:48:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:48:52,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:52,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:52,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:52,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:48:52,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:52,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:52,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:48:52,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83780064] [2021-06-10 14:48:52,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:48:52,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:48:52,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72352291] [2021-06-10 14:48:52,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:48:52,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:48:52,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:48:52,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:48:52,394 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-06-10 14:48:52,395 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) [2021-06-10 14:48:52,395 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:48:52,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-06-10 14:48:52,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:48:53,891 INFO L129 PetriNetUnfolder]: 22146/28352 cut-off events. [2021-06-10 14:48:53,891 INFO L130 PetriNetUnfolder]: For 5582/5582 co-relation queries the response was YES. [2021-06-10 14:48:53,942 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. [2021-06-10 14:48:54,024 INFO L132 encePairwiseOnDemand]: 310/323 looper letters, 4 selfloop transitions, 1 changer transitions 0/254 dead transitions. [2021-06-10 14:48:54,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 254 transitions, 745 flow [2021-06-10 14:48:54,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:48:54,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:48:54,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-06-10 14:48:54,026 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-06-10 14:48:54,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-06-10 14:48:54,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-06-10 14:48:54,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:48:54,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-06-10 14:48:54,028 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) [2021-06-10 14:48:54,030 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) [2021-06-10 14:48:54,030 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) [2021-06-10 14:48:54,031 INFO L185 Difference]: Start difference. First operand has 88 places, 266 transitions, 771 flow. Second operand 3 states and 935 transitions. [2021-06-10 14:48:54,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 254 transitions, 745 flow [2021-06-10 14:48:54,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 254 transitions, 744 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:48:54,036 INFO L241 Difference]: Finished difference. Result has 89 places, 254 transitions, 736 flow [2021-06-10 14:48:54,036 INFO L326 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} [2021-06-10 14:48:54,037 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -25 predicate places. [2021-06-10 14:48:54,037 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 254 transitions, 736 flow [2021-06-10 14:48:54,037 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) [2021-06-10 14:48:54,037 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:48:54,038 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:48:54,038 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 14:48:54,038 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]=== [2021-06-10 14:48:54,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:48:54,038 INFO L82 PathProgramCache]: Analyzing trace with hash 536551777, now seen corresponding path program 1 times [2021-06-10 14:48:54,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:48:54,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90495071] [2021-06-10 14:48:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:48:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:48:54,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:54,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:54,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:54,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:48:54,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:54,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:54,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:48:54,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90495071] [2021-06-10 14:48:54,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:48:54,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:48:54,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421540535] [2021-06-10 14:48:54,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:48:54,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:48:54,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:48:54,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:48:54,065 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-06-10 14:48:54,065 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) [2021-06-10 14:48:54,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:48:54,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-06-10 14:48:54,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:48:54,512 INFO L129 PetriNetUnfolder]: 8415/11362 cut-off events. [2021-06-10 14:48:54,512 INFO L130 PetriNetUnfolder]: For 1959/1959 co-relation queries the response was YES. [2021-06-10 14:48:54,571 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. [2021-06-10 14:48:54,607 INFO L132 encePairwiseOnDemand]: 311/323 looper letters, 5 selfloop transitions, 1 changer transitions 0/243 dead transitions. [2021-06-10 14:48:54,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 243 transitions, 715 flow [2021-06-10 14:48:54,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:48:54,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:48:54,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-06-10 14:48:54,610 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-06-10 14:48:54,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-06-10 14:48:54,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-06-10 14:48:54,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:48:54,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-06-10 14:48:54,612 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) [2021-06-10 14:48:54,613 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) [2021-06-10 14:48:54,614 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) [2021-06-10 14:48:54,614 INFO L185 Difference]: Start difference. First operand has 89 places, 254 transitions, 736 flow. Second operand 3 states and 935 transitions. [2021-06-10 14:48:54,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 243 transitions, 715 flow [2021-06-10 14:48:54,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 243 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:48:54,620 INFO L241 Difference]: Finished difference. Result has 90 places, 243 transitions, 704 flow [2021-06-10 14:48:54,621 INFO L326 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} [2021-06-10 14:48:54,621 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -24 predicate places. [2021-06-10 14:48:54,621 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 243 transitions, 704 flow [2021-06-10 14:48:54,621 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) [2021-06-10 14:48:54,621 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:48:54,621 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:48:54,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 14:48:54,622 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]=== [2021-06-10 14:48:54,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:48:54,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1390160295, now seen corresponding path program 1 times [2021-06-10 14:48:54,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:48:54,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647835273] [2021-06-10 14:48:54,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:48:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:48:54,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:54,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:54,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:54,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:48:54,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:54,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:54,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:48:54,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647835273] [2021-06-10 14:48:54,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:48:54,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:48:54,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824424874] [2021-06-10 14:48:54,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:48:54,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:48:54,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:48:54,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:48:54,646 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-06-10 14:48:54,646 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) [2021-06-10 14:48:54,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:48:54,647 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-06-10 14:48:54,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:48:54,769 INFO L129 PetriNetUnfolder]: 2037/3001 cut-off events. [2021-06-10 14:48:54,769 INFO L130 PetriNetUnfolder]: For 795/795 co-relation queries the response was YES. [2021-06-10 14:48:54,779 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. [2021-06-10 14:48:54,791 INFO L132 encePairwiseOnDemand]: 309/323 looper letters, 3 selfloop transitions, 1 changer transitions 0/230 dead transitions. [2021-06-10 14:48:54,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 230 transitions, 673 flow [2021-06-10 14:48:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:48:54,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:48:54,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-06-10 14:48:54,793 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-06-10 14:48:54,793 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-06-10 14:48:54,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-06-10 14:48:54,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:48:54,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-06-10 14:48:54,795 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) [2021-06-10 14:48:54,797 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) [2021-06-10 14:48:54,797 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) [2021-06-10 14:48:54,797 INFO L185 Difference]: Start difference. First operand has 90 places, 243 transitions, 704 flow. Second operand 3 states and 935 transitions. [2021-06-10 14:48:54,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 230 transitions, 673 flow [2021-06-10 14:48:54,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 230 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:48:54,802 INFO L241 Difference]: Finished difference. Result has 91 places, 230 transitions, 666 flow [2021-06-10 14:48:54,802 INFO L326 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} [2021-06-10 14:48:54,802 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -23 predicate places. [2021-06-10 14:48:54,802 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 230 transitions, 666 flow [2021-06-10 14:48:54,803 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) [2021-06-10 14:48:54,803 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:48:54,803 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:48:54,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 14:48:54,803 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]=== [2021-06-10 14:48:54,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:48:54,803 INFO L82 PathProgramCache]: Analyzing trace with hash 2108326573, now seen corresponding path program 1 times [2021-06-10 14:48:54,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:48:54,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141752801] [2021-06-10 14:48:54,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:48:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:48:54,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:54,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:54,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:54,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:48:54,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:54,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:48:54,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141752801] [2021-06-10 14:48:54,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:48:54,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:48:54,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306808567] [2021-06-10 14:48:54,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:48:54,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:48:54,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:48:54,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:48:54,827 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-06-10 14:48:54,828 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) [2021-06-10 14:48:54,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:48:54,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-06-10 14:48:54,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:48:54,949 INFO L129 PetriNetUnfolder]: 1988/2944 cut-off events. [2021-06-10 14:48:54,949 INFO L130 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2021-06-10 14:48:54,957 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. [2021-06-10 14:48:55,090 INFO L132 encePairwiseOnDemand]: 320/323 looper letters, 14 selfloop transitions, 1 changer transitions 0/228 dead transitions. [2021-06-10 14:48:55,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 228 transitions, 690 flow [2021-06-10 14:48:55,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:48:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:48:55,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-06-10 14:48:55,093 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-06-10 14:48:55,093 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:48:55,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,095 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) [2021-06-10 14:48:55,096 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) [2021-06-10 14:48:55,096 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) [2021-06-10 14:48:55,097 INFO L185 Difference]: Start difference. First operand has 91 places, 230 transitions, 666 flow. Second operand 3 states and 935 transitions. [2021-06-10 14:48:55,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 228 transitions, 690 flow [2021-06-10 14:48:55,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 228 transitions, 689 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:48:55,101 INFO L241 Difference]: Finished difference. Result has 92 places, 228 transitions, 661 flow [2021-06-10 14:48:55,101 INFO L326 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} [2021-06-10 14:48:55,101 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -22 predicate places. [2021-06-10 14:48:55,101 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 228 transitions, 661 flow [2021-06-10 14:48:55,102 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) [2021-06-10 14:48:55,102 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:48:55,102 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:48:55,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 14:48:55,102 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]=== [2021-06-10 14:48:55,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:48:55,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1675031057, now seen corresponding path program 1 times [2021-06-10 14:48:55,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:48:55,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554911420] [2021-06-10 14:48:55,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:48:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:48:55,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:55,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:48:55,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:55,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:48:55,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554911420] [2021-06-10 14:48:55,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:48:55,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:48:55,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94148837] [2021-06-10 14:48:55,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:48:55,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:48:55,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:48:55,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:48:55,125 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-06-10 14:48:55,125 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) [2021-06-10 14:48:55,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:48:55,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-06-10 14:48:55,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:48:55,279 INFO L129 PetriNetUnfolder]: 1707/2600 cut-off events. [2021-06-10 14:48:55,279 INFO L130 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2021-06-10 14:48:55,288 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. [2021-06-10 14:48:55,297 INFO L132 encePairwiseOnDemand]: 318/323 looper letters, 12 selfloop transitions, 1 changer transitions 0/224 dead transitions. [2021-06-10 14:48:55,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 224 transitions, 675 flow [2021-06-10 14:48:55,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:48:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:48:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-06-10 14:48:55,300 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-06-10 14:48:55,300 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:48:55,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,302 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) [2021-06-10 14:48:55,303 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) [2021-06-10 14:48:55,303 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) [2021-06-10 14:48:55,304 INFO L185 Difference]: Start difference. First operand has 92 places, 228 transitions, 661 flow. Second operand 3 states and 935 transitions. [2021-06-10 14:48:55,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 224 transitions, 675 flow [2021-06-10 14:48:55,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 224 transitions, 674 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:48:55,308 INFO L241 Difference]: Finished difference. Result has 93 places, 224 transitions, 650 flow [2021-06-10 14:48:55,309 INFO L326 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} [2021-06-10 14:48:55,309 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -21 predicate places. [2021-06-10 14:48:55,310 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 224 transitions, 650 flow [2021-06-10 14:48:55,310 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) [2021-06-10 14:48:55,310 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:48:55,310 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:48:55,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-10 14:48:55,310 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]=== [2021-06-10 14:48:55,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:48:55,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1290403375, now seen corresponding path program 1 times [2021-06-10 14:48:55,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:48:55,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211805726] [2021-06-10 14:48:55,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:48:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:48:55,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:55,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:48:55,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:48:55,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211805726] [2021-06-10 14:48:55,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:48:55,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:48:55,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206738266] [2021-06-10 14:48:55,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:48:55,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:48:55,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:48:55,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:48:55,353 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-06-10 14:48:55,354 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) [2021-06-10 14:48:55,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:48:55,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-06-10 14:48:55,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:48:55,487 INFO L129 PetriNetUnfolder]: 1702/2594 cut-off events. [2021-06-10 14:48:55,487 INFO L130 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2021-06-10 14:48:55,494 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. [2021-06-10 14:48:55,501 INFO L132 encePairwiseOnDemand]: 321/323 looper letters, 15 selfloop transitions, 1 changer transitions 0/223 dead transitions. [2021-06-10 14:48:55,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 223 transitions, 679 flow [2021-06-10 14:48:55,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:48:55,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:48:55,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-06-10 14:48:55,503 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-06-10 14:48:55,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:48:55,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,505 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) [2021-06-10 14:48:55,506 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) [2021-06-10 14:48:55,506 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) [2021-06-10 14:48:55,506 INFO L185 Difference]: Start difference. First operand has 93 places, 224 transitions, 650 flow. Second operand 3 states and 935 transitions. [2021-06-10 14:48:55,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 223 transitions, 679 flow [2021-06-10 14:48:55,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 223 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:48:55,511 INFO L241 Difference]: Finished difference. Result has 94 places, 223 transitions, 648 flow [2021-06-10 14:48:55,511 INFO L326 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} [2021-06-10 14:48:55,511 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -20 predicate places. [2021-06-10 14:48:55,511 INFO L480 AbstractCegarLoop]: Abstraction has has 94 places, 223 transitions, 648 flow [2021-06-10 14:48:55,512 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) [2021-06-10 14:48:55,512 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:48:55,512 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:48:55,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-10 14:48:55,512 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]=== [2021-06-10 14:48:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:48:55,513 INFO L82 PathProgramCache]: Analyzing trace with hash 445396771, now seen corresponding path program 1 times [2021-06-10 14:48:55,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:48:55,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582668698] [2021-06-10 14:48:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:48:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:48:55,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:55,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:48:55,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:55,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:48:55,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582668698] [2021-06-10 14:48:55,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:48:55,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:48:55,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287142640] [2021-06-10 14:48:55,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:48:55,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:48:55,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:48:55,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:48:55,540 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-06-10 14:48:55,541 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) [2021-06-10 14:48:55,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:48:55,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-06-10 14:48:55,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:48:55,669 INFO L129 PetriNetUnfolder]: 1285/2045 cut-off events. [2021-06-10 14:48:55,669 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-06-10 14:48:55,675 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. [2021-06-10 14:48:55,681 INFO L132 encePairwiseOnDemand]: 316/323 looper letters, 10 selfloop transitions, 1 changer transitions 0/217 dead transitions. [2021-06-10 14:48:55,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 217 transitions, 652 flow [2021-06-10 14:48:55,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:48:55,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:48:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-06-10 14:48:55,683 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-06-10 14:48:55,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:48:55,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,686 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) [2021-06-10 14:48:55,702 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) [2021-06-10 14:48:55,703 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) [2021-06-10 14:48:55,703 INFO L185 Difference]: Start difference. First operand has 94 places, 223 transitions, 648 flow. Second operand 3 states and 935 transitions. [2021-06-10 14:48:55,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 217 transitions, 652 flow [2021-06-10 14:48:55,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 217 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:48:55,707 INFO L241 Difference]: Finished difference. Result has 95 places, 217 transitions, 631 flow [2021-06-10 14:48:55,707 INFO L326 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} [2021-06-10 14:48:55,707 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -19 predicate places. [2021-06-10 14:48:55,707 INFO L480 AbstractCegarLoop]: Abstraction has has 95 places, 217 transitions, 631 flow [2021-06-10 14:48:55,707 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) [2021-06-10 14:48:55,708 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:48:55,708 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:48:55,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-10 14:48:55,708 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]=== [2021-06-10 14:48:55,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:48:55,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1714776709, now seen corresponding path program 1 times [2021-06-10 14:48:55,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:48:55,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867760626] [2021-06-10 14:48:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:48:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:48:55,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:55,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:48:55,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:48:55,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867760626] [2021-06-10 14:48:55,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:48:55,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:48:55,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356748397] [2021-06-10 14:48:55,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:48:55,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:48:55,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:48:55,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:48:55,727 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-06-10 14:48:55,727 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) [2021-06-10 14:48:55,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:48:55,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-06-10 14:48:55,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:48:55,822 INFO L129 PetriNetUnfolder]: 1240/1985 cut-off events. [2021-06-10 14:48:55,822 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2021-06-10 14:48:55,827 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. [2021-06-10 14:48:55,832 INFO L132 encePairwiseOnDemand]: 319/323 looper letters, 13 selfloop transitions, 1 changer transitions 0/214 dead transitions. [2021-06-10 14:48:55,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 214 transitions, 650 flow [2021-06-10 14:48:55,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:48:55,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:48:55,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-06-10 14:48:55,834 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-06-10 14:48:55,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:48:55,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,836 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) [2021-06-10 14:48:55,837 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) [2021-06-10 14:48:55,837 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) [2021-06-10 14:48:55,837 INFO L185 Difference]: Start difference. First operand has 95 places, 217 transitions, 631 flow. Second operand 3 states and 935 transitions. [2021-06-10 14:48:55,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 214 transitions, 650 flow [2021-06-10 14:48:55,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 214 transitions, 649 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:48:55,840 INFO L241 Difference]: Finished difference. Result has 96 places, 214 transitions, 623 flow [2021-06-10 14:48:55,840 INFO L326 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} [2021-06-10 14:48:55,841 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -18 predicate places. [2021-06-10 14:48:55,841 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 214 transitions, 623 flow [2021-06-10 14:48:55,841 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) [2021-06-10 14:48:55,841 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:48:55,841 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:48:55,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-10 14:48:55,841 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]=== [2021-06-10 14:48:55,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:48:55,842 INFO L82 PathProgramCache]: Analyzing trace with hash -785484445, now seen corresponding path program 1 times [2021-06-10 14:48:55,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:48:55,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493420372] [2021-06-10 14:48:55,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:48:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:48:55,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:55,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:48:55,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:48:55,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493420372] [2021-06-10 14:48:55,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:48:55,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:48:55,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864432683] [2021-06-10 14:48:55,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:48:55,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:48:55,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:48:55,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:48:55,863 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-06-10 14:48:55,863 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) [2021-06-10 14:48:55,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:48:55,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-06-10 14:48:55,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:48:55,897 INFO L129 PetriNetUnfolder]: 120/305 cut-off events. [2021-06-10 14:48:55,897 INFO L130 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2021-06-10 14:48:55,898 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. [2021-06-10 14:48:55,899 INFO L132 encePairwiseOnDemand]: 308/323 looper letters, 2 selfloop transitions, 1 changer transitions 0/200 dead transitions. [2021-06-10 14:48:55,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 200 transitions, 587 flow [2021-06-10 14:48:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:48:55,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:48:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-06-10 14:48:55,901 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-06-10 14:48:55,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:48:55,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,903 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) [2021-06-10 14:48:55,904 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) [2021-06-10 14:48:55,904 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) [2021-06-10 14:48:55,905 INFO L185 Difference]: Start difference. First operand has 96 places, 214 transitions, 623 flow. Second operand 3 states and 935 transitions. [2021-06-10 14:48:55,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 200 transitions, 587 flow [2021-06-10 14:48:55,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 200 transitions, 586 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:48:55,908 INFO L241 Difference]: Finished difference. Result has 97 places, 200 transitions, 582 flow [2021-06-10 14:48:55,908 INFO L326 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} [2021-06-10 14:48:55,908 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -17 predicate places. [2021-06-10 14:48:55,908 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 200 transitions, 582 flow [2021-06-10 14:48:55,909 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) [2021-06-10 14:48:55,909 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:48:55,909 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:48:55,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-10 14:48:55,909 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]=== [2021-06-10 14:48:55,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:48:55,910 INFO L82 PathProgramCache]: Analyzing trace with hash 148968093, now seen corresponding path program 1 times [2021-06-10 14:48:55,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:48:55,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076836858] [2021-06-10 14:48:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:48:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:48:55,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:55,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:48:55,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:55,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:48:55,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076836858] [2021-06-10 14:48:55,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:48:55,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:48:55,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529849133] [2021-06-10 14:48:55,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:48:55,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:48:55,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:48:55,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:48:55,926 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 323 [2021-06-10 14:48:55,927 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) [2021-06-10 14:48:55,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:48:55,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 323 [2021-06-10 14:48:55,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:48:55,947 INFO L129 PetriNetUnfolder]: 0/65 cut-off events. [2021-06-10 14:48:55,947 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-06-10 14:48:55,948 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. [2021-06-10 14:48:55,948 INFO L132 encePairwiseOnDemand]: 307/323 looper letters, 1 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2021-06-10 14:48:55,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 65 transitions, 181 flow [2021-06-10 14:48:55,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:48:55,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:48:55,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-06-10 14:48:55,950 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9649122807017544 [2021-06-10 14:48:55,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:48:55,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-06-10 14:48:55,952 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) [2021-06-10 14:48:55,953 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) [2021-06-10 14:48:55,953 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) [2021-06-10 14:48:55,953 INFO L185 Difference]: Start difference. First operand has 97 places, 200 transitions, 582 flow. Second operand 3 states and 935 transitions. [2021-06-10 14:48:55,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 65 transitions, 181 flow [2021-06-10 14:48:55,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 65 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:48:55,955 INFO L241 Difference]: Finished difference. Result has 98 places, 65 transitions, 178 flow [2021-06-10 14:48:55,955 INFO L326 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} [2021-06-10 14:48:55,955 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -16 predicate places. [2021-06-10 14:48:55,955 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 65 transitions, 178 flow [2021-06-10 14:48:55,955 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) [2021-06-10 14:48:55,955 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:48:55,955 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:48:55,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-10 14:48:55,956 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]=== [2021-06-10 14:48:55,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:48:55,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1628173329, now seen corresponding path program 1 times [2021-06-10 14:48:55,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:48:55,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242061625] [2021-06-10 14:48:55,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:48:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:48:56,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:56,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:48:56,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:48:56,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:48:56,101 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:48:56,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:48:56,127 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:48:56,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:48:56,156 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:48:56,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:48:56,194 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:48:56,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:48:56,231 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:48:56,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:48:56,273 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-06-10 14:48:56,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-10 14:48:56,343 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-06-10 14:48:56,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-10 14:48:56,427 INFO L142 QuantifierPusher]: treesize reduction 45, result has 61.2 percent of original size [2021-06-10 14:48:56,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-06-10 14:48:56,531 INFO L142 QuantifierPusher]: treesize reduction 54, result has 59.4 percent of original size [2021-06-10 14:48:56,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-06-10 14:48:56,659 INFO L142 QuantifierPusher]: treesize reduction 63, result has 58.0 percent of original size [2021-06-10 14:48:56,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-06-10 14:48:56,798 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-06-10 14:48:56,808 INFO L142 QuantifierPusher]: treesize reduction 81, result has 54.5 percent of original size [2021-06-10 14:48:56,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-06-10 14:48:56,959 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-06-10 14:48:56,975 INFO L142 QuantifierPusher]: treesize reduction 90, result has 53.8 percent of original size [2021-06-10 14:48:56,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-06-10 14:48:57,140 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-06-10 14:48:57,147 INFO L142 QuantifierPusher]: treesize reduction 99, result has 53.3 percent of original size [2021-06-10 14:48:57,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-06-10 14:48:57,336 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-06-10 14:48:57,348 INFO L142 QuantifierPusher]: treesize reduction 117, result has 50.0 percent of original size [2021-06-10 14:48:57,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-06-10 14:48:57,467 INFO L142 QuantifierPusher]: treesize reduction 135, result has 47.3 percent of original size [2021-06-10 14:48:57,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-06-10 14:48:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:48:57,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242061625] [2021-06-10 14:48:57,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:48:57,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 14:48:57,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415855511] [2021-06-10 14:48:57,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 14:48:57,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:48:57,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 14:48:57,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-06-10 14:48:57,578 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 323 [2021-06-10 14:48:57,581 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) [2021-06-10 14:48:57,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:48:57,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 323 [2021-06-10 14:48:57,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:39,703 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2021-06-10 14:52:40,283 INFO L129 PetriNetUnfolder]: 638979/836377 cut-off events. [2021-06-10 14:52:40,284 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 14:52:47,340 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. [2021-06-10 14:52:51,222 INFO L132 encePairwiseOnDemand]: 306/323 looper letters, 135 selfloop transitions, 15 changer transitions 1/199 dead transitions. [2021-06-10 14:52:51,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 199 transitions, 748 flow [2021-06-10 14:52:51,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-10 14:52:51,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-06-10 14:52:51,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5642 transitions. [2021-06-10 14:52:51,227 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9704162366701067 [2021-06-10 14:52:51,228 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5642 transitions. [2021-06-10 14:52:51,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5642 transitions. [2021-06-10 14:52:51,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:51,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5642 transitions. [2021-06-10 14:52:51,235 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) [2021-06-10 14:52:51,241 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) [2021-06-10 14:52:51,242 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) [2021-06-10 14:52:51,242 INFO L185 Difference]: Start difference. First operand has 98 places, 65 transitions, 178 flow. Second operand 18 states and 5642 transitions. [2021-06-10 14:52:51,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 199 transitions, 748 flow [2021-06-10 14:52:51,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 199 transitions, 747 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:52:51,246 INFO L241 Difference]: Finished difference. Result has 130 places, 79 transitions, 296 flow [2021-06-10 14:52:51,246 INFO L326 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} [2021-06-10 14:52:51,246 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, 16 predicate places. [2021-06-10 14:52:51,247 INFO L480 AbstractCegarLoop]: Abstraction has has 130 places, 79 transitions, 296 flow [2021-06-10 14:52:51,248 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) [2021-06-10 14:52:51,248 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:51,248 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:51,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-10 14:52:51,248 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]=== [2021-06-10 14:52:51,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:51,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1089914735, now seen corresponding path program 2 times [2021-06-10 14:52:51,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:51,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889281813] [2021-06-10 14:52:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:51,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:51,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:51,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:51,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:51,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:51,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:51,388 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:52:51,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:52:51,401 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:51,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:51,419 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:51,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:51,442 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:52:51,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:52:51,472 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-10 14:52:51,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-10 14:52:51,514 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-10 14:52:51,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-10 14:52:51,563 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-10 14:52:51,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-10 14:52:51,613 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-06-10 14:52:51,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-06-10 14:52:51,665 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-06-10 14:52:51,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-06-10 14:52:51,740 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-06-10 14:52:51,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-06-10 14:52:51,810 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-06-10 14:52:51,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-06-10 14:52:51,904 INFO L142 QuantifierPusher]: treesize reduction 108, result has 50.2 percent of original size [2021-06-10 14:52:51,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-06-10 14:52:52,005 INFO L142 QuantifierPusher]: treesize reduction 126, result has 48.6 percent of original size [2021-06-10 14:52:52,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-06-10 14:52:52,110 INFO L142 QuantifierPusher]: treesize reduction 135, result has 47.3 percent of original size [2021-06-10 14:52:52,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-06-10 14:52:52,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:52,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889281813] [2021-06-10 14:52:52,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:52,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 14:52:52,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937562310] [2021-06-10 14:52:52,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 14:52:52,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:52,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 14:52:52,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-06-10 14:52:52,217 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 323 [2021-06-10 14:52:52,220 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) [2021-06-10 14:52:52,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:52,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 323 [2021-06-10 14:52:52,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown