/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/weaver-benchmarks/generated/parallel/barrier.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 16:15:57,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 16:15:57,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 16:15:57,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 16:15:57,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 16:15:57,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 16:15:57,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 16:15:57,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 16:15:57,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 16:15:57,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 16:15:57,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 16:15:57,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 16:15:57,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 16:15:57,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 16:15:57,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 16:15:57,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 16:15:57,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 16:15:57,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 16:15:57,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 16:15:57,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 16:15:57,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 16:15:57,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 16:15:57,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 16:15:57,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 16:15:57,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 16:15:57,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 16:15:57,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 16:15:57,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 16:15:57,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 16:15:57,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 16:15:57,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 16:15:57,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 16:15:57,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 16:15:57,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 16:15:57,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 16:15:57,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 16:15:57,542 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-10 16:15:57,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 16:15:57,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 16:15:57,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 16:15:57,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 16:15:57,566 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 16:15:57,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 16:15:57,566 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 16:15:57,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 16:15:57,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 16:15:57,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 16:15:57,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 16:15:57,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 16:15:57,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 16:15:57,567 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 16:15:57,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 16:15:57,567 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 16:15:57,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 16:15:57,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 16:15:57,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 16:15:57,567 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 16:15:57,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 16:15:57,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 16:15:57,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 16:15:57,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 16:15:57,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 16:15:57,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 16:15:57,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 16:15:57,568 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 16:15:57,568 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 16:15:57,568 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 16:15:57,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 16:15:57,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 16:15:57,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 16:15:57,842 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-10 16:15:57,842 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-10 16:15:57,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2021-06-10 16:15:57,843 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2021-06-10 16:15:58,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 16:15:58,150 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-10 16:15:58,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 16:15:58,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 16:15:58,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 16:15:58,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:15:58" (1/1) ... [2021-06-10 16:15:58,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:15:58" (1/1) ... [2021-06-10 16:15:58,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 16:15:58,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 16:15:58,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 16:15:58,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 16:15:58,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:15:58" (1/1) ... [2021-06-10 16:15:58,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:15:58" (1/1) ... [2021-06-10 16:15:58,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:15:58" (1/1) ... [2021-06-10 16:15:58,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:15:58" (1/1) ... [2021-06-10 16:15:58,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:15:58" (1/1) ... [2021-06-10 16:15:58,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:15:58" (1/1) ... [2021-06-10 16:15:58,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:15:58" (1/1) ... [2021-06-10 16:15:58,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 16:15:58,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 16:15:58,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 16:15:58,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 16:15:58,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:15:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 16:15:58,243 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-10 16:15:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-10 16:15:58,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-10 16:15:58,245 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-10 16:15:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-10 16:15:58,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-10 16:15:58,245 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-10 16:15:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 16:15:58,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 16:15:58,245 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-10 16:15:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-10 16:15:58,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-10 16:15:58,245 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-10 16:15:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-10 16:15:58,246 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-10 16:15:58,246 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-10 16:15:58,246 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-10 16:15:58,246 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-10 16:15:58,246 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-06-10 16:15:58,247 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-06-10 16:15:58,247 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-06-10 16:15:58,248 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 16:15:58,423 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 16:15:58,423 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-10 16:15:58,424 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 04:15:58 BoogieIcfgContainer [2021-06-10 16:15:58,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 16:15:58,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 16:15:58,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 16:15:58,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 16:15:58,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:15:58" (1/2) ... [2021-06-10 16:15:58,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e9823f and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 04:15:58, skipping insertion in model container [2021-06-10 16:15:58,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 04:15:58" (2/2) ... [2021-06-10 16:15:58,429 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2021-06-10 16:15:58,433 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 16:15:58,435 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 16:15:58,436 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 16:15:58,560 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-06-10 16:15:58,572 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-06-10 16:15:58,585 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 16:15:58,586 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 16:15:58,586 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 16:15:58,586 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 16:15:58,586 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 16:15:58,586 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 16:15:58,586 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 16:15:58,586 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 16:15:58,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 65 transitions, 202 flow [2021-06-10 16:15:58,621 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-06-10 16:15:58,621 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-10 16:15:58,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 53 events. 4/53 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-06-10 16:15:58,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 65 transitions, 202 flow [2021-06-10 16:15:58,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 51 transitions, 150 flow [2021-06-10 16:15:58,651 INFO L129 PetriNetUnfolder]: 4/50 cut-off events. [2021-06-10 16:15:58,652 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-10 16:15:58,652 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:15:58,652 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:15:58,653 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:15:58,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:15:58,656 INFO L82 PathProgramCache]: Analyzing trace with hash -925790636, now seen corresponding path program 1 times [2021-06-10 16:15:58,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:15:58,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451560429] [2021-06-10 16:15:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:15:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:15:58,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:58,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:15:58,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:58,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-10 16:15:58,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:58,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:15:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:15:58,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451560429] [2021-06-10 16:15:58,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:15:58,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 16:15:58,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034015142] [2021-06-10 16:15:58,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 16:15:58,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:15:58,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 16:15:58,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 16:15:58,812 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 69 [2021-06-10 16:15:58,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:58,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:15:58,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 69 [2021-06-10 16:15:58,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:15:58,860 INFO L129 PetriNetUnfolder]: 6/58 cut-off events. [2021-06-10 16:15:58,860 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-06-10 16:15:58,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 58 events. 6/58 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 1 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 78. Up to 6 conditions per place. [2021-06-10 16:15:58,866 INFO L132 encePairwiseOnDemand]: 66/69 looper letters, 2 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2021-06-10 16:15:58,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 51 transitions, 158 flow [2021-06-10 16:15:58,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 16:15:58,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 16:15:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2021-06-10 16:15:58,877 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9516908212560387 [2021-06-10 16:15:58,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2021-06-10 16:15:58,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2021-06-10 16:15:58,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:15:58,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2021-06-10 16:15:58,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:58,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:58,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:58,892 INFO L185 Difference]: Start difference. First operand has 66 places, 51 transitions, 150 flow. Second operand 3 states and 197 transitions. [2021-06-10 16:15:58,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 51 transitions, 158 flow [2021-06-10 16:15:58,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 51 transitions, 126 flow, removed 0 selfloop flow, removed 12 redundant places. [2021-06-10 16:15:58,899 INFO L241 Difference]: Finished difference. Result has 57 places, 51 transitions, 126 flow [2021-06-10 16:15:58,901 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2021-06-10 16:15:58,901 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2021-06-10 16:15:58,901 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 126 flow [2021-06-10 16:15:58,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:58,902 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:15:58,902 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:15:58,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 16:15:58,902 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:15:58,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:15:58,904 INFO L82 PathProgramCache]: Analyzing trace with hash -566835351, now seen corresponding path program 1 times [2021-06-10 16:15:58,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:15:58,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044680389] [2021-06-10 16:15:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:15:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:15:58,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:58,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:15:58,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:58,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-10 16:15:58,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:58,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:15:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:15:58,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044680389] [2021-06-10 16:15:58,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:15:58,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 16:15:58,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309696195] [2021-06-10 16:15:58,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 16:15:58,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:15:58,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 16:15:58,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 16:15:58,952 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 69 [2021-06-10 16:15:58,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:58,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:15:58,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 69 [2021-06-10 16:15:58,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:15:58,974 INFO L129 PetriNetUnfolder]: 6/58 cut-off events. [2021-06-10 16:15:58,974 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-10 16:15:58,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 58 events. 6/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 1 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 65. Up to 6 conditions per place. [2021-06-10 16:15:58,976 INFO L132 encePairwiseOnDemand]: 66/69 looper letters, 2 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2021-06-10 16:15:58,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 134 flow [2021-06-10 16:15:58,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 16:15:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 16:15:58,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2021-06-10 16:15:58,981 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9516908212560387 [2021-06-10 16:15:58,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2021-06-10 16:15:58,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2021-06-10 16:15:58,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:15:58,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2021-06-10 16:15:58,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:58,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:58,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:58,987 INFO L185 Difference]: Start difference. First operand has 57 places, 51 transitions, 126 flow. Second operand 3 states and 197 transitions. [2021-06-10 16:15:58,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 134 flow [2021-06-10 16:15:58,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 16:15:58,994 INFO L241 Difference]: Finished difference. Result has 58 places, 51 transitions, 130 flow [2021-06-10 16:15:58,994 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2021-06-10 16:15:58,994 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, -8 predicate places. [2021-06-10 16:15:58,994 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 130 flow [2021-06-10 16:15:58,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:58,995 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:15:58,995 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:15:58,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 16:15:58,995 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:15:58,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:15:58,997 INFO L82 PathProgramCache]: Analyzing trace with hash 297539339, now seen corresponding path program 1 times [2021-06-10 16:15:58,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:15:58,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670296979] [2021-06-10 16:15:58,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:15:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:15:59,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:15:59,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-10 16:15:59,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:15:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:15:59,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670296979] [2021-06-10 16:15:59,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:15:59,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 16:15:59,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897539940] [2021-06-10 16:15:59,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 16:15:59,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:15:59,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 16:15:59,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 16:15:59,040 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 69 [2021-06-10 16:15:59,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:59,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:15:59,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 69 [2021-06-10 16:15:59,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:15:59,057 INFO L129 PetriNetUnfolder]: 5/56 cut-off events. [2021-06-10 16:15:59,057 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-10 16:15:59,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 56 events. 5/56 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 1 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 66. Up to 6 conditions per place. [2021-06-10 16:15:59,059 INFO L132 encePairwiseOnDemand]: 66/69 looper letters, 2 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2021-06-10 16:15:59,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 138 flow [2021-06-10 16:15:59,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 16:15:59,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 16:15:59,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2021-06-10 16:15:59,060 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9516908212560387 [2021-06-10 16:15:59,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2021-06-10 16:15:59,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2021-06-10 16:15:59,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:15:59,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2021-06-10 16:15:59,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:59,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:59,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:59,062 INFO L185 Difference]: Start difference. First operand has 58 places, 51 transitions, 130 flow. Second operand 3 states and 197 transitions. [2021-06-10 16:15:59,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 138 flow [2021-06-10 16:15:59,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 131 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 16:15:59,065 INFO L241 Difference]: Finished difference. Result has 58 places, 51 transitions, 131 flow [2021-06-10 16:15:59,065 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2021-06-10 16:15:59,066 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, -8 predicate places. [2021-06-10 16:15:59,066 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 131 flow [2021-06-10 16:15:59,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:59,066 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:15:59,067 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:15:59,067 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 16:15:59,067 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:15:59,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:15:59,068 INFO L82 PathProgramCache]: Analyzing trace with hash -177396129, now seen corresponding path program 2 times [2021-06-10 16:15:59,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:15:59,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093305171] [2021-06-10 16:15:59,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:15:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:15:59,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:15:59,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-10 16:15:59,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:15:59,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:15:59,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093305171] [2021-06-10 16:15:59,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:15:59,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 16:15:59,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372300780] [2021-06-10 16:15:59,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 16:15:59,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:15:59,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 16:15:59,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 16:15:59,089 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 69 [2021-06-10 16:15:59,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:59,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:15:59,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 69 [2021-06-10 16:15:59,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:15:59,105 INFO L129 PetriNetUnfolder]: 6/58 cut-off events. [2021-06-10 16:15:59,105 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-10 16:15:59,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 58 events. 6/58 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 1 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 69. Up to 6 conditions per place. [2021-06-10 16:15:59,107 INFO L132 encePairwiseOnDemand]: 66/69 looper letters, 2 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2021-06-10 16:15:59,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 139 flow [2021-06-10 16:15:59,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 16:15:59,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 16:15:59,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2021-06-10 16:15:59,108 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9516908212560387 [2021-06-10 16:15:59,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2021-06-10 16:15:59,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2021-06-10 16:15:59,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:15:59,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2021-06-10 16:15:59,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:59,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:59,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:59,109 INFO L185 Difference]: Start difference. First operand has 58 places, 51 transitions, 131 flow. Second operand 3 states and 197 transitions. [2021-06-10 16:15:59,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 139 flow [2021-06-10 16:15:59,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 16:15:59,112 INFO L241 Difference]: Finished difference. Result has 58 places, 51 transitions, 132 flow [2021-06-10 16:15:59,112 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2021-06-10 16:15:59,112 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, -8 predicate places. [2021-06-10 16:15:59,112 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 132 flow [2021-06-10 16:15:59,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:59,113 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:15:59,113 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:15:59,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 16:15:59,113 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:15:59,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:15:59,113 INFO L82 PathProgramCache]: Analyzing trace with hash 510422679, now seen corresponding path program 3 times [2021-06-10 16:15:59,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:15:59,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995331177] [2021-06-10 16:15:59,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:15:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:15:59,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:15:59,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:15:59,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:15:59,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:15:59,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:15:59,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:15:59,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:15:59,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:15:59,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:15:59,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:15:59,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:15:59,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:15:59,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:15:59,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:15:59,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:15:59,466 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 16:15:59,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 16:15:59,476 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 16:15:59,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 16:15:59,502 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 16:15:59,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:15:59,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:15:59,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:15:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:15:59,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995331177] [2021-06-10 16:15:59,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:15:59,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-10 16:15:59,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773199767] [2021-06-10 16:15:59,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-10 16:15:59,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:15:59,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-10 16:15:59,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-06-10 16:15:59,513 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-10 16:15:59,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 132 flow. Second operand has 16 states, 16 states have (on average 49.25) internal successors, (788), 16 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:15:59,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:15:59,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-10 16:15:59,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:00,736 INFO L129 PetriNetUnfolder]: 825/1719 cut-off events. [2021-06-10 16:16:00,737 INFO L130 PetriNetUnfolder]: For 222/222 co-relation queries the response was YES. [2021-06-10 16:16:00,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3055 conditions, 1719 events. 825/1719 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10657 event pairs, 326 based on Foata normal form. 1/1587 useless extension candidates. Maximal degree in co-relation 3024. Up to 907 conditions per place. [2021-06-10 16:16:00,747 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 59 selfloop transitions, 74 changer transitions 0/164 dead transitions. [2021-06-10 16:16:00,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 164 transitions, 672 flow [2021-06-10 16:16:00,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-10 16:16:00,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-06-10 16:16:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1430 transitions. [2021-06-10 16:16:00,750 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7675791733762748 [2021-06-10 16:16:00,750 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1430 transitions. [2021-06-10 16:16:00,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1430 transitions. [2021-06-10 16:16:00,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:00,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1430 transitions. [2021-06-10 16:16:00,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 52.96296296296296) internal successors, (1430), 27 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:00,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 69.0) internal successors, (1932), 28 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:00,755 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 69.0) internal successors, (1932), 28 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:00,756 INFO L185 Difference]: Start difference. First operand has 58 places, 51 transitions, 132 flow. Second operand 27 states and 1430 transitions. [2021-06-10 16:16:00,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 164 transitions, 672 flow [2021-06-10 16:16:00,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 164 transitions, 646 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 16:16:00,760 INFO L241 Difference]: Finished difference. Result has 97 places, 124 transitions, 542 flow [2021-06-10 16:16:00,760 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=542, PETRI_PLACES=97, PETRI_TRANSITIONS=124} [2021-06-10 16:16:00,760 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, 31 predicate places. [2021-06-10 16:16:00,760 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 124 transitions, 542 flow [2021-06-10 16:16:00,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 49.25) internal successors, (788), 16 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:00,761 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:00,761 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:16:00,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 16:16:00,761 INFO L428 AbstractCegarLoop]: === Iteration 6 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:16:00,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:00,761 INFO L82 PathProgramCache]: Analyzing trace with hash 959087391, now seen corresponding path program 4 times [2021-06-10 16:16:00,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:00,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123818537] [2021-06-10 16:16:00,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:00,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:00,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:00,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:00,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:00,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:00,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:00,815 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-10 16:16:00,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:00,822 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-06-10 16:16:00,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:00,837 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-06-10 16:16:00,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:00,847 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-06-10 16:16:00,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:00,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:00,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:00,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:00,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:00,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:00,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:00,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:00,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:16:00,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:00,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:16:00,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:00,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:16:00,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:00,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:00,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:00,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:00,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:00,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:01,034 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 16:16:01,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 16:16:01,071 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 16:16:01,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:01,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:01,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:01,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123818537] [2021-06-10 16:16:01,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:01,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-10 16:16:01,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055457286] [2021-06-10 16:16:01,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-10 16:16:01,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:01,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-10 16:16:01,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-10 16:16:01,096 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-10 16:16:01,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 124 transitions, 542 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:01,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:01,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-10 16:16:01,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:07,036 INFO L129 PetriNetUnfolder]: 1561/3227 cut-off events. [2021-06-10 16:16:07,036 INFO L130 PetriNetUnfolder]: For 2713/2743 co-relation queries the response was YES. [2021-06-10 16:16:07,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8403 conditions, 3227 events. 1561/3227 cut-off events. For 2713/2743 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 21847 event pairs, 294 based on Foata normal form. 2/2978 useless extension candidates. Maximal degree in co-relation 8352. Up to 1384 conditions per place. [2021-06-10 16:16:07,064 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 166 selfloop transitions, 559 changer transitions 2/758 dead transitions. [2021-06-10 16:16:07,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 758 transitions, 4788 flow [2021-06-10 16:16:07,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-06-10 16:16:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2021-06-10 16:16:07,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 6941 transitions. [2021-06-10 16:16:07,078 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.767894678614891 [2021-06-10 16:16:07,078 INFO L72 ComplementDD]: Start complementDD. Operand 131 states and 6941 transitions. [2021-06-10 16:16:07,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 131 states and 6941 transitions. [2021-06-10 16:16:07,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:07,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 131 states and 6941 transitions. [2021-06-10 16:16:07,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 132 states, 131 states have (on average 52.98473282442748) internal successors, (6941), 131 states have internal predecessors, (6941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:07,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 132 states, 132 states have (on average 69.0) internal successors, (9108), 132 states have internal predecessors, (9108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:07,114 INFO L81 ComplementDD]: Finished complementDD. Result has 132 states, 132 states have (on average 69.0) internal successors, (9108), 132 states have internal predecessors, (9108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:07,115 INFO L185 Difference]: Start difference. First operand has 97 places, 124 transitions, 542 flow. Second operand 131 states and 6941 transitions. [2021-06-10 16:16:07,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 758 transitions, 4788 flow [2021-06-10 16:16:07,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 758 transitions, 4788 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 16:16:07,135 INFO L241 Difference]: Finished difference. Result has 245 places, 730 transitions, 4686 flow [2021-06-10 16:16:07,135 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=131, PETRI_FLOW=4686, PETRI_PLACES=245, PETRI_TRANSITIONS=730} [2021-06-10 16:16:07,135 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, 179 predicate places. [2021-06-10 16:16:07,136 INFO L480 AbstractCegarLoop]: Abstraction has has 245 places, 730 transitions, 4686 flow [2021-06-10 16:16:07,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:07,136 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:07,136 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:16:07,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 16:16:07,136 INFO L428 AbstractCegarLoop]: === Iteration 7 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:16:07,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:07,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1599941973, now seen corresponding path program 5 times [2021-06-10 16:16:07,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:07,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025344635] [2021-06-10 16:16:07,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:07,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:07,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:07,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:07,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:07,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:07,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:07,244 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-10 16:16:07,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:07,252 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-06-10 16:16:07,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:07,261 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-06-10 16:16:07,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:07,269 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-06-10 16:16:07,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:07,283 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-10 16:16:07,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-10 16:16:07,297 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-10 16:16:07,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-10 16:16:07,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:07,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:07,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:07,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:16:07,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:07,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:16:07,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:07,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:16:07,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:07,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:16:07,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:07,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:07,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:07,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:07,458 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 16:16:07,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 16:16:07,478 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 16:16:07,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:07,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:07,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:07,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025344635] [2021-06-10 16:16:07,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:07,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-10 16:16:07,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285643171] [2021-06-10 16:16:07,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-10 16:16:07,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:07,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-10 16:16:07,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2021-06-10 16:16:07,484 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-10 16:16:07,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 730 transitions, 4686 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:07,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:07,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-10 16:16:07,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:13,806 INFO L129 PetriNetUnfolder]: 3260/6900 cut-off events. [2021-06-10 16:16:13,806 INFO L130 PetriNetUnfolder]: For 11501/11828 co-relation queries the response was YES. [2021-06-10 16:16:13,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22620 conditions, 6900 events. 3260/6900 cut-off events. For 11501/11828 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 54739 event pairs, 248 based on Foata normal form. 63/6400 useless extension candidates. Maximal degree in co-relation 22396. Up to 2602 conditions per place. [2021-06-10 16:16:13,874 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 818 selfloop transitions, 1527 changer transitions 4/2380 dead transitions. [2021-06-10 16:16:13,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 2380 transitions, 20419 flow [2021-06-10 16:16:13,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-06-10 16:16:13,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2021-06-10 16:16:13,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 7171 transitions. [2021-06-10 16:16:13,881 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7698336017176597 [2021-06-10 16:16:13,881 INFO L72 ComplementDD]: Start complementDD. Operand 135 states and 7171 transitions. [2021-06-10 16:16:13,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 7171 transitions. [2021-06-10 16:16:13,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:13,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 135 states and 7171 transitions. [2021-06-10 16:16:13,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 136 states, 135 states have (on average 53.11851851851852) internal successors, (7171), 135 states have internal predecessors, (7171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:13,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 136 states, 136 states have (on average 69.0) internal successors, (9384), 136 states have internal predecessors, (9384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:13,903 INFO L81 ComplementDD]: Finished complementDD. Result has 136 states, 136 states have (on average 69.0) internal successors, (9384), 136 states have internal predecessors, (9384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:13,904 INFO L185 Difference]: Start difference. First operand has 245 places, 730 transitions, 4686 flow. Second operand 135 states and 7171 transitions. [2021-06-10 16:16:13,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 2380 transitions, 20419 flow [2021-06-10 16:16:14,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 2380 transitions, 17015 flow, removed 1641 selfloop flow, removed 4 redundant places. [2021-06-10 16:16:14,091 INFO L241 Difference]: Finished difference. Result has 444 places, 2256 transitions, 17486 flow [2021-06-10 16:16:14,092 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=3405, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=135, PETRI_FLOW=17486, PETRI_PLACES=444, PETRI_TRANSITIONS=2256} [2021-06-10 16:16:14,092 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, 378 predicate places. [2021-06-10 16:16:14,092 INFO L480 AbstractCegarLoop]: Abstraction has has 444 places, 2256 transitions, 17486 flow [2021-06-10 16:16:14,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:14,092 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:14,092 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:16:14,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 16:16:14,093 INFO L428 AbstractCegarLoop]: === Iteration 8 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:16:14,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:14,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1071384681, now seen corresponding path program 6 times [2021-06-10 16:16:14,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:14,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575592802] [2021-06-10 16:16:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:14,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:14,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:14,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:14,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:14,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:14,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:14,161 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-10 16:16:14,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:14,167 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-06-10 16:16:14,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:14,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:14,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:14,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:14,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:14,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:14,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:14,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:14,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:14,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:14,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:14,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:14,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:14,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:14,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:14,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:14,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:14,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:14,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:14,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:14,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:14,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:14,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:14,351 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 16:16:14,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 16:16:14,384 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 16:16:14,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:14,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:14,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:14,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:14,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575592802] [2021-06-10 16:16:14,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:14,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-10 16:16:14,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807049157] [2021-06-10 16:16:14,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-10 16:16:14,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:14,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-10 16:16:14,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-10 16:16:14,391 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-10 16:16:14,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 2256 transitions, 17486 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:14,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:14,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-10 16:16:14,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:16,077 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-06-10 16:16:17,408 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 22 [2021-06-10 16:16:19,916 INFO L129 PetriNetUnfolder]: 3766/7983 cut-off events. [2021-06-10 16:16:19,917 INFO L130 PetriNetUnfolder]: For 19509/20267 co-relation queries the response was YES. [2021-06-10 16:16:19,977 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30366 conditions, 7983 events. 3766/7983 cut-off events. For 19509/20267 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 65314 event pairs, 364 based on Foata normal form. 36/7384 useless extension candidates. Maximal degree in co-relation 30200. Up to 4464 conditions per place. [2021-06-10 16:16:20,014 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 2163 selfloop transitions, 557 changer transitions 0/2751 dead transitions. [2021-06-10 16:16:20,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 2751 transitions, 27323 flow [2021-06-10 16:16:20,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-06-10 16:16:20,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-06-10 16:16:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 4740 transitions. [2021-06-10 16:16:20,019 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7632850241545893 [2021-06-10 16:16:20,019 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 4740 transitions. [2021-06-10 16:16:20,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 4740 transitions. [2021-06-10 16:16:20,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:20,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 4740 transitions. [2021-06-10 16:16:20,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 52.666666666666664) internal successors, (4740), 90 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 69.0) internal successors, (6279), 91 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,032 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 69.0) internal successors, (6279), 91 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,032 INFO L185 Difference]: Start difference. First operand has 444 places, 2256 transitions, 17486 flow. Second operand 90 states and 4740 transitions. [2021-06-10 16:16:20,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 2751 transitions, 27323 flow [2021-06-10 16:16:20,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 2751 transitions, 25428 flow, removed 943 selfloop flow, removed 3 redundant places. [2021-06-10 16:16:20,451 INFO L241 Difference]: Finished difference. Result has 560 places, 2693 transitions, 21408 flow [2021-06-10 16:16:20,453 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=15875, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2026, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=21408, PETRI_PLACES=560, PETRI_TRANSITIONS=2693} [2021-06-10 16:16:20,453 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, 494 predicate places. [2021-06-10 16:16:20,453 INFO L480 AbstractCegarLoop]: Abstraction has has 560 places, 2693 transitions, 21408 flow [2021-06-10 16:16:20,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,454 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:20,454 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:16:20,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 16:16:20,454 INFO L428 AbstractCegarLoop]: === Iteration 9 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:16:20,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:20,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1914708531, now seen corresponding path program 7 times [2021-06-10 16:16:20,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:20,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744558939] [2021-06-10 16:16:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:20,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:20,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:20,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:20,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:20,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:20,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:20,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:20,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:20,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:20,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:20,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:16:20,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:16:20,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:16:20,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:20,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:20,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:20,677 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 16:16:20,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 16:16:20,698 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 16:16:20,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:20,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:20,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744558939] [2021-06-10 16:16:20,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:20,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-10 16:16:20,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297580065] [2021-06-10 16:16:20,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-10 16:16:20,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:20,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-10 16:16:20,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-10 16:16:20,702 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-10 16:16:20,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 2693 transitions, 21408 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:20,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-10 16:16:20,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:21,443 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-06-10 16:16:28,919 INFO L129 PetriNetUnfolder]: 4569/9618 cut-off events. [2021-06-10 16:16:28,920 INFO L130 PetriNetUnfolder]: For 43242/44170 co-relation queries the response was YES. [2021-06-10 16:16:29,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40831 conditions, 9618 events. 4569/9618 cut-off events. For 43242/44170 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 81239 event pairs, 287 based on Foata normal form. 46/8925 useless extension candidates. Maximal degree in co-relation 40637. Up to 5223 conditions per place. [2021-06-10 16:16:29,074 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 2461 selfloop transitions, 986 changer transitions 14/3492 dead transitions. [2021-06-10 16:16:29,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 700 places, 3492 transitions, 37706 flow [2021-06-10 16:16:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2021-06-10 16:16:29,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-06-10 16:16:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 7406 transitions. [2021-06-10 16:16:29,082 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7612293144208038 [2021-06-10 16:16:29,082 INFO L72 ComplementDD]: Start complementDD. Operand 141 states and 7406 transitions. [2021-06-10 16:16:29,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 7406 transitions. [2021-06-10 16:16:29,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:29,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 141 states and 7406 transitions. [2021-06-10 16:16:29,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 142 states, 141 states have (on average 52.52482269503546) internal successors, (7406), 141 states have internal predecessors, (7406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:29,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 142 states, 142 states have (on average 69.0) internal successors, (9798), 142 states have internal predecessors, (9798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:29,102 INFO L81 ComplementDD]: Finished complementDD. Result has 142 states, 142 states have (on average 69.0) internal successors, (9798), 142 states have internal predecessors, (9798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:29,102 INFO L185 Difference]: Start difference. First operand has 560 places, 2693 transitions, 21408 flow. Second operand 141 states and 7406 transitions. [2021-06-10 16:16:29,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 700 places, 3492 transitions, 37706 flow [2021-06-10 16:16:30,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 699 places, 3492 transitions, 36135 flow, removed 784 selfloop flow, removed 1 redundant places. [2021-06-10 16:16:30,177 INFO L241 Difference]: Finished difference. Result has 719 places, 3414 transitions, 31381 flow [2021-06-10 16:16:30,179 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=19971, PETRI_DIFFERENCE_MINUEND_PLACES=559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=141, PETRI_FLOW=31381, PETRI_PLACES=719, PETRI_TRANSITIONS=3414} [2021-06-10 16:16:30,179 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, 653 predicate places. [2021-06-10 16:16:30,179 INFO L480 AbstractCegarLoop]: Abstraction has has 719 places, 3414 transitions, 31381 flow [2021-06-10 16:16:30,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:30,180 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:30,180 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:16:30,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 16:16:30,180 INFO L428 AbstractCegarLoop]: === Iteration 10 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:16:30,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:30,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1039123207, now seen corresponding path program 8 times [2021-06-10 16:16:30,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:30,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024905092] [2021-06-10 16:16:30,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:30,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:30,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:30,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:30,217 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-10 16:16:30,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:30,223 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-06-10 16:16:30,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:30,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:30,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:30,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:30,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:30,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:30,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:16:30,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:16:30,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:16:30,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:16:30,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:30,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:30,396 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 16:16:30,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 16:16:30,433 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 16:16:30,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:30,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:30,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024905092] [2021-06-10 16:16:30,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:30,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-10 16:16:30,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608147139] [2021-06-10 16:16:30,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-10 16:16:30,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:30,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-10 16:16:30,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-10 16:16:30,438 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-10 16:16:30,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 719 places, 3414 transitions, 31381 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:30,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:30,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-10 16:16:30,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:39,127 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2021-06-10 16:16:43,735 INFO L129 PetriNetUnfolder]: 7980/16879 cut-off events. [2021-06-10 16:16:43,735 INFO L130 PetriNetUnfolder]: For 75128/76996 co-relation queries the response was YES. [2021-06-10 16:16:43,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73120 conditions, 16879 events. 7980/16879 cut-off events. For 75128/76996 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 157525 event pairs, 250 based on Foata normal form. 382/15930 useless extension candidates. Maximal degree in co-relation 72834. Up to 7091 conditions per place. [2021-06-10 16:16:44,038 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 3064 selfloop transitions, 4171 changer transitions 20/7286 dead transitions. [2021-06-10 16:16:44,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 890 places, 7286 transitions, 81449 flow [2021-06-10 16:16:44,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2021-06-10 16:16:44,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2021-06-10 16:16:44,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 9173 transitions. [2021-06-10 16:16:44,045 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7684510345983078 [2021-06-10 16:16:44,045 INFO L72 ComplementDD]: Start complementDD. Operand 173 states and 9173 transitions. [2021-06-10 16:16:44,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 173 states and 9173 transitions. [2021-06-10 16:16:44,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:44,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 173 states and 9173 transitions. [2021-06-10 16:16:44,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 174 states, 173 states have (on average 53.02312138728324) internal successors, (9173), 173 states have internal predecessors, (9173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:44,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 174 states, 174 states have (on average 69.0) internal successors, (12006), 174 states have internal predecessors, (12006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:44,066 INFO L81 ComplementDD]: Finished complementDD. Result has 174 states, 174 states have (on average 69.0) internal successors, (12006), 174 states have internal predecessors, (12006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:44,066 INFO L185 Difference]: Start difference. First operand has 719 places, 3414 transitions, 31381 flow. Second operand 173 states and 9173 transitions. [2021-06-10 16:16:44,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 890 places, 7286 transitions, 81449 flow [2021-06-10 16:16:46,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 888 places, 7286 transitions, 75590 flow, removed 2922 selfloop flow, removed 2 redundant places. [2021-06-10 16:16:46,255 INFO L241 Difference]: Finished difference. Result has 982 places, 7039 transitions, 74899 flow [2021-06-10 16:16:46,259 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=26046, PETRI_DIFFERENCE_MINUEND_PLACES=716, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=173, PETRI_FLOW=74899, PETRI_PLACES=982, PETRI_TRANSITIONS=7039} [2021-06-10 16:16:46,259 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, 916 predicate places. [2021-06-10 16:16:46,259 INFO L480 AbstractCegarLoop]: Abstraction has has 982 places, 7039 transitions, 74899 flow [2021-06-10 16:16:46,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:46,260 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:46,260 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:16:46,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-10 16:16:46,260 INFO L428 AbstractCegarLoop]: === Iteration 11 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:16:46,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:46,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1295906601, now seen corresponding path program 9 times [2021-06-10 16:16:46,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:46,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706740975] [2021-06-10 16:16:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:46,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:46,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:46,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:46,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:46,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:46,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:46,317 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-10 16:16:46,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:16:46,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:46,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:46,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:46,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:46,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:46,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:46,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:46,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:46,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:46,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:46,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:46,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:46,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:46,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:46,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:46,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:16:46,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:46,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:16:46,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:46,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:46,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:46,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:46,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:46,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:16:46,513 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 16:16:46,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 16:16:46,536 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 16:16:46,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:16:46,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:46,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:46,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:46,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706740975] [2021-06-10 16:16:46,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:46,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-10 16:16:46,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24302060] [2021-06-10 16:16:46,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-10 16:16:46,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:46,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-10 16:16:46,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-06-10 16:16:46,541 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-10 16:16:46,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 982 places, 7039 transitions, 74899 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:46,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:46,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-10 16:16:46,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:51,116 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 23 [2021-06-10 16:17:07,360 INFO L129 PetriNetUnfolder]: 9249/19386 cut-off events. [2021-06-10 16:17:07,361 INFO L130 PetriNetUnfolder]: For 99827/102853 co-relation queries the response was YES. [2021-06-10 16:17:07,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96385 conditions, 19386 events. 9249/19386 cut-off events. For 99827/102853 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 183449 event pairs, 238 based on Foata normal form. 400/18304 useless extension candidates. Maximal degree in co-relation 95983. Up to 10893 conditions per place. [2021-06-10 16:17:07,911 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 6677 selfloop transitions, 1527 changer transitions 17/8252 dead transitions. [2021-06-10 16:17:07,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1131 places, 8252 transitions, 108661 flow [2021-06-10 16:17:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2021-06-10 16:17:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2021-06-10 16:17:07,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 7965 transitions. [2021-06-10 16:17:07,918 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7695652173913043 [2021-06-10 16:17:07,918 INFO L72 ComplementDD]: Start complementDD. Operand 150 states and 7965 transitions. [2021-06-10 16:17:07,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 7965 transitions. [2021-06-10 16:17:07,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:17:07,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 150 states and 7965 transitions. [2021-06-10 16:17:07,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 151 states, 150 states have (on average 53.1) internal successors, (7965), 150 states have internal predecessors, (7965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:17:07,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 151 states, 151 states have (on average 69.0) internal successors, (10419), 151 states have internal predecessors, (10419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:17:07,936 INFO L81 ComplementDD]: Finished complementDD. Result has 151 states, 151 states have (on average 69.0) internal successors, (10419), 151 states have internal predecessors, (10419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:17:07,936 INFO L185 Difference]: Start difference. First operand has 982 places, 7039 transitions, 74899 flow. Second operand 150 states and 7965 transitions. [2021-06-10 16:17:07,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1131 places, 8252 transitions, 108661 flow [2021-06-10 16:17:12,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1126 places, 8252 transitions, 101107 flow, removed 3636 selfloop flow, removed 5 redundant places. [2021-06-10 16:17:13,061 INFO L241 Difference]: Finished difference. Result has 1156 places, 8152 transitions, 88473 flow [2021-06-10 16:17:13,065 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=67948, PETRI_DIFFERENCE_MINUEND_PLACES=977, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7039, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=565, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=150, PETRI_FLOW=88473, PETRI_PLACES=1156, PETRI_TRANSITIONS=8152} [2021-06-10 16:17:13,065 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, 1090 predicate places. [2021-06-10 16:17:13,065 INFO L480 AbstractCegarLoop]: Abstraction has has 1156 places, 8152 transitions, 88473 flow [2021-06-10 16:17:13,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:17:13,066 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:17:13,066 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:17:13,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-10 16:17:13,066 INFO L428 AbstractCegarLoop]: === Iteration 12 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:17:13,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:17:13,066 INFO L82 PathProgramCache]: Analyzing trace with hash 768714307, now seen corresponding path program 10 times [2021-06-10 16:17:13,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:17:13,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628007012] [2021-06-10 16:17:13,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:17:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:17:13,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:17:13,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:17:13,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:17:13,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:17:13,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:17:13,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:17:13,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:17:13,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:17:13,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:17:13,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:17:13,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:17:13,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:17:13,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:17:13,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:17:13,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:17:13,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:17:13,300 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 16:17:13,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 16:17:13,325 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 16:17:13,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:17:13,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:13,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:17:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:17:13,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628007012] [2021-06-10 16:17:13,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:17:13,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-10 16:17:13,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074049791] [2021-06-10 16:17:13,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-10 16:17:13,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:17:13,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-10 16:17:13,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-10 16:17:13,330 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-10 16:17:13,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1156 places, 8152 transitions, 88473 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:17:13,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:17:13,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-10 16:17:13,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:17:27,301 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-06-10 16:17:41,286 INFO L129 PetriNetUnfolder]: 11431/24022 cut-off events. [2021-06-10 16:17:41,286 INFO L130 PetriNetUnfolder]: For 142275/148588 co-relation queries the response was YES. [2021-06-10 16:17:42,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123488 conditions, 24022 events. 11431/24022 cut-off events. For 142275/148588 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 236225 event pairs, 237 based on Foata normal form. 910/23103 useless extension candidates. Maximal degree in co-relation 123065. Up to 12557 conditions per place. [2021-06-10 16:17:42,446 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 7370 selfloop transitions, 3153 changer transitions 6/10560 dead transitions. [2021-06-10 16:17:42,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1311 places, 10560 transitions, 144957 flow [2021-06-10 16:17:42,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2021-06-10 16:17:42,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2021-06-10 16:17:42,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 8197 transitions. [2021-06-10 16:17:42,452 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7615198810850985 [2021-06-10 16:17:42,452 INFO L72 ComplementDD]: Start complementDD. Operand 156 states and 8197 transitions. [2021-06-10 16:17:42,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 156 states and 8197 transitions. [2021-06-10 16:17:42,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:17:42,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 156 states and 8197 transitions. [2021-06-10 16:17:42,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 157 states, 156 states have (on average 52.544871794871796) internal successors, (8197), 156 states have internal predecessors, (8197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:17:42,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 157 states, 157 states have (on average 69.0) internal successors, (10833), 157 states have internal predecessors, (10833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:17:42,466 INFO L81 ComplementDD]: Finished complementDD. Result has 157 states, 157 states have (on average 69.0) internal successors, (10833), 157 states have internal predecessors, (10833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:17:42,466 INFO L185 Difference]: Start difference. First operand has 1156 places, 8152 transitions, 88473 flow. Second operand 156 states and 8197 transitions. [2021-06-10 16:17:42,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1311 places, 10560 transitions, 144957 flow [2021-06-10 16:17:49,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1311 places, 10560 transitions, 125051 flow, removed 9953 selfloop flow, removed 0 redundant places. [2021-06-10 16:17:49,608 INFO L241 Difference]: Finished difference. Result has 1393 places, 10362 transitions, 113489 flow [2021-06-10 16:17:49,613 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=79889, PETRI_DIFFERENCE_MINUEND_PLACES=1156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=156, PETRI_FLOW=113489, PETRI_PLACES=1393, PETRI_TRANSITIONS=10362} [2021-06-10 16:17:49,613 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, 1327 predicate places. [2021-06-10 16:17:49,613 INFO L480 AbstractCegarLoop]: Abstraction has has 1393 places, 10362 transitions, 113489 flow [2021-06-10 16:17:49,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:17:49,614 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:17:49,614 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:17:49,614 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-10 16:17:49,614 INFO L428 AbstractCegarLoop]: === Iteration 13 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:17:49,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:17:49,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1366906875, now seen corresponding path program 11 times [2021-06-10 16:17:49,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:17:49,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708917803] [2021-06-10 16:17:49,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:17:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:17:49,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:49,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:17:49,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:49,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:17:49,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:49,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:17:49,661 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-10 16:17:49,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:17:49,668 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-06-10 16:17:49,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:17:49,677 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-06-10 16:17:49,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-10 16:17:49,690 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-06-10 16:17:49,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-10 16:17:49,706 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-10 16:17:49,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-10 16:17:49,722 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-10 16:17:49,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-10 16:17:49,739 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-10 16:17:49,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-10 16:17:49,757 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-10 16:17:49,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-10 16:17:49,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:49,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:17:49,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:49,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:17:49,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:49,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:17:49,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:49,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:17:49,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:49,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:17:49,879 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 16:17:49,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 16:17:49,902 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 16:17:49,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:17:49,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:17:49,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:17:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:17:49,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708917803] [2021-06-10 16:17:49,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:17:49,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-10 16:17:49,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100841813] [2021-06-10 16:17:49,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-10 16:17:49,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:17:49,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-10 16:17:49,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-10 16:17:49,906 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-10 16:17:49,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1393 places, 10362 transitions, 113489 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:17:49,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:17:49,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-10 16:17:49,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:18:25,118 INFO L129 PetriNetUnfolder]: 11850/24844 cut-off events. [2021-06-10 16:18:25,118 INFO L130 PetriNetUnfolder]: For 149644/154050 co-relation queries the response was YES. [2021-06-10 16:18:27,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126069 conditions, 24844 events. 11850/24844 cut-off events. For 149644/154050 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 245216 event pairs, 227 based on Foata normal form. 854/23819 useless extension candidates. Maximal degree in co-relation 125665. Up to 15016 conditions per place. [2021-06-10 16:18:27,850 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 9699 selfloop transitions, 1017 changer transitions 0/10747 dead transitions. [2021-06-10 16:18:27,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1456 places, 10747 transitions, 142124 flow [2021-06-10 16:18:27,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-10 16:18:27,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-06-10 16:18:27,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 3422 transitions. [2021-06-10 16:18:27,853 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7749094202898551 [2021-06-10 16:18:27,854 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 3422 transitions. [2021-06-10 16:18:27,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 3422 transitions. [2021-06-10 16:18:27,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:18:27,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 3422 transitions. [2021-06-10 16:18:27,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 53.46875) internal successors, (3422), 64 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:18:27,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 69.0) internal successors, (4485), 65 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:18:27,860 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 69.0) internal successors, (4485), 65 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:18:27,860 INFO L185 Difference]: Start difference. First operand has 1393 places, 10362 transitions, 113489 flow. Second operand 64 states and 3422 transitions. [2021-06-10 16:18:27,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1456 places, 10747 transitions, 142124 flow [2021-06-10 16:18:35,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1453 places, 10747 transitions, 133780 flow, removed 4129 selfloop flow, removed 3 redundant places. [2021-06-10 16:18:35,288 INFO L241 Difference]: Finished difference. Result has 1478 places, 10663 transitions, 113784 flow [2021-06-10 16:18:35,296 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=105410, PETRI_DIFFERENCE_MINUEND_PLACES=1390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=751, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=113784, PETRI_PLACES=1478, PETRI_TRANSITIONS=10663} [2021-06-10 16:18:35,296 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, 1412 predicate places. [2021-06-10 16:18:35,296 INFO L480 AbstractCegarLoop]: Abstraction has has 1478 places, 10663 transitions, 113784 flow [2021-06-10 16:18:35,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:18:35,297 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:18:35,297 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:18:35,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-10 16:18:35,297 INFO L428 AbstractCegarLoop]: === Iteration 14 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:18:35,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:18:35,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1383918993, now seen corresponding path program 12 times [2021-06-10 16:18:35,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:18:35,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634510341] [2021-06-10 16:18:35,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:18:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:18:35,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:18:35,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:18:35,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:18:35,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:18:35,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:18:35,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:18:35,341 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-10 16:18:35,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:18:35,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:18:35,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:18:35,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:18:35,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:18:35,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:18:35,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:18:35,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:18:35,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:18:35,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:18:35,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:18:35,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:18:35,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:18:35,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:18:35,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:18:35,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:18:35,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:18:35,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:18:35,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 16:18:35,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:18:35,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:18:35,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:18:35,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:18:35,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:18:35,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:18:35,533 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 16:18:35,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 16:18:35,559 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 16:18:35,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:18:35,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:18:35,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:18:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:18:35,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634510341] [2021-06-10 16:18:35,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:18:35,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 16:18:35,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546555767] [2021-06-10 16:18:35,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 16:18:35,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:18:35,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 16:18:35,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-10 16:18:35,563 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-10 16:18:35,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1478 places, 10663 transitions, 113784 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:18:35,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:18:35,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-10 16:18:35,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:19:23,430 INFO L129 PetriNetUnfolder]: 15458/32006 cut-off events. [2021-06-10 16:19:23,430 INFO L130 PetriNetUnfolder]: For 208151/214113 co-relation queries the response was YES. [2021-06-10 16:19:27,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162091 conditions, 32006 events. 15458/32006 cut-off events. For 208151/214113 co-relation queries the response was YES. Maximal size of possible extension queue 1505. Compared 325443 event pairs, 162 based on Foata normal form. 1582/31214 useless extension candidates. Maximal degree in co-relation 161649. Up to 16312 conditions per place. [2021-06-10 16:19:27,343 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 9358 selfloop transitions, 5512 changer transitions 19/14920 dead transitions. [2021-06-10 16:19:27,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1579 places, 14920 transitions, 191686 flow [2021-06-10 16:19:27,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-06-10 16:19:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-06-10 16:19:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 5492 transitions. [2021-06-10 16:19:27,347 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.780335322534811 [2021-06-10 16:19:27,347 INFO L72 ComplementDD]: Start complementDD. Operand 102 states and 5492 transitions. [2021-06-10 16:19:27,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 102 states and 5492 transitions. [2021-06-10 16:19:27,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:19:27,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 102 states and 5492 transitions. [2021-06-10 16:19:27,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 103 states, 102 states have (on average 53.84313725490196) internal successors, (5492), 102 states have internal predecessors, (5492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:19:27,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 103 states, 103 states have (on average 69.0) internal successors, (7107), 103 states have internal predecessors, (7107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:19:27,356 INFO L81 ComplementDD]: Finished complementDD. Result has 103 states, 103 states have (on average 69.0) internal successors, (7107), 103 states have internal predecessors, (7107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:19:27,356 INFO L185 Difference]: Start difference. First operand has 1478 places, 10663 transitions, 113784 flow. Second operand 102 states and 5492 transitions. [2021-06-10 16:19:27,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1579 places, 14920 transitions, 191686 flow [2021-06-10 16:19:38,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1578 places, 14920 transitions, 189277 flow, removed 1203 selfloop flow, removed 1 redundant places. [2021-06-10 16:19:38,250 INFO L241 Difference]: Finished difference. Result has 1663 places, 14416 transitions, 176982 flow [2021-06-10 16:19:38,258 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=111381, PETRI_DIFFERENCE_MINUEND_PLACES=1477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2470, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6908, PETRI_DIFFERENCE_SUBTRAHEND_STATES=102, PETRI_FLOW=176982, PETRI_PLACES=1663, PETRI_TRANSITIONS=14416} [2021-06-10 16:19:38,258 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, 1597 predicate places. [2021-06-10 16:19:38,258 INFO L480 AbstractCegarLoop]: Abstraction has has 1663 places, 14416 transitions, 176982 flow [2021-06-10 16:19:38,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:19:38,259 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:19:38,259 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:19:38,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-10 16:19:38,259 INFO L428 AbstractCegarLoop]: === Iteration 15 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:19:38,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:19:38,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1064809903, now seen corresponding path program 13 times [2021-06-10 16:19:38,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:19:38,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768535940] [2021-06-10 16:19:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:19:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:19:38,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:19:38,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:19:38,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:19:38,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:19:38,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:19:38,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:19:38,309 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-10 16:19:38,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:19:38,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:19:38,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:19:38,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:19:38,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:19:38,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:19:38,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:19:38,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:19:38,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:19:38,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:19:38,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:19:38,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:19:38,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:19:38,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:19:38,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:19:38,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:19:38,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:19:38,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:19:38,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:19:38,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:19:38,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:19:38,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:19:38,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:19:38,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:19:38,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:19:38,496 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 16:19:38,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 16:19:38,518 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 16:19:38,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:19:38,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:19:38,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:19:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:19:38,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768535940] [2021-06-10 16:19:38,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:19:38,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 16:19:38,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729850052] [2021-06-10 16:19:38,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 16:19:38,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:19:38,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 16:19:38,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-10 16:19:38,522 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-10 16:19:38,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1663 places, 14416 transitions, 176982 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:19:38,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:19:38,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-10 16:19:38,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:21:05,353 INFO L129 PetriNetUnfolder]: 17765/36581 cut-off events. [2021-06-10 16:21:05,354 INFO L130 PetriNetUnfolder]: For 368960/376850 co-relation queries the response was YES. [2021-06-10 16:21:11,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214566 conditions, 36581 events. 17765/36581 cut-off events. For 368960/376850 co-relation queries the response was YES. Maximal size of possible extension queue 1777. Compared 378680 event pairs, 198 based on Foata normal form. 1841/35769 useless extension candidates. Maximal degree in co-relation 214007. Up to 20050 conditions per place. [2021-06-10 16:21:11,217 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 12559 selfloop transitions, 4469 changer transitions 11/17070 dead transitions. [2021-06-10 16:21:11,217 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1749 places, 17070 transitions, 255726 flow [2021-06-10 16:21:11,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-06-10 16:21:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-06-10 16:21:11,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 4655 transitions. [2021-06-10 16:21:11,223 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7754456105280693 [2021-06-10 16:21:11,223 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 4655 transitions. [2021-06-10 16:21:11,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 4655 transitions. [2021-06-10 16:21:11,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:21:11,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 4655 transitions. [2021-06-10 16:21:11,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 53.50574712643678) internal successors, (4655), 87 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:21:11,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 69.0) internal successors, (6072), 88 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:21:11,231 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 69.0) internal successors, (6072), 88 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:21:11,231 INFO L185 Difference]: Start difference. First operand has 1663 places, 14416 transitions, 176982 flow. Second operand 87 states and 4655 transitions. [2021-06-10 16:21:11,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1749 places, 17070 transitions, 255726 flow [2021-06-10 16:21:32,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1743 places, 17070 transitions, 244192 flow, removed 5607 selfloop flow, removed 6 redundant places. [2021-06-10 16:21:32,844 INFO L241 Difference]: Finished difference. Result has 1797 places, 16613 transitions, 220353 flow [2021-06-10 16:21:32,853 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=170287, PETRI_DIFFERENCE_MINUEND_PLACES=1657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2632, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=220353, PETRI_PLACES=1797, PETRI_TRANSITIONS=16613} [2021-06-10 16:21:32,854 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, 1731 predicate places. [2021-06-10 16:21:32,854 INFO L480 AbstractCegarLoop]: Abstraction has has 1797 places, 16613 transitions, 220353 flow [2021-06-10 16:21:32,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:21:32,854 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:21:32,854 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:21:32,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-10 16:21:32,854 INFO L428 AbstractCegarLoop]: === Iteration 16 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:21:32,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:21:32,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1938384471, now seen corresponding path program 14 times [2021-06-10 16:21:32,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:21:32,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529537620] [2021-06-10 16:21:32,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:21:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:21:32,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:32,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:21:32,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:32,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:21:32,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:32,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:21:32,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:32,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:21:32,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:32,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:21:32,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:32,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:21:32,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:32,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:21:32,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:32,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:21:32,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:32,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:21:32,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:32,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:21:32,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:32,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:21:33,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:33,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:21:33,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:33,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:21:33,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:33,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:21:33,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:33,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:21:33,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:33,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:21:33,112 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 16:21:33,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 16:21:33,135 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-10 16:21:33,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:21:33,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:21:33,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:21:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:21:33,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529537620] [2021-06-10 16:21:33,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:21:33,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-10 16:21:33,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654516353] [2021-06-10 16:21:33,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-10 16:21:33,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:21:33,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-10 16:21:33,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-10 16:21:33,139 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-10 16:21:33,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1797 places, 16613 transitions, 220353 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:21:33,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:21:33,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-10 16:21:33,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:22:18,355 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-06-10 16:23:21,047 INFO L129 PetriNetUnfolder]: 18373/37723 cut-off events. [2021-06-10 16:23:21,048 INFO L130 PetriNetUnfolder]: For 460949/469135 co-relation queries the response was YES. [2021-06-10 16:23:27,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 235476 conditions, 37723 events. 18373/37723 cut-off events. For 460949/469135 co-relation queries the response was YES. Maximal size of possible extension queue 1825. Compared 391546 event pairs, 237 based on Foata normal form. 793/35780 useless extension candidates. Maximal degree in co-relation 234882. Up to 23564 conditions per place. [2021-06-10 16:23:27,601 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 16011 selfloop transitions, 1204 changer transitions 0/17246 dead transitions. [2021-06-10 16:23:27,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1883 places, 17246 transitions, 274148 flow [2021-06-10 16:23:27,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-06-10 16:23:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-06-10 16:23:27,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 4586 transitions. [2021-06-10 16:23:27,604 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7639513576545061 [2021-06-10 16:23:27,604 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 4586 transitions. [2021-06-10 16:23:27,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 4586 transitions. [2021-06-10 16:23:27,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:23:27,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 4586 transitions. [2021-06-10 16:23:27,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 52.71264367816092) internal successors, (4586), 87 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:23:27,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 69.0) internal successors, (6072), 88 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:23:27,610 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 69.0) internal successors, (6072), 88 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:23:27,610 INFO L185 Difference]: Start difference. First operand has 1797 places, 16613 transitions, 220353 flow. Second operand 87 states and 4586 transitions. [2021-06-10 16:23:27,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1883 places, 17246 transitions, 274148 flow [2021-06-10 16:23:54,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1877 places, 17246 transitions, 263700 flow, removed 5117 selfloop flow, removed 6 redundant places. [2021-06-10 16:23:54,353 INFO L241 Difference]: Finished difference. Result has 1893 places, 17184 transitions, 231837 flow [2021-06-10 16:23:54,362 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=213425, PETRI_DIFFERENCE_MINUEND_PLACES=1791, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=745, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15762, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=231837, PETRI_PLACES=1893, PETRI_TRANSITIONS=17184} [2021-06-10 16:23:54,362 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, 1827 predicate places. [2021-06-10 16:23:54,362 INFO L480 AbstractCegarLoop]: Abstraction has has 1893 places, 17184 transitions, 231837 flow [2021-06-10 16:23:54,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:23:54,362 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:23:54,362 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:23:54,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-10 16:23:54,363 INFO L428 AbstractCegarLoop]: === Iteration 17 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:23:54,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:23:54,363 INFO L82 PathProgramCache]: Analyzing trace with hash -2056635881, now seen corresponding path program 15 times [2021-06-10 16:23:54,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:23:54,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405429180] [2021-06-10 16:23:54,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:23:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:23:54,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:23:54,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:23:54,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:23:54,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:23:54,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:23:54,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:23:54,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:23:54,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:23:54,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:23:54,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:23:54,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:23:54,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:23:54,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:23:54,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:23:54,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:23:54,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:23:54,586 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 16:23:54,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 16:23:54,608 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 16:23:54,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:23:54,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:23:54,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:23:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:23:54,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405429180] [2021-06-10 16:23:54,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:23:54,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-10 16:23:54,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712526425] [2021-06-10 16:23:54,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-10 16:23:54,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:23:54,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-10 16:23:54,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-10 16:23:54,612 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-10 16:23:54,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1893 places, 17184 transitions, 231837 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:23:54,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:23:54,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-10 16:23:54,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:25:46,151 INFO L129 PetriNetUnfolder]: 18451/37946 cut-off events. [2021-06-10 16:25:46,151 INFO L130 PetriNetUnfolder]: For 437303/446165 co-relation queries the response was YES. [2021-06-10 16:25:52,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 233754 conditions, 37946 events. 18451/37946 cut-off events. For 437303/446165 co-relation queries the response was YES. Maximal size of possible extension queue 1834. Compared 394881 event pairs, 218 based on Foata normal form. 794/36000 useless extension candidates. Maximal degree in co-relation 233161. Up to 23889 conditions per place. [2021-06-10 16:25:52,579 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 16287 selfloop transitions, 1003 changer transitions 0/17321 dead transitions. [2021-06-10 16:25:52,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1933 places, 17321 transitions, 269712 flow [2021-06-10 16:25:52,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-10 16:25:52,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-06-10 16:25:52,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2172 transitions. [2021-06-10 16:25:52,581 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.767762460233298 [2021-06-10 16:25:52,581 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2172 transitions. [2021-06-10 16:25:52,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2172 transitions. [2021-06-10 16:25:52,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:25:52,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2172 transitions. [2021-06-10 16:25:52,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.97560975609756) internal successors, (2172), 41 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:25:52,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 69.0) internal successors, (2898), 42 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:25:52,584 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 69.0) internal successors, (2898), 42 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:25:52,584 INFO L185 Difference]: Start difference. First operand has 1893 places, 17184 transitions, 231837 flow. Second operand 41 states and 2172 transitions. [2021-06-10 16:25:52,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1933 places, 17321 transitions, 269712 flow [2021-06-10 16:26:18,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1930 places, 17321 transitions, 260390 flow, removed 4564 selfloop flow, removed 3 redundant places. [2021-06-10 16:26:18,884 INFO L241 Difference]: Finished difference. Result has 1943 places, 17269 transitions, 227243 flow [2021-06-10 16:26:18,893 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=222623, PETRI_DIFFERENCE_MINUEND_PLACES=1890, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=932, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=227243, PETRI_PLACES=1943, PETRI_TRANSITIONS=17269} [2021-06-10 16:26:18,893 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, 1877 predicate places. [2021-06-10 16:26:18,893 INFO L480 AbstractCegarLoop]: Abstraction has has 1943 places, 17269 transitions, 227243 flow [2021-06-10 16:26:18,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:26:18,894 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:26:18,894 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:26:18,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-10 16:26:18,894 INFO L428 AbstractCegarLoop]: === Iteration 18 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:26:18,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:26:18,894 INFO L82 PathProgramCache]: Analyzing trace with hash -330087971, now seen corresponding path program 16 times [2021-06-10 16:26:18,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:26:18,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348881593] [2021-06-10 16:26:18,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:26:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:26:18,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:26:18,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:26:18,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:26:18,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:26:18,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:26:18,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:26:18,938 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-10 16:26:18,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:26:18,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:26:18,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:26:18,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:26:18,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:26:18,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:26:18,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:26:18,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:26:18,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:26:18,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:26:18,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:26:19,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:26:19,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:26:19,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:26:19,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:26:19,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:26:19,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:26:19,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:26:19,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:26:19,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:26:19,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:26:19,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:26:19,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:26:19,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:26:19,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:26:19,151 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 16:26:19,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 16:26:19,176 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-10 16:26:19,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:26:19,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:26:19,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:26:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:26:19,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348881593] [2021-06-10 16:26:19,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:26:19,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-10 16:26:19,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125821858] [2021-06-10 16:26:19,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-10 16:26:19,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:26:19,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-10 16:26:19,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-10 16:26:19,180 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-10 16:26:19,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1943 places, 17269 transitions, 227243 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:26:19,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:26:19,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-10 16:26:19,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:28:18,351 INFO L129 PetriNetUnfolder]: 19714/40328 cut-off events. [2021-06-10 16:28:18,351 INFO L130 PetriNetUnfolder]: For 490474/500027 co-relation queries the response was YES. [2021-06-10 16:28:25,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 253383 conditions, 40328 events. 19714/40328 cut-off events. For 490474/500027 co-relation queries the response was YES. Maximal size of possible extension queue 1952. Compared 421458 event pairs, 220 based on Foata normal form. 1744/39218 useless extension candidates. Maximal degree in co-relation 252791. Up to 24322 conditions per place. [2021-06-10 16:28:25,350 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 15756 selfloop transitions, 2965 changer transitions 0/18752 dead transitions. [2021-06-10 16:28:25,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2040 places, 18752 transitions, 297087 flow [2021-06-10 16:28:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-06-10 16:28:25,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-06-10 16:28:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 5212 transitions. [2021-06-10 16:28:25,359 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7707778763679385 [2021-06-10 16:28:25,359 INFO L72 ComplementDD]: Start complementDD. Operand 98 states and 5212 transitions. [2021-06-10 16:28:25,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 5212 transitions. [2021-06-10 16:28:25,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:28:25,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 98 states and 5212 transitions. [2021-06-10 16:28:25,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 99 states, 98 states have (on average 53.183673469387756) internal successors, (5212), 98 states have internal predecessors, (5212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:28:25,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 99 states, 99 states have (on average 69.0) internal successors, (6831), 99 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:28:25,365 INFO L81 ComplementDD]: Finished complementDD. Result has 99 states, 99 states have (on average 69.0) internal successors, (6831), 99 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:28:25,365 INFO L185 Difference]: Start difference. First operand has 1943 places, 17269 transitions, 227243 flow. Second operand 98 states and 5212 transitions. [2021-06-10 16:28:25,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2040 places, 18752 transitions, 297087 flow [2021-06-10 16:28:56,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2038 places, 18752 transitions, 294678 flow, removed 1183 selfloop flow, removed 2 redundant places. [2021-06-10 16:28:56,860 INFO L241 Difference]: Finished difference. Result has 2091 places, 18611 transitions, 264060 flow [2021-06-10 16:28:56,867 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=224944, PETRI_DIFFERENCE_MINUEND_PLACES=1941, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1843, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=98, PETRI_FLOW=264060, PETRI_PLACES=2091, PETRI_TRANSITIONS=18611} [2021-06-10 16:28:56,868 INFO L343 CegarLoopForPetriNet]: 66 programPoint places, 2025 predicate places. [2021-06-10 16:28:56,868 INFO L480 AbstractCegarLoop]: Abstraction has has 2091 places, 18611 transitions, 264060 flow [2021-06-10 16:28:56,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:28:56,868 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:28:56,868 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 16:28:56,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-10 16:28:56,868 INFO L428 AbstractCegarLoop]: === Iteration 19 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 16:28:56,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:28:56,868 INFO L82 PathProgramCache]: Analyzing trace with hash -2064162025, now seen corresponding path program 17 times [2021-06-10 16:28:56,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:28:56,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738927936] [2021-06-10 16:28:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:28:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:28:56,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:56,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:28:56,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:56,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:28:56,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:56,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 16:28:56,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:56,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:28:56,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:56,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:28:56,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:56,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:28:56,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:56,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:28:56,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:56,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:28:56,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:56,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:28:56,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:56,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:28:56,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:56,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:28:57,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:57,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:28:57,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:57,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:28:57,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:57,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:28:57,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:57,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:28:57,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:57,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 16:28:57,094 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 16:28:57,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 16:28:57,118 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 16:28:57,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 16:28:57,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:28:57,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:28:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:28:57,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738927936] [2021-06-10 16:28:57,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:28:57,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-10 16:28:57,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784842120] [2021-06-10 16:28:57,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-10 16:28:57,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:28:57,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-10 16:28:57,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-10 16:28:57,123 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-10 16:28:57,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2091 places, 18611 transitions, 264060 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:28:57,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:28:57,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-10 16:28:57,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-06-10 16:29:26,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-10 16:29:26,085 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-10 16:29:26,085 WARN L545 AbstractCegarLoop]: Verification canceled [2021-06-10 16:29:26,088 WARN L224 ceAbstractionStarter]: Timeout [2021-06-10 16:29:26,088 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 04:29:26 BasicIcfg [2021-06-10 16:29:26,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 16:29:26,089 INFO L168 Benchmark]: Toolchain (without parser) took 807938.88 ms. Allocated memory was 402.7 MB in the beginning and 7.8 GB in the end (delta: 7.4 GB). Free memory was 382.2 MB in the beginning and 6.2 GB in the end (delta: -5.8 GB). Peak memory consumption was 1.7 GB. Max. memory is 16.0 GB. [2021-06-10 16:29:26,089 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 402.7 MB. Free memory is still 383.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 16:29:26,089 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.44 ms. Allocated memory is still 402.7 MB. Free memory was 382.2 MB in the beginning and 380.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 16:29:26,089 INFO L168 Benchmark]: Boogie Preprocessor took 9.92 ms. Allocated memory is still 402.7 MB. Free memory was 380.7 MB in the beginning and 379.8 MB in the end (delta: 940.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 16:29:26,089 INFO L168 Benchmark]: RCFGBuilder took 244.90 ms. Allocated memory is still 402.7 MB. Free memory was 379.6 MB in the beginning and 366.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-10 16:29:26,089 INFO L168 Benchmark]: TraceAbstraction took 807662.73 ms. Allocated memory was 402.7 MB in the beginning and 7.8 GB in the end (delta: 7.4 GB). Free memory was 365.6 MB in the beginning and 6.2 GB in the end (delta: -5.8 GB). Peak memory consumption was 1.7 GB. Max. memory is 16.0 GB. [2021-06-10 16:29:26,089 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 402.7 MB. Free memory is still 383.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.44 ms. Allocated memory is still 402.7 MB. Free memory was 382.2 MB in the beginning and 380.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.92 ms. Allocated memory is still 402.7 MB. Free memory was 380.7 MB in the beginning and 379.8 MB in the end (delta: 940.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 244.90 ms. Allocated memory is still 402.7 MB. Free memory was 379.6 MB in the beginning and 366.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 807662.73 ms. Allocated memory was 402.7 MB in the beginning and 7.8 GB in the end (delta: 7.4 GB). Free memory was 365.6 MB in the beginning and 6.2 GB in the end (delta: -5.8 GB). Peak memory consumption was 1.7 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 95). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (17states, 48/69 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 67852 conditions, 7330 events (3386/7329 cut-off events. For 230829/237610 co-relation queries the response was YES. Maximal size of possible extension queue 1380. Compared 78281 event pairs, 79 based on Foata normal form. 729/9305 useless extension candidates. Maximal degree in co-relation 67247. Up to 4914 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 23.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 807502.2ms, OverallIterations: 19, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 802857.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 42.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 833 SDtfs, 2982 SDslu, 1296 SDs, 0 SdLazy, 43028 SolverSat, 3890 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16625.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1604 GetRequests, 30 SyntacticMatches, 17 SemanticMatches, 1557 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68125 ImplicationChecksByTransitivity, 42659.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=264060occurred in iteration=18, InterpolantAutomatonStates: 1494, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 35.3ms SsaConstructionTime, 151.4ms SatisfiabilityAnalysisTime, 4233.7ms InterpolantComputationTime, 893 NumberOfCodeBlocks, 893 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 874 ConstructedInterpolants, 0 QuantifiedInterpolants, 9487 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown