/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_15.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 04:41:01,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 04:41:01,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 04:41:01,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 04:41:01,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 04:41:01,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 04:41:01,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 04:41:01,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 04:41:01,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 04:41:01,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 04:41:01,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 04:41:01,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 04:41:01,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 04:41:01,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 04:41:01,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 04:41:01,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 04:41:01,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 04:41:01,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 04:41:01,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 04:41:01,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 04:41:01,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 04:41:01,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 04:41:01,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 04:41:01,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 04:41:01,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 04:41:01,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 04:41:01,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 04:41:01,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 04:41:01,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 04:41:01,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 04:41:01,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 04:41:01,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 04:41:01,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 04:41:01,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 04:41:01,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 04:41:01,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 04:41:01,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 04:41:01,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 04:41:01,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 04:41:01,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 04:41:01,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 04:41:01,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-03-11 04:41:01,268 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 04:41:01,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 04:41:01,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 04:41:01,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 04:41:01,269 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 04:41:01,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 04:41:01,269 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 04:41:01,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 04:41:01,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 04:41:01,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 04:41:01,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 04:41:01,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 04:41:01,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 04:41:01,270 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 04:41:01,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 04:41:01,270 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 04:41:01,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 04:41:01,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 04:41:01,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 04:41:01,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 04:41:01,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 04:41:01,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 04:41:01,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 04:41:01,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 04:41:01,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 04:41:01,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 04:41:01,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 04:41:01,271 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 04:41:01,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 04:41:01,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 04:41:01,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 04:41:01,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 04:41:01,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 04:41:01,479 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 04:41:01,483 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 04:41:01,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_15.bpl [2021-03-11 04:41:01,484 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_15.bpl' [2021-03-11 04:41:01,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 04:41:01,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 04:41:01,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 04:41:01,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 04:41:01,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 04:41:01,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:41:01" (1/1) ... [2021-03-11 04:41:01,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:41:01" (1/1) ... [2021-03-11 04:41:01,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 04:41:01,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 04:41:01,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 04:41:01,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 04:41:01,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:41:01" (1/1) ... [2021-03-11 04:41:01,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:41:01" (1/1) ... [2021-03-11 04:41:01,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:41:01" (1/1) ... [2021-03-11 04:41:01,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:41:01" (1/1) ... [2021-03-11 04:41:01,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:41:01" (1/1) ... [2021-03-11 04:41:01,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:41:01" (1/1) ... [2021-03-11 04:41:01,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:41:01" (1/1) ... [2021-03-11 04:41:01,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 04:41:01,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 04:41:01,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 04:41:01,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 04:41:01,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:41:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 04:41:01,596 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_14 given in one single declaration [2021-03-11 04:41:01,596 INFO L130 BoogieDeclarations]: Found specification of procedure set_14 [2021-03-11 04:41:01,597 INFO L138 BoogieDeclarations]: Found implementation of procedure set_14 [2021-03-11 04:41:01,597 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-11 04:41:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-11 04:41:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-11 04:41:01,598 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-11 04:41:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-11 04:41:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-11 04:41:01,598 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-11 04:41:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-11 04:41:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-11 04:41:01,599 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-11 04:41:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-11 04:41:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-11 04:41:01,599 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-11 04:41:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-11 04:41:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-11 04:41:01,599 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-03-11 04:41:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-03-11 04:41:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-03-11 04:41:01,600 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 04:41:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 04:41:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 04:41:01,601 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-03-11 04:41:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-03-11 04:41:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-03-11 04:41:01,602 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-11 04:41:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-11 04:41:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-11 04:41:01,602 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-03-11 04:41:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-03-11 04:41:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-03-11 04:41:01,602 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-11 04:41:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-11 04:41:01,603 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-11 04:41:01,603 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-03-11 04:41:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-03-11 04:41:01,606 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-03-11 04:41:01,606 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-11 04:41:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-11 04:41:01,607 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-11 04:41:01,607 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-03-11 04:41:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-03-11 04:41:01,607 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-03-11 04:41:01,607 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-11 04:41:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-11 04:41:01,607 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-11 04:41:01,608 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 04:41:01,749 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 04:41:01,749 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 04:41:01,750 INFO L202 PluginConnector]: Adding new model example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:41:01 BoogieIcfgContainer [2021-03-11 04:41:01,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 04:41:01,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 04:41:01,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 04:41:01,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 04:41:01,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:41:01" (1/2) ... [2021-03-11 04:41:01,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773d549 and model type example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 04:41:01, skipping insertion in model container [2021-03-11 04:41:01,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:41:01" (2/2) ... [2021-03-11 04:41:01,754 INFO L111 eAbstractionObserver]: Analyzing ICFG example_15.bpl [2021-03-11 04:41:01,757 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 04:41:01,759 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 04:41:01,760 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 04:41:02,155 INFO L149 ThreadInstanceAdder]: Constructed 225 joinOtherThreadTransitions. [2021-03-11 04:41:02,168 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-03-11 04:41:02,191 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 04:41:02,191 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 04:41:02,191 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 04:41:02,191 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 04:41:02,191 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 04:41:02,191 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 04:41:02,191 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 04:41:02,191 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 04:41:02,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 288 transitions, 1326 flow [2021-03-11 04:41:16,672 INFO L129 PetriNetUnfolder]: 212993/245808 cut-off events. [2021-03-11 04:41:16,673 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-03-11 04:41:18,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 491614 conditions, 245808 events. 212993/245808 cut-off events. For 245760/245760 co-relation queries the response was YES. Maximal size of possible extension queue 7060. Compared 1008684 event pairs, 0 based on Foata normal form. 0/245807 useless extension candidates. Maximal degree in co-relation 229448. Up to 51480 conditions per place. [2021-03-11 04:41:18,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 288 transitions, 1326 flow [2021-03-11 04:41:19,369 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 271 transitions, 1262 flow [2021-03-11 04:41:33,542 INFO L129 PetriNetUnfolder]: 212993/245805 cut-off events. [2021-03-11 04:41:33,542 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-03-11 04:41:33,542 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:41:33,543 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:41:33,543 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 04:41:33,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:41:33,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1499442976, now seen corresponding path program 1 times [2021-03-11 04:41:33,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:41:33,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670072257] [2021-03-11 04:41:33,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:41:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:41:33,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:33,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:33,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:33,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:41:33,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:33,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:41:33,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670072257] [2021-03-11 04:41:33,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:41:33,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:41:33,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952251170] [2021-03-11 04:41:33,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:41:33,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:41:33,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:41:33,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:41:33,699 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 288 [2021-03-11 04:41:33,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 271 transitions, 1262 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:33,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:41:33,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 288 [2021-03-11 04:41:33,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:41:40,958 INFO L129 PetriNetUnfolder]: 98501/115036 cut-off events. [2021-03-11 04:41:40,958 INFO L130 PetriNetUnfolder]: For 164037/164037 co-relation queries the response was YES. [2021-03-11 04:41:41,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230180 conditions, 115036 events. 98501/115036 cut-off events. For 164037/164037 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 579643 event pairs, 0 based on Foata normal form. 16278/131314 useless extension candidates. Maximal degree in co-relation 229412. Up to 24024 conditions per place. [2021-03-11 04:41:42,153 INFO L132 encePairwiseOnDemand]: 275/288 looper letters, 3 selfloop transitions, 1 changer transitions 0/259 dead transitions. [2021-03-11 04:41:42,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 259 transitions, 1210 flow [2021-03-11 04:41:42,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:41:42,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:41:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 832 transitions. [2021-03-11 04:41:42,163 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9629629629629629 [2021-03-11 04:41:42,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 832 transitions. [2021-03-11 04:41:42,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 832 transitions. [2021-03-11 04:41:42,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:41:42,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 832 transitions. [2021-03-11 04:41:42,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:42,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:42,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:42,175 INFO L185 Difference]: Start difference. First operand has 107 places, 271 transitions, 1262 flow. Second operand 3 states and 832 transitions. [2021-03-11 04:41:42,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 259 transitions, 1210 flow [2021-03-11 04:41:43,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 259 transitions, 754 flow, removed 0 selfloop flow, removed 30 redundant places. [2021-03-11 04:41:43,211 INFO L241 Difference]: Finished difference. Result has 79 places, 259 transitions, 748 flow [2021-03-11 04:41:43,213 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=748, PETRI_PLACES=79, PETRI_TRANSITIONS=259} [2021-03-11 04:41:43,213 INFO L335 CegarLoopForPetriNet]: 107 programPoint places, -28 predicate places. [2021-03-11 04:41:43,213 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 259 transitions, 748 flow [2021-03-11 04:41:43,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:43,214 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:41:43,214 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:41:43,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 04:41:43,214 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 04:41:43,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:41:43,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1480000246, now seen corresponding path program 1 times [2021-03-11 04:41:43,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:41:43,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444287907] [2021-03-11 04:41:43,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:41:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:41:43,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:43,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:43,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:43,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:41:43,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:43,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:43,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:41:43,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444287907] [2021-03-11 04:41:43,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:41:43,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:41:43,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197855228] [2021-03-11 04:41:43,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:41:43,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:41:43,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:41:43,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:41:43,246 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 288 [2021-03-11 04:41:43,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 259 transitions, 748 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:43,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:41:43,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 288 [2021-03-11 04:41:43,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:41:46,194 INFO L129 PetriNetUnfolder]: 65871/78310 cut-off events. [2021-03-11 04:41:46,194 INFO L130 PetriNetUnfolder]: For 8206/8206 co-relation queries the response was YES. [2021-03-11 04:41:46,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82440 conditions, 78310 events. 65871/78310 cut-off events. For 8206/8206 co-relation queries the response was YES. Maximal size of possible extension queue 3067. Compared 385415 event pairs, 0 based on Foata normal form. 4096/82406 useless extension candidates. Maximal degree in co-relation 82409. Up to 18018 conditions per place. [2021-03-11 04:41:46,653 INFO L132 encePairwiseOnDemand]: 280/288 looper letters, 8 selfloop transitions, 1 changer transitions 0/252 dead transitions. [2021-03-11 04:41:46,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 252 transitions, 745 flow [2021-03-11 04:41:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:41:46,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:41:46,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 832 transitions. [2021-03-11 04:41:46,655 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9629629629629629 [2021-03-11 04:41:46,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 832 transitions. [2021-03-11 04:41:46,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 832 transitions. [2021-03-11 04:41:46,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:41:46,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 832 transitions. [2021-03-11 04:41:46,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:46,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:46,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:46,658 INFO L185 Difference]: Start difference. First operand has 79 places, 259 transitions, 748 flow. Second operand 3 states and 832 transitions. [2021-03-11 04:41:46,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 252 transitions, 745 flow [2021-03-11 04:41:46,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 252 transitions, 744 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:41:46,668 INFO L241 Difference]: Finished difference. Result has 80 places, 252 transitions, 728 flow [2021-03-11 04:41:46,668 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=728, PETRI_PLACES=80, PETRI_TRANSITIONS=252} [2021-03-11 04:41:46,669 INFO L335 CegarLoopForPetriNet]: 107 programPoint places, -27 predicate places. [2021-03-11 04:41:46,669 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 252 transitions, 728 flow [2021-03-11 04:41:46,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:46,669 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:41:46,669 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:41:46,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 04:41:46,669 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 04:41:46,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:41:46,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1160209750, now seen corresponding path program 1 times [2021-03-11 04:41:46,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:41:46,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559775445] [2021-03-11 04:41:46,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:41:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:41:46,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:46,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:46,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:46,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:41:46,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:46,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:41:46,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559775445] [2021-03-11 04:41:46,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:41:46,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:41:46,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256452593] [2021-03-11 04:41:46,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:41:46,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:41:46,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:41:46,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:41:46,705 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 288 [2021-03-11 04:41:46,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 252 transitions, 728 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:46,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:41:46,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 288 [2021-03-11 04:41:46,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:41:47,978 INFO L129 PetriNetUnfolder]: 31308/38234 cut-off events. [2021-03-11 04:41:47,978 INFO L130 PetriNetUnfolder]: For 5696/5696 co-relation queries the response was YES. [2021-03-11 04:41:48,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39362 conditions, 38234 events. 31308/38234 cut-off events. For 5696/5696 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 186178 event pairs, 0 based on Foata normal form. 4589/42823 useless extension candidates. Maximal degree in co-relation 39342. Up to 6435 conditions per place. [2021-03-11 04:41:48,350 INFO L132 encePairwiseOnDemand]: 278/288 looper letters, 6 selfloop transitions, 1 changer transitions 0/243 dead transitions. [2021-03-11 04:41:48,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 243 transitions, 715 flow [2021-03-11 04:41:48,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:41:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:41:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 832 transitions. [2021-03-11 04:41:48,355 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9629629629629629 [2021-03-11 04:41:48,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 832 transitions. [2021-03-11 04:41:48,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 832 transitions. [2021-03-11 04:41:48,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:41:48,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 832 transitions. [2021-03-11 04:41:48,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:48,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:48,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:48,359 INFO L185 Difference]: Start difference. First operand has 80 places, 252 transitions, 728 flow. Second operand 3 states and 832 transitions. [2021-03-11 04:41:48,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 243 transitions, 715 flow [2021-03-11 04:41:48,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 243 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:41:48,363 INFO L241 Difference]: Finished difference. Result has 81 places, 243 transitions, 702 flow [2021-03-11 04:41:48,364 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=79, 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=702, PETRI_PLACES=81, PETRI_TRANSITIONS=243} [2021-03-11 04:41:48,364 INFO L335 CegarLoopForPetriNet]: 107 programPoint places, -26 predicate places. [2021-03-11 04:41:48,364 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 243 transitions, 702 flow [2021-03-11 04:41:48,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:48,365 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:41:48,365 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:41:48,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 04:41:48,365 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 04:41:48,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:41:48,366 INFO L82 PathProgramCache]: Analyzing trace with hash -110659140, now seen corresponding path program 1 times [2021-03-11 04:41:48,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:41:48,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916921313] [2021-03-11 04:41:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:41:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:41:48,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:48,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:48,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:48,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:41:48,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:48,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:48,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:41:48,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916921313] [2021-03-11 04:41:48,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:41:48,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:41:48,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867607802] [2021-03-11 04:41:48,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:41:48,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:41:48,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:41:48,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:41:48,402 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 288 [2021-03-11 04:41:48,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 243 transitions, 702 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:48,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:41:48,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 288 [2021-03-11 04:41:48,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:41:49,466 INFO L129 PetriNetUnfolder]: 24290/30192 cut-off events. [2021-03-11 04:41:49,467 INFO L130 PetriNetUnfolder]: For 2923/2923 co-relation queries the response was YES. [2021-03-11 04:41:49,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32113 conditions, 30192 events. 24290/30192 cut-off events. For 2923/2923 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 148546 event pairs, 0 based on Foata normal form. 1024/31216 useless extension candidates. Maximal degree in co-relation 32092. Up to 6435 conditions per place. [2021-03-11 04:41:49,593 INFO L132 encePairwiseOnDemand]: 281/288 looper letters, 9 selfloop transitions, 1 changer transitions 0/237 dead transitions. [2021-03-11 04:41:49,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 237 transitions, 704 flow [2021-03-11 04:41:49,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:41:49,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:41:49,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 832 transitions. [2021-03-11 04:41:49,596 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9629629629629629 [2021-03-11 04:41:49,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 832 transitions. [2021-03-11 04:41:49,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 832 transitions. [2021-03-11 04:41:49,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:41:49,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 832 transitions. [2021-03-11 04:41:49,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:49,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:49,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:49,599 INFO L185 Difference]: Start difference. First operand has 81 places, 243 transitions, 702 flow. Second operand 3 states and 832 transitions. [2021-03-11 04:41:49,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 237 transitions, 704 flow [2021-03-11 04:41:49,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 237 transitions, 703 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:41:49,603 INFO L241 Difference]: Finished difference. Result has 82 places, 237 transitions, 685 flow [2021-03-11 04:41:49,603 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=685, PETRI_PLACES=82, PETRI_TRANSITIONS=237} [2021-03-11 04:41:49,603 INFO L335 CegarLoopForPetriNet]: 107 programPoint places, -25 predicate places. [2021-03-11 04:41:49,603 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 237 transitions, 685 flow [2021-03-11 04:41:49,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:49,604 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:41:49,604 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:41:49,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 04:41:49,604 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 04:41:49,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:41:49,604 INFO L82 PathProgramCache]: Analyzing trace with hash -987965948, now seen corresponding path program 1 times [2021-03-11 04:41:49,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:41:49,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831928060] [2021-03-11 04:41:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:41:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:41:49,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:49,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:49,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:49,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:41:49,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:49,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:41:49,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831928060] [2021-03-11 04:41:49,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:41:49,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:41:49,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423333235] [2021-03-11 04:41:49,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:41:49,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:41:49,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:41:49,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:41:49,626 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 288 [2021-03-11 04:41:49,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 237 transitions, 685 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:49,626 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:41:49,626 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 288 [2021-03-11 04:41:49,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:41:49,958 INFO L129 PetriNetUnfolder]: 8502/11016 cut-off events. [2021-03-11 04:41:49,958 INFO L130 PetriNetUnfolder]: For 2285/2285 co-relation queries the response was YES. [2021-03-11 04:41:49,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11145 conditions, 11016 events. 8502/11016 cut-off events. For 2285/2285 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 50782 event pairs, 0 based on Foata normal form. 2179/13195 useless extension candidates. Maximal degree in co-relation 11127. Up to 1980 conditions per place. [2021-03-11 04:41:50,018 INFO L132 encePairwiseOnDemand]: 276/288 looper letters, 4 selfloop transitions, 1 changer transitions 0/226 dead transitions. [2021-03-11 04:41:50,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 226 transitions, 662 flow [2021-03-11 04:41:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:41:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:41:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 832 transitions. [2021-03-11 04:41:50,020 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9629629629629629 [2021-03-11 04:41:50,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 832 transitions. [2021-03-11 04:41:50,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 832 transitions. [2021-03-11 04:41:50,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:41:50,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 832 transitions. [2021-03-11 04:41:50,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,023 INFO L185 Difference]: Start difference. First operand has 82 places, 237 transitions, 685 flow. Second operand 3 states and 832 transitions. [2021-03-11 04:41:50,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 226 transitions, 662 flow [2021-03-11 04:41:50,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 226 transitions, 661 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:41:50,026 INFO L241 Difference]: Finished difference. Result has 83 places, 226 transitions, 653 flow [2021-03-11 04:41:50,026 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=653, PETRI_PLACES=83, PETRI_TRANSITIONS=226} [2021-03-11 04:41:50,026 INFO L335 CegarLoopForPetriNet]: 107 programPoint places, -24 predicate places. [2021-03-11 04:41:50,026 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 226 transitions, 653 flow [2021-03-11 04:41:50,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,027 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:41:50,027 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:41:50,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 04:41:50,027 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 04:41:50,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:41:50,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1029327066, now seen corresponding path program 1 times [2021-03-11 04:41:50,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:41:50,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127448445] [2021-03-11 04:41:50,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:41:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:41:50,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:50,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:41:50,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:41:50,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127448445] [2021-03-11 04:41:50,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:41:50,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:41:50,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890870618] [2021-03-11 04:41:50,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:41:50,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:41:50,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:41:50,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:41:50,047 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 288 [2021-03-11 04:41:50,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 226 transitions, 653 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:41:50,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 288 [2021-03-11 04:41:50,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:41:50,299 INFO L129 PetriNetUnfolder]: 4371/5963 cut-off events. [2021-03-11 04:41:50,299 INFO L130 PetriNetUnfolder]: For 912/912 co-relation queries the response was YES. [2021-03-11 04:41:50,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6313 conditions, 5963 events. 4371/5963 cut-off events. For 912/912 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 27484 event pairs, 0 based on Foata normal form. 586/6549 useless extension candidates. Maximal degree in co-relation 6295. Up to 880 conditions per place. [2021-03-11 04:41:50,324 INFO L132 encePairwiseOnDemand]: 279/288 looper letters, 7 selfloop transitions, 1 changer transitions 0/218 dead transitions. [2021-03-11 04:41:50,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 218 transitions, 645 flow [2021-03-11 04:41:50,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:41:50,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:41:50,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 832 transitions. [2021-03-11 04:41:50,326 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9629629629629629 [2021-03-11 04:41:50,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 832 transitions. [2021-03-11 04:41:50,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 832 transitions. [2021-03-11 04:41:50,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:41:50,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 832 transitions. [2021-03-11 04:41:50,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,329 INFO L185 Difference]: Start difference. First operand has 83 places, 226 transitions, 653 flow. Second operand 3 states and 832 transitions. [2021-03-11 04:41:50,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 218 transitions, 645 flow [2021-03-11 04:41:50,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 218 transitions, 644 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:41:50,332 INFO L241 Difference]: Finished difference. Result has 84 places, 218 transitions, 630 flow [2021-03-11 04:41:50,332 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=630, PETRI_PLACES=84, PETRI_TRANSITIONS=218} [2021-03-11 04:41:50,332 INFO L335 CegarLoopForPetriNet]: 107 programPoint places, -23 predicate places. [2021-03-11 04:41:50,332 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 218 transitions, 630 flow [2021-03-11 04:41:50,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,333 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:41:50,333 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:41:50,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 04:41:50,334 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 04:41:50,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:41:50,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1545259064, now seen corresponding path program 1 times [2021-03-11 04:41:50,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:41:50,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93882076] [2021-03-11 04:41:50,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:41:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:41:50,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:50,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:41:50,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:41:50,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93882076] [2021-03-11 04:41:50,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:41:50,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:41:50,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523805944] [2021-03-11 04:41:50,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:41:50,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:41:50,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:41:50,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:41:50,367 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 288 [2021-03-11 04:41:50,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 218 transitions, 630 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:41:50,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 288 [2021-03-11 04:41:50,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:41:50,428 INFO L129 PetriNetUnfolder]: 1174/1723 cut-off events. [2021-03-11 04:41:50,428 INFO L130 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2021-03-11 04:41:50,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1763 conditions, 1723 events. 1174/1723 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6954 event pairs, 0 based on Foata normal form. 474/2197 useless extension candidates. Maximal degree in co-relation 1745. Up to 280 conditions per place. [2021-03-11 04:41:50,436 INFO L132 encePairwiseOnDemand]: 274/288 looper letters, 2 selfloop transitions, 1 changer transitions 0/205 dead transitions. [2021-03-11 04:41:50,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 205 transitions, 597 flow [2021-03-11 04:41:50,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:41:50,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:41:50,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 832 transitions. [2021-03-11 04:41:50,438 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9629629629629629 [2021-03-11 04:41:50,438 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 832 transitions. [2021-03-11 04:41:50,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 832 transitions. [2021-03-11 04:41:50,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:41:50,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 832 transitions. [2021-03-11 04:41:50,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,441 INFO L185 Difference]: Start difference. First operand has 84 places, 218 transitions, 630 flow. Second operand 3 states and 832 transitions. [2021-03-11 04:41:50,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 205 transitions, 597 flow [2021-03-11 04:41:50,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 205 transitions, 596 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:41:50,444 INFO L241 Difference]: Finished difference. Result has 85 places, 205 transitions, 592 flow [2021-03-11 04:41:50,444 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=592, PETRI_PLACES=85, PETRI_TRANSITIONS=205} [2021-03-11 04:41:50,444 INFO L335 CegarLoopForPetriNet]: 107 programPoint places, -22 predicate places. [2021-03-11 04:41:50,444 INFO L480 AbstractCegarLoop]: Abstraction has has 85 places, 205 transitions, 592 flow [2021-03-11 04:41:50,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,445 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:41:50,445 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:41:50,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 04:41:50,445 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 04:41:50,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:41:50,445 INFO L82 PathProgramCache]: Analyzing trace with hash -700231086, now seen corresponding path program 1 times [2021-03-11 04:41:50,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:41:50,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938174578] [2021-03-11 04:41:50,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:41:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:41:50,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:50,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:41:50,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:41:50,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938174578] [2021-03-11 04:41:50,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:41:50,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:41:50,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76427068] [2021-03-11 04:41:50,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:41:50,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:41:50,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:41:50,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:41:50,462 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 288 [2021-03-11 04:41:50,463 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 205 transitions, 592 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,463 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:41:50,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 288 [2021-03-11 04:41:50,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:41:50,491 INFO L129 PetriNetUnfolder]: 355/570 cut-off events. [2021-03-11 04:41:50,491 INFO L130 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2021-03-11 04:41:50,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 570 events. 355/570 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2171 event pairs, 0 based on Foata normal form. 168/738 useless extension candidates. Maximal degree in co-relation 579. Up to 140 conditions per place. [2021-03-11 04:41:50,494 INFO L132 encePairwiseOnDemand]: 273/288 looper letters, 1 selfloop transitions, 1 changer transitions 0/141 dead transitions. [2021-03-11 04:41:50,494 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 141 transitions, 404 flow [2021-03-11 04:41:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:41:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:41:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 832 transitions. [2021-03-11 04:41:50,496 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9629629629629629 [2021-03-11 04:41:50,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 832 transitions. [2021-03-11 04:41:50,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 832 transitions. [2021-03-11 04:41:50,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:41:50,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 832 transitions. [2021-03-11 04:41:50,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,498 INFO L185 Difference]: Start difference. First operand has 85 places, 205 transitions, 592 flow. Second operand 3 states and 832 transitions. [2021-03-11 04:41:50,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 141 transitions, 404 flow [2021-03-11 04:41:50,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 141 transitions, 403 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:41:50,500 INFO L241 Difference]: Finished difference. Result has 86 places, 141 transitions, 401 flow [2021-03-11 04:41:50,500 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=401, PETRI_PLACES=86, PETRI_TRANSITIONS=141} [2021-03-11 04:41:50,500 INFO L335 CegarLoopForPetriNet]: 107 programPoint places, -21 predicate places. [2021-03-11 04:41:50,500 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 141 transitions, 401 flow [2021-03-11 04:41:50,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,501 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:41:50,501 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:41:50,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 04:41:50,501 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 04:41:50,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:41:50,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1838943260, now seen corresponding path program 1 times [2021-03-11 04:41:50,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:41:50,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278659850] [2021-03-11 04:41:50,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:41:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:41:50,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:50,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:41:50,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:41:50,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278659850] [2021-03-11 04:41:50,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:41:50,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:41:50,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969011585] [2021-03-11 04:41:50,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:41:50,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:41:50,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:41:50,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:41:50,521 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 288 [2021-03-11 04:41:50,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 141 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:41:50,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 288 [2021-03-11 04:41:50,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:41:50,537 INFO L129 PetriNetUnfolder]: 129/247 cut-off events. [2021-03-11 04:41:50,537 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2021-03-11 04:41:50,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 247 events. 129/247 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 667 event pairs, 0 based on Foata normal form. 67/314 useless extension candidates. Maximal degree in co-relation 257. Up to 60 conditions per place. [2021-03-11 04:41:50,538 INFO L132 encePairwiseOnDemand]: 277/288 looper letters, 1 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2021-03-11 04:41:50,538 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 91 transitions, 255 flow [2021-03-11 04:41:50,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:41:50,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:41:50,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 828 transitions. [2021-03-11 04:41:50,540 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2021-03-11 04:41:50,540 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 828 transitions. [2021-03-11 04:41:50,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 828 transitions. [2021-03-11 04:41:50,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:41:50,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 828 transitions. [2021-03-11 04:41:50,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.0) internal successors, (828), 3 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,542 INFO L185 Difference]: Start difference. First operand has 86 places, 141 transitions, 401 flow. Second operand 3 states and 828 transitions. [2021-03-11 04:41:50,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 91 transitions, 255 flow [2021-03-11 04:41:50,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:41:50,543 INFO L241 Difference]: Finished difference. Result has 87 places, 91 transitions, 252 flow [2021-03-11 04:41:50,544 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=87, PETRI_TRANSITIONS=91} [2021-03-11 04:41:50,544 INFO L335 CegarLoopForPetriNet]: 107 programPoint places, -20 predicate places. [2021-03-11 04:41:50,544 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 252 flow [2021-03-11 04:41:50,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,544 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:41:50,544 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:41:50,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 04:41:50,544 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 04:41:50,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:41:50,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1696785652, now seen corresponding path program 1 times [2021-03-11 04:41:50,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:41:50,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293806714] [2021-03-11 04:41:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:41:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:41:50,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:50,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:41:50,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:41:50,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293806714] [2021-03-11 04:41:50,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:41:50,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:41:50,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417452731] [2021-03-11 04:41:50,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:41:50,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:41:50,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:41:50,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:41:50,570 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 288 [2021-03-11 04:41:50,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:41:50,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 288 [2021-03-11 04:41:50,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:41:50,581 INFO L129 PetriNetUnfolder]: 54/146 cut-off events. [2021-03-11 04:41:50,581 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-11 04:41:50,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 146 events. 54/146 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 333 event pairs, 0 based on Foata normal form. 26/172 useless extension candidates. Maximal degree in co-relation 161. Up to 30 conditions per place. [2021-03-11 04:41:50,582 INFO L132 encePairwiseOnDemand]: 283/288 looper letters, 2 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2021-03-11 04:41:50,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 87 transitions, 246 flow [2021-03-11 04:41:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:41:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:41:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 823 transitions. [2021-03-11 04:41:50,583 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9525462962962963 [2021-03-11 04:41:50,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 823 transitions. [2021-03-11 04:41:50,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 823 transitions. [2021-03-11 04:41:50,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:41:50,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 823 transitions. [2021-03-11 04:41:50,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,585 INFO L185 Difference]: Start difference. First operand has 87 places, 91 transitions, 252 flow. Second operand 3 states and 823 transitions. [2021-03-11 04:41:50,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 87 transitions, 246 flow [2021-03-11 04:41:50,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 87 transitions, 245 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:41:50,587 INFO L241 Difference]: Finished difference. Result has 88 places, 87 transitions, 241 flow [2021-03-11 04:41:50,587 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2021-03-11 04:41:50,587 INFO L335 CegarLoopForPetriNet]: 107 programPoint places, -19 predicate places. [2021-03-11 04:41:50,587 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 241 flow [2021-03-11 04:41:50,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:50,587 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:41:50,587 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:41:50,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 04:41:50,587 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 04:41:50,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:41:50,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1374180046, now seen corresponding path program 1 times [2021-03-11 04:41:50,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:41:50,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825374723] [2021-03-11 04:41:50,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:41:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:41:50,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:41:50,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:41:50,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:41:50,750 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:41:50,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:41:50,767 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:41:50,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:41:50,792 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:41:50,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:41:50,819 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:41:50,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:41:50,854 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-11 04:41:50,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 04:41:50,944 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-11 04:41:50,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 04:41:51,007 INFO L142 QuantifierPusher]: treesize reduction 54, result has 55.4 percent of original size [2021-03-11 04:41:51,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-11 04:41:51,064 INFO L142 QuantifierPusher]: treesize reduction 54, result has 57.5 percent of original size [2021-03-11 04:41:51,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-11 04:41:51,166 INFO L142 QuantifierPusher]: treesize reduction 63, result has 56.3 percent of original size [2021-03-11 04:41:51,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-11 04:41:51,269 INFO L142 QuantifierPusher]: treesize reduction 72, result has 55.3 percent of original size [2021-03-11 04:41:51,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-03-11 04:41:51,365 INFO L142 QuantifierPusher]: treesize reduction 90, result has 52.4 percent of original size [2021-03-11 04:41:51,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-03-11 04:41:51,457 INFO L142 QuantifierPusher]: treesize reduction 99, result has 51.9 percent of original size [2021-03-11 04:41:51,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-03-11 04:41:51,584 INFO L142 QuantifierPusher]: treesize reduction 117, result has 48.7 percent of original size [2021-03-11 04:41:51,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-03-11 04:41:51,680 INFO L142 QuantifierPusher]: treesize reduction 126, result has 47.3 percent of original size [2021-03-11 04:41:51,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 04:41:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:41:51,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825374723] [2021-03-11 04:41:51,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:41:51,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 04:41:51,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744965734] [2021-03-11 04:41:51,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 04:41:51,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:41:51,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 04:41:51,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-03-11 04:41:51,757 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 288 [2021-03-11 04:41:51,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 241 flow. Second operand has 17 states, 17 states have (on average 271.94117647058823) internal successors, (4623), 17 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:41:51,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:41:51,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 288 [2021-03-11 04:41:51,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:42:26,356 INFO L129 PetriNetUnfolder]: 298556/399999 cut-off events. [2021-03-11 04:42:26,356 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 04:42:30,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 744106 conditions, 399999 events. 298556/399999 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24007. Compared 3116169 event pairs, 98305 based on Foata normal form. 1/396192 useless extension candidates. Maximal degree in co-relation 744092. Up to 122881 conditions per place. [2021-03-11 04:42:32,626 INFO L132 encePairwiseOnDemand]: 272/288 looper letters, 119 selfloop transitions, 15 changer transitions 0/205 dead transitions. [2021-03-11 04:42:32,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 205 transitions, 745 flow [2021-03-11 04:42:32,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 04:42:32,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-11 04:42:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4742 transitions. [2021-03-11 04:42:32,636 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9685457516339869 [2021-03-11 04:42:32,636 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4742 transitions. [2021-03-11 04:42:32,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4742 transitions. [2021-03-11 04:42:32,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:42:32,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4742 transitions. [2021-03-11 04:42:32,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 278.94117647058823) internal successors, (4742), 17 states have internal predecessors, (4742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:42:32,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 288.0) internal successors, (5184), 18 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:42:32,647 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 288.0) internal successors, (5184), 18 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:42:32,647 INFO L185 Difference]: Start difference. First operand has 88 places, 87 transitions, 241 flow. Second operand 17 states and 4742 transitions. [2021-03-11 04:42:32,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 205 transitions, 745 flow [2021-03-11 04:42:32,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 205 transitions, 744 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:42:32,650 INFO L241 Difference]: Finished difference. Result has 118 places, 101 transitions, 357 flow [2021-03-11 04:42:32,650 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=357, PETRI_PLACES=118, PETRI_TRANSITIONS=101} [2021-03-11 04:42:32,650 INFO L335 CegarLoopForPetriNet]: 107 programPoint places, 11 predicate places. [2021-03-11 04:42:32,651 INFO L480 AbstractCegarLoop]: Abstraction has has 118 places, 101 transitions, 357 flow [2021-03-11 04:42:32,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 271.94117647058823) internal successors, (4623), 17 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:42:32,652 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:42:32,652 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:42:32,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 04:42:32,652 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 04:42:32,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:42:32,652 INFO L82 PathProgramCache]: Analyzing trace with hash -753282652, now seen corresponding path program 2 times [2021-03-11 04:42:32,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:42:32,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688874410] [2021-03-11 04:42:32,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:42:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:42:32,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:42:32,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:42:32,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:42:32,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:42:32,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:42:32,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 04:42:32,738 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:42:32,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:42:32,748 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:42:32,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:42:32,760 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:42:32,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:42:32,782 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:42:32,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:42:32,805 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-11 04:42:32,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 04:42:32,833 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-11 04:42:32,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 04:42:32,870 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-11 04:42:32,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 04:42:32,914 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-11 04:42:32,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-11 04:42:32,967 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-11 04:42:32,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-11 04:42:33,033 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-11 04:42:33,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-11 04:42:33,099 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-03-11 04:42:33,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-11 04:42:33,172 INFO L142 QuantifierPusher]: treesize reduction 108, result has 50.2 percent of original size [2021-03-11 04:42:33,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-03-11 04:42:33,253 INFO L142 QuantifierPusher]: treesize reduction 126, result has 47.3 percent of original size [2021-03-11 04:42:33,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 04:42:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:42:33,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688874410] [2021-03-11 04:42:33,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:42:33,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 04:42:33,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409454300] [2021-03-11 04:42:33,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 04:42:33,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:42:33,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 04:42:33,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-03-11 04:42:33,330 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 288 [2021-03-11 04:42:33,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 101 transitions, 357 flow. Second operand has 17 states, 17 states have (on average 271.94117647058823) internal successors, (4623), 17 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:42:33,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:42:33,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 288 [2021-03-11 04:42:33,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:44:54,078 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59