/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 15:09:54,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 15:09:54,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 15:09:54,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-24 15:09:54,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 15:09:54,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 15:09:54,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 15:09:54,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 15:09:54,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 15:09:54,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 15:09:54,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 15:09:54,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 15:09:54,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 15:09:54,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 15:09:54,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 15:09:54,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 15:09:54,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 15:09:54,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 15:09:54,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 15:09:54,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 15:09:54,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2021-03-24 15:09:54,311 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 15:09:54,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 15:09:54,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 15:09:54,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 15:09:54,314 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 15:09:54,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 15:09:54,315 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 15:09:54,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 15:09:54,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 15:09:54,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 15:09:54,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 15:09:54,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 15:09:54,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 15:09:54,316 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 15:09:54,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 15:09:54,317 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 15:09:54,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 15:09:54,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 15:09:54,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 15:09:54,317 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 15:09:54,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 15:09:54,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 15:09:54,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 15:09:54,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 15:09:54,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 15:09:54,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 15:09:54,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 15:09:54,319 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 15:09:54,319 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 15:09:54,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 15:09:54,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 15:09:54,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 15:09:54,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 15:09:54,678 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 15:09:54,679 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 15:09:54,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2021-03-24 15:09:54,680 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2021-03-24 15:09:54,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 15:09:54,717 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 15:09:54,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 15:09:54,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 15:09:54,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 15:09:54,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:09:54" (1/1) ... [2021-03-24 15:09:54,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:09:54" (1/1) ... [2021-03-24 15:09:54,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 15:09:54,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 15:09:54,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 15:09:54,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 15:09:54,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:09:54" (1/1) ... [2021-03-24 15:09:54,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:09:54" (1/1) ... [2021-03-24 15:09:54,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:09:54" (1/1) ... [2021-03-24 15:09:54,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:09:54" (1/1) ... [2021-03-24 15:09:54,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:09:54" (1/1) ... [2021-03-24 15:09:54,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:09:54" (1/1) ... [2021-03-24 15:09:54,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:09:54" (1/1) ... [2021-03-24 15:09:54,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 15:09:54,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 15:09:54,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 15:09:54,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 15:09:54,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:09:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 15:09:54,823 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-24 15:09:54,823 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-24 15:09:54,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-24 15:09:54,825 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-24 15:09:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-24 15:09:54,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-24 15:09:54,825 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 15:09:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 15:09:54,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 15:09:54,825 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-24 15:09:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-24 15:09:54,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-24 15:09:54,826 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-24 15:09:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-24 15:09:54,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-24 15:09:54,826 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-24 15:09:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-24 15:09:54,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-24 15:09:54,827 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-24 15:09:54,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-24 15:09:54,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-24 15:09:54,828 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 15:09:55,072 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 15:09:55,072 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 15:09:55,073 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 03:09:55 BoogieIcfgContainer [2021-03-24 15:09:55,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 15:09:55,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 15:09:55,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 15:09:55,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 15:09:55,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:09:54" (1/2) ... [2021-03-24 15:09:55,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767a468 and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 03:09:55, skipping insertion in model container [2021-03-24 15:09:55,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 03:09:55" (2/2) ... [2021-03-24 15:09:55,079 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2021-03-24 15:09:55,091 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 15:09:55,094 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 15:09:55,095 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 15:09:55,174 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-03-24 15:09:55,189 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-03-24 15:09:55,205 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 15:09:55,205 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 15:09:55,205 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 15:09:55,205 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 15:09:55,205 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 15:09:55,205 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 15:09:55,206 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 15:09:55,206 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 15:09:55,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 65 transitions, 202 flow [2021-03-24 15:09:55,297 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-03-24 15:09:55,298 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-24 15:09:55,302 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. [2021-03-24 15:09:55,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 65 transitions, 202 flow [2021-03-24 15:09:55,307 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 51 transitions, 150 flow [2021-03-24 15:09:55,308 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 15:09:55,328 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 51 transitions, 150 flow [2021-03-24 15:09:55,336 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 51 transitions, 150 flow [2021-03-24 15:09:55,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 51 transitions, 150 flow [2021-03-24 15:09:55,370 INFO L129 PetriNetUnfolder]: 4/51 cut-off events. [2021-03-24 15:09:55,371 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-24 15:09:55,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 51 events. 4/51 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-03-24 15:09:55,374 INFO L142 LiptonReduction]: Number of co-enabled transitions 1336 [2021-03-24 15:09:55,507 INFO L154 LiptonReduction]: Checked pairs total: 2462 [2021-03-24 15:09:55,508 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-24 15:09:55,512 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 205 [2021-03-24 15:09:55,551 INFO L129 PetriNetUnfolder]: 4/45 cut-off events. [2021-03-24 15:09:55,552 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-24 15:09:55,552 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:09:55,553 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] [2021-03-24 15:09:55,553 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]=== [2021-03-24 15:09:55,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:09:55,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1252450072, now seen corresponding path program 1 times [2021-03-24 15:09:55,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:09:55,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216670798] [2021-03-24 15:09:55,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:09:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:09:55,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:55,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:09:55,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:55,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-24 15:09:55,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:55,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:09:55,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:09:55,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216670798] [2021-03-24 15:09:55,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:09:55,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 15:09:55,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098150235] [2021-03-24 15:09:55,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 15:09:55,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:09:55,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 15:09:55,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 15:09:55,701 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 74 [2021-03-24 15:09:55,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:55,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:09:55,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 74 [2021-03-24 15:09:55,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:09:55,722 INFO L129 PetriNetUnfolder]: 6/52 cut-off events. [2021-03-24 15:09:55,722 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-24 15:09:55,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 52 events. 6/52 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 1 based on Foata normal form. 1/47 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2021-03-24 15:09:55,724 INFO L132 encePairwiseOnDemand]: 71/74 looper letters, 2 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2021-03-24 15:09:55,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 46 transitions, 148 flow [2021-03-24 15:09:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 15:09:55,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 15:09:55,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 212 transitions. [2021-03-24 15:09:55,734 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.954954954954955 [2021-03-24 15:09:55,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 212 transitions. [2021-03-24 15:09:55,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 212 transitions. [2021-03-24 15:09:55,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:09:55,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 212 transitions. [2021-03-24 15:09:55,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:55,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:55,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:55,745 INFO L185 Difference]: Start difference. First operand has 61 places, 46 transitions, 140 flow. Second operand 3 states and 212 transitions. [2021-03-24 15:09:55,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 46 transitions, 148 flow [2021-03-24 15:09:55,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 46 transitions, 116 flow, removed 0 selfloop flow, removed 12 redundant places. [2021-03-24 15:09:55,750 INFO L241 Difference]: Finished difference. Result has 52 places, 46 transitions, 116 flow [2021-03-24 15:09:55,752 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2021-03-24 15:09:55,753 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2021-03-24 15:09:55,753 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 116 flow [2021-03-24 15:09:55,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:55,753 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:09:55,753 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:09:55,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 15:09:55,754 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]=== [2021-03-24 15:09:55,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:09:55,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1964532269, now seen corresponding path program 1 times [2021-03-24 15:09:55,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:09:55,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938771598] [2021-03-24 15:09:55,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:09:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:09:55,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:55,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:09:55,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:55,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-24 15:09:55,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:55,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:09:55,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:09:55,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938771598] [2021-03-24 15:09:55,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:09:55,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 15:09:55,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200357814] [2021-03-24 15:09:55,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 15:09:55,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:09:55,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 15:09:55,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 15:09:55,795 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 74 [2021-03-24 15:09:55,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:55,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:09:55,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 74 [2021-03-24 15:09:55,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:09:55,809 INFO L129 PetriNetUnfolder]: 6/52 cut-off events. [2021-03-24 15:09:55,809 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 15:09:55,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 52 events. 6/52 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 1 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 60. Up to 6 conditions per place. [2021-03-24 15:09:55,810 INFO L132 encePairwiseOnDemand]: 71/74 looper letters, 2 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2021-03-24 15:09:55,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 124 flow [2021-03-24 15:09:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 15:09:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 15:09:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 212 transitions. [2021-03-24 15:09:55,813 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.954954954954955 [2021-03-24 15:09:55,813 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 212 transitions. [2021-03-24 15:09:55,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 212 transitions. [2021-03-24 15:09:55,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:09:55,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 212 transitions. [2021-03-24 15:09:55,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:55,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:55,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:55,817 INFO L185 Difference]: Start difference. First operand has 52 places, 46 transitions, 116 flow. Second operand 3 states and 212 transitions. [2021-03-24 15:09:55,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 124 flow [2021-03-24 15:09:55,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 15:09:55,818 INFO L241 Difference]: Finished difference. Result has 53 places, 46 transitions, 120 flow [2021-03-24 15:09:55,818 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2021-03-24 15:09:55,819 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2021-03-24 15:09:55,819 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 120 flow [2021-03-24 15:09:55,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:55,819 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:09:55,820 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] [2021-03-24 15:09:55,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 15:09:55,820 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]=== [2021-03-24 15:09:55,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:09:55,820 INFO L82 PathProgramCache]: Analyzing trace with hash 244411589, now seen corresponding path program 1 times [2021-03-24 15:09:55,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:09:55,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664235971] [2021-03-24 15:09:55,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:09:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:09:55,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:55,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:09:55,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:55,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-24 15:09:55,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:55,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:09:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:09:55,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664235971] [2021-03-24 15:09:55,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:09:55,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 15:09:55,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373351589] [2021-03-24 15:09:55,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 15:09:55,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:09:55,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 15:09:55,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 15:09:55,884 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 74 [2021-03-24 15:09:55,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:55,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:09:55,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 74 [2021-03-24 15:09:55,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:09:55,909 INFO L129 PetriNetUnfolder]: 5/50 cut-off events. [2021-03-24 15:09:55,909 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-24 15:09:55,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 50 events. 5/50 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 1 based on Foata normal form. 1/47 useless extension candidates. Maximal degree in co-relation 61. Up to 6 conditions per place. [2021-03-24 15:09:55,910 INFO L132 encePairwiseOnDemand]: 71/74 looper letters, 2 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2021-03-24 15:09:55,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 128 flow [2021-03-24 15:09:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 15:09:55,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 15:09:55,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 212 transitions. [2021-03-24 15:09:55,916 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.954954954954955 [2021-03-24 15:09:55,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 212 transitions. [2021-03-24 15:09:55,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 212 transitions. [2021-03-24 15:09:55,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:09:55,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 212 transitions. [2021-03-24 15:09:55,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:55,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:55,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:55,922 INFO L185 Difference]: Start difference. First operand has 53 places, 46 transitions, 120 flow. Second operand 3 states and 212 transitions. [2021-03-24 15:09:55,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 128 flow [2021-03-24 15:09:55,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 121 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 15:09:55,926 INFO L241 Difference]: Finished difference. Result has 53 places, 46 transitions, 121 flow [2021-03-24 15:09:55,926 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2021-03-24 15:09:55,926 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2021-03-24 15:09:55,926 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 121 flow [2021-03-24 15:09:55,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:55,927 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:09:55,927 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] [2021-03-24 15:09:55,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 15:09:55,927 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]=== [2021-03-24 15:09:55,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:09:55,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1577206623, now seen corresponding path program 2 times [2021-03-24 15:09:55,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:09:55,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921100078] [2021-03-24 15:09:55,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:09:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:09:56,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:56,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:09:56,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:56,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:09:56,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:56,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:09:56,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:56,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:09:56,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:56,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:09:56,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:56,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:09:56,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:56,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:09:56,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:56,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:09:56,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:56,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:09:56,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:56,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:09:56,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:56,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:09:56,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:56,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:09:56,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:56,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:09:56,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:56,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:09:56,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:56,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:09:56,389 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:09:56,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:09:56,398 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:09:56,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:09:56,433 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 15:09:56,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:09:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:09:56,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921100078] [2021-03-24 15:09:56,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:09:56,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 15:09:56,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458947619] [2021-03-24 15:09:56,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 15:09:56,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:09:56,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 15:09:56,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-24 15:09:56,442 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:09:56,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 121 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) [2021-03-24 15:09:56,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:09:56,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:09:56,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:09:57,954 INFO L129 PetriNetUnfolder]: 1094/2025 cut-off events. [2021-03-24 15:09:57,955 INFO L130 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2021-03-24 15:09:57,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3733 conditions, 2025 events. 1094/2025 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 12053 event pairs, 241 based on Foata normal form. 1/1853 useless extension candidates. Maximal degree in co-relation 3694. Up to 1125 conditions per place. [2021-03-24 15:09:57,972 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 65 selfloop transitions, 74 changer transitions 0/165 dead transitions. [2021-03-24 15:09:57,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 165 transitions, 687 flow [2021-03-24 15:09:57,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-24 15:09:57,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-03-24 15:09:57,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1436 transitions. [2021-03-24 15:09:57,977 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7187187187187187 [2021-03-24 15:09:57,977 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1436 transitions. [2021-03-24 15:09:57,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1436 transitions. [2021-03-24 15:09:57,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:09:57,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1436 transitions. [2021-03-24 15:09:57,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 53.18518518518518) internal successors, (1436), 27 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:57,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 74.0) internal successors, (2072), 28 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:57,984 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 74.0) internal successors, (2072), 28 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:57,985 INFO L185 Difference]: Start difference. First operand has 53 places, 46 transitions, 121 flow. Second operand 27 states and 1436 transitions. [2021-03-24 15:09:57,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 165 transitions, 687 flow [2021-03-24 15:09:57,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 165 transitions, 659 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 15:09:57,991 INFO L241 Difference]: Finished difference. Result has 88 places, 120 transitions, 513 flow [2021-03-24 15:09:57,991 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=513, PETRI_PLACES=88, PETRI_TRANSITIONS=120} [2021-03-24 15:09:57,991 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 27 predicate places. [2021-03-24 15:09:57,991 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 120 transitions, 513 flow [2021-03-24 15:09:57,992 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) [2021-03-24 15:09:57,992 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:09:57,992 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] [2021-03-24 15:09:57,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 15:09:57,992 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]=== [2021-03-24 15:09:57,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:09:57,993 INFO L82 PathProgramCache]: Analyzing trace with hash -39220459, now seen corresponding path program 3 times [2021-03-24 15:09:57,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:09:57,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316879543] [2021-03-24 15:09:57,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:09:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:09:58,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:58,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:09:58,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:58,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-24 15:09:58,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:58,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:09:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:09:58,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316879543] [2021-03-24 15:09:58,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:09:58,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 15:09:58,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102194295] [2021-03-24 15:09:58,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 15:09:58,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:09:58,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 15:09:58,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 15:09:58,014 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 74 [2021-03-24 15:09:58,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 120 transitions, 513 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:58,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:09:58,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 74 [2021-03-24 15:09:58,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:09:58,090 INFO L129 PetriNetUnfolder]: 335/838 cut-off events. [2021-03-24 15:09:58,090 INFO L130 PetriNetUnfolder]: For 65/66 co-relation queries the response was YES. [2021-03-24 15:09:58,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 838 events. 335/838 cut-off events. For 65/66 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5055 event pairs, 150 based on Foata normal form. 4/726 useless extension candidates. Maximal degree in co-relation 1558. Up to 394 conditions per place. [2021-03-24 15:09:58,099 INFO L132 encePairwiseOnDemand]: 71/74 looper letters, 2 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2021-03-24 15:09:58,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 111 transitions, 484 flow [2021-03-24 15:09:58,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 15:09:58,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 15:09:58,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 212 transitions. [2021-03-24 15:09:58,101 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.954954954954955 [2021-03-24 15:09:58,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 212 transitions. [2021-03-24 15:09:58,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 212 transitions. [2021-03-24 15:09:58,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:09:58,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 212 transitions. [2021-03-24 15:09:58,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:58,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:58,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:58,103 INFO L185 Difference]: Start difference. First operand has 88 places, 120 transitions, 513 flow. Second operand 3 states and 212 transitions. [2021-03-24 15:09:58,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 111 transitions, 484 flow [2021-03-24 15:09:58,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 15:09:58,108 INFO L241 Difference]: Finished difference. Result has 90 places, 111 transitions, 482 flow [2021-03-24 15:09:58,109 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=90, PETRI_TRANSITIONS=111} [2021-03-24 15:09:58,109 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 29 predicate places. [2021-03-24 15:09:58,109 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 111 transitions, 482 flow [2021-03-24 15:09:58,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:58,109 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:09:58,110 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] [2021-03-24 15:09:58,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 15:09:58,110 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]=== [2021-03-24 15:09:58,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:09:58,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1570778955, now seen corresponding path program 4 times [2021-03-24 15:09:58,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:09:58,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746752302] [2021-03-24 15:09:58,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:09:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:09:58,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:58,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:09:58,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:58,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:09:58,208 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-24 15:09:58,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:09:58,214 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-24 15:09:58,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:09:58,227 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 15:09:58,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 15:09:58,240 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 15:09:58,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 15:09:58,251 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 15:09:58,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:09:58,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:58,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:09:58,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:58,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:09:58,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:58,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:09:58,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:58,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:09:58,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:58,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:09:58,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:58,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:09:58,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:58,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:09:58,391 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 15:09:58,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 15:09:58,423 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:09:58,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:09:58,447 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 15:09:58,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:09:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:09:58,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746752302] [2021-03-24 15:09:58,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:09:58,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 15:09:58,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201581450] [2021-03-24 15:09:58,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 15:09:58,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:09:58,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 15:09:58,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-24 15:09:58,455 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:09:58,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 111 transitions, 482 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) [2021-03-24 15:09:58,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:09:58,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:09:58,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:02,198 INFO L129 PetriNetUnfolder]: 1340/2487 cut-off events. [2021-03-24 15:10:02,198 INFO L130 PetriNetUnfolder]: For 1647/1692 co-relation queries the response was YES. [2021-03-24 15:10:02,208 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6704 conditions, 2487 events. 1340/2487 cut-off events. For 1647/1692 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 14621 event pairs, 325 based on Foata normal form. 5/2264 useless extension candidates. Maximal degree in co-relation 6663. Up to 1248 conditions per place. [2021-03-24 15:10:02,224 INFO L132 encePairwiseOnDemand]: 56/74 looper letters, 149 selfloop transitions, 317 changer transitions 0/492 dead transitions. [2021-03-24 15:10:02,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 492 transitions, 2999 flow [2021-03-24 15:10:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-03-24 15:10:02,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-03-24 15:10:02,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 4766 transitions. [2021-03-24 15:10:02,237 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7077517077517077 [2021-03-24 15:10:02,238 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 4766 transitions. [2021-03-24 15:10:02,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 4766 transitions. [2021-03-24 15:10:02,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:02,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 4766 transitions. [2021-03-24 15:10:02,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 52.37362637362637) internal successors, (4766), 91 states have internal predecessors, (4766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:02,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 74.0) internal successors, (6808), 92 states have internal predecessors, (6808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:02,274 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 74.0) internal successors, (6808), 92 states have internal predecessors, (6808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:02,274 INFO L185 Difference]: Start difference. First operand has 90 places, 111 transitions, 482 flow. Second operand 91 states and 4766 transitions. [2021-03-24 15:10:02,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 492 transitions, 2999 flow [2021-03-24 15:10:02,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 492 transitions, 2987 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 15:10:02,294 INFO L241 Difference]: Finished difference. Result has 195 places, 471 transitions, 2875 flow [2021-03-24 15:10:02,294 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=91, PETRI_FLOW=2875, PETRI_PLACES=195, PETRI_TRANSITIONS=471} [2021-03-24 15:10:02,295 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 134 predicate places. [2021-03-24 15:10:02,295 INFO L480 AbstractCegarLoop]: Abstraction has has 195 places, 471 transitions, 2875 flow [2021-03-24 15:10:02,295 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) [2021-03-24 15:10:02,295 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:02,296 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] [2021-03-24 15:10:02,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 15:10:02,296 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]=== [2021-03-24 15:10:02,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:02,297 INFO L82 PathProgramCache]: Analyzing trace with hash -879894975, now seen corresponding path program 5 times [2021-03-24 15:10:02,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:02,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525699364] [2021-03-24 15:10:02,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:02,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:02,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:02,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:02,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:02,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:02,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:02,388 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 15:10:02,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:02,396 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-24 15:10:02,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:02,405 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-03-24 15:10:02,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:02,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:02,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:02,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:02,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:02,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:02,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:02,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:02,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:02,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:02,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:02,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:02,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:02,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:02,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:02,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:02,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:02,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:02,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:02,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:02,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:02,614 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:10:02,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:02,642 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 15:10:02,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:02,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525699364] [2021-03-24 15:10:02,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:02,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-24 15:10:02,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517644731] [2021-03-24 15:10:02,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-24 15:10:02,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:02,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-24 15:10:02,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-24 15:10:02,649 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:10:02,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 471 transitions, 2875 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) [2021-03-24 15:10:02,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:02,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:10:02,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:07,966 INFO L129 PetriNetUnfolder]: 2039/3829 cut-off events. [2021-03-24 15:10:07,966 INFO L130 PetriNetUnfolder]: For 9807/10020 co-relation queries the response was YES. [2021-03-24 15:10:07,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13905 conditions, 3829 events. 2039/3829 cut-off events. For 9807/10020 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 24507 event pairs, 316 based on Foata normal form. 5/3523 useless extension candidates. Maximal degree in co-relation 13827. Up to 1951 conditions per place. [2021-03-24 15:10:08,024 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 498 selfloop transitions, 582 changer transitions 0/1106 dead transitions. [2021-03-24 15:10:08,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 1106 transitions, 9210 flow [2021-03-24 15:10:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-03-24 15:10:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2021-03-24 15:10:08,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 6055 transitions. [2021-03-24 15:10:08,036 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7115158636897767 [2021-03-24 15:10:08,036 INFO L72 ComplementDD]: Start complementDD. Operand 115 states and 6055 transitions. [2021-03-24 15:10:08,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 6055 transitions. [2021-03-24 15:10:08,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:08,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 115 states and 6055 transitions. [2021-03-24 15:10:08,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 116 states, 115 states have (on average 52.65217391304348) internal successors, (6055), 115 states have internal predecessors, (6055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:08,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 116 states, 116 states have (on average 74.0) internal successors, (8584), 116 states have internal predecessors, (8584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:08,066 INFO L81 ComplementDD]: Finished complementDD. Result has 116 states, 116 states have (on average 74.0) internal successors, (8584), 116 states have internal predecessors, (8584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:08,067 INFO L185 Difference]: Start difference. First operand has 195 places, 471 transitions, 2875 flow. Second operand 115 states and 6055 transitions. [2021-03-24 15:10:08,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 1106 transitions, 9210 flow [2021-03-24 15:10:08,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 1106 transitions, 8305 flow, removed 414 selfloop flow, removed 2 redundant places. [2021-03-24 15:10:08,129 INFO L241 Difference]: Finished difference. Result has 323 places, 1073 transitions, 7644 flow [2021-03-24 15:10:08,129 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=2204, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=115, PETRI_FLOW=7644, PETRI_PLACES=323, PETRI_TRANSITIONS=1073} [2021-03-24 15:10:08,130 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 262 predicate places. [2021-03-24 15:10:08,130 INFO L480 AbstractCegarLoop]: Abstraction has has 323 places, 1073 transitions, 7644 flow [2021-03-24 15:10:08,130 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) [2021-03-24 15:10:08,130 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:08,130 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] [2021-03-24 15:10:08,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 15:10:08,131 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]=== [2021-03-24 15:10:08,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:08,131 INFO L82 PathProgramCache]: Analyzing trace with hash -494561699, now seen corresponding path program 6 times [2021-03-24 15:10:08,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:08,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31317457] [2021-03-24 15:10:08,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:08,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:08,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:08,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:08,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:08,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:08,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:08,225 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 15:10:08,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:08,232 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-24 15:10:08,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:08,239 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-03-24 15:10:08,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:08,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:08,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:08,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:08,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:08,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:08,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:08,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:08,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:08,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:08,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:08,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:08,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:08,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:08,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:08,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:08,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:08,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:08,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:08,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:08,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:08,432 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:10:08,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:08,452 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 15:10:08,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:08,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31317457] [2021-03-24 15:10:08,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:08,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-24 15:10:08,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858803738] [2021-03-24 15:10:08,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-24 15:10:08,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:08,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-24 15:10:08,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-24 15:10:08,459 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:10:08,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 1073 transitions, 7644 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) [2021-03-24 15:10:08,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:08,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:10:08,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:14,291 INFO L129 PetriNetUnfolder]: 2809/5323 cut-off events. [2021-03-24 15:10:14,292 INFO L130 PetriNetUnfolder]: For 15476/16045 co-relation queries the response was YES. [2021-03-24 15:10:14,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21909 conditions, 5323 events. 2809/5323 cut-off events. For 15476/16045 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 36711 event pairs, 295 based on Foata normal form. 14/4947 useless extension candidates. Maximal degree in co-relation 21773. Up to 2887 conditions per place. [2021-03-24 15:10:14,372 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 1046 selfloop transitions, 692 changer transitions 0/1764 dead transitions. [2021-03-24 15:10:14,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 1764 transitions, 16878 flow [2021-03-24 15:10:14,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-03-24 15:10:14,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-03-24 15:10:14,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 6141 transitions. [2021-03-24 15:10:14,379 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7154007455731594 [2021-03-24 15:10:14,380 INFO L72 ComplementDD]: Start complementDD. Operand 116 states and 6141 transitions. [2021-03-24 15:10:14,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 6141 transitions. [2021-03-24 15:10:14,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:14,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 116 states and 6141 transitions. [2021-03-24 15:10:14,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 117 states, 116 states have (on average 52.939655172413794) internal successors, (6141), 116 states have internal predecessors, (6141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:14,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 117 states, 117 states have (on average 74.0) internal successors, (8658), 117 states have internal predecessors, (8658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:14,405 INFO L81 ComplementDD]: Finished complementDD. Result has 117 states, 117 states have (on average 74.0) internal successors, (8658), 117 states have internal predecessors, (8658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:14,405 INFO L185 Difference]: Start difference. First operand has 323 places, 1073 transitions, 7644 flow. Second operand 116 states and 6141 transitions. [2021-03-24 15:10:14,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 1764 transitions, 16878 flow [2021-03-24 15:10:14,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 1764 transitions, 15087 flow, removed 894 selfloop flow, removed 1 redundant places. [2021-03-24 15:10:14,582 INFO L241 Difference]: Finished difference. Result has 456 places, 1708 transitions, 13311 flow [2021-03-24 15:10:14,584 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=6015, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=891, PETRI_DIFFERENCE_SUBTRAHEND_STATES=116, PETRI_FLOW=13311, PETRI_PLACES=456, PETRI_TRANSITIONS=1708} [2021-03-24 15:10:14,584 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 395 predicate places. [2021-03-24 15:10:14,584 INFO L480 AbstractCegarLoop]: Abstraction has has 456 places, 1708 transitions, 13311 flow [2021-03-24 15:10:14,591 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) [2021-03-24 15:10:14,591 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:14,591 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] [2021-03-24 15:10:14,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 15:10:14,591 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]=== [2021-03-24 15:10:14,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:14,592 INFO L82 PathProgramCache]: Analyzing trace with hash -458225625, now seen corresponding path program 7 times [2021-03-24 15:10:14,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:14,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427202434] [2021-03-24 15:10:14,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:14,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:14,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:14,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:14,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:14,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:14,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:14,676 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 15:10:14,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:14,684 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-24 15:10:14,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:14,692 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-24 15:10:14,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:14,702 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-03-24 15:10:14,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:14,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:14,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:14,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:14,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:14,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:14,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:14,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:14,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:14,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:14,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:14,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:14,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:14,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:14,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:14,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:14,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:14,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:14,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:14,897 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:10:14,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:14,922 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 15:10:14,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:14,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:14,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427202434] [2021-03-24 15:10:14,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:14,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-24 15:10:14,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330108409] [2021-03-24 15:10:14,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-24 15:10:14,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:14,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-24 15:10:14,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-24 15:10:14,928 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:10:14,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 1708 transitions, 13311 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) [2021-03-24 15:10:14,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:14,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:10:14,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:20,716 INFO L129 PetriNetUnfolder]: 3437/6529 cut-off events. [2021-03-24 15:10:20,716 INFO L130 PetriNetUnfolder]: For 21613/22533 co-relation queries the response was YES. [2021-03-24 15:10:20,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28992 conditions, 6529 events. 3437/6529 cut-off events. For 21613/22533 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 46840 event pairs, 312 based on Foata normal form. 12/6042 useless extension candidates. Maximal degree in co-relation 28773. Up to 3889 conditions per place. [2021-03-24 15:10:20,837 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 1650 selfloop transitions, 653 changer transitions 0/2329 dead transitions. [2021-03-24 15:10:20,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 2329 transitions, 24308 flow [2021-03-24 15:10:20,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-03-24 15:10:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-03-24 15:10:20,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 6037 transitions. [2021-03-24 15:10:20,844 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7156235182550972 [2021-03-24 15:10:20,845 INFO L72 ComplementDD]: Start complementDD. Operand 114 states and 6037 transitions. [2021-03-24 15:10:20,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 6037 transitions. [2021-03-24 15:10:20,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:20,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 114 states and 6037 transitions. [2021-03-24 15:10:20,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 115 states, 114 states have (on average 52.95614035087719) internal successors, (6037), 114 states have internal predecessors, (6037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:20,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 115 states, 115 states have (on average 74.0) internal successors, (8510), 115 states have internal predecessors, (8510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:20,871 INFO L81 ComplementDD]: Finished complementDD. Result has 115 states, 115 states have (on average 74.0) internal successors, (8510), 115 states have internal predecessors, (8510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:20,872 INFO L185 Difference]: Start difference. First operand has 456 places, 1708 transitions, 13311 flow. Second operand 114 states and 6037 transitions. [2021-03-24 15:10:20,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 2329 transitions, 24308 flow [2021-03-24 15:10:21,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 2329 transitions, 21877 flow, removed 1209 selfloop flow, removed 2 redundant places. [2021-03-24 15:10:21,189 INFO L241 Difference]: Finished difference. Result has 586 places, 2286 transitions, 18936 flow [2021-03-24 15:10:21,191 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=10952, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=114, PETRI_FLOW=18936, PETRI_PLACES=586, PETRI_TRANSITIONS=2286} [2021-03-24 15:10:21,191 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 525 predicate places. [2021-03-24 15:10:21,192 INFO L480 AbstractCegarLoop]: Abstraction has has 586 places, 2286 transitions, 18936 flow [2021-03-24 15:10:21,192 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) [2021-03-24 15:10:21,192 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:21,192 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] [2021-03-24 15:10:21,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 15:10:21,192 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]=== [2021-03-24 15:10:21,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:21,193 INFO L82 PathProgramCache]: Analyzing trace with hash -844109041, now seen corresponding path program 8 times [2021-03-24 15:10:21,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:21,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668458139] [2021-03-24 15:10:21,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:21,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:21,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:21,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:21,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:21,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:21,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:21,246 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 15:10:21,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:21,254 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-24 15:10:21,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:21,262 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-03-24 15:10:21,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:21,272 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-03-24 15:10:21,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:21,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:21,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:21,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:21,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:21,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:21,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:21,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:21,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:21,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:21,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:21,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:21,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:21,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:21,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:21,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:21,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:21,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:21,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:21,465 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:10:21,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:21,492 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 15:10:21,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:21,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:21,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668458139] [2021-03-24 15:10:21,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:21,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-24 15:10:21,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398380896] [2021-03-24 15:10:21,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-24 15:10:21,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:21,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-24 15:10:21,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-24 15:10:21,497 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:10:21,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 2286 transitions, 18936 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) [2021-03-24 15:10:21,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:21,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:10:21,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:24,286 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-03-24 15:10:28,046 INFO L129 PetriNetUnfolder]: 4061/7738 cut-off events. [2021-03-24 15:10:28,047 INFO L130 PetriNetUnfolder]: For 27057/28186 co-relation queries the response was YES. [2021-03-24 15:10:28,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35858 conditions, 7738 events. 4061/7738 cut-off events. For 27057/28186 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 57459 event pairs, 191 based on Foata normal form. 67/7225 useless extension candidates. Maximal degree in co-relation 35651. Up to 4623 conditions per place. [2021-03-24 15:10:28,163 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 2019 selfloop transitions, 857 changer transitions 0/2902 dead transitions. [2021-03-24 15:10:28,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 700 places, 2902 transitions, 31850 flow [2021-03-24 15:10:28,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-03-24 15:10:28,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2021-03-24 15:10:28,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 6104 transitions. [2021-03-24 15:10:28,169 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7172737955346651 [2021-03-24 15:10:28,169 INFO L72 ComplementDD]: Start complementDD. Operand 115 states and 6104 transitions. [2021-03-24 15:10:28,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 6104 transitions. [2021-03-24 15:10:28,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:28,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 115 states and 6104 transitions. [2021-03-24 15:10:28,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 116 states, 115 states have (on average 53.07826086956522) internal successors, (6104), 115 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:28,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 116 states, 116 states have (on average 74.0) internal successors, (8584), 116 states have internal predecessors, (8584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:28,189 INFO L81 ComplementDD]: Finished complementDD. Result has 116 states, 116 states have (on average 74.0) internal successors, (8584), 116 states have internal predecessors, (8584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:28,189 INFO L185 Difference]: Start difference. First operand has 586 places, 2286 transitions, 18936 flow. Second operand 115 states and 6104 transitions. [2021-03-24 15:10:28,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 700 places, 2902 transitions, 31850 flow [2021-03-24 15:10:28,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 699 places, 2902 transitions, 28351 flow, removed 1748 selfloop flow, removed 1 redundant places. [2021-03-24 15:10:28,686 INFO L241 Difference]: Finished difference. Result has 718 places, 2860 transitions, 24774 flow [2021-03-24 15:10:28,688 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=15587, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=366, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1879, PETRI_DIFFERENCE_SUBTRAHEND_STATES=115, PETRI_FLOW=24774, PETRI_PLACES=718, PETRI_TRANSITIONS=2860} [2021-03-24 15:10:28,688 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 657 predicate places. [2021-03-24 15:10:28,688 INFO L480 AbstractCegarLoop]: Abstraction has has 718 places, 2860 transitions, 24774 flow [2021-03-24 15:10:28,689 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) [2021-03-24 15:10:28,689 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:28,689 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] [2021-03-24 15:10:28,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 15:10:28,689 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]=== [2021-03-24 15:10:28,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:28,689 INFO L82 PathProgramCache]: Analyzing trace with hash 713638975, now seen corresponding path program 9 times [2021-03-24 15:10:28,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:28,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102957855] [2021-03-24 15:10:28,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:28,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:28,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:28,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:28,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:28,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:28,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:28,738 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 15:10:28,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:28,745 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-24 15:10:28,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:28,753 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-24 15:10:28,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 15:10:28,765 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-24 15:10:28,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 15:10:28,778 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-24 15:10:28,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-24 15:10:28,792 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-24 15:10:28,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-24 15:10:28,807 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-24 15:10:28,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-24 15:10:28,842 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-24 15:10:28,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-24 15:10:28,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:28,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:28,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:28,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:28,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:28,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:28,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:28,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:28,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:28,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:28,961 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:10:28,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:28,986 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 15:10:28,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:28,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102957855] [2021-03-24 15:10:28,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:28,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-24 15:10:28,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164509439] [2021-03-24 15:10:28,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-24 15:10:28,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:28,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-24 15:10:28,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-03-24 15:10:28,991 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:10:28,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 718 places, 2860 transitions, 24774 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) [2021-03-24 15:10:28,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:28,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:10:28,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:34,464 INFO L129 PetriNetUnfolder]: 4573/8661 cut-off events. [2021-03-24 15:10:34,464 INFO L130 PetriNetUnfolder]: For 34557/36573 co-relation queries the response was YES. [2021-03-24 15:10:34,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41775 conditions, 8661 events. 4573/8661 cut-off events. For 34557/36573 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 65168 event pairs, 199 based on Foata normal form. 32/8063 useless extension candidates. Maximal degree in co-relation 41570. Up to 5606 conditions per place. [2021-03-24 15:10:34,588 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 2730 selfloop transitions, 581 changer transitions 0/3337 dead transitions. [2021-03-24 15:10:34,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 786 places, 3337 transitions, 37669 flow [2021-03-24 15:10:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-03-24 15:10:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-03-24 15:10:34,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 3675 transitions. [2021-03-24 15:10:34,593 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7197414806110458 [2021-03-24 15:10:34,593 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 3675 transitions. [2021-03-24 15:10:34,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 3675 transitions. [2021-03-24 15:10:34,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:34,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 3675 transitions. [2021-03-24 15:10:34,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 53.26086956521739) internal successors, (3675), 69 states have internal predecessors, (3675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:34,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 74.0) internal successors, (5180), 70 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:34,604 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 74.0) internal successors, (5180), 70 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:34,604 INFO L185 Difference]: Start difference. First operand has 718 places, 2860 transitions, 24774 flow. Second operand 69 states and 3675 transitions. [2021-03-24 15:10:34,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 786 places, 3337 transitions, 37669 flow [2021-03-24 15:10:35,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 785 places, 3337 transitions, 33536 flow, removed 2065 selfloop flow, removed 1 redundant places. [2021-03-24 15:10:35,152 INFO L241 Difference]: Finished difference. Result has 813 places, 3253 transitions, 27896 flow [2021-03-24 15:10:35,155 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=20755, PETRI_DIFFERENCE_MINUEND_PLACES=717, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2860, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=27896, PETRI_PLACES=813, PETRI_TRANSITIONS=3253} [2021-03-24 15:10:35,155 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 752 predicate places. [2021-03-24 15:10:35,155 INFO L480 AbstractCegarLoop]: Abstraction has has 813 places, 3253 transitions, 27896 flow [2021-03-24 15:10:35,155 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) [2021-03-24 15:10:35,156 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:35,156 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:10:35,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 15:10:35,156 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]=== [2021-03-24 15:10:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:35,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1318331927, now seen corresponding path program 10 times [2021-03-24 15:10:35,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:35,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212645939] [2021-03-24 15:10:35,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:35,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:35,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:35,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:35,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:35,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:35,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:35,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:35,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:35,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:35,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:35,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:35,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:35,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:35,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:35,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:35,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:35,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:35,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:35,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:35,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:35,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:35,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:35,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:35,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:35,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:35,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:35,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:35,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:35,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:35,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:35,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:35,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:35,411 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:10:35,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:35,437 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 15:10:35,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:35,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212645939] [2021-03-24 15:10:35,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:35,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 15:10:35,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606922667] [2021-03-24 15:10:35,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 15:10:35,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:35,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 15:10:35,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-24 15:10:35,442 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:10:35,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 813 places, 3253 transitions, 27896 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) [2021-03-24 15:10:35,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:35,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:10:35,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:40,165 INFO L129 PetriNetUnfolder]: 4748/9026 cut-off events. [2021-03-24 15:10:40,165 INFO L130 PetriNetUnfolder]: For 50079/51344 co-relation queries the response was YES. [2021-03-24 15:10:40,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44698 conditions, 9026 events. 4748/9026 cut-off events. For 50079/51344 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 68622 event pairs, 152 based on Foata normal form. 65/8438 useless extension candidates. Maximal degree in co-relation 44463. Up to 6028 conditions per place. [2021-03-24 15:10:40,309 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 2926 selfloop transitions, 488 changer transitions 0/3440 dead transitions. [2021-03-24 15:10:40,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 870 places, 3440 transitions, 37676 flow [2021-03-24 15:10:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-24 15:10:40,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-03-24 15:10:40,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3017 transitions. [2021-03-24 15:10:40,313 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7029356943150047 [2021-03-24 15:10:40,313 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 3017 transitions. [2021-03-24 15:10:40,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 3017 transitions. [2021-03-24 15:10:40,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:40,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 3017 transitions. [2021-03-24 15:10:40,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 52.01724137931034) internal successors, (3017), 58 states have internal predecessors, (3017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:40,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 74.0) internal successors, (4366), 59 states have internal predecessors, (4366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:40,321 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 74.0) internal successors, (4366), 59 states have internal predecessors, (4366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:40,321 INFO L185 Difference]: Start difference. First operand has 813 places, 3253 transitions, 27896 flow. Second operand 58 states and 3017 transitions. [2021-03-24 15:10:40,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 870 places, 3440 transitions, 37676 flow [2021-03-24 15:10:41,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 869 places, 3440 transitions, 36001 flow, removed 836 selfloop flow, removed 1 redundant places. [2021-03-24 15:10:41,230 INFO L241 Difference]: Finished difference. Result has 885 places, 3392 transitions, 29621 flow [2021-03-24 15:10:41,232 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=26223, PETRI_DIFFERENCE_MINUEND_PLACES=812, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=364, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2884, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=29621, PETRI_PLACES=885, PETRI_TRANSITIONS=3392} [2021-03-24 15:10:41,232 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 824 predicate places. [2021-03-24 15:10:41,232 INFO L480 AbstractCegarLoop]: Abstraction has has 885 places, 3392 transitions, 29621 flow [2021-03-24 15:10:41,233 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) [2021-03-24 15:10:41,233 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:41,233 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] [2021-03-24 15:10:41,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 15:10:41,233 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]=== [2021-03-24 15:10:41,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:41,233 INFO L82 PathProgramCache]: Analyzing trace with hash -27612187, now seen corresponding path program 11 times [2021-03-24 15:10:41,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:41,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089085408] [2021-03-24 15:10:41,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:41,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:41,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:41,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:41,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:41,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:41,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:41,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:41,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:41,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:41,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:41,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:41,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:41,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:41,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:41,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:41,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:41,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:41,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:41,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:41,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:41,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:41,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:41,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:41,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:41,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:41,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:41,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:41,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:41,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:41,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:41,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:41,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:41,470 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:10:41,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:41,490 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 15:10:41,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:41,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089085408] [2021-03-24 15:10:41,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:41,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 15:10:41,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775046149] [2021-03-24 15:10:41,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 15:10:41,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:41,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 15:10:41,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-24 15:10:41,496 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:10:41,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 885 places, 3392 transitions, 29621 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) [2021-03-24 15:10:41,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:41,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:10:41,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:46,391 INFO L129 PetriNetUnfolder]: 4915/9387 cut-off events. [2021-03-24 15:10:46,391 INFO L130 PetriNetUnfolder]: For 70164/71436 co-relation queries the response was YES. [2021-03-24 15:10:46,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48040 conditions, 9387 events. 4915/9387 cut-off events. For 70164/71436 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 72441 event pairs, 146 based on Foata normal form. 83/8783 useless extension candidates. Maximal degree in co-relation 47781. Up to 6293 conditions per place. [2021-03-24 15:10:46,625 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 3063 selfloop transitions, 462 changer transitions 0/3551 dead transitions. [2021-03-24 15:10:46,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 925 places, 3551 transitions, 39296 flow [2021-03-24 15:10:46,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-24 15:10:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-03-24 15:10:46,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2142 transitions. [2021-03-24 15:10:46,628 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7059986816084377 [2021-03-24 15:10:46,629 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2142 transitions. [2021-03-24 15:10:46,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2142 transitions. [2021-03-24 15:10:46,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:46,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2142 transitions. [2021-03-24 15:10:46,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.24390243902439) internal successors, (2142), 41 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:46,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 74.0) internal successors, (3108), 42 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:46,634 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 74.0) internal successors, (3108), 42 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:46,635 INFO L185 Difference]: Start difference. First operand has 885 places, 3392 transitions, 29621 flow. Second operand 41 states and 2142 transitions. [2021-03-24 15:10:46,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 925 places, 3551 transitions, 39296 flow [2021-03-24 15:10:48,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 916 places, 3551 transitions, 37416 flow, removed 768 selfloop flow, removed 9 redundant places. [2021-03-24 15:10:48,251 INFO L241 Difference]: Finished difference. Result has 929 places, 3493 transitions, 30630 flow [2021-03-24 15:10:48,254 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=27895, PETRI_DIFFERENCE_MINUEND_PLACES=876, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=373, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3002, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=30630, PETRI_PLACES=929, PETRI_TRANSITIONS=3493} [2021-03-24 15:10:48,255 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 868 predicate places. [2021-03-24 15:10:48,255 INFO L480 AbstractCegarLoop]: Abstraction has has 929 places, 3493 transitions, 30630 flow [2021-03-24 15:10:48,255 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) [2021-03-24 15:10:48,255 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:48,255 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] [2021-03-24 15:10:48,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 15:10:48,256 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]=== [2021-03-24 15:10:48,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:48,256 INFO L82 PathProgramCache]: Analyzing trace with hash 2014047853, now seen corresponding path program 12 times [2021-03-24 15:10:48,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:48,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033177170] [2021-03-24 15:10:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:48,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:48,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:48,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:48,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:48,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:48,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:48,325 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 15:10:48,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:48,332 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-24 15:10:48,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:48,340 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-24 15:10:48,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 15:10:48,352 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-24 15:10:48,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 15:10:48,371 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-24 15:10:48,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-24 15:10:48,388 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-24 15:10:48,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-24 15:10:48,407 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-24 15:10:48,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-24 15:10:48,427 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-24 15:10:48,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-24 15:10:48,447 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-24 15:10:48,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-24 15:10:48,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:48,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:48,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:48,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:48,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:48,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:48,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:48,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:48,543 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:10:48,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:48,565 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 15:10:48,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:48,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033177170] [2021-03-24 15:10:48,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:48,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-24 15:10:48,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594020422] [2021-03-24 15:10:48,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-24 15:10:48,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:48,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-24 15:10:48,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-03-24 15:10:48,570 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:10:48,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 929 places, 3493 transitions, 30630 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) [2021-03-24 15:10:48,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:48,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:10:48,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:54,293 INFO L129 PetriNetUnfolder]: 5350/10162 cut-off events. [2021-03-24 15:10:54,293 INFO L130 PetriNetUnfolder]: For 91385/93025 co-relation queries the response was YES. [2021-03-24 15:10:54,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55717 conditions, 10162 events. 5350/10162 cut-off events. For 91385/93025 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 79149 event pairs, 279 based on Foata normal form. 41/9429 useless extension candidates. Maximal degree in co-relation 55438. Up to 6656 conditions per place. [2021-03-24 15:10:54,478 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 3305 selfloop transitions, 575 changer transitions 0/3906 dead transitions. [2021-03-24 15:10:54,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 980 places, 3906 transitions, 46118 flow [2021-03-24 15:10:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-24 15:10:54,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-03-24 15:10:54,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2785 transitions. [2021-03-24 15:10:54,486 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7237525987525988 [2021-03-24 15:10:54,486 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 2785 transitions. [2021-03-24 15:10:54,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 2785 transitions. [2021-03-24 15:10:54,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:54,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 2785 transitions. [2021-03-24 15:10:54,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 53.55769230769231) internal successors, (2785), 52 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:54,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 74.0) internal successors, (3922), 53 states have internal predecessors, (3922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:54,494 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 74.0) internal successors, (3922), 53 states have internal predecessors, (3922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:54,494 INFO L185 Difference]: Start difference. First operand has 929 places, 3493 transitions, 30630 flow. Second operand 52 states and 2785 transitions. [2021-03-24 15:10:54,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 980 places, 3906 transitions, 46118 flow [2021-03-24 15:10:56,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 970 places, 3906 transitions, 44762 flow, removed 439 selfloop flow, removed 10 redundant places. [2021-03-24 15:10:56,216 INFO L241 Difference]: Finished difference. Result has 997 places, 3816 transitions, 37093 flow [2021-03-24 15:10:56,218 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=29326, PETRI_DIFFERENCE_MINUEND_PLACES=919, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=37093, PETRI_PLACES=997, PETRI_TRANSITIONS=3816} [2021-03-24 15:10:56,218 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 936 predicate places. [2021-03-24 15:10:56,218 INFO L480 AbstractCegarLoop]: Abstraction has has 997 places, 3816 transitions, 37093 flow [2021-03-24 15:10:56,219 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) [2021-03-24 15:10:56,219 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:56,219 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] [2021-03-24 15:10:56,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 15:10:56,219 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]=== [2021-03-24 15:10:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:56,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1134746725, now seen corresponding path program 13 times [2021-03-24 15:10:56,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:56,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740071292] [2021-03-24 15:10:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:56,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:56,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:56,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:56,261 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 15:10:56,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:56,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:56,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:56,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:56,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:56,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:56,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:56,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:56,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:56,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:56,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:56,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:56,469 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:10:56,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:56,490 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:10:56,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:56,513 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-24 15:10:56,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:56,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:56,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740071292] [2021-03-24 15:10:56,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:56,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-24 15:10:56,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830640831] [2021-03-24 15:10:56,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-24 15:10:56,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:56,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-24 15:10:56,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-24 15:10:56,517 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:10:56,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 997 places, 3816 transitions, 37093 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) [2021-03-24 15:10:56,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:56,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:10:56,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:00,597 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-03-24 15:11:02,313 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2021-03-24 15:11:08,021 INFO L129 PetriNetUnfolder]: 6996/13120 cut-off events. [2021-03-24 15:11:08,021 INFO L130 PetriNetUnfolder]: For 216349/219198 co-relation queries the response was YES. [2021-03-24 15:11:08,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84132 conditions, 13120 events. 6996/13120 cut-off events. For 216349/219198 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 105720 event pairs, 184 based on Foata normal form. 470/12772 useless extension candidates. Maximal degree in co-relation 83811. Up to 7603 conditions per place. [2021-03-24 15:11:08,286 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 3384 selfloop transitions, 2241 changer transitions 0/5651 dead transitions. [2021-03-24 15:11:08,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1136 places, 5651 transitions, 75236 flow [2021-03-24 15:11:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-03-24 15:11:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2021-03-24 15:11:08,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 7480 transitions. [2021-03-24 15:11:08,291 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.722007722007722 [2021-03-24 15:11:08,291 INFO L72 ComplementDD]: Start complementDD. Operand 140 states and 7480 transitions. [2021-03-24 15:11:08,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 140 states and 7480 transitions. [2021-03-24 15:11:08,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:08,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 140 states and 7480 transitions. [2021-03-24 15:11:08,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 141 states, 140 states have (on average 53.42857142857143) internal successors, (7480), 140 states have internal predecessors, (7480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 141 states, 141 states have (on average 74.0) internal successors, (10434), 141 states have internal predecessors, (10434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,309 INFO L81 ComplementDD]: Finished complementDD. Result has 141 states, 141 states have (on average 74.0) internal successors, (10434), 141 states have internal predecessors, (10434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,309 INFO L185 Difference]: Start difference. First operand has 997 places, 3816 transitions, 37093 flow. Second operand 140 states and 7480 transitions. [2021-03-24 15:11:08,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1136 places, 5651 transitions, 75236 flow [2021-03-24 15:11:12,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1135 places, 5651 transitions, 73145 flow, removed 1044 selfloop flow, removed 1 redundant places. [2021-03-24 15:11:12,719 INFO L241 Difference]: Finished difference. Result has 1170 places, 5457 transitions, 67856 flow [2021-03-24 15:11:12,723 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=35062, PETRI_DIFFERENCE_MINUEND_PLACES=996, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3816, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=867, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=140, PETRI_FLOW=67856, PETRI_PLACES=1170, PETRI_TRANSITIONS=5457} [2021-03-24 15:11:12,723 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 1109 predicate places. [2021-03-24 15:11:12,723 INFO L480 AbstractCegarLoop]: Abstraction has has 1170 places, 5457 transitions, 67856 flow [2021-03-24 15:11:12,723 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) [2021-03-24 15:11:12,723 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:12,724 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] [2021-03-24 15:11:12,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 15:11:12,724 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]=== [2021-03-24 15:11:12,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:12,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1460329347, now seen corresponding path program 14 times [2021-03-24 15:11:12,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:12,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927433893] [2021-03-24 15:11:12,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:12,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:12,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:12,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:12,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:11:12,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:12,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:11:12,775 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 15:11:12,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:11:12,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:12,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:12,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:12,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:12,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:12,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:12,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:12,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:12,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:12,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:12,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:12,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:12,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:12,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:12,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:12,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:12,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:12,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:12,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:12,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:12,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:12,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:12,944 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:11:12,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:11:12,953 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:11:12,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:11:12,975 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-24 15:11:12,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:12,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927433893] [2021-03-24 15:11:12,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:12,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 15:11:12,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423867504] [2021-03-24 15:11:12,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 15:11:12,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:12,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 15:11:12,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-24 15:11:12,979 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:11:12,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1170 places, 5457 transitions, 67856 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) [2021-03-24 15:11:12,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:12,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:11:12,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:15,463 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2021-03-24 15:11:26,456 INFO L129 PetriNetUnfolder]: 8063/15042 cut-off events. [2021-03-24 15:11:26,456 INFO L130 PetriNetUnfolder]: For 315382/320337 co-relation queries the response was YES. [2021-03-24 15:11:26,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111904 conditions, 15042 events. 8063/15042 cut-off events. For 315382/320337 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 123249 event pairs, 203 based on Foata normal form. 401/14499 useless extension candidates. Maximal degree in co-relation 111531. Up to 9806 conditions per place. [2021-03-24 15:11:26,984 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 5045 selfloop transitions, 1449 changer transitions 0/6520 dead transitions. [2021-03-24 15:11:26,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1239 places, 6520 transitions, 109510 flow [2021-03-24 15:11:26,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-24 15:11:26,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-03-24 15:11:26,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 3774 transitions. [2021-03-24 15:11:26,988 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7285714285714285 [2021-03-24 15:11:26,988 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 3774 transitions. [2021-03-24 15:11:26,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 3774 transitions. [2021-03-24 15:11:26,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:26,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 3774 transitions. [2021-03-24 15:11:26,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 53.91428571428571) internal successors, (3774), 70 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:26,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 74.0) internal successors, (5254), 71 states have internal predecessors, (5254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:26,997 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 74.0) internal successors, (5254), 71 states have internal predecessors, (5254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:26,997 INFO L185 Difference]: Start difference. First operand has 1170 places, 5457 transitions, 67856 flow. Second operand 70 states and 3774 transitions. [2021-03-24 15:11:26,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1239 places, 6520 transitions, 109510 flow [2021-03-24 15:11:35,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1236 places, 6520 transitions, 78409 flow, removed 15530 selfloop flow, removed 3 redundant places. [2021-03-24 15:11:35,989 INFO L241 Difference]: Finished difference. Result has 1279 places, 6364 transitions, 69198 flow [2021-03-24 15:11:35,993 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=53171, PETRI_DIFFERENCE_MINUEND_PLACES=1167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=770, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=69198, PETRI_PLACES=1279, PETRI_TRANSITIONS=6364} [2021-03-24 15:11:35,993 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 1218 predicate places. [2021-03-24 15:11:35,993 INFO L480 AbstractCegarLoop]: Abstraction has has 1279 places, 6364 transitions, 69198 flow [2021-03-24 15:11:35,993 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) [2021-03-24 15:11:35,994 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:35,994 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] [2021-03-24 15:11:35,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 15:11:35,994 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]=== [2021-03-24 15:11:35,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:35,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1003436191, now seen corresponding path program 15 times [2021-03-24 15:11:35,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:35,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452304920] [2021-03-24 15:11:35,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:36,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:36,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:36,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:36,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:11:36,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:36,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:11:36,037 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 15:11:36,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:11:36,044 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-24 15:11:36,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:11:36,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:36,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:36,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:36,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:36,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:36,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:36,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:36,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:36,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:36,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:36,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:36,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:36,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:36,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:36,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:36,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:36,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:36,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:36,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:36,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:36,215 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:11:36,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:11:36,236 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:11:36,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:11:36,257 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-24 15:11:36,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:36,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452304920] [2021-03-24 15:11:36,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:36,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-24 15:11:36,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32108591] [2021-03-24 15:11:36,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-24 15:11:36,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:36,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-24 15:11:36,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-24 15:11:36,261 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:11:36,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1279 places, 6364 transitions, 69198 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) [2021-03-24 15:11:36,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:36,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:11:36,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:50,108 INFO L129 PetriNetUnfolder]: 8421/15727 cut-off events. [2021-03-24 15:11:50,109 INFO L130 PetriNetUnfolder]: For 217897/222711 co-relation queries the response was YES. [2021-03-24 15:11:50,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100365 conditions, 15727 events. 8421/15727 cut-off events. For 217897/222711 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 130243 event pairs, 243 based on Foata normal form. 145/14866 useless extension candidates. Maximal degree in co-relation 99947. Up to 10855 conditions per place. [2021-03-24 15:11:50,534 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 5983 selfloop transitions, 735 changer transitions 0/6744 dead transitions. [2021-03-24 15:11:50,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1348 places, 6744 transitions, 92451 flow [2021-03-24 15:11:50,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-24 15:11:50,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-03-24 15:11:50,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 3684 transitions. [2021-03-24 15:11:50,538 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7111969111969112 [2021-03-24 15:11:50,538 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 3684 transitions. [2021-03-24 15:11:50,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 3684 transitions. [2021-03-24 15:11:50,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:50,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 3684 transitions. [2021-03-24 15:11:50,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 52.628571428571426) internal successors, (3684), 70 states have internal predecessors, (3684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:50,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 74.0) internal successors, (5254), 71 states have internal predecessors, (5254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:50,547 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 74.0) internal successors, (5254), 71 states have internal predecessors, (5254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:50,547 INFO L185 Difference]: Start difference. First operand has 1279 places, 6364 transitions, 69198 flow. Second operand 70 states and 3684 transitions. [2021-03-24 15:11:50,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1348 places, 6744 transitions, 92451 flow [2021-03-24 15:11:57,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1347 places, 6744 transitions, 89058 flow, removed 1619 selfloop flow, removed 1 redundant places. [2021-03-24 15:11:57,312 INFO L241 Difference]: Finished difference. Result has 1376 places, 6688 transitions, 76377 flow [2021-03-24 15:11:57,318 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=65806, PETRI_DIFFERENCE_MINUEND_PLACES=1278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=445, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5846, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=76377, PETRI_PLACES=1376, PETRI_TRANSITIONS=6688} [2021-03-24 15:11:57,319 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 1315 predicate places. [2021-03-24 15:11:57,319 INFO L480 AbstractCegarLoop]: Abstraction has has 1376 places, 6688 transitions, 76377 flow [2021-03-24 15:11:57,319 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) [2021-03-24 15:11:57,319 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:57,319 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] [2021-03-24 15:11:57,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-24 15:11:57,319 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]=== [2021-03-24 15:11:57,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:57,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1097147873, now seen corresponding path program 16 times [2021-03-24 15:11:57,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:57,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143403481] [2021-03-24 15:11:57,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:57,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:57,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:57,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:57,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:11:57,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:57,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:11:57,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:57,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:57,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:57,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:57,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:57,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:57,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:57,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:57,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:57,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:57,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:57,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:57,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:57,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:57,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:57,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:57,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:57,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:57,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:57,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:57,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:57,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:57,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:57,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:57,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:57,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:11:57,616 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:11:57,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:11:57,643 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-24 15:11:57,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:11:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:57,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143403481] [2021-03-24 15:11:57,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:57,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-24 15:11:57,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206467331] [2021-03-24 15:11:57,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-24 15:11:57,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:57,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-24 15:11:57,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-24 15:11:57,648 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:11:57,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1376 places, 6688 transitions, 76377 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) [2021-03-24 15:11:57,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:57,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:11:57,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:59,919 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2021-03-24 15:12:01,406 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2021-03-24 15:12:14,882 INFO L129 PetriNetUnfolder]: 9040/16805 cut-off events. [2021-03-24 15:12:14,882 INFO L130 PetriNetUnfolder]: For 351740/357081 co-relation queries the response was YES. [2021-03-24 15:12:15,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116091 conditions, 16805 events. 9040/16805 cut-off events. For 351740/357081 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 140199 event pairs, 247 based on Foata normal form. 511/16272 useless extension candidates. Maximal degree in co-relation 115701. Up to 11367 conditions per place. [2021-03-24 15:12:15,375 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 6181 selfloop transitions, 1090 changer transitions 0/7297 dead transitions. [2021-03-24 15:12:15,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1476 places, 7297 transitions, 106470 flow [2021-03-24 15:12:15,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-03-24 15:12:15,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-03-24 15:12:15,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 5313 transitions. [2021-03-24 15:12:15,386 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7108643296762108 [2021-03-24 15:12:15,386 INFO L72 ComplementDD]: Start complementDD. Operand 101 states and 5313 transitions. [2021-03-24 15:12:15,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 5313 transitions. [2021-03-24 15:12:15,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:12:15,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 101 states and 5313 transitions. [2021-03-24 15:12:15,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 102 states, 101 states have (on average 52.603960396039604) internal successors, (5313), 101 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:12:15,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 102 states, 102 states have (on average 74.0) internal successors, (7548), 102 states have internal predecessors, (7548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:12:15,398 INFO L81 ComplementDD]: Finished complementDD. Result has 102 states, 102 states have (on average 74.0) internal successors, (7548), 102 states have internal predecessors, (7548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:12:15,398 INFO L185 Difference]: Start difference. First operand has 1376 places, 6688 transitions, 76377 flow. Second operand 101 states and 5313 transitions. [2021-03-24 15:12:15,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1476 places, 7297 transitions, 106470 flow [2021-03-24 15:12:25,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1474 places, 7297 transitions, 102141 flow, removed 2161 selfloop flow, removed 2 redundant places. [2021-03-24 15:12:25,839 INFO L241 Difference]: Finished difference. Result has 1502 places, 7218 transitions, 88040 flow [2021-03-24 15:12:25,844 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=72064, PETRI_DIFFERENCE_MINUEND_PLACES=1374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=616, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6020, PETRI_DIFFERENCE_SUBTRAHEND_STATES=101, PETRI_FLOW=88040, PETRI_PLACES=1502, PETRI_TRANSITIONS=7218} [2021-03-24 15:12:25,844 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 1441 predicate places. [2021-03-24 15:12:25,844 INFO L480 AbstractCegarLoop]: Abstraction has has 1502 places, 7218 transitions, 88040 flow [2021-03-24 15:12:25,844 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) [2021-03-24 15:12:25,844 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:12:25,844 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] [2021-03-24 15:12:25,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-24 15:12:25,844 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]=== [2021-03-24 15:12:25,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:12:25,845 INFO L82 PathProgramCache]: Analyzing trace with hash 239709457, now seen corresponding path program 17 times [2021-03-24 15:12:25,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:12:25,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843295764] [2021-03-24 15:12:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:12:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:12:25,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:25,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:12:25,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:25,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:12:25,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:25,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:12:25,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:25,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:12:25,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:25,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:12:25,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:25,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:12:25,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:25,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:12:25,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:25,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:12:25,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:25,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:12:25,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:25,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:12:25,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:25,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:12:25,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:25,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:12:25,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:25,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:12:25,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:25,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:12:26,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:26,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:12:26,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:26,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:12:26,042 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:12:26,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:12:26,055 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-24 15:12:26,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:12:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:12:26,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843295764] [2021-03-24 15:12:26,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:12:26,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-24 15:12:26,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50183311] [2021-03-24 15:12:26,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-24 15:12:26,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:12:26,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-24 15:12:26,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-03-24 15:12:26,059 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:12:26,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1502 places, 7218 transitions, 88040 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) [2021-03-24 15:12:26,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:12:26,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:12:26,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:12:32,856 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-03-24 15:12:43,707 INFO L129 PetriNetUnfolder]: 9346/17329 cut-off events. [2021-03-24 15:12:43,707 INFO L130 PetriNetUnfolder]: For 459427/464303 co-relation queries the response was YES. [2021-03-24 15:12:44,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125802 conditions, 17329 events. 9346/17329 cut-off events. For 459427/464303 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 145062 event pairs, 295 based on Foata normal form. 608/16846 useless extension candidates. Maximal degree in co-relation 125384. Up to 11887 conditions per place. [2021-03-24 15:12:44,339 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 6426 selfloop transitions, 1059 changer transitions 0/7511 dead transitions. [2021-03-24 15:12:44,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1564 places, 7511 transitions, 112534 flow [2021-03-24 15:12:44,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-03-24 15:12:44,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-03-24 15:12:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 3349 transitions. [2021-03-24 15:12:44,349 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7183612183612184 [2021-03-24 15:12:44,349 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 3349 transitions. [2021-03-24 15:12:44,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 3349 transitions. [2021-03-24 15:12:44,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:12:44,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 3349 transitions. [2021-03-24 15:12:44,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 53.15873015873016) internal successors, (3349), 63 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:12:44,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 74.0) internal successors, (4736), 64 states have internal predecessors, (4736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:12:44,358 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 74.0) internal successors, (4736), 64 states have internal predecessors, (4736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:12:44,358 INFO L185 Difference]: Start difference. First operand has 1502 places, 7218 transitions, 88040 flow. Second operand 63 states and 3349 transitions. [2021-03-24 15:12:44,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1564 places, 7511 transitions, 112534 flow [2021-03-24 15:12:57,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1553 places, 7511 transitions, 101979 flow, removed 4921 selfloop flow, removed 11 redundant places. [2021-03-24 15:12:58,067 INFO L241 Difference]: Finished difference. Result has 1570 places, 7431 transitions, 87405 flow [2021-03-24 15:12:58,072 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=80176, PETRI_DIFFERENCE_MINUEND_PLACES=1491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=867, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=87405, PETRI_PLACES=1570, PETRI_TRANSITIONS=7431} [2021-03-24 15:12:58,073 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 1509 predicate places. [2021-03-24 15:12:58,073 INFO L480 AbstractCegarLoop]: Abstraction has has 1570 places, 7431 transitions, 87405 flow [2021-03-24 15:12:58,073 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) [2021-03-24 15:12:58,073 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:12:58,073 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] [2021-03-24 15:12:58,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-24 15:12:58,073 INFO L428 AbstractCegarLoop]: === Iteration 20 === [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]=== [2021-03-24 15:12:58,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:12:58,074 INFO L82 PathProgramCache]: Analyzing trace with hash -843595743, now seen corresponding path program 18 times [2021-03-24 15:12:58,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:12:58,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978646442] [2021-03-24 15:12:58,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:12:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:12:58,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:58,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:12:58,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:58,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:12:58,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:58,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:12:58,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:58,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:12:58,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:58,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:12:58,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:58,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:12:58,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:58,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:12:58,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:58,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:12:58,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:58,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:12:58,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:58,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:12:58,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:58,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:12:58,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:58,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:12:58,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:58,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:12:58,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:58,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:12:58,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:12:58,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:12:58,306 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:12:58,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:12:58,329 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:12:58,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:12:58,355 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-24 15:12:58,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:12:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:12:58,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978646442] [2021-03-24 15:12:58,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:12:58,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 15:12:58,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658411125] [2021-03-24 15:12:58,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 15:12:58,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:12:58,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 15:12:58,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-24 15:12:58,360 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:12:58,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1570 places, 7431 transitions, 87405 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) [2021-03-24 15:12:58,360 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:12:58,360 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:12:58,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:13:16,715 INFO L129 PetriNetUnfolder]: 9523/17720 cut-off events. [2021-03-24 15:13:16,716 INFO L130 PetriNetUnfolder]: For 405190/409622 co-relation queries the response was YES. [2021-03-24 15:13:17,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124049 conditions, 17720 events. 9523/17720 cut-off events. For 405190/409622 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 149545 event pairs, 271 based on Foata normal form. 353/16960 useless extension candidates. Maximal degree in co-relation 123616. Up to 12434 conditions per place. [2021-03-24 15:13:17,809 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 6760 selfloop transitions, 903 changer transitions 0/7689 dead transitions. [2021-03-24 15:13:17,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1622 places, 7689 transitions, 108601 flow [2021-03-24 15:13:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-03-24 15:13:17,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-03-24 15:13:17,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2750 transitions. [2021-03-24 15:13:17,811 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7011728709841918 [2021-03-24 15:13:17,812 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2750 transitions. [2021-03-24 15:13:17,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2750 transitions. [2021-03-24 15:13:17,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:13:17,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2750 transitions. [2021-03-24 15:13:17,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 51.886792452830186) internal successors, (2750), 53 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:13:17,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 74.0) internal successors, (3996), 54 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:13:17,818 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 74.0) internal successors, (3996), 54 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:13:17,818 INFO L185 Difference]: Start difference. First operand has 1570 places, 7431 transitions, 87405 flow. Second operand 53 states and 2750 transitions. [2021-03-24 15:13:17,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1622 places, 7689 transitions, 108601 flow [2021-03-24 15:13:29,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1604 places, 7689 transitions, 106257 flow, removed 823 selfloop flow, removed 18 redundant places. [2021-03-24 15:13:30,083 INFO L241 Difference]: Finished difference. Result has 1619 places, 7658 transitions, 92865 flow [2021-03-24 15:13:30,089 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=85154, PETRI_DIFFERENCE_MINUEND_PLACES=1552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=690, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=92865, PETRI_PLACES=1619, PETRI_TRANSITIONS=7658} [2021-03-24 15:13:30,089 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 1558 predicate places. [2021-03-24 15:13:30,089 INFO L480 AbstractCegarLoop]: Abstraction has has 1619 places, 7658 transitions, 92865 flow [2021-03-24 15:13:30,090 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) [2021-03-24 15:13:30,090 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:13:30,090 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] [2021-03-24 15:13:30,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-24 15:13:30,090 INFO L428 AbstractCegarLoop]: === Iteration 21 === [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]=== [2021-03-24 15:13:30,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:13:30,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2086025171, now seen corresponding path program 19 times [2021-03-24 15:13:30,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:13:30,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092612082] [2021-03-24 15:13:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:13:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:13:30,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:13:30,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:13:30,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:13:30,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:13:30,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:13:30,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:13:30,128 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 15:13:30,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:13:30,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:13:30,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:13:30,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:13:30,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:13:30,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:13:30,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:13:30,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:13:30,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:13:30,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:13:30,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:13:30,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:13:30,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:13:30,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:13:30,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:13:30,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:13:30,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:13:30,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:13:30,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:13:30,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:13:30,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:13:30,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:13:30,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:13:30,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:13:30,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:13:30,343 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:13:30,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:13:30,369 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-24 15:13:30,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:13:30,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:13:30,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092612082] [2021-03-24 15:13:30,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:13:30,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 15:13:30,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972764827] [2021-03-24 15:13:30,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 15:13:30,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:13:30,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 15:13:30,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-24 15:13:30,374 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:13:30,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1619 places, 7658 transitions, 92865 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) [2021-03-24 15:13:30,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:13:30,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:13:30,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:13:32,548 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2021-03-24 15:13:54,361 INFO L129 PetriNetUnfolder]: 10865/20122 cut-off events. [2021-03-24 15:13:54,362 INFO L130 PetriNetUnfolder]: For 471895/476959 co-relation queries the response was YES. [2021-03-24 15:13:55,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143396 conditions, 20122 events. 10865/20122 cut-off events. For 471895/476959 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 172648 event pairs, 298 based on Foata normal form. 726/19592 useless extension candidates. Maximal degree in co-relation 142929. Up to 13180 conditions per place. [2021-03-24 15:13:55,665 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 7054 selfloop transitions, 2055 changer transitions 0/9135 dead transitions. [2021-03-24 15:13:55,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1698 places, 9135 transitions, 133222 flow [2021-03-24 15:13:55,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-03-24 15:13:55,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-03-24 15:13:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 4257 transitions. [2021-03-24 15:13:55,668 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7190878378378378 [2021-03-24 15:13:55,668 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 4257 transitions. [2021-03-24 15:13:55,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 4257 transitions. [2021-03-24 15:13:55,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:13:55,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 4257 transitions. [2021-03-24 15:13:55,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 53.2125) internal successors, (4257), 80 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:13:55,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 74.0) internal successors, (5994), 81 states have internal predecessors, (5994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:13:55,674 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 74.0) internal successors, (5994), 81 states have internal predecessors, (5994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:13:55,674 INFO L185 Difference]: Start difference. First operand has 1619 places, 7658 transitions, 92865 flow. Second operand 80 states and 4257 transitions. [2021-03-24 15:13:55,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1698 places, 9135 transitions, 133222 flow [2021-03-24 15:14:11,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1693 places, 9135 transitions, 129468 flow, removed 1662 selfloop flow, removed 5 redundant places. [2021-03-24 15:14:11,810 INFO L241 Difference]: Finished difference. Result has 1739 places, 8919 transitions, 115219 flow [2021-03-24 15:14:11,816 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=89111, PETRI_DIFFERENCE_MINUEND_PLACES=1614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1063, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=115219, PETRI_PLACES=1739, PETRI_TRANSITIONS=8919} [2021-03-24 15:14:11,816 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 1678 predicate places. [2021-03-24 15:14:11,816 INFO L480 AbstractCegarLoop]: Abstraction has has 1739 places, 8919 transitions, 115219 flow [2021-03-24 15:14:11,817 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) [2021-03-24 15:14:11,817 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:14:11,817 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] [2021-03-24 15:14:11,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-24 15:14:11,817 INFO L428 AbstractCegarLoop]: === Iteration 22 === [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]=== [2021-03-24 15:14:11,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:14:11,817 INFO L82 PathProgramCache]: Analyzing trace with hash -518488637, now seen corresponding path program 20 times [2021-03-24 15:14:11,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:14:11,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038606124] [2021-03-24 15:14:11,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:14:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:14:11,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:14:11,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:14:11,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:14:11,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:14:11,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:14:11,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:14:11,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:14:11,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:14:11,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:14:11,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:14:11,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:14:11,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:14:11,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:14:11,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:14:11,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:14:11,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:14:11,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:14:11,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:14:11,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:14:11,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:14:11,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:14:11,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:14:11,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:14:11,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:14:11,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:14:11,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:14:11,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:14:11,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:14:11,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:14:11,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:14:12,014 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:14:12,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:14:12,026 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:14:12,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:14:12,047 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-24 15:14:12,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:14:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:14:12,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038606124] [2021-03-24 15:14:12,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:14:12,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 15:14:12,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683431609] [2021-03-24 15:14:12,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 15:14:12,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:14:12,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 15:14:12,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-24 15:14:12,051 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:14:12,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1739 places, 8919 transitions, 115219 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) [2021-03-24 15:14:12,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:14:12,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:14:12,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:14:34,550 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-03-24 15:14:41,688 INFO L129 PetriNetUnfolder]: 11010/20467 cut-off events. [2021-03-24 15:14:41,688 INFO L130 PetriNetUnfolder]: For 516941/522912 co-relation queries the response was YES. [2021-03-24 15:14:42,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151399 conditions, 20467 events. 11010/20467 cut-off events. For 516941/522912 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 177098 event pairs, 302 based on Foata normal form. 539/19725 useless extension candidates. Maximal degree in co-relation 150897. Up to 14335 conditions per place. [2021-03-24 15:14:42,919 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 8062 selfloop transitions, 1019 changer transitions 0/9107 dead transitions. [2021-03-24 15:14:42,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1786 places, 9107 transitions, 138156 flow [2021-03-24 15:14:42,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-24 15:14:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-03-24 15:14:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2521 transitions. [2021-03-24 15:14:42,922 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.709740990990991 [2021-03-24 15:14:42,922 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2521 transitions. [2021-03-24 15:14:42,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2521 transitions. [2021-03-24 15:14:42,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:14:42,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2521 transitions. [2021-03-24 15:14:42,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 52.520833333333336) internal successors, (2521), 48 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:14:42,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 74.0) internal successors, (3626), 49 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:14:42,925 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 74.0) internal successors, (3626), 49 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:14:42,925 INFO L185 Difference]: Start difference. First operand has 1739 places, 8919 transitions, 115219 flow. Second operand 48 states and 2521 transitions. [2021-03-24 15:14:42,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1786 places, 9107 transitions, 138156 flow [2021-03-24 15:15:04,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1785 places, 9107 transitions, 131335 flow, removed 3409 selfloop flow, removed 1 redundant places. [2021-03-24 15:15:04,610 INFO L241 Difference]: Finished difference. Result has 1806 places, 9080 transitions, 115343 flow [2021-03-24 15:15:04,614 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=108416, PETRI_DIFFERENCE_MINUEND_PLACES=1738, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=886, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7987, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=115343, PETRI_PLACES=1806, PETRI_TRANSITIONS=9080} [2021-03-24 15:15:04,614 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 1745 predicate places. [2021-03-24 15:15:04,614 INFO L480 AbstractCegarLoop]: Abstraction has has 1806 places, 9080 transitions, 115343 flow [2021-03-24 15:15:04,615 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) [2021-03-24 15:15:04,615 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:15:04,615 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] [2021-03-24 15:15:04,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-24 15:15:04,615 INFO L428 AbstractCegarLoop]: === Iteration 23 === [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]=== [2021-03-24 15:15:04,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:15:04,615 INFO L82 PathProgramCache]: Analyzing trace with hash -2025804637, now seen corresponding path program 21 times [2021-03-24 15:15:04,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:15:04,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947494110] [2021-03-24 15:15:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:15:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:15:04,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:15:04,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:15:04,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:15:04,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:15:04,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:15:04,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:15:04,657 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 15:15:04,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:15:04,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:15:04,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:15:04,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:15:04,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:15:04,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:15:04,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:15:04,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:15:04,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:15:04,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:15:04,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:15:04,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:15:04,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:15:04,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:15:04,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:15:04,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:15:04,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:15:04,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:15:04,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:15:04,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:15:04,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:15:04,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:15:04,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:15:04,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:15:04,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:15:04,888 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:15:04,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:15:04,912 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-24 15:15:04,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:15:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:15:04,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947494110] [2021-03-24 15:15:04,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:15:04,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 15:15:04,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636726926] [2021-03-24 15:15:04,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 15:15:04,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:15:04,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 15:15:04,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-24 15:15:04,917 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:15:04,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1806 places, 9080 transitions, 115343 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) [2021-03-24 15:15:04,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:15:04,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:15:04,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:15:21,686 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-24 15:15:42,309 INFO L129 PetriNetUnfolder]: 11600/21506 cut-off events. [2021-03-24 15:15:42,309 INFO L130 PetriNetUnfolder]: For 629319/635535 co-relation queries the response was YES. [2021-03-24 15:15:43,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167137 conditions, 21506 events. 11600/21506 cut-off events. For 629319/635535 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 187105 event pairs, 289 based on Foata normal form. 659/20814 useless extension candidates. Maximal degree in co-relation 166635. Up to 14889 conditions per place. [2021-03-24 15:15:43,789 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 8515 selfloop transitions, 1096 changer transitions 0/9637 dead transitions. [2021-03-24 15:15:43,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1897 places, 9637 transitions, 155045 flow [2021-03-24 15:15:43,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-03-24 15:15:43,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-03-24 15:15:43,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 4890 transitions. [2021-03-24 15:15:43,792 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7182726204465335 [2021-03-24 15:15:43,792 INFO L72 ComplementDD]: Start complementDD. Operand 92 states and 4890 transitions. [2021-03-24 15:15:43,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 4890 transitions. [2021-03-24 15:15:43,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:15:43,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 92 states and 4890 transitions. [2021-03-24 15:15:43,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 93 states, 92 states have (on average 53.15217391304348) internal successors, (4890), 92 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:15:43,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 93 states, 93 states have (on average 74.0) internal successors, (6882), 93 states have internal predecessors, (6882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:15:43,812 INFO L81 ComplementDD]: Finished complementDD. Result has 93 states, 93 states have (on average 74.0) internal successors, (6882), 93 states have internal predecessors, (6882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:15:43,812 INFO L185 Difference]: Start difference. First operand has 1806 places, 9080 transitions, 115343 flow. Second operand 92 states and 4890 transitions. [2021-03-24 15:15:43,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1897 places, 9637 transitions, 155045 flow [2021-03-24 15:16:08,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1888 places, 9637 transitions, 151131 flow, removed 1642 selfloop flow, removed 9 redundant places. [2021-03-24 15:16:08,709 INFO L241 Difference]: Finished difference. Result has 1921 places, 9556 transitions, 132133 flow [2021-03-24 15:16:08,713 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=111429, PETRI_DIFFERENCE_MINUEND_PLACES=1797, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9080, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=689, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=92, PETRI_FLOW=132133, PETRI_PLACES=1921, PETRI_TRANSITIONS=9556} [2021-03-24 15:16:08,713 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 1860 predicate places. [2021-03-24 15:16:08,713 INFO L480 AbstractCegarLoop]: Abstraction has has 1921 places, 9556 transitions, 132133 flow [2021-03-24 15:16:08,713 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) [2021-03-24 15:16:08,713 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:16:08,713 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] [2021-03-24 15:16:08,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-24 15:16:08,714 INFO L428 AbstractCegarLoop]: === Iteration 24 === [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]=== [2021-03-24 15:16:08,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:16:08,714 INFO L82 PathProgramCache]: Analyzing trace with hash -2137788171, now seen corresponding path program 22 times [2021-03-24 15:16:08,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:16:08,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599752101] [2021-03-24 15:16:08,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:16:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:16:08,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:16:08,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:16:08,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:16:08,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:16:08,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:16:08,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:16:08,759 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 15:16:08,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:16:08,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:16:08,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:16:08,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:16:08,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:16:08,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:16:08,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:16:08,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:16:08,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:16:08,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:16:08,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:16:08,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:16:08,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:16:08,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:16:08,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:16:08,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:16:08,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:16:08,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:16:08,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:16:08,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:16:08,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:16:08,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:16:08,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:16:08,921 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:16:08,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:16:08,946 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:16:08,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:16:08,968 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-24 15:16:08,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:16:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:16:08,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599752101] [2021-03-24 15:16:08,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:16:08,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 15:16:08,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324777498] [2021-03-24 15:16:08,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 15:16:08,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:16:08,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 15:16:08,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-24 15:16:08,972 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:16:08,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1921 places, 9556 transitions, 132133 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) [2021-03-24 15:16:08,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:16:08,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:16:08,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:16:54,081 INFO L129 PetriNetUnfolder]: 13801/25320 cut-off events. [2021-03-24 15:16:54,081 INFO L130 PetriNetUnfolder]: For 940011/947680 co-relation queries the response was YES. [2021-03-24 15:16:56,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212427 conditions, 25320 events. 13801/25320 cut-off events. For 940011/947680 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 223073 event pairs, 358 based on Foata normal form. 1102/24852 useless extension candidates. Maximal degree in co-relation 211903. Up to 16134 conditions per place. [2021-03-24 15:16:56,326 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 8557 selfloop transitions, 3424 changer transitions 0/12007 dead transitions. [2021-03-24 15:16:56,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2014 places, 12007 transitions, 213346 flow [2021-03-24 15:16:56,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-03-24 15:16:56,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-03-24 15:16:56,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 5029 transitions. [2021-03-24 15:16:56,342 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.722972972972973 [2021-03-24 15:16:56,342 INFO L72 ComplementDD]: Start complementDD. Operand 94 states and 5029 transitions. [2021-03-24 15:16:56,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 5029 transitions. [2021-03-24 15:16:56,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:16:56,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 94 states and 5029 transitions. [2021-03-24 15:16:56,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 95 states, 94 states have (on average 53.5) internal successors, (5029), 94 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:16:56,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 95 states, 95 states have (on average 74.0) internal successors, (7030), 95 states have internal predecessors, (7030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:16:56,351 INFO L81 ComplementDD]: Finished complementDD. Result has 95 states, 95 states have (on average 74.0) internal successors, (7030), 95 states have internal predecessors, (7030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:16:56,351 INFO L185 Difference]: Start difference. First operand has 1921 places, 9556 transitions, 132133 flow. Second operand 94 states and 5029 transitions. [2021-03-24 15:16:56,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2014 places, 12007 transitions, 213346 flow [2021-03-24 15:17:38,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2010 places, 12007 transitions, 186637 flow, removed 13287 selfloop flow, removed 4 redundant places. [2021-03-24 15:17:38,358 INFO L241 Difference]: Finished difference. Result has 2076 places, 11695 transitions, 170302 flow [2021-03-24 15:17:38,363 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=119438, PETRI_DIFFERENCE_MINUEND_PLACES=1917, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1645, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=94, PETRI_FLOW=170302, PETRI_PLACES=2076, PETRI_TRANSITIONS=11695} [2021-03-24 15:17:38,363 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 2015 predicate places. [2021-03-24 15:17:38,363 INFO L480 AbstractCegarLoop]: Abstraction has has 2076 places, 11695 transitions, 170302 flow [2021-03-24 15:17:38,363 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) [2021-03-24 15:17:38,363 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:17:38,363 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] [2021-03-24 15:17:38,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-24 15:17:38,363 INFO L428 AbstractCegarLoop]: === Iteration 25 === [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]=== [2021-03-24 15:17:38,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:17:38,364 INFO L82 PathProgramCache]: Analyzing trace with hash -282501927, now seen corresponding path program 23 times [2021-03-24 15:17:38,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:17:38,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596385847] [2021-03-24 15:17:38,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:17:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:17:38,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:17:38,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:17:38,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:17:38,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:17:38,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:17:38,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:17:38,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:17:38,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:17:38,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:17:38,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:17:38,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:17:38,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:17:38,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:17:38,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:17:38,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:17:38,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:17:38,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:17:38,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:17:38,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:17:38,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:17:38,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:17:38,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:17:38,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:17:38,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:17:38,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:17:38,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:17:38,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:17:38,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:17:38,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:17:38,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:17:38,583 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:17:38,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:17:38,592 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:17:38,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:17:38,614 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-24 15:17:38,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:17:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:17:38,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596385847] [2021-03-24 15:17:38,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:17:38,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 15:17:38,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711033063] [2021-03-24 15:17:38,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 15:17:38,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:17:38,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 15:17:38,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-24 15:17:38,618 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:17:38,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2076 places, 11695 transitions, 170302 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) [2021-03-24 15:17:38,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:17:38,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:17:38,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:18:36,133 INFO L129 PetriNetUnfolder]: 14162/25972 cut-off events. [2021-03-24 15:18:36,133 INFO L130 PetriNetUnfolder]: For 1070621/1077394 co-relation queries the response was YES. [2021-03-24 15:18:39,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 219640 conditions, 25972 events. 14162/25972 cut-off events. For 1070621/1077394 co-relation queries the response was YES. Maximal size of possible extension queue 1140. Compared 229580 event pairs, 336 based on Foata normal form. 771/25184 useless extension candidates. Maximal degree in co-relation 219051. Up to 18240 conditions per place. [2021-03-24 15:18:39,663 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 10419 selfloop transitions, 1842 changer transitions 0/12287 dead transitions. [2021-03-24 15:18:39,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2126 places, 12287 transitions, 209809 flow [2021-03-24 15:18:39,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-24 15:18:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-03-24 15:18:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2725 transitions. [2021-03-24 15:18:39,666 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7220455749867515 [2021-03-24 15:18:39,666 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2725 transitions. [2021-03-24 15:18:39,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2725 transitions. [2021-03-24 15:18:39,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:18:39,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2725 transitions. [2021-03-24 15:18:39,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 53.431372549019606) internal successors, (2725), 51 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:18:39,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 74.0) internal successors, (3848), 52 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:18:39,670 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 74.0) internal successors, (3848), 52 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:18:39,670 INFO L185 Difference]: Start difference. First operand has 2076 places, 11695 transitions, 170302 flow. Second operand 51 states and 2725 transitions. [2021-03-24 15:18:39,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2126 places, 12287 transitions, 209809 flow [2021-03-24 15:19:23,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2124 places, 12287 transitions, 197811 flow, removed 5959 selfloop flow, removed 2 redundant places. [2021-03-24 15:19:23,293 INFO L241 Difference]: Finished difference. Result has 2144 places, 12173 transitions, 175542 flow [2021-03-24 15:19:23,296 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=159749, PETRI_DIFFERENCE_MINUEND_PLACES=2074, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1425, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=175542, PETRI_PLACES=2144, PETRI_TRANSITIONS=12173} [2021-03-24 15:19:23,296 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 2083 predicate places. [2021-03-24 15:19:23,296 INFO L480 AbstractCegarLoop]: Abstraction has has 2144 places, 12173 transitions, 175542 flow [2021-03-24 15:19:23,297 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) [2021-03-24 15:19:23,297 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:19:23,297 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] [2021-03-24 15:19:23,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-24 15:19:23,297 INFO L428 AbstractCegarLoop]: === Iteration 26 === [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]=== [2021-03-24 15:19:23,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:19:23,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1958050643, now seen corresponding path program 24 times [2021-03-24 15:19:23,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:19:23,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497466459] [2021-03-24 15:19:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:19:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:19:23,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:19:23,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:19:23,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:19:23,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:19:23,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:19:23,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:19:23,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:19:23,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:19:23,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:19:23,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:19:23,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:19:23,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:19:23,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:19:23,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:19:23,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:19:23,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:19:23,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:19:23,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:19:23,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:19:23,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:19:23,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:19:23,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:19:23,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:19:23,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:19:23,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:19:23,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:19:23,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:19:23,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:19:23,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:19:23,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:19:23,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:19:23,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:19:23,518 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:19:23,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:19:23,531 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-24 15:19:23,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:19:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:19:23,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497466459] [2021-03-24 15:19:23,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:19:23,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-24 15:19:23,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080713035] [2021-03-24 15:19:23,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-24 15:19:23,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:19:23,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-24 15:19:23,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-03-24 15:19:23,535 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:19:23,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2144 places, 12173 transitions, 175542 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) [2021-03-24 15:19:23,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:19:23,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:19:23,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:20:23,822 INFO L129 PetriNetUnfolder]: 14739/27005 cut-off events. [2021-03-24 15:20:23,822 INFO L130 PetriNetUnfolder]: For 1173467/1180302 co-relation queries the response was YES. [2021-03-24 15:20:28,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232591 conditions, 27005 events. 14739/27005 cut-off events. For 1173467/1180302 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 240791 event pairs, 331 based on Foata normal form. 882/26270 useless extension candidates. Maximal degree in co-relation 231961. Up to 18626 conditions per place. [2021-03-24 15:20:28,562 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 10868 selfloop transitions, 1835 changer transitions 7/12736 dead transitions. [2021-03-24 15:20:28,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2221 places, 12736 transitions, 218996 flow [2021-03-24 15:20:28,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-03-24 15:20:28,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-03-24 15:20:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 4144 transitions. [2021-03-24 15:20:28,565 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.717948717948718 [2021-03-24 15:20:28,565 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 4144 transitions. [2021-03-24 15:20:28,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 4144 transitions. [2021-03-24 15:20:28,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:20:28,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 4144 transitions. [2021-03-24 15:20:28,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 53.12820512820513) internal successors, (4144), 78 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:20:28,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 74.0) internal successors, (5846), 79 states have internal predecessors, (5846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:20:28,570 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 74.0) internal successors, (5846), 79 states have internal predecessors, (5846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:20:28,570 INFO L185 Difference]: Start difference. First operand has 2144 places, 12173 transitions, 175542 flow. Second operand 78 states and 4144 transitions. [2021-03-24 15:20:28,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2221 places, 12736 transitions, 218996 flow [2021-03-24 15:21:18,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2214 places, 12736 transitions, 215784 flow, removed 1392 selfloop flow, removed 7 redundant places. [2021-03-24 15:21:18,693 INFO L241 Difference]: Finished difference. Result has 2237 places, 12625 transitions, 190989 flow [2021-03-24 15:21:18,699 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=172394, PETRI_DIFFERENCE_MINUEND_PLACES=2137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1445, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=190989, PETRI_PLACES=2237, PETRI_TRANSITIONS=12625} [2021-03-24 15:21:18,700 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 2176 predicate places. [2021-03-24 15:21:18,700 INFO L480 AbstractCegarLoop]: Abstraction has has 2237 places, 12625 transitions, 190989 flow [2021-03-24 15:21:18,700 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) [2021-03-24 15:21:18,700 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:21:18,700 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] [2021-03-24 15:21:18,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-24 15:21:18,700 INFO L428 AbstractCegarLoop]: === Iteration 27 === [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]=== [2021-03-24 15:21:18,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:21:18,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1305892345, now seen corresponding path program 25 times [2021-03-24 15:21:18,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:21:18,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51315430] [2021-03-24 15:21:18,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:21:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:21:18,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:21:18,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:21:18,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:21:18,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:21:18,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:21:18,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:21:18,738 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 15:21:18,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:21:18,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:21:18,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:21:18,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:21:18,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:21:18,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:21:18,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:21:18,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:21:18,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:21:18,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:21:18,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:21:18,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:21:18,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:21:18,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:21:18,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:21:18,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:21:18,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:21:18,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:21:18,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:21:18,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:21:18,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:21:18,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:21:18,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:21:18,909 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:21:18,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:21:18,918 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:21:18,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:21:18,941 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-24 15:21:18,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:21:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:21:18,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51315430] [2021-03-24 15:21:18,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:21:18,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 15:21:18,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741717588] [2021-03-24 15:21:18,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 15:21:18,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:21:18,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 15:21:18,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-24 15:21:18,945 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 74 [2021-03-24 15:21:18,945 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2237 places, 12625 transitions, 190989 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) [2021-03-24 15:21:18,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:21:18,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 74 [2021-03-24 15:21:18,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:21:34,649 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2021-03-24 15:22:33,575 INFO L129 PetriNetUnfolder]: 16439/30074 cut-off events. [2021-03-24 15:22:33,575 INFO L130 PetriNetUnfolder]: For 1498935/1506743 co-relation queries the response was YES. [2021-03-24 15:22:38,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 281390 conditions, 30074 events. 16439/30074 cut-off events. For 1498935/1506743 co-relation queries the response was YES. Maximal size of possible extension queue 1449. Compared 272739 event pairs, 315 based on Foata normal form. 1912/30136 useless extension candidates. Maximal degree in co-relation 280734. Up to 17688 conditions per place. [2021-03-24 15:22:38,546 INFO L132 encePairwiseOnDemand]: 54/74 looper letters, 8397 selfloop transitions, 6150 changer transitions 0/14573 dead transitions. [2021-03-24 15:22:38,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2325 places, 14573 transitions, 276653 flow [2021-03-24 15:22:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-03-24 15:22:38,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-03-24 15:22:38,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 4922 transitions. [2021-03-24 15:22:38,549 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.722972972972973 [2021-03-24 15:22:38,549 INFO L72 ComplementDD]: Start complementDD. Operand 92 states and 4922 transitions. [2021-03-24 15:22:38,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 4922 transitions. [2021-03-24 15:22:38,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:22:38,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 92 states and 4922 transitions. [2021-03-24 15:22:38,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 93 states, 92 states have (on average 53.5) internal successors, (4922), 92 states have internal predecessors, (4922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:22:38,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 93 states, 93 states have (on average 74.0) internal successors, (6882), 93 states have internal predecessors, (6882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:22:38,555 INFO L81 ComplementDD]: Finished complementDD. Result has 93 states, 93 states have (on average 74.0) internal successors, (6882), 93 states have internal predecessors, (6882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:22:38,555 INFO L185 Difference]: Start difference. First operand has 2237 places, 12625 transitions, 190989 flow. Second operand 92 states and 4922 transitions. [2021-03-24 15:22:38,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2325 places, 14573 transitions, 276653 flow Received shutdown request... [2021-03-24 15:23:02,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-24 15:23:02,224 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-24 15:23:02,226 WARN L224 ceAbstractionStarter]: Timeout [2021-03-24 15:23:02,227 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 03:23:02 BasicIcfg [2021-03-24 15:23:02,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 15:23:02,227 INFO L168 Benchmark]: Toolchain (without parser) took 787510.42 ms. Allocated memory was 255.9 MB in the beginning and 12.4 GB in the end (delta: 12.2 GB). Free memory was 236.4 MB in the beginning and 4.8 GB in the end (delta: -4.5 GB). Peak memory consumption was 8.0 GB. Max. memory is 16.0 GB. [2021-03-24 15:23:02,227 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 93.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 15:23:02,228 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.61 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 15:23:02,228 INFO L168 Benchmark]: Boogie Preprocessor took 19.24 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 233.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 15:23:02,228 INFO L168 Benchmark]: RCFGBuilder took 309.12 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 236.6 MB in the end (delta: -2.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.0 GB. [2021-03-24 15:23:02,228 INFO L168 Benchmark]: TraceAbstraction took 787152.23 ms. Allocated memory was 255.9 MB in the beginning and 12.4 GB in the end (delta: 12.2 GB). Free memory was 236.1 MB in the beginning and 4.8 GB in the end (delta: -4.5 GB). Peak memory consumption was 8.0 GB. Max. memory is 16.0 GB. [2021-03-24 15:23:02,228 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 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 93.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.61 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.24 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 233.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 309.12 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 236.6 MB in the end (delta: -2.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 787152.23 ms. Allocated memory was 255.9 MB in the beginning and 12.4 GB in the end (delta: 12.2 GB). Free memory was 236.1 MB in the beginning and 4.8 GB in the end (delta: -4.5 GB). Peak memory consumption was 8.0 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 172.0ms, 66 PlacesBefore, 61 PlacesAfterwards, 51 TransitionsBefore, 46 TransitionsAfterwards, 1336 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 2462 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1044, positive: 966, positive conditional: 0, positive unconditional: 966, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 398, positive: 374, positive conditional: 0, positive unconditional: 374, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 398, positive: 374, positive conditional: 0, positive unconditional: 374, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1044, positive: 592, positive conditional: 0, positive unconditional: 592, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 398, unknown conditional: 0, unknown unconditional: 398] , Statistics on independence cache: Total cache size (in pairs): 250, Positive cache size: 234, Positive conditional cache size: 0, Positive unconditional cache size: 234, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 95). Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 33.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 787022.5ms, OverallIterations: 27, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 779587.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 312.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1245 SDtfs, 3818 SDslu, 2024 SDs, 0 SdLazy, 55928 SolverSat, 3719 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21162.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1946 GetRequests, 22 SyntacticMatches, 32 SemanticMatches, 1892 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57647 ImplicationChecksByTransitivity, 47967.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=190989occurred in iteration=26, InterpolantAutomatonStates: 1750, 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: 51.6ms SsaConstructionTime, 185.2ms SatisfiabilityAnalysisTime, 6632.8ms InterpolantComputationTime, 1134 NumberOfCodeBlocks, 1134 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1107 ConstructedInterpolants, 0 QuantifiedInterpolants, 13971 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 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