/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 00:01:19,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 00:01:19,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 00:01:19,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-25 00:01:19,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 00:01:19,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 00:01:19,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 00:01:19,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 00:01:19,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 00:01:19,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 00:01:19,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 00:01:19,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 00:01:19,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 00:01:19,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 00:01:19,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 00:01:19,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 00:01:19,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 00:01:19,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 00:01:19,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 00:01:19,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 00:01:19,276 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-SemanticLbe.epf [2021-03-25 00:01:19,310 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 00:01:19,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 00:01:19,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 00:01:19,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 00:01:19,314 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 00:01:19,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 00:01:19,314 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 00:01:19,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 00:01:19,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 00:01:19,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 00:01:19,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 00:01:19,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 00:01:19,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 00:01:19,316 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 00:01:19,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 00:01:19,316 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 00:01:19,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 00:01:19,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 00:01:19,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 00:01:19,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 00:01:19,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 00:01:19,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 00:01:19,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 00:01:19,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 00:01:19,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 00:01:19,317 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 00:01:19,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 00:01:19,317 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 00:01:19,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 00:01:19,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 00:01:19,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 00:01:19,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 00:01:19,619 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 00:01:19,619 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 00:01:19,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl [2021-03-25 00:01:19,621 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-03-25 00:01:19,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 00:01:19,645 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 00:01:19,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 00:01:19,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 00:01:19,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 00:01:19,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:19" (1/1) ... [2021-03-25 00:01:19,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:19" (1/1) ... [2021-03-25 00:01:19,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 00:01:19,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 00:01:19,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 00:01:19,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 00:01:19,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:19" (1/1) ... [2021-03-25 00:01:19,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:19" (1/1) ... [2021-03-25 00:01:19,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:19" (1/1) ... [2021-03-25 00:01:19,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:19" (1/1) ... [2021-03-25 00:01:19,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:19" (1/1) ... [2021-03-25 00:01:19,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:19" (1/1) ... [2021-03-25 00:01:19,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:19" (1/1) ... [2021-03-25 00:01:19,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 00:01:19,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 00:01:19,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 00:01:19,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 00:01:19,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:19" (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 [2021-03-25 00:01:19,761 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 00:01:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 00:01:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 00:01:19,763 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 00:01:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 00:01:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 00:01:19,763 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 00:01:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 00:01:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 00:01:19,764 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 00:01:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 00:01:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 00:01:19,765 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 00:01:20,012 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 00:01:20,013 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 00:01:20,014 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:01:20 BoogieIcfgContainer [2021-03-25 00:01:20,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 00:01:20,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 00:01:20,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 00:01:20,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 00:01:20,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:19" (1/2) ... [2021-03-25 00:01:20,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7a43eb and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 12:01:20, skipping insertion in model container [2021-03-25 00:01:20,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:01:20" (2/2) ... [2021-03-25 00:01:20,036 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-03-25 00:01:20,041 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 00:01:20,044 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 00:01:20,044 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 00:01:20,125 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-25 00:01:20,156 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 00:01:20,173 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 00:01:20,173 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 00:01:20,173 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 00:01:20,173 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 00:01:20,173 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 00:01:20,173 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 00:01:20,173 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 00:01:20,173 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 00:01:20,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 53 transitions, 130 flow [2021-03-25 00:01:20,216 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2021-03-25 00:01:20,217 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 00:01:20,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 0/50 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 00:01:20,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 53 transitions, 130 flow [2021-03-25 00:01:20,223 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 48 transitions, 114 flow [2021-03-25 00:01:20,224 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 00:01:20,243 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 48 transitions, 114 flow [2021-03-25 00:01:20,245 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 48 transitions, 114 flow [2021-03-25 00:01:20,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 48 transitions, 114 flow [2021-03-25 00:01:20,268 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-03-25 00:01:20,268 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 00:01:20,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 00:01:20,271 INFO L142 LiptonReduction]: Number of co-enabled transitions 1170 [2021-03-25 00:01:20,761 INFO L154 LiptonReduction]: Checked pairs total: 2728 [2021-03-25 00:01:20,761 INFO L156 LiptonReduction]: Total number of compositions: 10 [2021-03-25 00:01:20,765 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 542 [2021-03-25 00:01:20,804 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2021-03-25 00:01:20,804 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 00:01:20,804 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:20,805 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] [2021-03-25 00:01:20,805 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:20,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:20,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1589473928, now seen corresponding path program 1 times [2021-03-25 00:01:20,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:20,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647866816] [2021-03-25 00:01:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:20,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:20,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:20,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:20,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:20,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:20,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:20,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:20,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:20,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:20,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:21,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:21,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:21,019 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 00:01:21,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:21,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647866816] [2021-03-25 00:01:21,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:21,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:01:21,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677198348] [2021-03-25 00:01:21,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:01:21,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:21,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:01:21,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:01:21,053 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 63 [2021-03-25 00:01:21,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 94 flow. Second operand has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:21,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:21,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 63 [2021-03-25 00:01:21,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:21,261 INFO L129 PetriNetUnfolder]: 29/168 cut-off events. [2021-03-25 00:01:21,261 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-03-25 00:01:21,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 168 events. 29/168 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 852 event pairs, 3 based on Foata normal form. 1/168 useless extension candidates. Maximal degree in co-relation 249. Up to 28 conditions per place. [2021-03-25 00:01:21,265 INFO L132 encePairwiseOnDemand]: 55/63 looper letters, 21 selfloop transitions, 15 changer transitions 2/68 dead transitions. [2021-03-25 00:01:21,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 230 flow [2021-03-25 00:01:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 00:01:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 00:01:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2021-03-25 00:01:21,278 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8975468975468975 [2021-03-25 00:01:21,278 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2021-03-25 00:01:21,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2021-03-25 00:01:21,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:21,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2021-03-25 00:01:21,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.54545454545455) internal successors, (622), 11 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:21,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:21,293 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:21,294 INFO L185 Difference]: Start difference. First operand has 48 places, 38 transitions, 94 flow. Second operand 11 states and 622 transitions. [2021-03-25 00:01:21,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 230 flow [2021-03-25 00:01:21,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 218 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-25 00:01:21,300 INFO L241 Difference]: Finished difference. Result has 56 places, 54 transitions, 174 flow [2021-03-25 00:01:21,302 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=174, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2021-03-25 00:01:21,302 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 8 predicate places. [2021-03-25 00:01:21,302 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 174 flow [2021-03-25 00:01:21,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:21,303 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:21,303 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] [2021-03-25 00:01:21,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 00:01:21,303 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:21,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:21,304 INFO L82 PathProgramCache]: Analyzing trace with hash -748688888, now seen corresponding path program 2 times [2021-03-25 00:01:21,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:21,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630306816] [2021-03-25 00:01:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:21,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:21,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:21,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:21,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:01:21,416 INFO L142 QuantifierPusher]: treesize reduction 19, result has 57.8 percent of original size [2021-03-25 00:01:21,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 00:01:21,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:21,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:01:21,429 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-25 00:01:21,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:01:21,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:21,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:21,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:21,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:21,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:21,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:21,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630306816] [2021-03-25 00:01:21,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:21,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:01:21,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069508862] [2021-03-25 00:01:21,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:01:21,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:21,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:01:21,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:01:21,461 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:01:21,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:21,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:21,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:01:21,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:21,820 INFO L129 PetriNetUnfolder]: 865/1981 cut-off events. [2021-03-25 00:01:21,820 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2021-03-25 00:01:21,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3806 conditions, 1981 events. 865/1981 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13797 event pairs, 234 based on Foata normal form. 24/1915 useless extension candidates. Maximal degree in co-relation 3789. Up to 1085 conditions per place. [2021-03-25 00:01:21,840 INFO L132 encePairwiseOnDemand]: 54/63 looper letters, 51 selfloop transitions, 21 changer transitions 0/107 dead transitions. [2021-03-25 00:01:21,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 107 transitions, 424 flow [2021-03-25 00:01:21,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:01:21,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:01:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 345 transitions. [2021-03-25 00:01:21,843 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6845238095238095 [2021-03-25 00:01:21,843 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 345 transitions. [2021-03-25 00:01:21,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 345 transitions. [2021-03-25 00:01:21,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:21,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 345 transitions. [2021-03-25 00:01:21,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.125) internal successors, (345), 8 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:21,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:21,846 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:21,846 INFO L185 Difference]: Start difference. First operand has 56 places, 54 transitions, 174 flow. Second operand 8 states and 345 transitions. [2021-03-25 00:01:21,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 107 transitions, 424 flow [2021-03-25 00:01:21,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 107 transitions, 422 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 00:01:21,854 INFO L241 Difference]: Finished difference. Result has 64 places, 75 transitions, 298 flow [2021-03-25 00:01:21,854 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=298, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2021-03-25 00:01:21,855 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2021-03-25 00:01:21,855 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 298 flow [2021-03-25 00:01:21,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:21,855 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:21,855 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] [2021-03-25 00:01:21,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 00:01:21,856 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:21,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:21,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1341909162, now seen corresponding path program 3 times [2021-03-25 00:01:21,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:21,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39926181] [2021-03-25 00:01:21,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:21,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:21,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:21,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:21,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:21,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:21,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:21,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39926181] [2021-03-25 00:01:21,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:21,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 00:01:21,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554165663] [2021-03-25 00:01:21,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 00:01:21,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:21,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 00:01:21,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 00:01:21,898 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-03-25 00:01:21,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:21,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:21,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-03-25 00:01:21,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:21,944 INFO L129 PetriNetUnfolder]: 72/401 cut-off events. [2021-03-25 00:01:21,944 INFO L130 PetriNetUnfolder]: For 104/110 co-relation queries the response was YES. [2021-03-25 00:01:21,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 401 events. 72/401 cut-off events. For 104/110 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2611 event pairs, 19 based on Foata normal form. 19/406 useless extension candidates. Maximal degree in co-relation 739. Up to 60 conditions per place. [2021-03-25 00:01:21,948 INFO L132 encePairwiseOnDemand]: 59/63 looper letters, 3 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2021-03-25 00:01:21,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 320 flow [2021-03-25 00:01:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 00:01:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 00:01:21,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2021-03-25 00:01:21,949 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.91005291005291 [2021-03-25 00:01:21,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 172 transitions. [2021-03-25 00:01:21,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 172 transitions. [2021-03-25 00:01:21,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:21,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 172 transitions. [2021-03-25 00:01:21,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:21,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:21,951 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:21,951 INFO L185 Difference]: Start difference. First operand has 64 places, 75 transitions, 298 flow. Second operand 3 states and 172 transitions. [2021-03-25 00:01:21,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 320 flow [2021-03-25 00:01:21,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 00:01:21,954 INFO L241 Difference]: Finished difference. Result has 67 places, 75 transitions, 326 flow [2021-03-25 00:01:21,954 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=67, PETRI_TRANSITIONS=75} [2021-03-25 00:01:21,954 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 19 predicate places. [2021-03-25 00:01:21,955 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 75 transitions, 326 flow [2021-03-25 00:01:21,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:21,955 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:21,955 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:01:21,955 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 00:01:21,955 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:21,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:21,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1063808832, now seen corresponding path program 4 times [2021-03-25 00:01:21,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:21,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117171374] [2021-03-25 00:01:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:21,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:21,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:21,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:21,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:21,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:21,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:21,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117171374] [2021-03-25 00:01:21,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:21,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 00:01:21,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105277602] [2021-03-25 00:01:21,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 00:01:21,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:21,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 00:01:21,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 00:01:21,976 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-03-25 00:01:21,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 75 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:21,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:21,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-03-25 00:01:21,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:22,020 INFO L129 PetriNetUnfolder]: 81/459 cut-off events. [2021-03-25 00:01:22,020 INFO L130 PetriNetUnfolder]: For 206/209 co-relation queries the response was YES. [2021-03-25 00:01:22,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 459 events. 81/459 cut-off events. For 206/209 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3040 event pairs, 26 based on Foata normal form. 11/454 useless extension candidates. Maximal degree in co-relation 937. Up to 62 conditions per place. [2021-03-25 00:01:22,024 INFO L132 encePairwiseOnDemand]: 59/63 looper letters, 3 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2021-03-25 00:01:22,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 350 flow [2021-03-25 00:01:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 00:01:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 00:01:22,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2021-03-25 00:01:22,025 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.91005291005291 [2021-03-25 00:01:22,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 172 transitions. [2021-03-25 00:01:22,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 172 transitions. [2021-03-25 00:01:22,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:22,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 172 transitions. [2021-03-25 00:01:22,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:22,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:22,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:22,030 INFO L185 Difference]: Start difference. First operand has 67 places, 75 transitions, 326 flow. Second operand 3 states and 172 transitions. [2021-03-25 00:01:22,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 350 flow [2021-03-25 00:01:22,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:01:22,039 INFO L241 Difference]: Finished difference. Result has 68 places, 75 transitions, 341 flow [2021-03-25 00:01:22,039 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=68, PETRI_TRANSITIONS=75} [2021-03-25 00:01:22,040 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 20 predicate places. [2021-03-25 00:01:22,040 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 75 transitions, 341 flow [2021-03-25 00:01:22,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:22,040 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:22,040 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] [2021-03-25 00:01:22,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 00:01:22,040 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:22,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:22,041 INFO L82 PathProgramCache]: Analyzing trace with hash -2124262280, now seen corresponding path program 5 times [2021-03-25 00:01:22,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:22,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117339874] [2021-03-25 00:01:22,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:22,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:22,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:22,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:22,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:22,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:22,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:22,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:22,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:22,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:22,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:22,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:22,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:22,160 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 00:01:22,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:22,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117339874] [2021-03-25 00:01:22,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:22,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:01:22,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979691313] [2021-03-25 00:01:22,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:01:22,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:22,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:01:22,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:01:22,182 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 63 [2021-03-25 00:01:22,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 75 transitions, 341 flow. Second operand has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:22,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:22,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 63 [2021-03-25 00:01:22,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:22,411 INFO L129 PetriNetUnfolder]: 108/638 cut-off events. [2021-03-25 00:01:22,412 INFO L130 PetriNetUnfolder]: For 266/273 co-relation queries the response was YES. [2021-03-25 00:01:22,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1486 conditions, 638 events. 108/638 cut-off events. For 266/273 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4674 event pairs, 33 based on Foata normal form. 6/629 useless extension candidates. Maximal degree in co-relation 1367. Up to 81 conditions per place. [2021-03-25 00:01:22,416 INFO L132 encePairwiseOnDemand]: 55/63 looper letters, 30 selfloop transitions, 22 changer transitions 2/105 dead transitions. [2021-03-25 00:01:22,417 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 105 transitions, 568 flow [2021-03-25 00:01:22,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 00:01:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 00:01:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2021-03-25 00:01:22,419 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8975468975468975 [2021-03-25 00:01:22,419 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2021-03-25 00:01:22,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2021-03-25 00:01:22,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:22,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2021-03-25 00:01:22,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.54545454545455) internal successors, (622), 11 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:22,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:22,423 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:22,423 INFO L185 Difference]: Start difference. First operand has 68 places, 75 transitions, 341 flow. Second operand 11 states and 622 transitions. [2021-03-25 00:01:22,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 105 transitions, 568 flow [2021-03-25 00:01:22,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 105 transitions, 550 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:01:22,427 INFO L241 Difference]: Finished difference. Result has 81 places, 90 transitions, 479 flow [2021-03-25 00:01:22,427 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=479, PETRI_PLACES=81, PETRI_TRANSITIONS=90} [2021-03-25 00:01:22,428 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 33 predicate places. [2021-03-25 00:01:22,428 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 90 transitions, 479 flow [2021-03-25 00:01:22,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:22,428 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:22,428 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] [2021-03-25 00:01:22,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 00:01:22,428 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:22,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:22,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1715106346, now seen corresponding path program 6 times [2021-03-25 00:01:22,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:22,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279858194] [2021-03-25 00:01:22,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:22,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:22,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:01:22,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:22,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:22,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:22,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:22,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:22,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:22,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:22,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:22,537 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:01:22,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:22,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:22,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:22,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:22,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:22,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:22,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:22,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279858194] [2021-03-25 00:01:22,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:22,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:01:22,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953651782] [2021-03-25 00:01:22,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:01:22,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:22,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:01:22,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:01:22,582 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:01:22,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 90 transitions, 479 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:22,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:22,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:01:22,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:23,296 INFO L129 PetriNetUnfolder]: 1869/4449 cut-off events. [2021-03-25 00:01:23,297 INFO L130 PetriNetUnfolder]: For 2385/2432 co-relation queries the response was YES. [2021-03-25 00:01:23,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11646 conditions, 4449 events. 1869/4449 cut-off events. For 2385/2432 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 37388 event pairs, 452 based on Foata normal form. 36/4270 useless extension candidates. Maximal degree in co-relation 11603. Up to 1666 conditions per place. [2021-03-25 00:01:23,338 INFO L132 encePairwiseOnDemand]: 50/63 looper letters, 92 selfloop transitions, 63 changer transitions 0/205 dead transitions. [2021-03-25 00:01:23,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 205 transitions, 1179 flow [2021-03-25 00:01:23,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 00:01:23,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 00:01:23,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 500 transitions. [2021-03-25 00:01:23,340 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7215007215007215 [2021-03-25 00:01:23,341 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 500 transitions. [2021-03-25 00:01:23,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 500 transitions. [2021-03-25 00:01:23,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:23,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 500 transitions. [2021-03-25 00:01:23,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 45.45454545454545) internal successors, (500), 11 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:23,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:23,343 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:23,343 INFO L185 Difference]: Start difference. First operand has 81 places, 90 transitions, 479 flow. Second operand 11 states and 500 transitions. [2021-03-25 00:01:23,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 205 transitions, 1179 flow [2021-03-25 00:01:23,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 205 transitions, 1165 flow, removed 7 selfloop flow, removed 1 redundant places. [2021-03-25 00:01:23,365 INFO L241 Difference]: Finished difference. Result has 96 places, 141 transitions, 945 flow [2021-03-25 00:01:23,366 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=945, PETRI_PLACES=96, PETRI_TRANSITIONS=141} [2021-03-25 00:01:23,366 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 48 predicate places. [2021-03-25 00:01:23,366 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 141 transitions, 945 flow [2021-03-25 00:01:23,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:23,366 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:23,366 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] [2021-03-25 00:01:23,366 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 00:01:23,367 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:23,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:23,367 INFO L82 PathProgramCache]: Analyzing trace with hash -507622920, now seen corresponding path program 7 times [2021-03-25 00:01:23,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:23,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259098432] [2021-03-25 00:01:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:23,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:23,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:23,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:23,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:23,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:23,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:23,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:23,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:23,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:23,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:23,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:23,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:23,444 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 00:01:23,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:23,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:23,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259098432] [2021-03-25 00:01:23,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:23,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:01:23,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725961502] [2021-03-25 00:01:23,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:01:23,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:23,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:01:23,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:01:23,461 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 63 [2021-03-25 00:01:23,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 141 transitions, 945 flow. Second operand has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:23,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:23,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 63 [2021-03-25 00:01:23,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:23,892 INFO L129 PetriNetUnfolder]: 521/2138 cut-off events. [2021-03-25 00:01:23,892 INFO L130 PetriNetUnfolder]: For 2408/2486 co-relation queries the response was YES. [2021-03-25 00:01:23,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6738 conditions, 2138 events. 521/2138 cut-off events. For 2408/2486 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 20013 event pairs, 114 based on Foata normal form. 46/2090 useless extension candidates. Maximal degree in co-relation 6459. Up to 467 conditions per place. [2021-03-25 00:01:23,915 INFO L132 encePairwiseOnDemand]: 55/63 looper letters, 32 selfloop transitions, 31 changer transitions 0/165 dead transitions. [2021-03-25 00:01:23,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 165 transitions, 1199 flow [2021-03-25 00:01:23,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 00:01:23,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 00:01:23,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2021-03-25 00:01:23,917 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8975468975468975 [2021-03-25 00:01:23,917 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2021-03-25 00:01:23,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2021-03-25 00:01:23,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:23,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2021-03-25 00:01:23,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.54545454545455) internal successors, (622), 11 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:23,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:23,921 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:23,921 INFO L185 Difference]: Start difference. First operand has 96 places, 141 transitions, 945 flow. Second operand 11 states and 622 transitions. [2021-03-25 00:01:23,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 165 transitions, 1199 flow [2021-03-25 00:01:23,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 165 transitions, 1173 flow, removed 13 selfloop flow, removed 0 redundant places. [2021-03-25 00:01:23,949 INFO L241 Difference]: Finished difference. Result has 111 places, 153 transitions, 1100 flow [2021-03-25 00:01:23,949 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1100, PETRI_PLACES=111, PETRI_TRANSITIONS=153} [2021-03-25 00:01:23,949 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 63 predicate places. [2021-03-25 00:01:23,949 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 153 transitions, 1100 flow [2021-03-25 00:01:23,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:23,950 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:23,950 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] [2021-03-25 00:01:23,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 00:01:23,950 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:23,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:23,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1704214434, now seen corresponding path program 8 times [2021-03-25 00:01:23,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:23,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247503929] [2021-03-25 00:01:23,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:24,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:24,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:01:24,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:24,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:24,045 INFO L142 QuantifierPusher]: treesize reduction 20, result has 59.2 percent of original size [2021-03-25 00:01:24,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 00:01:24,052 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 00:01:24,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:01:24,064 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 00:01:24,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:01:24,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:24,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:01:24,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:24,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:01:24,090 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-25 00:01:24,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 00:01:24,107 INFO L142 QuantifierPusher]: treesize reduction 11, result has 72.5 percent of original size [2021-03-25 00:01:24,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 00:01:24,139 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 00:01:24,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 00:01:24,167 INFO L142 QuantifierPusher]: treesize reduction 36, result has 44.6 percent of original size [2021-03-25 00:01:24,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 00:01:24,197 INFO L142 QuantifierPusher]: treesize reduction 24, result has 36.8 percent of original size [2021-03-25 00:01:24,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:01:24,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:24,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:24,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247503929] [2021-03-25 00:01:24,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:24,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-25 00:01:24,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478514652] [2021-03-25 00:01:24,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 00:01:24,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:24,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 00:01:24,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-03-25 00:01:24,215 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:01:24,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 153 transitions, 1100 flow. Second operand has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:24,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:24,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:01:24,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:25,396 INFO L129 PetriNetUnfolder]: 2466/6236 cut-off events. [2021-03-25 00:01:25,396 INFO L130 PetriNetUnfolder]: For 11501/11687 co-relation queries the response was YES. [2021-03-25 00:01:25,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22040 conditions, 6236 events. 2466/6236 cut-off events. For 11501/11687 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 57431 event pairs, 474 based on Foata normal form. 51/6076 useless extension candidates. Maximal degree in co-relation 21767. Up to 2713 conditions per place. [2021-03-25 00:01:25,476 INFO L132 encePairwiseOnDemand]: 47/63 looper letters, 128 selfloop transitions, 83 changer transitions 0/273 dead transitions. [2021-03-25 00:01:25,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 273 transitions, 2206 flow [2021-03-25 00:01:25,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 00:01:25,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 00:01:25,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 482 transitions. [2021-03-25 00:01:25,478 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6955266955266955 [2021-03-25 00:01:25,478 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 482 transitions. [2021-03-25 00:01:25,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 482 transitions. [2021-03-25 00:01:25,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:25,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 482 transitions. [2021-03-25 00:01:25,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 43.81818181818182) internal successors, (482), 11 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:25,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:25,481 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:25,481 INFO L185 Difference]: Start difference. First operand has 111 places, 153 transitions, 1100 flow. Second operand 11 states and 482 transitions. [2021-03-25 00:01:25,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 273 transitions, 2206 flow [2021-03-25 00:01:25,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 273 transitions, 2177 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-03-25 00:01:25,596 INFO L241 Difference]: Finished difference. Result has 126 places, 217 transitions, 1840 flow [2021-03-25 00:01:25,597 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1840, PETRI_PLACES=126, PETRI_TRANSITIONS=217} [2021-03-25 00:01:25,597 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 78 predicate places. [2021-03-25 00:01:25,597 INFO L480 AbstractCegarLoop]: Abstraction has has 126 places, 217 transitions, 1840 flow [2021-03-25 00:01:25,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:25,598 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:25,598 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] [2021-03-25 00:01:25,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 00:01:25,598 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:25,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:25,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1405177400, now seen corresponding path program 9 times [2021-03-25 00:01:25,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:25,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879069104] [2021-03-25 00:01:25,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:25,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:25,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:25,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:25,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:25,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:25,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:25,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:25,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:25,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:25,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:25,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:25,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:25,662 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 00:01:25,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:25,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879069104] [2021-03-25 00:01:25,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:25,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:01:25,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138794345] [2021-03-25 00:01:25,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:01:25,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:25,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:01:25,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:01:25,676 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 63 [2021-03-25 00:01:25,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 217 transitions, 1840 flow. Second operand has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:25,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:25,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 63 [2021-03-25 00:01:25,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:26,355 INFO L129 PetriNetUnfolder]: 1399/4388 cut-off events. [2021-03-25 00:01:26,356 INFO L130 PetriNetUnfolder]: For 10907/11390 co-relation queries the response was YES. [2021-03-25 00:01:26,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18152 conditions, 4388 events. 1399/4388 cut-off events. For 10907/11390 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 43321 event pairs, 206 based on Foata normal form. 184/4366 useless extension candidates. Maximal degree in co-relation 17806. Up to 1028 conditions per place. [2021-03-25 00:01:26,417 INFO L132 encePairwiseOnDemand]: 55/63 looper letters, 40 selfloop transitions, 31 changer transitions 0/237 dead transitions. [2021-03-25 00:01:26,418 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 237 transitions, 2107 flow [2021-03-25 00:01:26,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 00:01:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 00:01:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2021-03-25 00:01:26,420 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8975468975468975 [2021-03-25 00:01:26,420 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2021-03-25 00:01:26,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2021-03-25 00:01:26,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:26,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2021-03-25 00:01:26,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.54545454545455) internal successors, (622), 11 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:26,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:26,423 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:26,423 INFO L185 Difference]: Start difference. First operand has 126 places, 217 transitions, 1840 flow. Second operand 11 states and 622 transitions. [2021-03-25 00:01:26,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 237 transitions, 2107 flow [2021-03-25 00:01:26,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 237 transitions, 2061 flow, removed 20 selfloop flow, removed 1 redundant places. [2021-03-25 00:01:26,540 INFO L241 Difference]: Finished difference. Result has 140 places, 228 transitions, 1981 flow [2021-03-25 00:01:26,540 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1981, PETRI_PLACES=140, PETRI_TRANSITIONS=228} [2021-03-25 00:01:26,540 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 92 predicate places. [2021-03-25 00:01:26,540 INFO L480 AbstractCegarLoop]: Abstraction has has 140 places, 228 transitions, 1981 flow [2021-03-25 00:01:26,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:26,541 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:26,541 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] [2021-03-25 00:01:26,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 00:01:26,541 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:26,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:26,542 INFO L82 PathProgramCache]: Analyzing trace with hash -875653954, now seen corresponding path program 10 times [2021-03-25 00:01:26,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:26,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767994658] [2021-03-25 00:01:26,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:26,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:26,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:01:26,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:26,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:26,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:26,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:01:26,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:26,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 00:01:26,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:26,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 00:01:26,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:26,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:01:26,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:26,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:01:26,687 INFO L142 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-03-25 00:01:26,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 00:01:26,709 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-03-25 00:01:26,710 INFO L147 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-03-25 00:01:26,730 INFO L142 QuantifierPusher]: treesize reduction 29, result has 42.0 percent of original size [2021-03-25 00:01:26,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:01:26,754 INFO L142 QuantifierPusher]: treesize reduction 34, result has 44.3 percent of original size [2021-03-25 00:01:26,754 INFO L147 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size 22 [2021-03-25 00:01:26,783 INFO L142 QuantifierPusher]: treesize reduction 23, result has 43.9 percent of original size [2021-03-25 00:01:26,783 INFO L147 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size 13 [2021-03-25 00:01:26,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:26,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:26,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767994658] [2021-03-25 00:01:26,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:26,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-25 00:01:26,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388200589] [2021-03-25 00:01:26,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-25 00:01:26,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:26,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-25 00:01:26,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-03-25 00:01:26,811 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:01:26,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 228 transitions, 1981 flow. Second operand has 13 states, 13 states have (on average 35.46153846153846) internal successors, (461), 13 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:26,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:26,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:01:26,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:28,088 INFO L129 PetriNetUnfolder]: 2783/7422 cut-off events. [2021-03-25 00:01:28,088 INFO L130 PetriNetUnfolder]: For 23812/24682 co-relation queries the response was YES. [2021-03-25 00:01:28,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31814 conditions, 7422 events. 2783/7422 cut-off events. For 23812/24682 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 72692 event pairs, 517 based on Foata normal form. 434/7635 useless extension candidates. Maximal degree in co-relation 31347. Up to 2869 conditions per place. [2021-03-25 00:01:28,149 INFO L132 encePairwiseOnDemand]: 50/63 looper letters, 141 selfloop transitions, 110 changer transitions 2/326 dead transitions. [2021-03-25 00:01:28,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 326 transitions, 3168 flow [2021-03-25 00:01:28,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-25 00:01:28,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-25 00:01:28,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 552 transitions. [2021-03-25 00:01:28,151 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.673992673992674 [2021-03-25 00:01:28,151 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 552 transitions. [2021-03-25 00:01:28,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 552 transitions. [2021-03-25 00:01:28,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:28,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 552 transitions. [2021-03-25 00:01:28,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 42.46153846153846) internal successors, (552), 13 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:28,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 63.0) internal successors, (882), 14 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:28,154 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 63.0) internal successors, (882), 14 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:28,154 INFO L185 Difference]: Start difference. First operand has 140 places, 228 transitions, 1981 flow. Second operand 13 states and 552 transitions. [2021-03-25 00:01:28,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 326 transitions, 3168 flow [2021-03-25 00:01:28,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 326 transitions, 3135 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-03-25 00:01:28,383 INFO L241 Difference]: Finished difference. Result has 157 places, 270 transitions, 2716 flow [2021-03-25 00:01:28,384 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2716, PETRI_PLACES=157, PETRI_TRANSITIONS=270} [2021-03-25 00:01:28,384 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 109 predicate places. [2021-03-25 00:01:28,384 INFO L480 AbstractCegarLoop]: Abstraction has has 157 places, 270 transitions, 2716 flow [2021-03-25 00:01:28,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 35.46153846153846) internal successors, (461), 13 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:28,384 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:28,384 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] [2021-03-25 00:01:28,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 00:01:28,385 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:28,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:28,385 INFO L82 PathProgramCache]: Analyzing trace with hash 432580618, now seen corresponding path program 11 times [2021-03-25 00:01:28,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:28,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79396043] [2021-03-25 00:01:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:28,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:28,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:28,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:28,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:28,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:28,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:28,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:28,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:28,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:28,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:28,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:28,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:28,468 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 00:01:28,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:28,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:28,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79396043] [2021-03-25 00:01:28,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:28,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:01:28,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011106113] [2021-03-25 00:01:28,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:01:28,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:28,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:01:28,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:01:28,484 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 63 [2021-03-25 00:01:28,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 270 transitions, 2716 flow. Second operand has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:28,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:28,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 63 [2021-03-25 00:01:28,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:29,404 INFO L129 PetriNetUnfolder]: 1499/5044 cut-off events. [2021-03-25 00:01:29,404 INFO L130 PetriNetUnfolder]: For 19768/20523 co-relation queries the response was YES. [2021-03-25 00:01:29,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23990 conditions, 5044 events. 1499/5044 cut-off events. For 19768/20523 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 52693 event pairs, 184 based on Foata normal form. 300/5134 useless extension candidates. Maximal degree in co-relation 23406. Up to 1189 conditions per place. [2021-03-25 00:01:29,458 INFO L132 encePairwiseOnDemand]: 55/63 looper letters, 50 selfloop transitions, 39 changer transitions 0/297 dead transitions. [2021-03-25 00:01:29,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 297 transitions, 3114 flow [2021-03-25 00:01:29,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 00:01:29,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 00:01:29,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2021-03-25 00:01:29,461 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8975468975468975 [2021-03-25 00:01:29,461 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2021-03-25 00:01:29,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2021-03-25 00:01:29,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:29,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2021-03-25 00:01:29,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.54545454545455) internal successors, (622), 11 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:29,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:29,464 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:29,464 INFO L185 Difference]: Start difference. First operand has 157 places, 270 transitions, 2716 flow. Second operand 11 states and 622 transitions. [2021-03-25 00:01:29,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 297 transitions, 3114 flow [2021-03-25 00:01:29,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 297 transitions, 3028 flow, removed 36 selfloop flow, removed 1 redundant places. [2021-03-25 00:01:29,663 INFO L241 Difference]: Finished difference. Result has 169 places, 284 transitions, 2867 flow [2021-03-25 00:01:29,663 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=2630, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2867, PETRI_PLACES=169, PETRI_TRANSITIONS=284} [2021-03-25 00:01:29,663 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 121 predicate places. [2021-03-25 00:01:29,663 INFO L480 AbstractCegarLoop]: Abstraction has has 169 places, 284 transitions, 2867 flow [2021-03-25 00:01:29,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:29,664 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:29,664 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] [2021-03-25 00:01:29,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 00:01:29,664 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:29,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:29,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1100407820, now seen corresponding path program 12 times [2021-03-25 00:01:29,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:29,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608702000] [2021-03-25 00:01:29,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:29,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:29,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 00:01:29,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:29,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 00:01:29,748 INFO L142 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-03-25 00:01:29,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:29,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:29,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:29,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:29,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:29,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:29,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:01:29,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:29,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 00:01:29,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:29,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 00:01:29,807 INFO L142 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size [2021-03-25 00:01:29,808 INFO L147 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size 21 [2021-03-25 00:01:29,872 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-03-25 00:01:29,872 INFO L147 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size 17 [2021-03-25 00:01:29,895 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-03-25 00:01:29,897 INFO L147 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size 15 [2021-03-25 00:01:29,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:29,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:29,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:29,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:29,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608702000] [2021-03-25 00:01:29,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:29,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:01:29,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281392344] [2021-03-25 00:01:29,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:01:29,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:29,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:01:29,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:01:29,926 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:01:29,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 284 transitions, 2867 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:29,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:29,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:01:29,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:31,232 INFO L129 PetriNetUnfolder]: 2934/7909 cut-off events. [2021-03-25 00:01:31,232 INFO L130 PetriNetUnfolder]: For 38078/39350 co-relation queries the response was YES. [2021-03-25 00:01:31,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38524 conditions, 7909 events. 2934/7909 cut-off events. For 38078/39350 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 79228 event pairs, 727 based on Foata normal form. 189/7871 useless extension candidates. Maximal degree in co-relation 37971. Up to 4639 conditions per place. [2021-03-25 00:01:31,314 INFO L132 encePairwiseOnDemand]: 48/63 looper letters, 207 selfloop transitions, 51 changer transitions 1/346 dead transitions. [2021-03-25 00:01:31,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 346 transitions, 3947 flow [2021-03-25 00:01:31,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 00:01:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 00:01:31,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 453 transitions. [2021-03-25 00:01:31,317 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6536796536796536 [2021-03-25 00:01:31,317 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 453 transitions. [2021-03-25 00:01:31,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 453 transitions. [2021-03-25 00:01:31,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:31,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 453 transitions. [2021-03-25 00:01:31,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 41.18181818181818) internal successors, (453), 11 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:31,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:31,325 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:31,325 INFO L185 Difference]: Start difference. First operand has 169 places, 284 transitions, 2867 flow. Second operand 11 states and 453 transitions. [2021-03-25 00:01:31,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 346 transitions, 3947 flow [2021-03-25 00:01:31,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 346 transitions, 3823 flow, removed 28 selfloop flow, removed 9 redundant places. [2021-03-25 00:01:31,706 INFO L241 Difference]: Finished difference. Result has 177 places, 318 transitions, 3357 flow [2021-03-25 00:01:31,707 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=2743, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3357, PETRI_PLACES=177, PETRI_TRANSITIONS=318} [2021-03-25 00:01:31,707 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 129 predicate places. [2021-03-25 00:01:31,707 INFO L480 AbstractCegarLoop]: Abstraction has has 177 places, 318 transitions, 3357 flow [2021-03-25 00:01:31,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:31,707 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:31,708 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:01:31,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 00:01:31,708 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:31,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:31,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1656964118, now seen corresponding path program 13 times [2021-03-25 00:01:31,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:31,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863769653] [2021-03-25 00:01:31,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:31,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:31,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:31,785 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-03-25 00:01:31,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:31,790 INFO L142 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-03-25 00:01:31,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:31,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:31,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:31,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:31,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:31,805 INFO L142 QuantifierPusher]: treesize reduction 9, result has 60.9 percent of original size [2021-03-25 00:01:31,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:01:31,813 INFO L142 QuantifierPusher]: treesize reduction 19, result has 38.7 percent of original size [2021-03-25 00:01:31,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:01:31,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:31,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:31,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863769653] [2021-03-25 00:01:31,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:31,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:01:31,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273372449] [2021-03-25 00:01:31,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:01:31,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:31,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:01:31,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:01:31,825 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:01:31,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 318 transitions, 3357 flow. Second operand has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:31,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:31,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:01:31,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:32,598 INFO L129 PetriNetUnfolder]: 1855/4938 cut-off events. [2021-03-25 00:01:32,599 INFO L130 PetriNetUnfolder]: For 25458/25805 co-relation queries the response was YES. [2021-03-25 00:01:32,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23107 conditions, 4938 events. 1855/4938 cut-off events. For 25458/25805 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 44867 event pairs, 636 based on Foata normal form. 133/4866 useless extension candidates. Maximal degree in co-relation 22891. Up to 2690 conditions per place. [2021-03-25 00:01:32,639 INFO L132 encePairwiseOnDemand]: 51/63 looper letters, 162 selfloop transitions, 73 changer transitions 2/324 dead transitions. [2021-03-25 00:01:32,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 324 transitions, 3753 flow [2021-03-25 00:01:32,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:01:32,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:01:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-25 00:01:32,641 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6938775510204082 [2021-03-25 00:01:32,641 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-25 00:01:32,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-25 00:01:32,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:32,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-25 00:01:32,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:32,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:32,643 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:32,643 INFO L185 Difference]: Start difference. First operand has 177 places, 318 transitions, 3357 flow. Second operand 7 states and 306 transitions. [2021-03-25 00:01:32,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 324 transitions, 3753 flow [2021-03-25 00:01:32,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 324 transitions, 3700 flow, removed 23 selfloop flow, removed 2 redundant places. [2021-03-25 00:01:32,732 INFO L241 Difference]: Finished difference. Result has 181 places, 290 transitions, 3228 flow [2021-03-25 00:01:32,732 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=2803, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3228, PETRI_PLACES=181, PETRI_TRANSITIONS=290} [2021-03-25 00:01:32,732 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 133 predicate places. [2021-03-25 00:01:32,732 INFO L480 AbstractCegarLoop]: Abstraction has has 181 places, 290 transitions, 3228 flow [2021-03-25 00:01:32,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:32,733 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:32,733 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] [2021-03-25 00:01:32,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 00:01:32,733 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:32,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:32,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1899290338, now seen corresponding path program 14 times [2021-03-25 00:01:32,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:32,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024273203] [2021-03-25 00:01:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:32,758 INFO L142 QuantifierPusher]: treesize reduction 20, result has 63.6 percent of original size [2021-03-25 00:01:32,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-25 00:01:32,780 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-25 00:01:32,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:01:32,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:32,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:32,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:32,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:01:32,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:32,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:32,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:32,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:32,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:32,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:32,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:32,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:32,836 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-25 00:01:32,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:32,843 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-03-25 00:01:32,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:01:32,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:32,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:32,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024273203] [2021-03-25 00:01:32,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:32,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:01:32,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266178457] [2021-03-25 00:01:32,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:01:32,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:32,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:01:32,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:01:32,857 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:01:32,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 290 transitions, 3228 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:32,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:32,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:01:32,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:34,234 INFO L129 PetriNetUnfolder]: 2801/6998 cut-off events. [2021-03-25 00:01:34,234 INFO L130 PetriNetUnfolder]: For 43464/44171 co-relation queries the response was YES. [2021-03-25 00:01:34,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34714 conditions, 6998 events. 2801/6998 cut-off events. For 43464/44171 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 65603 event pairs, 410 based on Foata normal form. 269/7012 useless extension candidates. Maximal degree in co-relation 34461. Up to 2887 conditions per place. [2021-03-25 00:01:34,286 INFO L132 encePairwiseOnDemand]: 46/63 looper letters, 218 selfloop transitions, 225 changer transitions 20/550 dead transitions. [2021-03-25 00:01:34,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 550 transitions, 6736 flow [2021-03-25 00:01:34,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-25 00:01:34,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-03-25 00:01:34,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 851 transitions. [2021-03-25 00:01:34,290 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6753968253968254 [2021-03-25 00:01:34,290 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 851 transitions. [2021-03-25 00:01:34,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 851 transitions. [2021-03-25 00:01:34,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:34,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 851 transitions. [2021-03-25 00:01:34,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 42.55) internal successors, (851), 20 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:34,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 63.0) internal successors, (1323), 21 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:34,294 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 63.0) internal successors, (1323), 21 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:34,294 INFO L185 Difference]: Start difference. First operand has 181 places, 290 transitions, 3228 flow. Second operand 20 states and 851 transitions. [2021-03-25 00:01:34,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 550 transitions, 6736 flow [2021-03-25 00:01:34,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 550 transitions, 6686 flow, removed 20 selfloop flow, removed 2 redundant places. [2021-03-25 00:01:34,453 INFO L241 Difference]: Finished difference. Result has 210 places, 429 transitions, 5421 flow [2021-03-25 00:01:34,453 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3190, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5421, PETRI_PLACES=210, PETRI_TRANSITIONS=429} [2021-03-25 00:01:34,453 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 162 predicate places. [2021-03-25 00:01:34,453 INFO L480 AbstractCegarLoop]: Abstraction has has 210 places, 429 transitions, 5421 flow [2021-03-25 00:01:34,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:34,453 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:34,453 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] [2021-03-25 00:01:34,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 00:01:34,454 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:34,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:34,454 INFO L82 PathProgramCache]: Analyzing trace with hash -47314558, now seen corresponding path program 15 times [2021-03-25 00:01:34,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:34,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3410634] [2021-03-25 00:01:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:34,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:34,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:34,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:34,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:34,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:34,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:34,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:34,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:34,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:34,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:34,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:34,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:34,528 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 00:01:34,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:34,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3410634] [2021-03-25 00:01:34,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:34,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:01:34,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954579401] [2021-03-25 00:01:34,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:01:34,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:34,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:01:34,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:01:34,621 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 63 [2021-03-25 00:01:34,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 429 transitions, 5421 flow. Second operand has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:34,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:34,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 63 [2021-03-25 00:01:34,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:35,501 INFO L129 PetriNetUnfolder]: 1538/5127 cut-off events. [2021-03-25 00:01:35,501 INFO L130 PetriNetUnfolder]: For 35116/36081 co-relation queries the response was YES. [2021-03-25 00:01:35,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27444 conditions, 5127 events. 1538/5127 cut-off events. For 35116/36081 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 53051 event pairs, 303 based on Foata normal form. 251/5056 useless extension candidates. Maximal degree in co-relation 27176. Up to 1060 conditions per place. [2021-03-25 00:01:35,629 INFO L132 encePairwiseOnDemand]: 55/63 looper letters, 50 selfloop transitions, 41 changer transitions 14/444 dead transitions. [2021-03-25 00:01:35,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 444 transitions, 5718 flow [2021-03-25 00:01:35,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 00:01:35,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 00:01:35,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2021-03-25 00:01:35,631 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8975468975468975 [2021-03-25 00:01:35,631 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2021-03-25 00:01:35,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2021-03-25 00:01:35,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:35,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2021-03-25 00:01:35,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.54545454545455) internal successors, (622), 11 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:35,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:35,633 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:35,633 INFO L185 Difference]: Start difference. First operand has 210 places, 429 transitions, 5421 flow. Second operand 11 states and 622 transitions. [2021-03-25 00:01:35,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 444 transitions, 5718 flow [2021-03-25 00:01:35,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 444 transitions, 5462 flow, removed 116 selfloop flow, removed 4 redundant places. [2021-03-25 00:01:35,814 INFO L241 Difference]: Finished difference. Result has 216 places, 417 transitions, 5036 flow [2021-03-25 00:01:35,815 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=5165, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5036, PETRI_PLACES=216, PETRI_TRANSITIONS=417} [2021-03-25 00:01:35,815 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 168 predicate places. [2021-03-25 00:01:35,815 INFO L480 AbstractCegarLoop]: Abstraction has has 216 places, 417 transitions, 5036 flow [2021-03-25 00:01:35,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:35,815 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:35,815 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] [2021-03-25 00:01:35,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 00:01:35,816 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:35,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:35,816 INFO L82 PathProgramCache]: Analyzing trace with hash 978606294, now seen corresponding path program 16 times [2021-03-25 00:01:35,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:35,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318455774] [2021-03-25 00:01:35,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:35,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:35,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:01:35,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:35,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:35,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:35,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:35,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:35,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:01:35,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:35,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:35,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:35,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:35,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:35,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:35,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:35,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:35,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:35,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:35,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318455774] [2021-03-25 00:01:35,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:35,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:01:35,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788746571] [2021-03-25 00:01:35,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:01:35,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:35,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:01:35,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:01:35,899 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:01:35,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 417 transitions, 5036 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:35,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:35,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:01:35,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:37,303 INFO L129 PetriNetUnfolder]: 3068/7791 cut-off events. [2021-03-25 00:01:37,304 INFO L130 PetriNetUnfolder]: For 71115/72060 co-relation queries the response was YES. [2021-03-25 00:01:37,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45532 conditions, 7791 events. 3068/7791 cut-off events. For 71115/72060 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 75077 event pairs, 340 based on Foata normal form. 397/7940 useless extension candidates. Maximal degree in co-relation 45135. Up to 1650 conditions per place. [2021-03-25 00:01:37,375 INFO L132 encePairwiseOnDemand]: 47/63 looper letters, 231 selfloop transitions, 262 changer transitions 29/611 dead transitions. [2021-03-25 00:01:37,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 611 transitions, 8359 flow [2021-03-25 00:01:37,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 00:01:37,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 00:01:37,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 535 transitions. [2021-03-25 00:01:37,376 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7076719576719577 [2021-03-25 00:01:37,376 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 535 transitions. [2021-03-25 00:01:37,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 535 transitions. [2021-03-25 00:01:37,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:37,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 535 transitions. [2021-03-25 00:01:37,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 44.583333333333336) internal successors, (535), 12 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:37,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:37,379 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:37,379 INFO L185 Difference]: Start difference. First operand has 216 places, 417 transitions, 5036 flow. Second operand 12 states and 535 transitions. [2021-03-25 00:01:37,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 611 transitions, 8359 flow [2021-03-25 00:01:37,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 611 transitions, 8164 flow, removed 32 selfloop flow, removed 12 redundant places. [2021-03-25 00:01:37,651 INFO L241 Difference]: Finished difference. Result has 222 places, 481 transitions, 6812 flow [2021-03-25 00:01:37,651 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=4626, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6812, PETRI_PLACES=222, PETRI_TRANSITIONS=481} [2021-03-25 00:01:37,651 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 174 predicate places. [2021-03-25 00:01:37,651 INFO L480 AbstractCegarLoop]: Abstraction has has 222 places, 481 transitions, 6812 flow [2021-03-25 00:01:37,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:37,652 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:37,652 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:01:37,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 00:01:37,652 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:37,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:37,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1105234534, now seen corresponding path program 17 times [2021-03-25 00:01:37,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:37,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082405139] [2021-03-25 00:01:37,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:37,674 INFO L142 QuantifierPusher]: treesize reduction 25, result has 45.7 percent of original size [2021-03-25 00:01:37,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:01:37,689 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-03-25 00:01:37,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:37,694 INFO L142 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-03-25 00:01:37,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:37,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:37,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:37,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:37,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:37,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:37,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:37,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:37,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:37,731 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-25 00:01:37,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:37,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:37,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:37,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:37,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082405139] [2021-03-25 00:01:37,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:37,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:01:37,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860749541] [2021-03-25 00:01:37,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:01:37,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:37,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:01:37,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:01:37,743 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:01:37,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 481 transitions, 6812 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:37,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:37,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:01:37,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:39,339 INFO L129 PetriNetUnfolder]: 3174/8261 cut-off events. [2021-03-25 00:01:39,339 INFO L130 PetriNetUnfolder]: For 106384/107710 co-relation queries the response was YES. [2021-03-25 00:01:39,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53406 conditions, 8261 events. 3174/8261 cut-off events. For 106384/107710 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 81675 event pairs, 387 based on Foata normal form. 352/8427 useless extension candidates. Maximal degree in co-relation 52984. Up to 1804 conditions per place. [2021-03-25 00:01:39,433 INFO L132 encePairwiseOnDemand]: 48/63 looper letters, 310 selfloop transitions, 287 changer transitions 4/690 dead transitions. [2021-03-25 00:01:39,433 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 690 transitions, 10768 flow [2021-03-25 00:01:39,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 00:01:39,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 00:01:39,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 519 transitions. [2021-03-25 00:01:39,435 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6865079365079365 [2021-03-25 00:01:39,435 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 519 transitions. [2021-03-25 00:01:39,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 519 transitions. [2021-03-25 00:01:39,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:39,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 519 transitions. [2021-03-25 00:01:39,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 43.25) internal successors, (519), 12 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:39,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:39,437 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:39,437 INFO L185 Difference]: Start difference. First operand has 222 places, 481 transitions, 6812 flow. Second operand 12 states and 519 transitions. [2021-03-25 00:01:39,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 690 transitions, 10768 flow [2021-03-25 00:01:39,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 690 transitions, 10623 flow, removed 72 selfloop flow, removed 1 redundant places. [2021-03-25 00:01:39,983 INFO L241 Difference]: Finished difference. Result has 240 places, 580 transitions, 9205 flow [2021-03-25 00:01:39,983 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=6741, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9205, PETRI_PLACES=240, PETRI_TRANSITIONS=580} [2021-03-25 00:01:39,983 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 192 predicate places. [2021-03-25 00:01:39,983 INFO L480 AbstractCegarLoop]: Abstraction has has 240 places, 580 transitions, 9205 flow [2021-03-25 00:01:39,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:39,984 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:39,984 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] [2021-03-25 00:01:39,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 00:01:39,984 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:39,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:39,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1866562616, now seen corresponding path program 18 times [2021-03-25 00:01:39,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:39,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172439622] [2021-03-25 00:01:39,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:40,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:40,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:40,015 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-03-25 00:01:40,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:40,017 INFO L142 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-03-25 00:01:40,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:40,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:40,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:40,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:40,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:40,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:40,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:40,036 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-25 00:01:40,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:40,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:40,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:40,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172439622] [2021-03-25 00:01:40,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:40,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:01:40,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233576828] [2021-03-25 00:01:40,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:01:40,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:40,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:01:40,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:01:40,046 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:01:40,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 580 transitions, 9205 flow. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:40,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:40,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:01:40,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:41,770 INFO L129 PetriNetUnfolder]: 3363/8861 cut-off events. [2021-03-25 00:01:41,771 INFO L130 PetriNetUnfolder]: For 147911/149552 co-relation queries the response was YES. [2021-03-25 00:01:41,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62222 conditions, 8861 events. 3363/8861 cut-off events. For 147911/149552 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 89411 event pairs, 901 based on Foata normal form. 211/8807 useless extension candidates. Maximal degree in co-relation 61754. Up to 5134 conditions per place. [2021-03-25 00:01:41,859 INFO L132 encePairwiseOnDemand]: 52/63 looper letters, 488 selfloop transitions, 72 changer transitions 12/661 dead transitions. [2021-03-25 00:01:41,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 661 transitions, 11557 flow [2021-03-25 00:01:41,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:01:41,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:01:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 345 transitions. [2021-03-25 00:01:41,860 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6845238095238095 [2021-03-25 00:01:41,860 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 345 transitions. [2021-03-25 00:01:41,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 345 transitions. [2021-03-25 00:01:41,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:41,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 345 transitions. [2021-03-25 00:01:41,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.125) internal successors, (345), 8 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:41,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:41,862 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:41,862 INFO L185 Difference]: Start difference. First operand has 240 places, 580 transitions, 9205 flow. Second operand 8 states and 345 transitions. [2021-03-25 00:01:41,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 661 transitions, 11557 flow [2021-03-25 00:01:42,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 661 transitions, 11410 flow, removed 73 selfloop flow, removed 1 redundant places. [2021-03-25 00:01:42,352 INFO L241 Difference]: Finished difference. Result has 251 places, 595 transitions, 9592 flow [2021-03-25 00:01:42,352 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=9078, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9592, PETRI_PLACES=251, PETRI_TRANSITIONS=595} [2021-03-25 00:01:42,353 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 203 predicate places. [2021-03-25 00:01:42,353 INFO L480 AbstractCegarLoop]: Abstraction has has 251 places, 595 transitions, 9592 flow [2021-03-25 00:01:42,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:42,353 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:42,353 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] [2021-03-25 00:01:42,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-25 00:01:42,353 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:42,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:42,353 INFO L82 PathProgramCache]: Analyzing trace with hash -525844616, now seen corresponding path program 19 times [2021-03-25 00:01:42,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:42,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706563233] [2021-03-25 00:01:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:42,373 INFO L142 QuantifierPusher]: treesize reduction 34, result has 41.4 percent of original size [2021-03-25 00:01:42,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 00:01:42,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:42,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:42,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:42,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:01:42,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:42,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:42,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:42,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:42,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:42,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:42,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:42,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:42,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:42,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:42,429 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-03-25 00:01:42,429 INFO L147 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size 9 [2021-03-25 00:01:42,442 INFO L142 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-03-25 00:01:42,443 INFO L147 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size 12 [2021-03-25 00:01:42,461 INFO L142 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-03-25 00:01:42,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:42,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:42,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:42,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706563233] [2021-03-25 00:01:42,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:42,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:01:42,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760723611] [2021-03-25 00:01:42,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:01:42,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:42,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:01:42,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:01:42,464 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:01:42,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 595 transitions, 9592 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:42,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:42,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:01:42,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:44,485 INFO L129 PetriNetUnfolder]: 3340/8995 cut-off events. [2021-03-25 00:01:44,485 INFO L130 PetriNetUnfolder]: For 151451/153166 co-relation queries the response was YES. [2021-03-25 00:01:44,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63044 conditions, 8995 events. 3340/8995 cut-off events. For 151451/153166 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 92360 event pairs, 807 based on Foata normal form. 366/9104 useless extension candidates. Maximal degree in co-relation 62557. Up to 5116 conditions per place. [2021-03-25 00:01:44,587 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 508 selfloop transitions, 110 changer transitions 55/762 dead transitions. [2021-03-25 00:01:44,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 762 transitions, 13485 flow [2021-03-25 00:01:44,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-25 00:01:44,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-25 00:01:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 593 transitions. [2021-03-25 00:01:44,588 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6723356009070295 [2021-03-25 00:01:44,589 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 593 transitions. [2021-03-25 00:01:44,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 593 transitions. [2021-03-25 00:01:44,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:44,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 593 transitions. [2021-03-25 00:01:44,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 42.357142857142854) internal successors, (593), 14 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:44,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:44,591 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:44,591 INFO L185 Difference]: Start difference. First operand has 251 places, 595 transitions, 9592 flow. Second operand 14 states and 593 transitions. [2021-03-25 00:01:44,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 762 transitions, 13485 flow [2021-03-25 00:01:45,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 762 transitions, 13385 flow, removed 20 selfloop flow, removed 2 redundant places. [2021-03-25 00:01:45,195 INFO L241 Difference]: Finished difference. Result has 272 places, 637 transitions, 10491 flow [2021-03-25 00:01:45,195 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=9374, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10491, PETRI_PLACES=272, PETRI_TRANSITIONS=637} [2021-03-25 00:01:45,195 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 224 predicate places. [2021-03-25 00:01:45,195 INFO L480 AbstractCegarLoop]: Abstraction has has 272 places, 637 transitions, 10491 flow [2021-03-25 00:01:45,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:45,196 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:45,196 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] [2021-03-25 00:01:45,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-25 00:01:45,196 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:45,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:45,196 INFO L82 PathProgramCache]: Analyzing trace with hash 52535116, now seen corresponding path program 20 times [2021-03-25 00:01:45,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:45,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054693456] [2021-03-25 00:01:45,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:45,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:45,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:01:45,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:45,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:45,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:45,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:45,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:45,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:45,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:45,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:01:45,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:45,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:45,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:45,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:01:45,261 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-03-25 00:01:45,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:01:45,270 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 00:01:45,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:45,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:45,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:45,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054693456] [2021-03-25 00:01:45,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:45,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:01:45,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92501617] [2021-03-25 00:01:45,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:01:45,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:45,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:01:45,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:01:45,274 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:01:45,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 637 transitions, 10491 flow. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:45,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:45,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:01:45,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:47,359 INFO L129 PetriNetUnfolder]: 3494/9289 cut-off events. [2021-03-25 00:01:47,359 INFO L130 PetriNetUnfolder]: For 198611/201081 co-relation queries the response was YES. [2021-03-25 00:01:47,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71134 conditions, 9289 events. 3494/9289 cut-off events. For 198611/201081 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 94950 event pairs, 890 based on Foata normal form. 432/9449 useless extension candidates. Maximal degree in co-relation 70625. Up to 5485 conditions per place. [2021-03-25 00:01:47,667 INFO L132 encePairwiseOnDemand]: 51/63 looper letters, 555 selfloop transitions, 93 changer transitions 15/752 dead transitions. [2021-03-25 00:01:47,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 752 transitions, 13976 flow [2021-03-25 00:01:47,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:01:47,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:01:47,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 345 transitions. [2021-03-25 00:01:47,673 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6845238095238095 [2021-03-25 00:01:47,673 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 345 transitions. [2021-03-25 00:01:47,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 345 transitions. [2021-03-25 00:01:47,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:47,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 345 transitions. [2021-03-25 00:01:47,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.125) internal successors, (345), 8 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:47,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:47,675 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:47,675 INFO L185 Difference]: Start difference. First operand has 272 places, 637 transitions, 10491 flow. Second operand 8 states and 345 transitions. [2021-03-25 00:01:47,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 752 transitions, 13976 flow [2021-03-25 00:01:48,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 752 transitions, 13626 flow, removed 175 selfloop flow, removed 0 redundant places. [2021-03-25 00:01:48,450 INFO L241 Difference]: Finished difference. Result has 284 places, 677 transitions, 11355 flow [2021-03-25 00:01:48,451 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=10285, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11355, PETRI_PLACES=284, PETRI_TRANSITIONS=677} [2021-03-25 00:01:48,451 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 236 predicate places. [2021-03-25 00:01:48,451 INFO L480 AbstractCegarLoop]: Abstraction has has 284 places, 677 transitions, 11355 flow [2021-03-25 00:01:48,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:48,451 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:48,451 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] [2021-03-25 00:01:48,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-25 00:01:48,451 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:48,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:48,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1964593488, now seen corresponding path program 21 times [2021-03-25 00:01:48,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:48,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873554599] [2021-03-25 00:01:48,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:48,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:48,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:48,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:48,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:01:48,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:48,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:48,512 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-25 00:01:48,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 00:01:48,519 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:01:48,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:48,527 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:01:48,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:48,535 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:01:48,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:48,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:48,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:48,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:48,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:48,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:48,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873554599] [2021-03-25 00:01:48,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:48,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:01:48,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24664501] [2021-03-25 00:01:48,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:01:48,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:48,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:01:48,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:01:48,560 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:01:48,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 677 transitions, 11355 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:48,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:48,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:01:48,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:50,584 INFO L129 PetriNetUnfolder]: 3033/8275 cut-off events. [2021-03-25 00:01:50,584 INFO L130 PetriNetUnfolder]: For 186584/188829 co-relation queries the response was YES. [2021-03-25 00:01:50,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64859 conditions, 8275 events. 3033/8275 cut-off events. For 186584/188829 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 84508 event pairs, 507 based on Foata normal form. 520/8604 useless extension candidates. Maximal degree in co-relation 64400. Up to 1815 conditions per place. [2021-03-25 00:01:50,675 INFO L132 encePairwiseOnDemand]: 50/63 looper letters, 360 selfloop transitions, 288 changer transitions 41/778 dead transitions. [2021-03-25 00:01:50,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 778 transitions, 14371 flow [2021-03-25 00:01:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:01:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:01:50,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 399 transitions. [2021-03-25 00:01:50,676 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2021-03-25 00:01:50,676 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 399 transitions. [2021-03-25 00:01:50,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 399 transitions. [2021-03-25 00:01:50,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:50,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 399 transitions. [2021-03-25 00:01:50,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 44.333333333333336) internal successors, (399), 9 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:50,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:50,678 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:50,678 INFO L185 Difference]: Start difference. First operand has 284 places, 677 transitions, 11355 flow. Second operand 9 states and 399 transitions. [2021-03-25 00:01:50,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 778 transitions, 14371 flow [2021-03-25 00:01:51,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 778 transitions, 14265 flow, removed 33 selfloop flow, removed 3 redundant places. [2021-03-25 00:01:51,427 INFO L241 Difference]: Finished difference. Result has 293 places, 649 transitions, 11594 flow [2021-03-25 00:01:51,428 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=11212, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11594, PETRI_PLACES=293, PETRI_TRANSITIONS=649} [2021-03-25 00:01:51,428 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 245 predicate places. [2021-03-25 00:01:51,428 INFO L480 AbstractCegarLoop]: Abstraction has has 293 places, 649 transitions, 11594 flow [2021-03-25 00:01:51,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:51,428 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:51,429 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] [2021-03-25 00:01:51,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-25 00:01:51,429 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:51,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:51,429 INFO L82 PathProgramCache]: Analyzing trace with hash 2065670114, now seen corresponding path program 22 times [2021-03-25 00:01:51,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:51,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499816930] [2021-03-25 00:01:51,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:51,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:51,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:51,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:51,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:01:51,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:51,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:51,480 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-25 00:01:51,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 00:01:51,485 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:01:51,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:51,493 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:01:51,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:51,500 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:01:51,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:51,508 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 00:01:51,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:51,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:51,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:51,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499816930] [2021-03-25 00:01:51,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:51,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:01:51,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159943653] [2021-03-25 00:01:51,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:01:51,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:51,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:01:51,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:01:51,518 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:01:51,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 649 transitions, 11594 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:51,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:51,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:01:51,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:53,601 INFO L129 PetriNetUnfolder]: 2913/7935 cut-off events. [2021-03-25 00:01:53,601 INFO L130 PetriNetUnfolder]: For 190263/192345 co-relation queries the response was YES. [2021-03-25 00:01:53,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64540 conditions, 7935 events. 2913/7935 cut-off events. For 190263/192345 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 80359 event pairs, 497 based on Foata normal form. 433/8176 useless extension candidates. Maximal degree in co-relation 64071. Up to 1745 conditions per place. [2021-03-25 00:01:53,709 INFO L132 encePairwiseOnDemand]: 50/63 looper letters, 355 selfloop transitions, 261 changer transitions 35/740 dead transitions. [2021-03-25 00:01:53,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 740 transitions, 14375 flow [2021-03-25 00:01:53,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 00:01:53,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 00:01:53,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 436 transitions. [2021-03-25 00:01:53,711 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.692063492063492 [2021-03-25 00:01:53,711 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 436 transitions. [2021-03-25 00:01:53,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 436 transitions. [2021-03-25 00:01:53,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:53,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 436 transitions. [2021-03-25 00:01:53,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 43.6) internal successors, (436), 10 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:53,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:53,713 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:53,713 INFO L185 Difference]: Start difference. First operand has 293 places, 649 transitions, 11594 flow. Second operand 10 states and 436 transitions. [2021-03-25 00:01:53,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 740 transitions, 14375 flow [2021-03-25 00:01:54,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 740 transitions, 14122 flow, removed 58 selfloop flow, removed 7 redundant places. [2021-03-25 00:01:54,582 INFO L241 Difference]: Finished difference. Result has 295 places, 618 transitions, 11261 flow [2021-03-25 00:01:54,583 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=11298, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11261, PETRI_PLACES=295, PETRI_TRANSITIONS=618} [2021-03-25 00:01:54,583 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 247 predicate places. [2021-03-25 00:01:54,583 INFO L480 AbstractCegarLoop]: Abstraction has has 295 places, 618 transitions, 11261 flow [2021-03-25 00:01:54,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:54,583 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:54,583 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] [2021-03-25 00:01:54,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-25 00:01:54,584 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:54,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:54,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1201184738, now seen corresponding path program 23 times [2021-03-25 00:01:54,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:54,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768709733] [2021-03-25 00:01:54,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:54,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:54,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:01:54,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:54,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:54,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:54,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:54,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:54,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:54,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:54,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:54,625 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:01:54,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:54,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:54,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:54,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:54,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:54,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:54,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768709733] [2021-03-25 00:01:54,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:54,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:01:54,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242188294] [2021-03-25 00:01:54,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:01:54,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:54,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:01:54,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:01:54,643 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:01:54,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 618 transitions, 11261 flow. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:54,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:54,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:01:54,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:56,796 INFO L129 PetriNetUnfolder]: 3086/8514 cut-off events. [2021-03-25 00:01:56,796 INFO L130 PetriNetUnfolder]: For 211464/213448 co-relation queries the response was YES. [2021-03-25 00:01:56,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69745 conditions, 8514 events. 3086/8514 cut-off events. For 211464/213448 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 88119 event pairs, 881 based on Foata normal form. 368/8652 useless extension candidates. Maximal degree in co-relation 69282. Up to 4823 conditions per place. [2021-03-25 00:01:56,912 INFO L132 encePairwiseOnDemand]: 52/63 looper letters, 555 selfloop transitions, 77 changer transitions 13/734 dead transitions. [2021-03-25 00:01:56,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 734 transitions, 14812 flow [2021-03-25 00:01:56,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:01:56,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:01:56,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 396 transitions. [2021-03-25 00:01:56,914 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2021-03-25 00:01:56,914 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 396 transitions. [2021-03-25 00:01:56,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 396 transitions. [2021-03-25 00:01:56,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:56,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 396 transitions. [2021-03-25 00:01:56,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:56,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:56,915 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:56,915 INFO L185 Difference]: Start difference. First operand has 295 places, 618 transitions, 11261 flow. Second operand 9 states and 396 transitions. [2021-03-25 00:01:56,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 734 transitions, 14812 flow [2021-03-25 00:01:57,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 734 transitions, 14154 flow, removed 23 selfloop flow, removed 9 redundant places. [2021-03-25 00:01:57,768 INFO L241 Difference]: Finished difference. Result has 301 places, 657 transitions, 11860 flow [2021-03-25 00:01:57,769 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=10687, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11860, PETRI_PLACES=301, PETRI_TRANSITIONS=657} [2021-03-25 00:01:57,769 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 253 predicate places. [2021-03-25 00:01:57,769 INFO L480 AbstractCegarLoop]: Abstraction has has 301 places, 657 transitions, 11860 flow [2021-03-25 00:01:57,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:57,769 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:57,769 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] [2021-03-25 00:01:57,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-25 00:01:57,770 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:57,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:57,770 INFO L82 PathProgramCache]: Analyzing trace with hash -699263398, now seen corresponding path program 24 times [2021-03-25 00:01:57,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:57,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421716451] [2021-03-25 00:01:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:57,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:57,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 00:01:57,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:57,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:01:57,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:57,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:57,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:57,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:01:57,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:57,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:01:57,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:57,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:57,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:57,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:57,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:57,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:01:57,856 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:01:57,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:57,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:57,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:57,880 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-03-25 00:01:57,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:57,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:57,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:57,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421716451] [2021-03-25 00:01:57,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:57,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:01:57,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033039123] [2021-03-25 00:01:57,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:01:57,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:57,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:01:57,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:01:57,892 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:01:57,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 657 transitions, 11860 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:57,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:57,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:01:57,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:02:00,271 INFO L129 PetriNetUnfolder]: 3185/8918 cut-off events. [2021-03-25 00:02:00,271 INFO L130 PetriNetUnfolder]: For 212353/214708 co-relation queries the response was YES. [2021-03-25 00:02:00,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72008 conditions, 8918 events. 3185/8918 cut-off events. For 212353/214708 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 93784 event pairs, 812 based on Foata normal form. 494/9186 useless extension candidates. Maximal degree in co-relation 71527. Up to 5146 conditions per place. [2021-03-25 00:02:00,408 INFO L132 encePairwiseOnDemand]: 50/63 looper letters, 536 selfloop transitions, 123 changer transitions 5/753 dead transitions. [2021-03-25 00:02:00,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 753 transitions, 15032 flow [2021-03-25 00:02:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-25 00:02:00,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-25 00:02:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 546 transitions. [2021-03-25 00:02:00,410 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2021-03-25 00:02:00,410 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 546 transitions. [2021-03-25 00:02:00,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 546 transitions. [2021-03-25 00:02:00,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:02:00,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 546 transitions. [2021-03-25 00:02:00,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 42.0) internal successors, (546), 13 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:00,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 63.0) internal successors, (882), 14 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:00,412 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 63.0) internal successors, (882), 14 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:00,412 INFO L185 Difference]: Start difference. First operand has 301 places, 657 transitions, 11860 flow. Second operand 13 states and 546 transitions. [2021-03-25 00:02:00,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 753 transitions, 15032 flow [2021-03-25 00:02:01,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 753 transitions, 14970 flow, removed 31 selfloop flow, removed 0 redundant places. [2021-03-25 00:02:01,575 INFO L241 Difference]: Finished difference. Result has 319 places, 694 transitions, 12912 flow [2021-03-25 00:02:01,575 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=11808, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12912, PETRI_PLACES=319, PETRI_TRANSITIONS=694} [2021-03-25 00:02:01,575 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 271 predicate places. [2021-03-25 00:02:01,575 INFO L480 AbstractCegarLoop]: Abstraction has has 319 places, 694 transitions, 12912 flow [2021-03-25 00:02:01,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:01,576 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:02:01,576 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] [2021-03-25 00:02:01,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-25 00:02:01,576 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:02:01,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:02:01,576 INFO L82 PathProgramCache]: Analyzing trace with hash 459545440, now seen corresponding path program 25 times [2021-03-25 00:02:01,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:02:01,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813939917] [2021-03-25 00:02:01,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:02:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:02:01,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:01,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:02:01,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:01,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:02:01,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:01,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:01,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:01,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:01,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:01,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:02:01,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:01,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:02:01,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:01,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:02:01,633 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:02:01,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:02:01,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:01,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:01,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:01,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:01,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:01,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:02:01,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:02:01,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813939917] [2021-03-25 00:02:01,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:02:01,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:02:01,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691879665] [2021-03-25 00:02:01,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:02:01,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:02:01,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:02:01,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:02:01,661 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:02:01,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 694 transitions, 12912 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:01,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:02:01,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:02:01,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:02:04,042 INFO L129 PetriNetUnfolder]: 3060/8638 cut-off events. [2021-03-25 00:02:04,042 INFO L130 PetriNetUnfolder]: For 228900/231591 co-relation queries the response was YES. [2021-03-25 00:02:04,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72109 conditions, 8638 events. 3060/8638 cut-off events. For 228900/231591 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 91026 event pairs, 860 based on Foata normal form. 626/9047 useless extension candidates. Maximal degree in co-relation 71615. Up to 4321 conditions per place. [2021-03-25 00:02:04,188 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 484 selfloop transitions, 191 changer transitions 54/818 dead transitions. [2021-03-25 00:02:04,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 818 transitions, 16744 flow [2021-03-25 00:02:04,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-25 00:02:04,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-25 00:02:04,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 674 transitions. [2021-03-25 00:02:04,189 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6686507936507936 [2021-03-25 00:02:04,189 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 674 transitions. [2021-03-25 00:02:04,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 674 transitions. [2021-03-25 00:02:04,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:02:04,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 674 transitions. [2021-03-25 00:02:04,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 42.125) internal successors, (674), 16 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:04,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 63.0) internal successors, (1071), 17 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:04,192 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 63.0) internal successors, (1071), 17 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:04,192 INFO L185 Difference]: Start difference. First operand has 319 places, 694 transitions, 12912 flow. Second operand 16 states and 674 transitions. [2021-03-25 00:02:04,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 818 transitions, 16744 flow [2021-03-25 00:02:05,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 818 transitions, 16486 flow, removed 116 selfloop flow, removed 2 redundant places. [2021-03-25 00:02:05,415 INFO L241 Difference]: Finished difference. Result has 342 places, 694 transitions, 13375 flow [2021-03-25 00:02:05,416 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=12668, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=13375, PETRI_PLACES=342, PETRI_TRANSITIONS=694} [2021-03-25 00:02:05,416 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 294 predicate places. [2021-03-25 00:02:05,416 INFO L480 AbstractCegarLoop]: Abstraction has has 342 places, 694 transitions, 13375 flow [2021-03-25 00:02:05,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:05,416 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:02:05,416 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] [2021-03-25 00:02:05,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-25 00:02:05,416 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:02:05,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:02:05,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1661680864, now seen corresponding path program 26 times [2021-03-25 00:02:05,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:02:05,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309588050] [2021-03-25 00:02:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:02:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:02:05,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:05,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:02:05,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:05,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:02:05,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:05,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:05,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:05,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:05,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:05,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:05,462 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-03-25 00:02:05,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 00:02:05,467 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:02:05,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:05,474 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 00:02:05,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:05,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:05,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:02:05,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:02:05,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309588050] [2021-03-25 00:02:05,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:02:05,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:02:05,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348807733] [2021-03-25 00:02:05,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:02:05,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:02:05,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:02:05,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:02:05,485 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:02:05,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 694 transitions, 13375 flow. Second operand has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:05,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:02:05,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:02:05,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:02:08,522 INFO L129 PetriNetUnfolder]: 3701/10700 cut-off events. [2021-03-25 00:02:08,522 INFO L130 PetriNetUnfolder]: For 311649/314496 co-relation queries the response was YES. [2021-03-25 00:02:08,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91344 conditions, 10700 events. 3701/10700 cut-off events. For 311649/314496 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 117280 event pairs, 547 based on Foata normal form. 746/11176 useless extension candidates. Maximal degree in co-relation 90583. Up to 2350 conditions per place. [2021-03-25 00:02:08,656 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 471 selfloop transitions, 372 changer transitions 52/984 dead transitions. [2021-03-25 00:02:08,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 984 transitions, 21249 flow [2021-03-25 00:02:08,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 00:02:08,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 00:02:08,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 530 transitions. [2021-03-25 00:02:08,657 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.701058201058201 [2021-03-25 00:02:08,657 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 530 transitions. [2021-03-25 00:02:08,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 530 transitions. [2021-03-25 00:02:08,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:02:08,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 530 transitions. [2021-03-25 00:02:08,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 44.166666666666664) internal successors, (530), 12 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:08,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:08,659 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:08,659 INFO L185 Difference]: Start difference. First operand has 342 places, 694 transitions, 13375 flow. Second operand 12 states and 530 transitions. [2021-03-25 00:02:08,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 984 transitions, 21249 flow [2021-03-25 00:02:10,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 984 transitions, 20865 flow, removed 122 selfloop flow, removed 4 redundant places. [2021-03-25 00:02:10,212 INFO L241 Difference]: Finished difference. Result has 355 places, 784 transitions, 16539 flow [2021-03-25 00:02:10,213 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=12987, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16539, PETRI_PLACES=355, PETRI_TRANSITIONS=784} [2021-03-25 00:02:10,213 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 307 predicate places. [2021-03-25 00:02:10,213 INFO L480 AbstractCegarLoop]: Abstraction has has 355 places, 784 transitions, 16539 flow [2021-03-25 00:02:10,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:10,213 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:02:10,213 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] [2021-03-25 00:02:10,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-25 00:02:10,213 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:02:10,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:02:10,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1812219030, now seen corresponding path program 27 times [2021-03-25 00:02:10,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:02:10,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849639087] [2021-03-25 00:02:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:02:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:02:10,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:10,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:02:10,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:10,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:02:10,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:10,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:02:10,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:10,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:02:10,267 INFO L142 QuantifierPusher]: treesize reduction 10, result has 63.0 percent of original size [2021-03-25 00:02:10,267 INFO L147 QuantifierPusher]: treesize reduction 3, result has 82.4 percent of original size 14 [2021-03-25 00:02:10,281 INFO L142 QuantifierPusher]: treesize reduction 14, result has 51.7 percent of original size [2021-03-25 00:02:10,281 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-03-25 00:02:10,294 INFO L142 QuantifierPusher]: treesize reduction 10, result has 54.5 percent of original size [2021-03-25 00:02:10,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:02:10,304 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-03-25 00:02:10,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:02:10,314 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 00:02:10,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:10,324 INFO L142 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-03-25 00:02:10,324 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-03-25 00:02:10,344 INFO L142 QuantifierPusher]: treesize reduction 11, result has 8.3 percent of original size [2021-03-25 00:02:10,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:02:10,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:10,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:02:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:02:10,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849639087] [2021-03-25 00:02:10,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:02:10,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-25 00:02:10,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859233130] [2021-03-25 00:02:10,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 00:02:10,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:02:10,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 00:02:10,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-03-25 00:02:10,347 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:02:10,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 784 transitions, 16539 flow. Second operand has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:10,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:02:10,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:02:10,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:02:13,899 INFO L129 PetriNetUnfolder]: 3766/11080 cut-off events. [2021-03-25 00:02:13,899 INFO L130 PetriNetUnfolder]: For 375727/378488 co-relation queries the response was YES. [2021-03-25 00:02:14,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99518 conditions, 11080 events. 3766/11080 cut-off events. For 375727/378488 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 123283 event pairs, 1288 based on Foata normal form. 393/11205 useless extension candidates. Maximal degree in co-relation 98632. Up to 6126 conditions per place. [2021-03-25 00:02:14,051 INFO L132 encePairwiseOnDemand]: 48/63 looper letters, 617 selfloop transitions, 178 changer transitions 4/888 dead transitions. [2021-03-25 00:02:14,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 888 transitions, 20373 flow [2021-03-25 00:02:14,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-25 00:02:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-03-25 00:02:14,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 848 transitions. [2021-03-25 00:02:14,053 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6409674981103552 [2021-03-25 00:02:14,053 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 848 transitions. [2021-03-25 00:02:14,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 848 transitions. [2021-03-25 00:02:14,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:02:14,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 848 transitions. [2021-03-25 00:02:14,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 40.38095238095238) internal successors, (848), 21 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:14,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 63.0) internal successors, (1386), 22 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:14,056 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 63.0) internal successors, (1386), 22 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:14,056 INFO L185 Difference]: Start difference. First operand has 355 places, 784 transitions, 16539 flow. Second operand 21 states and 848 transitions. [2021-03-25 00:02:14,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 888 transitions, 20373 flow [2021-03-25 00:02:16,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 888 transitions, 19882 flow, removed 136 selfloop flow, removed 8 redundant places. [2021-03-25 00:02:16,153 INFO L241 Difference]: Finished difference. Result has 369 places, 815 transitions, 17296 flow [2021-03-25 00:02:16,153 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16113, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=17296, PETRI_PLACES=369, PETRI_TRANSITIONS=815} [2021-03-25 00:02:16,154 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 321 predicate places. [2021-03-25 00:02:16,154 INFO L480 AbstractCegarLoop]: Abstraction has has 369 places, 815 transitions, 17296 flow [2021-03-25 00:02:16,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:16,154 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:02:16,154 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] [2021-03-25 00:02:16,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-25 00:02:16,154 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:02:16,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:02:16,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1321101358, now seen corresponding path program 28 times [2021-03-25 00:02:16,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:02:16,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389922845] [2021-03-25 00:02:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:02:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:02:16,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:16,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:02:16,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:16,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:02:16,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:16,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:02:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:02:16,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389922845] [2021-03-25 00:02:16,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:02:16,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 00:02:16,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886589872] [2021-03-25 00:02:16,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 00:02:16,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:02:16,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 00:02:16,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 00:02:16,165 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-03-25 00:02:16,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 815 transitions, 17296 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:16,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:02:16,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-03-25 00:02:16,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:02:17,626 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([132] L63-->L64: Formula: (or (= v_n1_14 0) (and (not (= v_n1_14 v_n3_12)) (not (< v_n1_14 v_n3_12)))) InVars {n3=v_n3_12, n1=v_n1_14} OutVars{n3=v_n3_12, n1=v_n1_14} AuxVars[] AssignedVars[][63], [Black: 256#(and (<= 1 i2) (<= i3 0) (<= 2 i1) (< 2 i) (<= i 3) (<= i2 1) (<= i1 2) (<= 0 i3)), Black: 513#(and (<= (+ n2 1) n1) (<= n2 n3) (<= 1 n2)), Black: 497#(and (<= n2 n3) (<= n2 n1) (<= 0 n2)), Black: 498#(and (<= n2 n1) (<= 0 n2)), Black: 499#(and (<= (+ n2 1) n1) (<= 0 n2)), Black: 500#(and (< n2 (+ n1 1)) (<= 1 n2)), 263#true, Black: 501#(and (<= n1 n2) (< n2 (+ n1 1)) (<= 1 n2)), Black: 505#(and (<= (+ n2 1) n1) (<= n2 n3) (<= 0 n2)), Black: 507#(and (<= n1 n2) (<= n2 n3) (< n2 (+ n1 1)) (<= 1 n2)), 10#thread1EXITtrue, Black: 509#(and (<= n2 n3) (< n2 (+ n1 1)) (<= 1 n2)), Black: 511#(and (<= (+ n2 1) n1) (<= 1 n2)), 525#true, Black: 528#(and (<= n1 n2) (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 529#(and (<= n1 n2) (<= 0 n1) (<= n2 n1)), Black: 530#(and (<= 1 n1) (<= (+ n2 1) n1) (<= n1 (+ n2 1))), Black: 531#(and (<= n1 n2) (<= 1 n1) (< n2 (+ n1 1))), Black: 533#(and (<= n1 n2) (<= 1 n1) (<= n3 n1) (< n2 (+ n1 1))), Black: 266#(and (<= n2 n3) (<= n3 0) (<= 0 n2)), Black: 267#(and (<= 0 n3) (<= n3 0) (<= 0 n2)), 32#L77true, Black: 271#(and (< 0 n3) (or (<= (+ n3 1) n1) (< n3 (+ n2 1)))), 548#(and (<= n2 n3) (<= 1 n2)), Black: 546#(and (<= 0 n3) (<= 1 n2)), 38#L64true, 44#L49true, Black: 561#(and (<= 1 n3) (<= 1 n2)), 567#true, Black: 311#(and (<= i2 0) (<= i1 1) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= 0 i2) (<= 1 i1)), Black: 577#(and (<= n1 n2) (<= 1 n3) (= n3 n2)), 67#true, Black: 569#(and (<= n1 n2) (<= 0 n3) (<= n2 n3)), Black: 570#(and (<= 0 n3) (<= n2 n3)), Black: 571#(and (<= 1 n3) (<= (+ n2 1) n3)), Black: 572#(and (<= 1 n3) (= n3 n2)), Black: 573#(and (<= 1 n3) (<= (+ n3 1) n2)), Black: 575#(and (<= n1 n2) (<= 1 n3) (<= (+ n2 1) n3)), 586#true, Black: 323#(and (< n2 n1) (<= 0 n3) (<= (+ n3 1) n2)), Black: 324#(and (<= 1 n3) (< n2 n1) (<= n3 n2)), Black: 325#(and (<= 1 n3) (<= (+ n3 1) n1)), Black: 331#(and (<= 1 n3) (< n2 n1) (= n3 n2)), 342#true, Black: 592#(and (<= 1 n3) (<= 1 n1) (<= (+ n2 1) n3)), Black: 594#(and (<= 1 n1) (<= 2 n2)), Black: 595#(and (< n2 n1) (<= 2 n2)), Black: 589#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 590#(and (<= 0 n1) (<= 0 n3) (<= n2 n3)), 95#true, Black: 591#(and (<= 1 n1) (<= 0 n3) (<= n2 n3)), Black: 347#(and (< n3 (+ n2 1)) (< 0 n2) (<= n2 n3)), Black: 349#(and (<= n1 n2) (< 0 n2) (<= n3 n2) (<= n2 n3)), 609#true, 354#true, Black: 97#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 101#(and (<= 1 n1) (<= (+ n1 1) n2)), Black: 111#e2, Black: 116#e3, Black: 624#(and (<= n1 n2) (<= 1 n1) (<= (+ n2 1) n3)), Black: 628#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 613#(and (<= 0 n1) (<= 0 n3) (<= n2 n3)), Black: 614#(and (<= 1 n1) (<= 0 n3) (<= n2 n3)), Black: 630#(and (<= n1 n2) (<= 1 n1) (= n3 n2) (<= 2 n2)), Black: 369#(and (<= 1 n3) (<= n2 n3) (< n3 (+ n1 1))), Black: 632#(and (<= n1 n2) (<= 1 n1) (<= n2 n3) (<= 2 n2)), Black: 371#(and (<= 1 n3) (<= n2 n1) (< n3 (+ n1 1))), Black: 373#(and (<= 1 n3) (<= n3 n2) (<= n2 n3) (< n3 (+ n1 1))), 131#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 618#(and (<= n1 n2) (<= 1 n1)), Black: 358#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 620#(and (<= n1 n2) (<= 0 n1) (<= n2 n3)), Black: 360#(and (<= 0 n3) (<= n3 n1)), Black: 377#(and (<= 1 n3) (<= n2 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 361#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 362#(and (<= 1 n3) (< n3 (+ n1 1))), 650#(and (<= 0 n1) (<= 0 n3)), Black: 379#(and (<= 1 n3) (<= n2 n1) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 363#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 367#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n1)), 148#true, Black: 659#(and (<= 1 n3) (<= 1 n1) (<= n2 n1)), Black: 661#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 648#(and (<= n1 n3) (<= 0 n1) (<= n2 n1)), Black: 649#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), Black: 651#(and (<= 1 n1) (<= 0 n3)), Black: 652#(and (<= 1 n3) (<= 1 n1)), Black: 653#(and (<= 1 n3) (< n3 n1)), Black: 655#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), 672#true, Black: 419#(and (<= i2 0) (<= 2 i1) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= 0 i2) (<= i1 2)), Black: 160#(and (<= n1 n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 150#(and (<= n1 n3) (<= n3 n2) (<= 0 n2)), Black: 151#(and (<= n1 n2) (<= n3 n2) (<= 0 n2)), Black: 152#(and (<= n3 n2) (<= 0 n2)), Black: 153#(and (<= 1 n2) (<= (+ n3 1) n2)), Black: 154#(and (= n3 n2) (<= 1 n2)), Black: 158#(and (<= n1 n3) (<= 1 n2) (<= (+ n3 1) n2)), 434#(and (<= 0 n1) (<= 0 n3) (<= n2 n3)), 186#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 432#(and (<= n1 n2) (<= 0 n1) (<= n2 n3)), Black: 436#(and (<= 1 n1) (<= 0 n3) (<= n2 n3)), Black: 689#(and (<= 1 n3) (<= n3 n1) (<= (+ n2 1) n3)), Black: 438#(and (<= n1 n3) (<= 1 n1) (<= n2 n3)), Black: 678#(and (<= (+ n3 1) n1) (<= (+ n2 1) n1) (< 0 n1)), Black: 440#(and (<= n1 n2) (<= 1 n1) (<= n2 n3)), Black: 680#(and (<= 1 n3) (<= (+ n2 1) n3) (< 0 n1)), Black: 442#(and (<= 1 n3) (<= 1 n1) (<= n2 n3)), Black: 427#(and (<= 0 n1) (<= 0 n3)), Black: 681#(and (<= 1 n3) (= n3 n2) (< 0 n1)), Black: 428#(and (<= 1 n1) (<= 0 n3)), Black: 682#(and (<= 2 n2) (< 0 n1)), Black: 429#(and (<= 1 n3) (<= 1 n1)), Black: 683#(and (< n2 n1) (<= 2 n2)), Black: 701#(and (< n2 n1) (<= n3 n1) (<= 2 n2)), Black: 430#(and (<= n1 n3) (<= 1 n1)), 710#true, Black: 196#(and (<= 1 i2) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= i2 1) (<= i1 0) (<= 0 i1)), 203#true, 464#(and (<= 1 n3) (<= n2 n3) (<= 0 n2)), Black: 466#(and (= n3 n2) (<= 1 n2)), Black: 458#(and (<= n2 n3) (<= 0 n2)), Black: 459#(and (<= 0 n3) (<= 0 n2)), Black: 460#(and (<= 1 n3) (<= 0 n2)), Black: 461#(and (<= 1 n3) (<= 1 n2)), Black: 462#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 209#(and (<= 0 n3) (or (<= 2 n1) (<= 1 n2)) (<= n3 0)), Black: 216#(and (<= 1 n3) (or (not (= n3 n1)) (not (= n2 0))) (or (<= 2 n1) (<= 1 n2)) (or (< n3 (+ n1 1)) (<= n3 1))), Black: 218#(and (<= 1 n3) (or (<= 2 n1) (<= 1 n2)) (not (= n3 n1)) (or (< n3 (+ n1 1)) (<= n3 1))), Black: 220#(and (<= 1 n3) (or (not (= n3 n1)) (not (= n2 0))) (<= n2 n3) (or (<= 2 n1) (<= 1 n2)) (or (< n3 (+ n1 1)) (<= n3 1))), Black: 205#(and (<= n1 n3) (<= n2 n3) (<= n3 0) (<= 0 n2)), Black: 222#(and (<= 1 n3) (<= n2 n3) (or (<= 2 n1) (<= 1 n2)) (not (= n3 n1)) (or (< n3 (+ n1 1)) (<= n3 1))), Black: 206#(and (<= n2 n3) (<= n3 0) (<= 0 n2)), Black: 482#(and (<= n2 n3) (<= 0 n2)), Black: 483#(and (<= 0 n2) (<= (+ n2 1) n3)), Black: 484#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 486#(and (= n3 n2) (<= 1 n2)), 493#true]) [2021-03-25 00:02:17,626 INFO L384 tUnfolder$Statistics]: this new event has 26 ancestors and is cut-off event [2021-03-25 00:02:17,626 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-03-25 00:02:17,626 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-03-25 00:02:17,626 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-03-25 00:02:17,634 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([132] L63-->L64: Formula: (or (= v_n1_14 0) (and (not (= v_n1_14 v_n3_12)) (not (< v_n1_14 v_n3_12)))) InVars {n3=v_n3_12, n1=v_n1_14} OutVars{n3=v_n3_12, n1=v_n1_14} AuxVars[] AssignedVars[][63], [Black: 256#(and (<= 1 i2) (<= i3 0) (<= 2 i1) (< 2 i) (<= i 3) (<= i2 1) (<= i1 2) (<= 0 i3)), Black: 513#(and (<= (+ n2 1) n1) (<= n2 n3) (<= 1 n2)), Black: 497#(and (<= n2 n3) (<= n2 n1) (<= 0 n2)), Black: 498#(and (<= n2 n1) (<= 0 n2)), Black: 499#(and (<= (+ n2 1) n1) (<= 0 n2)), 263#true, Black: 500#(and (< n2 (+ n1 1)) (<= 1 n2)), Black: 501#(and (<= n1 n2) (< n2 (+ n1 1)) (<= 1 n2)), Black: 505#(and (<= (+ n2 1) n1) (<= n2 n3) (<= 0 n2)), Black: 507#(and (<= n1 n2) (<= n2 n3) (< n2 (+ n1 1)) (<= 1 n2)), 10#thread1EXITtrue, Black: 509#(and (<= n2 n3) (< n2 (+ n1 1)) (<= 1 n2)), Black: 511#(and (<= (+ n2 1) n1) (<= 1 n2)), 525#true, Black: 528#(and (<= n1 n2) (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 529#(and (<= n1 n2) (<= 0 n1) (<= n2 n1)), Black: 530#(and (<= 1 n1) (<= (+ n2 1) n1) (<= n1 (+ n2 1))), Black: 531#(and (<= n1 n2) (<= 1 n1) (< n2 (+ n1 1))), Black: 533#(and (<= n1 n2) (<= 1 n1) (<= n3 n1) (< n2 (+ n1 1))), Black: 266#(and (<= n2 n3) (<= n3 0) (<= 0 n2)), Black: 267#(and (<= 0 n3) (<= n3 0) (<= 0 n2)), Black: 271#(and (< 0 n3) (or (<= (+ n3 1) n1) (< n3 (+ n2 1)))), 32#L77true, 548#(and (<= n2 n3) (<= 1 n2)), 38#L64true, Black: 546#(and (<= 0 n3) (<= 1 n2)), 44#L49true, Black: 561#(and (<= 1 n3) (<= 1 n2)), 567#true, Black: 311#(and (<= i2 0) (<= i1 1) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= 0 i2) (<= 1 i1)), Black: 577#(and (<= n1 n2) (<= 1 n3) (= n3 n2)), 67#true, Black: 569#(and (<= n1 n2) (<= 0 n3) (<= n2 n3)), Black: 570#(and (<= 0 n3) (<= n2 n3)), Black: 571#(and (<= 1 n3) (<= (+ n2 1) n3)), Black: 572#(and (<= 1 n3) (= n3 n2)), Black: 573#(and (<= 1 n3) (<= (+ n3 1) n2)), Black: 575#(and (<= n1 n2) (<= 1 n3) (<= (+ n2 1) n3)), 586#true, Black: 323#(and (< n2 n1) (<= 0 n3) (<= (+ n3 1) n2)), Black: 324#(and (<= 1 n3) (< n2 n1) (<= n3 n2)), Black: 325#(and (<= 1 n3) (<= (+ n3 1) n1)), Black: 331#(and (<= 1 n3) (< n2 n1) (= n3 n2)), 342#true, Black: 592#(and (<= 1 n3) (<= 1 n1) (<= (+ n2 1) n3)), Black: 594#(and (<= 1 n1) (<= 2 n2)), Black: 595#(and (< n2 n1) (<= 2 n2)), Black: 589#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 590#(and (<= 0 n1) (<= 0 n3) (<= n2 n3)), 95#true, Black: 591#(and (<= 1 n1) (<= 0 n3) (<= n2 n3)), Black: 347#(and (< n3 (+ n2 1)) (< 0 n2) (<= n2 n3)), Black: 349#(and (<= n1 n2) (< 0 n2) (<= n3 n2) (<= n2 n3)), 609#true, 354#true, Black: 97#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 101#(and (<= 1 n1) (<= (+ n1 1) n2)), Black: 111#e2, Black: 116#e3, Black: 624#(and (<= n1 n2) (<= 1 n1) (<= (+ n2 1) n3)), Black: 628#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 613#(and (<= 0 n1) (<= 0 n3) (<= n2 n3)), Black: 614#(and (<= 1 n1) (<= 0 n3) (<= n2 n3)), Black: 630#(and (<= n1 n2) (<= 1 n1) (= n3 n2) (<= 2 n2)), Black: 632#(and (<= n1 n2) (<= 1 n1) (<= n2 n3) (<= 2 n2)), Black: 369#(and (<= 1 n3) (<= n2 n3) (< n3 (+ n1 1))), Black: 371#(and (<= 1 n3) (<= n2 n1) (< n3 (+ n1 1))), Black: 373#(and (<= 1 n3) (<= n3 n2) (<= n2 n3) (< n3 (+ n1 1))), 131#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 618#(and (<= n1 n2) (<= 1 n1)), Black: 358#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 620#(and (<= n1 n2) (<= 0 n1) (<= n2 n3)), Black: 360#(and (<= 0 n3) (<= n3 n1)), Black: 377#(and (<= 1 n3) (<= n2 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 361#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 362#(and (<= 1 n3) (< n3 (+ n1 1))), Black: 379#(and (<= 1 n3) (<= n2 n1) (not (= n3 n1)) (< n3 (+ n1 1))), 650#(and (<= 0 n1) (<= 0 n3)), Black: 363#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 367#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n1)), 148#true, Black: 659#(and (<= 1 n3) (<= 1 n1) (<= n2 n1)), Black: 661#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 648#(and (<= n1 n3) (<= 0 n1) (<= n2 n1)), Black: 649#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), Black: 651#(and (<= 1 n1) (<= 0 n3)), Black: 652#(and (<= 1 n3) (<= 1 n1)), Black: 653#(and (<= 1 n3) (< n3 n1)), Black: 655#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), 672#true, Black: 419#(and (<= i2 0) (<= 2 i1) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= 0 i2) (<= i1 2)), Black: 160#(and (<= n1 n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 150#(and (<= n1 n3) (<= n3 n2) (<= 0 n2)), Black: 151#(and (<= n1 n2) (<= n3 n2) (<= 0 n2)), Black: 152#(and (<= n3 n2) (<= 0 n2)), Black: 153#(and (<= 1 n2) (<= (+ n3 1) n2)), Black: 154#(and (= n3 n2) (<= 1 n2)), Black: 158#(and (<= n1 n3) (<= 1 n2) (<= (+ n3 1) n2)), 434#(and (<= 0 n1) (<= 0 n3) (<= n2 n3)), 186#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 432#(and (<= n1 n2) (<= 0 n1) (<= n2 n3)), Black: 436#(and (<= 1 n1) (<= 0 n3) (<= n2 n3)), Black: 438#(and (<= n1 n3) (<= 1 n1) (<= n2 n3)), Black: 689#(and (<= 1 n3) (<= n3 n1) (<= (+ n2 1) n3)), Black: 440#(and (<= n1 n2) (<= 1 n1) (<= n2 n3)), Black: 678#(and (<= (+ n3 1) n1) (<= (+ n2 1) n1) (< 0 n1)), Black: 680#(and (<= 1 n3) (<= (+ n2 1) n3) (< 0 n1)), Black: 442#(and (<= 1 n3) (<= 1 n1) (<= n2 n3)), Black: 681#(and (<= 1 n3) (= n3 n2) (< 0 n1)), Black: 427#(and (<= 0 n1) (<= 0 n3)), Black: 428#(and (<= 1 n1) (<= 0 n3)), Black: 682#(and (<= 2 n2) (< 0 n1)), Black: 429#(and (<= 1 n3) (<= 1 n1)), Black: 683#(and (< n2 n1) (<= 2 n2)), Black: 430#(and (<= n1 n3) (<= 1 n1)), Black: 701#(and (< n2 n1) (<= n3 n1) (<= 2 n2)), 710#true, Black: 196#(and (<= 1 i2) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= i2 1) (<= i1 0) (<= 0 i1)), 203#true, 464#(and (<= 1 n3) (<= n2 n3) (<= 0 n2)), Black: 466#(and (= n3 n2) (<= 1 n2)), Black: 458#(and (<= n2 n3) (<= 0 n2)), Black: 459#(and (<= 0 n3) (<= 0 n2)), Black: 460#(and (<= 1 n3) (<= 0 n2)), Black: 461#(and (<= 1 n3) (<= 1 n2)), Black: 462#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 209#(and (<= 0 n3) (or (<= 2 n1) (<= 1 n2)) (<= n3 0)), Black: 216#(and (<= 1 n3) (or (not (= n3 n1)) (not (= n2 0))) (or (<= 2 n1) (<= 1 n2)) (or (< n3 (+ n1 1)) (<= n3 1))), Black: 218#(and (<= 1 n3) (or (<= 2 n1) (<= 1 n2)) (not (= n3 n1)) (or (< n3 (+ n1 1)) (<= n3 1))), Black: 220#(and (<= 1 n3) (or (not (= n3 n1)) (not (= n2 0))) (<= n2 n3) (or (<= 2 n1) (<= 1 n2)) (or (< n3 (+ n1 1)) (<= n3 1))), Black: 205#(and (<= n1 n3) (<= n2 n3) (<= n3 0) (<= 0 n2)), Black: 222#(and (<= 1 n3) (<= n2 n3) (or (<= 2 n1) (<= 1 n2)) (not (= n3 n1)) (or (< n3 (+ n1 1)) (<= n3 1))), Black: 206#(and (<= n2 n3) (<= n3 0) (<= 0 n2)), Black: 482#(and (<= n2 n3) (<= 0 n2)), Black: 483#(and (<= 0 n2) (<= (+ n2 1) n3)), Black: 484#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 486#(and (= n3 n2) (<= 1 n2)), 493#true]) [2021-03-25 00:02:17,635 INFO L384 tUnfolder$Statistics]: this new event has 26 ancestors and is cut-off event [2021-03-25 00:02:17,635 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-03-25 00:02:17,635 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-03-25 00:02:17,635 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-03-25 00:02:17,635 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-03-25 00:02:17,753 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([151] L51-->thread2EXIT: Formula: (= v_n2_47 0) InVars {} OutVars{n2=v_n2_47} AuxVars[] AssignedVars[n2][691], [Black: 256#(and (<= 1 i2) (<= i3 0) (<= 2 i1) (< 2 i) (<= i 3) (<= i2 1) (<= i1 2) (<= 0 i3)), Black: 513#(and (<= (+ n2 1) n1) (<= n2 n3) (<= 1 n2)), Black: 497#(and (<= n2 n3) (<= n2 n1) (<= 0 n2)), Black: 498#(and (<= n2 n1) (<= 0 n2)), Black: 499#(and (<= (+ n2 1) n1) (<= 0 n2)), Black: 500#(and (< n2 (+ n1 1)) (<= 1 n2)), 263#true, Black: 501#(and (<= n1 n2) (< n2 (+ n1 1)) (<= 1 n2)), Black: 505#(and (<= (+ n2 1) n1) (<= n2 n3) (<= 0 n2)), Black: 507#(and (<= n1 n2) (<= n2 n3) (< n2 (+ n1 1)) (<= 1 n2)), 10#thread1EXITtrue, Black: 509#(and (<= n2 n3) (< n2 (+ n1 1)) (<= 1 n2)), Black: 511#(and (<= (+ n2 1) n1) (<= 1 n2)), 525#true, Black: 528#(and (<= n1 n2) (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 529#(and (<= n1 n2) (<= 0 n1) (<= n2 n1)), Black: 530#(and (<= 1 n1) (<= (+ n2 1) n1) (<= n1 (+ n2 1))), Black: 531#(and (<= n1 n2) (<= 1 n1) (< n2 (+ n1 1))), Black: 533#(and (<= n1 n2) (<= 1 n1) (<= n3 n1) (< n2 (+ n1 1))), Black: 266#(and (<= n2 n3) (<= n3 0) (<= 0 n2)), Black: 267#(and (<= 0 n3) (<= n3 0) (<= 0 n2)), 32#L77true, Black: 271#(and (< 0 n3) (or (<= (+ n3 1) n1) (< n3 (+ n2 1)))), Black: 546#(and (<= 0 n3) (<= 1 n2)), Black: 548#(and (<= n2 n3) (<= 1 n2)), 40#thread2EXITtrue, 558#(and (<= n2 n3) (<= 0 n2)), 49#L63true, Black: 561#(and (<= 1 n3) (<= 1 n2)), 567#true, Black: 311#(and (<= i2 0) (<= i1 1) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= 0 i2) (<= 1 i1)), Black: 577#(and (<= n1 n2) (<= 1 n3) (= n3 n2)), 67#true, Black: 569#(and (<= n1 n2) (<= 0 n3) (<= n2 n3)), Black: 570#(and (<= 0 n3) (<= n2 n3)), Black: 571#(and (<= 1 n3) (<= (+ n2 1) n3)), Black: 572#(and (<= 1 n3) (= n3 n2)), Black: 573#(and (<= 1 n3) (<= (+ n3 1) n2)), Black: 575#(and (<= n1 n2) (<= 1 n3) (<= (+ n2 1) n3)), 586#true, Black: 323#(and (< n2 n1) (<= 0 n3) (<= (+ n3 1) n2)), Black: 324#(and (<= 1 n3) (< n2 n1) (<= n3 n2)), Black: 325#(and (<= 1 n3) (<= (+ n3 1) n1)), Black: 331#(and (<= 1 n3) (< n2 n1) (= n3 n2)), 342#true, Black: 592#(and (<= 1 n3) (<= 1 n1) (<= (+ n2 1) n3)), Black: 594#(and (<= 1 n1) (<= 2 n2)), Black: 595#(and (< n2 n1) (<= 2 n2)), Black: 589#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 590#(and (<= 0 n1) (<= 0 n3) (<= n2 n3)), 95#true, Black: 591#(and (<= 1 n1) (<= 0 n3) (<= n2 n3)), Black: 347#(and (< n3 (+ n2 1)) (< 0 n2) (<= n2 n3)), Black: 349#(and (<= n1 n2) (< 0 n2) (<= n3 n2) (<= n2 n3)), 609#true, 354#true, Black: 97#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 101#(and (<= 1 n1) (<= (+ n1 1) n2)), Black: 111#e2, Black: 116#e3, 122#(and (<= i1 0) (<= 0 i1)), Black: 624#(and (<= n1 n2) (<= 1 n1) (<= (+ n2 1) n3)), Black: 628#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 613#(and (<= 0 n1) (<= 0 n3) (<= n2 n3)), Black: 614#(and (<= 1 n1) (<= 0 n3) (<= n2 n3)), Black: 630#(and (<= n1 n2) (<= 1 n1) (= n3 n2) (<= 2 n2)), Black: 369#(and (<= 1 n3) (<= n2 n3) (< n3 (+ n1 1))), Black: 632#(and (<= n1 n2) (<= 1 n1) (<= n2 n3) (<= 2 n2)), Black: 371#(and (<= 1 n3) (<= n2 n1) (< n3 (+ n1 1))), Black: 373#(and (<= 1 n3) (<= n3 n2) (<= n2 n3) (< n3 (+ n1 1))), Black: 618#(and (<= n1 n2) (<= 1 n1)), Black: 358#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 620#(and (<= n1 n2) (<= 0 n1) (<= n2 n3)), Black: 360#(and (<= 0 n3) (<= n3 n1)), Black: 377#(and (<= 1 n3) (<= n2 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 361#(and (<= (+ n3 1) n1) (<= 0 n3)), 649#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), Black: 362#(and (<= 1 n3) (< n3 (+ n1 1))), Black: 379#(and (<= 1 n3) (<= n2 n1) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 363#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 367#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n1)), 148#true, Black: 659#(and (<= 1 n3) (<= 1 n1) (<= n2 n1)), Black: 661#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 648#(and (<= n1 n3) (<= 0 n1) (<= n2 n1)), Black: 650#(and (<= 0 n1) (<= 0 n3)), Black: 651#(and (<= 1 n1) (<= 0 n3)), Black: 652#(and (<= 1 n3) (<= 1 n1)), Black: 653#(and (<= 1 n3) (< n3 n1)), Black: 655#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), 672#true, Black: 419#(and (<= i2 0) (<= 2 i1) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= 0 i2) (<= i1 2)), Black: 160#(and (<= n1 n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 150#(and (<= n1 n3) (<= n3 n2) (<= 0 n2)), Black: 151#(and (<= n1 n2) (<= n3 n2) (<= 0 n2)), Black: 152#(and (<= n3 n2) (<= 0 n2)), Black: 153#(and (<= 1 n2) (<= (+ n3 1) n2)), Black: 154#(and (= n3 n2) (<= 1 n2)), Black: 158#(and (<= n1 n3) (<= 1 n2) (<= (+ n3 1) n2)), 434#(and (<= 0 n1) (<= 0 n3) (<= n2 n3)), Black: 432#(and (<= n1 n2) (<= 0 n1) (<= n2 n3)), Black: 436#(and (<= 1 n1) (<= 0 n3) (<= n2 n3)), 190#(and (<= 1 i2) (<= 2 i) (<= i 2) (<= i2 1) (<= i1 0) (<= 0 i1)), Black: 689#(and (<= 1 n3) (<= n3 n1) (<= (+ n2 1) n3)), Black: 438#(and (<= n1 n3) (<= 1 n1) (<= n2 n3)), Black: 678#(and (<= (+ n3 1) n1) (<= (+ n2 1) n1) (< 0 n1)), Black: 440#(and (<= n1 n2) (<= 1 n1) (<= n2 n3)), Black: 680#(and (<= 1 n3) (<= (+ n2 1) n3) (< 0 n1)), Black: 442#(and (<= 1 n3) (<= 1 n1) (<= n2 n3)), Black: 427#(and (<= 0 n1) (<= 0 n3)), Black: 681#(and (<= 1 n3) (= n3 n2) (< 0 n1)), Black: 682#(and (<= 2 n2) (< 0 n1)), Black: 428#(and (<= 1 n1) (<= 0 n3)), Black: 683#(and (< n2 n1) (<= 2 n2)), Black: 429#(and (<= 1 n3) (<= 1 n1)), Black: 430#(and (<= n1 n3) (<= 1 n1)), Black: 701#(and (< n2 n1) (<= n3 n1) (<= 2 n2)), 710#true, Black: 196#(and (<= 1 i2) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= i2 1) (<= i1 0) (<= 0 i1)), 203#true, 464#(and (<= 1 n3) (<= n2 n3) (<= 0 n2)), Black: 466#(and (= n3 n2) (<= 1 n2)), Black: 458#(and (<= n2 n3) (<= 0 n2)), Black: 459#(and (<= 0 n3) (<= 0 n2)), Black: 460#(and (<= 1 n3) (<= 0 n2)), Black: 461#(and (<= 1 n3) (<= 1 n2)), Black: 462#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 209#(and (<= 0 n3) (or (<= 2 n1) (<= 1 n2)) (<= n3 0)), Black: 216#(and (<= 1 n3) (or (not (= n3 n1)) (not (= n2 0))) (or (<= 2 n1) (<= 1 n2)) (or (< n3 (+ n1 1)) (<= n3 1))), Black: 218#(and (<= 1 n3) (or (<= 2 n1) (<= 1 n2)) (not (= n3 n1)) (or (< n3 (+ n1 1)) (<= n3 1))), Black: 220#(and (<= 1 n3) (or (not (= n3 n1)) (not (= n2 0))) (<= n2 n3) (or (<= 2 n1) (<= 1 n2)) (or (< n3 (+ n1 1)) (<= n3 1))), Black: 205#(and (<= n1 n3) (<= n2 n3) (<= n3 0) (<= 0 n2)), Black: 222#(and (<= 1 n3) (<= n2 n3) (or (<= 2 n1) (<= 1 n2)) (not (= n3 n1)) (or (< n3 (+ n1 1)) (<= n3 1))), Black: 482#(and (<= n2 n3) (<= 0 n2)), Black: 206#(and (<= n2 n3) (<= n3 0) (<= 0 n2)), Black: 483#(and (<= 0 n2) (<= (+ n2 1) n3)), Black: 484#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 486#(and (= n3 n2) (<= 1 n2)), 493#true]) [2021-03-25 00:02:17,753 INFO L384 tUnfolder$Statistics]: this new event has 28 ancestors and is cut-off event [2021-03-25 00:02:17,753 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is cut-off event [2021-03-25 00:02:17,753 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is cut-off event [2021-03-25 00:02:17,753 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is cut-off event [2021-03-25 00:02:18,471 INFO L129 PetriNetUnfolder]: 2730/9544 cut-off events. [2021-03-25 00:02:18,472 INFO L130 PetriNetUnfolder]: For 263404/264910 co-relation queries the response was YES. [2021-03-25 00:02:18,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76770 conditions, 9544 events. 2730/9544 cut-off events. For 263404/264910 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 112114 event pairs, 893 based on Foata normal form. 398/9455 useless extension candidates. Maximal degree in co-relation 76335. Up to 2034 conditions per place. [2021-03-25 00:02:18,600 INFO L132 encePairwiseOnDemand]: 59/63 looper letters, 3 selfloop transitions, 54 changer transitions 2/771 dead transitions. [2021-03-25 00:02:18,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 771 transitions, 16420 flow [2021-03-25 00:02:18,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 00:02:18,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 00:02:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2021-03-25 00:02:18,601 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.91005291005291 [2021-03-25 00:02:18,601 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 172 transitions. [2021-03-25 00:02:18,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 172 transitions. [2021-03-25 00:02:18,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:02:18,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 172 transitions. [2021-03-25 00:02:18,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:18,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:18,602 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:18,602 INFO L185 Difference]: Start difference. First operand has 369 places, 815 transitions, 17296 flow. Second operand 3 states and 172 transitions. [2021-03-25 00:02:18,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 771 transitions, 16420 flow [2021-03-25 00:02:19,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 771 transitions, 16064 flow, removed 144 selfloop flow, removed 7 redundant places. [2021-03-25 00:02:19,966 INFO L241 Difference]: Finished difference. Result has 365 places, 769 transitions, 16107 flow [2021-03-25 00:02:19,967 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15950, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=717, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=16107, PETRI_PLACES=365, PETRI_TRANSITIONS=769} [2021-03-25 00:02:19,967 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 317 predicate places. [2021-03-25 00:02:19,967 INFO L480 AbstractCegarLoop]: Abstraction has has 365 places, 769 transitions, 16107 flow [2021-03-25 00:02:19,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:19,967 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:02:19,967 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] [2021-03-25 00:02:19,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-25 00:02:19,967 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:02:19,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:02:19,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1545027756, now seen corresponding path program 29 times [2021-03-25 00:02:19,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:02:19,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549570316] [2021-03-25 00:02:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:02:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:02:19,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:19,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:02:19,991 INFO L142 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-03-25 00:02:19,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:19,996 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-03-25 00:02:19,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:19,997 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:02:19,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:19,998 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-25 00:02:19,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 00:02:20,009 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:02:20,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:20,011 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:02:20,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:20,018 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:02:20,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:20,024 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 00:02:20,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:02:20,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:20,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:02:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:02:20,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549570316] [2021-03-25 00:02:20,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:02:20,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:02:20,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462384301] [2021-03-25 00:02:20,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:02:20,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:02:20,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:02:20,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:02:20,033 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:02:20,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 769 transitions, 16107 flow. Second operand has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:20,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:02:20,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:02:20,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:02:23,572 INFO L129 PetriNetUnfolder]: 3840/11286 cut-off events. [2021-03-25 00:02:23,573 INFO L130 PetriNetUnfolder]: For 360500/363052 co-relation queries the response was YES. [2021-03-25 00:02:23,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99657 conditions, 11286 events. 3840/11286 cut-off events. For 360500/363052 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 125466 event pairs, 802 based on Foata normal form. 526/11451 useless extension candidates. Maximal degree in co-relation 99101. Up to 2801 conditions per place. [2021-03-25 00:02:23,738 INFO L132 encePairwiseOnDemand]: 51/63 looper letters, 599 selfloop transitions, 224 changer transitions 19/929 dead transitions. [2021-03-25 00:02:23,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 929 transitions, 21422 flow [2021-03-25 00:02:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:02:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:02:23,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 346 transitions. [2021-03-25 00:02:23,739 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6865079365079365 [2021-03-25 00:02:23,739 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 346 transitions. [2021-03-25 00:02:23,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 346 transitions. [2021-03-25 00:02:23,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:02:23,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 346 transitions. [2021-03-25 00:02:23,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.25) internal successors, (346), 8 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:23,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:23,740 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:23,740 INFO L185 Difference]: Start difference. First operand has 365 places, 769 transitions, 16107 flow. Second operand 8 states and 346 transitions. [2021-03-25 00:02:23,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 929 transitions, 21422 flow [2021-03-25 00:02:25,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 929 transitions, 21246 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-25 00:02:25,539 INFO L241 Difference]: Finished difference. Result has 370 places, 811 transitions, 17635 flow [2021-03-25 00:02:25,539 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15993, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17635, PETRI_PLACES=370, PETRI_TRANSITIONS=811} [2021-03-25 00:02:25,539 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 322 predicate places. [2021-03-25 00:02:25,539 INFO L480 AbstractCegarLoop]: Abstraction has has 370 places, 811 transitions, 17635 flow [2021-03-25 00:02:25,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:25,540 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:02:25,540 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] [2021-03-25 00:02:25,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-25 00:02:25,540 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:02:25,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:02:25,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1183276176, now seen corresponding path program 30 times [2021-03-25 00:02:25,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:02:25,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766901208] [2021-03-25 00:02:25,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:02:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:02:25,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:25,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:02:25,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:25,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:02:25,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:25,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:02:25,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:25,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:02:25,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:25,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:25,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:25,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:25,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:25,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:25,609 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-25 00:02:25,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:02:25,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:25,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:02:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:02:25,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766901208] [2021-03-25 00:02:25,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:02:25,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:02:25,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461316661] [2021-03-25 00:02:25,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:02:25,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:02:25,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:02:25,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:02:25,620 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:02:25,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 811 transitions, 17635 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:25,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:02:25,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:02:25,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:02:29,960 INFO L129 PetriNetUnfolder]: 4087/12895 cut-off events. [2021-03-25 00:02:29,960 INFO L130 PetriNetUnfolder]: For 442152/445089 co-relation queries the response was YES. [2021-03-25 00:02:30,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113929 conditions, 12895 events. 4087/12895 cut-off events. For 442152/445089 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 151743 event pairs, 599 based on Foata normal form. 1181/13664 useless extension candidates. Maximal degree in co-relation 112920. Up to 2825 conditions per place. [2021-03-25 00:02:30,199 INFO L132 encePairwiseOnDemand]: 46/63 looper letters, 441 selfloop transitions, 570 changer transitions 16/1114 dead transitions. [2021-03-25 00:02:30,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 1114 transitions, 26432 flow [2021-03-25 00:02:30,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-25 00:02:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-25 00:02:30,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 702 transitions. [2021-03-25 00:02:30,200 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-03-25 00:02:30,200 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 702 transitions. [2021-03-25 00:02:30,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 702 transitions. [2021-03-25 00:02:30,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:02:30,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 702 transitions. [2021-03-25 00:02:30,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 43.875) internal successors, (702), 16 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:30,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 63.0) internal successors, (1071), 17 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:30,202 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 63.0) internal successors, (1071), 17 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:30,202 INFO L185 Difference]: Start difference. First operand has 370 places, 811 transitions, 17635 flow. Second operand 16 states and 702 transitions. [2021-03-25 00:02:30,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 1114 transitions, 26432 flow [2021-03-25 00:02:32,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 1114 transitions, 26261 flow, removed 66 selfloop flow, removed 2 redundant places. [2021-03-25 00:02:32,340 INFO L241 Difference]: Finished difference. Result has 397 places, 955 transitions, 23310 flow [2021-03-25 00:02:32,341 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17448, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=424, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=23310, PETRI_PLACES=397, PETRI_TRANSITIONS=955} [2021-03-25 00:02:32,341 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 349 predicate places. [2021-03-25 00:02:32,341 INFO L480 AbstractCegarLoop]: Abstraction has has 397 places, 955 transitions, 23310 flow [2021-03-25 00:02:32,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:32,341 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:02:32,341 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] [2021-03-25 00:02:32,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-25 00:02:32,341 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:02:32,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:02:32,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1207815144, now seen corresponding path program 31 times [2021-03-25 00:02:32,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:02:32,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374829674] [2021-03-25 00:02:32,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:02:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:02:32,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:32,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:02:32,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:32,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:02:32,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:32,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:02:32,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:32,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:02:32,407 INFO L142 QuantifierPusher]: treesize reduction 5, result has 73.7 percent of original size [2021-03-25 00:02:32,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:02:32,415 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-03-25 00:02:32,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:02:32,425 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-03-25 00:02:32,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:02:32,435 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 00:02:32,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:32,444 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-25 00:02:32,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:02:32,454 INFO L142 QuantifierPusher]: treesize reduction 11, result has 8.3 percent of original size [2021-03-25 00:02:32,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:02:32,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:32,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:02:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:02:32,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374829674] [2021-03-25 00:02:32,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:02:32,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 00:02:32,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662710666] [2021-03-25 00:02:32,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 00:02:32,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:02:32,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 00:02:32,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-25 00:02:32,457 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:02:32,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 955 transitions, 23310 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:32,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:02:32,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:02:32,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:02:37,004 INFO L129 PetriNetUnfolder]: 3883/12064 cut-off events. [2021-03-25 00:02:37,004 INFO L130 PetriNetUnfolder]: For 498894/502281 co-relation queries the response was YES. [2021-03-25 00:02:37,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116869 conditions, 12064 events. 3883/12064 cut-off events. For 498894/502281 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 139267 event pairs, 1196 based on Foata normal form. 270/11915 useless extension candidates. Maximal degree in co-relation 116068. Up to 6621 conditions per place. [2021-03-25 00:02:37,172 INFO L132 encePairwiseOnDemand]: 52/63 looper letters, 705 selfloop transitions, 163 changer transitions 22/977 dead transitions. [2021-03-25 00:02:37,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 977 transitions, 25691 flow [2021-03-25 00:02:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-25 00:02:37,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-25 00:02:37,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 573 transitions. [2021-03-25 00:02:37,173 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6496598639455783 [2021-03-25 00:02:37,173 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 573 transitions. [2021-03-25 00:02:37,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 573 transitions. [2021-03-25 00:02:37,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:02:37,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 573 transitions. [2021-03-25 00:02:37,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 40.92857142857143) internal successors, (573), 14 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:37,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:37,175 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:37,175 INFO L185 Difference]: Start difference. First operand has 397 places, 955 transitions, 23310 flow. Second operand 14 states and 573 transitions. [2021-03-25 00:02:37,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 977 transitions, 25691 flow [2021-03-25 00:02:40,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 977 transitions, 25085 flow, removed 262 selfloop flow, removed 4 redundant places. [2021-03-25 00:02:40,063 INFO L241 Difference]: Finished difference. Result has 406 places, 915 transitions, 21970 flow [2021-03-25 00:02:40,064 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=22200, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=933, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=770, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=21970, PETRI_PLACES=406, PETRI_TRANSITIONS=915} [2021-03-25 00:02:40,064 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 358 predicate places. [2021-03-25 00:02:40,064 INFO L480 AbstractCegarLoop]: Abstraction has has 406 places, 915 transitions, 21970 flow [2021-03-25 00:02:40,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:40,064 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:02:40,065 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] [2021-03-25 00:02:40,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-25 00:02:40,065 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:02:40,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:02:40,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1237918142, now seen corresponding path program 32 times [2021-03-25 00:02:40,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:02:40,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775232394] [2021-03-25 00:02:40,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:02:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:02:40,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:40,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 00:02:40,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:40,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 00:02:40,104 INFO L142 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-03-25 00:02:40,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:02:40,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:40,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:02:40,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:40,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:02:40,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:40,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:02:40,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:40,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:02:40,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:40,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:02:40,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:40,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:02:40,177 INFO L142 QuantifierPusher]: treesize reduction 1, result has 94.4 percent of original size [2021-03-25 00:02:40,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:02:40,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:40,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:02:40,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:40,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:02:40,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:40,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:02:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:02:40,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775232394] [2021-03-25 00:02:40,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:02:40,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-25 00:02:40,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859018642] [2021-03-25 00:02:40,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 00:02:40,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:02:40,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 00:02:40,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-03-25 00:02:40,220 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:02:40,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 915 transitions, 21970 flow. Second operand has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:40,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:02:40,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:02:40,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:02:45,338 INFO L129 PetriNetUnfolder]: 4399/13343 cut-off events. [2021-03-25 00:02:45,338 INFO L130 PetriNetUnfolder]: For 517894/521280 co-relation queries the response was YES. [2021-03-25 00:02:45,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126095 conditions, 13343 events. 4399/13343 cut-off events. For 517894/521280 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 155365 event pairs, 790 based on Foata normal form. 1082/13983 useless extension candidates. Maximal degree in co-relation 125105. Up to 3313 conditions per place. [2021-03-25 00:02:45,533 INFO L132 encePairwiseOnDemand]: 44/63 looper letters, 678 selfloop transitions, 409 changer transitions 60/1234 dead transitions. [2021-03-25 00:02:45,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 1234 transitions, 32066 flow [2021-03-25 00:02:45,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-25 00:02:45,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-03-25 00:02:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 796 transitions. [2021-03-25 00:02:45,534 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7019400352733686 [2021-03-25 00:02:45,534 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 796 transitions. [2021-03-25 00:02:45,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 796 transitions. [2021-03-25 00:02:45,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:02:45,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 796 transitions. [2021-03-25 00:02:45,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:45,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 63.0) internal successors, (1197), 19 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:45,537 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 63.0) internal successors, (1197), 19 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:45,537 INFO L185 Difference]: Start difference. First operand has 406 places, 915 transitions, 21970 flow. Second operand 18 states and 796 transitions. [2021-03-25 00:02:45,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 1234 transitions, 32066 flow [2021-03-25 00:02:48,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 1234 transitions, 31764 flow, removed 54 selfloop flow, removed 7 redundant places. [2021-03-25 00:02:48,546 INFO L241 Difference]: Finished difference. Result has 430 places, 1027 transitions, 25956 flow [2021-03-25 00:02:48,547 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=21531, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=907, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=25956, PETRI_PLACES=430, PETRI_TRANSITIONS=1027} [2021-03-25 00:02:48,547 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 382 predicate places. [2021-03-25 00:02:48,547 INFO L480 AbstractCegarLoop]: Abstraction has has 430 places, 1027 transitions, 25956 flow [2021-03-25 00:02:48,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:48,548 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:02:48,548 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] [2021-03-25 00:02:48,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-25 00:02:48,548 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:02:48,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:02:48,548 INFO L82 PathProgramCache]: Analyzing trace with hash -2024200594, now seen corresponding path program 33 times [2021-03-25 00:02:48,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:02:48,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258454548] [2021-03-25 00:02:48,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:02:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:02:48,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:48,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:02:48,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:48,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:02:48,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:48,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:48,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:48,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:02:48,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:48,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:48,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:48,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:48,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:48,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:02:48,608 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-25 00:02:48,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:02:48,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:48,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:02:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:02:48,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258454548] [2021-03-25 00:02:48,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:02:48,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:02:48,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685907647] [2021-03-25 00:02:48,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:02:48,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:02:48,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:02:48,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:02:48,619 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:02:48,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1027 transitions, 25956 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:48,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:02:48,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:02:48,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:02:53,268 INFO L129 PetriNetUnfolder]: 3695/11788 cut-off events. [2021-03-25 00:02:53,268 INFO L130 PetriNetUnfolder]: For 543167/545527 co-relation queries the response was YES. [2021-03-25 00:02:53,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118611 conditions, 11788 events. 3695/11788 cut-off events. For 543167/545527 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 137014 event pairs, 704 based on Foata normal form. 888/12268 useless extension candidates. Maximal degree in co-relation 117719. Up to 2342 conditions per place. [2021-03-25 00:02:53,777 INFO L132 encePairwiseOnDemand]: 47/63 looper letters, 524 selfloop transitions, 501 changer transitions 41/1153 dead transitions. [2021-03-25 00:02:53,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 1153 transitions, 31401 flow [2021-03-25 00:02:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-25 00:02:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-25 00:02:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 565 transitions. [2021-03-25 00:02:53,778 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6898656898656899 [2021-03-25 00:02:53,778 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 565 transitions. [2021-03-25 00:02:53,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 565 transitions. [2021-03-25 00:02:53,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:02:53,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 565 transitions. [2021-03-25 00:02:53,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 43.46153846153846) internal successors, (565), 13 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:53,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 63.0) internal successors, (882), 14 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:53,780 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 63.0) internal successors, (882), 14 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:53,780 INFO L185 Difference]: Start difference. First operand has 430 places, 1027 transitions, 25956 flow. Second operand 13 states and 565 transitions. [2021-03-25 00:02:53,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 1153 transitions, 31401 flow [2021-03-25 00:02:57,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 1153 transitions, 30577 flow, removed 392 selfloop flow, removed 1 redundant places. [2021-03-25 00:02:57,117 INFO L241 Difference]: Finished difference. Result has 447 places, 1022 transitions, 26665 flow [2021-03-25 00:02:57,118 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=24336, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=988, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=447, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=26665, PETRI_PLACES=447, PETRI_TRANSITIONS=1022} [2021-03-25 00:02:57,118 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 399 predicate places. [2021-03-25 00:02:57,118 INFO L480 AbstractCegarLoop]: Abstraction has has 447 places, 1022 transitions, 26665 flow [2021-03-25 00:02:57,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:57,118 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:02:57,118 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] [2021-03-25 00:02:57,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-25 00:02:57,118 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:02:57,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:02:57,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1824835832, now seen corresponding path program 34 times [2021-03-25 00:02:57,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:02:57,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499414433] [2021-03-25 00:02:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:02:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:02:57,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:57,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 00:02:57,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:57,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 00:02:57,157 INFO L142 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-03-25 00:02:57,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:02:57,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:57,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:02:57,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:57,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:02:57,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:57,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:02:57,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:57,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:02:57,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:57,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:02:57,234 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-03-25 00:02:57,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 00:02:57,259 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 00:02:57,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:02:57,277 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-25 00:02:57,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:02:57,293 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size [2021-03-25 00:02:57,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:02:57,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:02:57,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:02:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:02:57,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499414433] [2021-03-25 00:02:57,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:02:57,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-25 00:02:57,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929691746] [2021-03-25 00:02:57,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 00:02:57,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:02:57,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 00:02:57,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-25 00:02:57,309 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:02:57,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1022 transitions, 26665 flow. Second operand has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:02:57,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:02:57,310 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:02:57,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:02,347 INFO L129 PetriNetUnfolder]: 3706/12041 cut-off events. [2021-03-25 00:03:02,347 INFO L130 PetriNetUnfolder]: For 555909/558416 co-relation queries the response was YES. [2021-03-25 00:03:02,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122017 conditions, 12041 events. 3706/12041 cut-off events. For 555909/558416 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 142149 event pairs, 1021 based on Foata normal form. 294/11877 useless extension candidates. Maximal degree in co-relation 121102. Up to 6355 conditions per place. [2021-03-25 00:03:02,542 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 858 selfloop transitions, 190 changer transitions 45/1180 dead transitions. [2021-03-25 00:03:02,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1180 transitions, 32528 flow [2021-03-25 00:03:02,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-25 00:03:02,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-03-25 00:03:02,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 794 transitions. [2021-03-25 00:03:02,543 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6633249791144528 [2021-03-25 00:03:02,543 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 794 transitions. [2021-03-25 00:03:02,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 794 transitions. [2021-03-25 00:03:02,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:02,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 794 transitions. [2021-03-25 00:03:02,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 41.78947368421053) internal successors, (794), 19 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:02,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 63.0) internal successors, (1260), 20 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:02,546 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 63.0) internal successors, (1260), 20 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:02,546 INFO L185 Difference]: Start difference. First operand has 447 places, 1022 transitions, 26665 flow. Second operand 19 states and 794 transitions. [2021-03-25 00:03:02,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1180 transitions, 32528 flow [2021-03-25 00:03:06,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 1180 transitions, 31678 flow, removed 241 selfloop flow, removed 5 redundant places. [2021-03-25 00:03:06,049 INFO L241 Difference]: Finished difference. Result has 471 places, 1047 transitions, 27027 flow [2021-03-25 00:03:06,050 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=24991, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=989, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=827, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=27027, PETRI_PLACES=471, PETRI_TRANSITIONS=1047} [2021-03-25 00:03:06,050 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 423 predicate places. [2021-03-25 00:03:06,050 INFO L480 AbstractCegarLoop]: Abstraction has has 471 places, 1047 transitions, 27027 flow [2021-03-25 00:03:06,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:06,050 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:06,050 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] [2021-03-25 00:03:06,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-25 00:03:06,050 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:06,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:06,050 INFO L82 PathProgramCache]: Analyzing trace with hash 649573544, now seen corresponding path program 35 times [2021-03-25 00:03:06,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:06,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156106919] [2021-03-25 00:03:06,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:06,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:06,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 00:03:06,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:06,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:03:06,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:06,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:03:06,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:06,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:03:06,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:06,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:03:06,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:06,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:06,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:06,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:06,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:06,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:03:06,147 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 00:03:06,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:06,156 INFO L142 QuantifierPusher]: treesize reduction 16, result has 40.7 percent of original size [2021-03-25 00:03:06,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 00:03:06,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:06,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:06,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156106919] [2021-03-25 00:03:06,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:06,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:03:06,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099064078] [2021-03-25 00:03:06,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:03:06,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:06,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:03:06,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:03:06,166 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:03:06,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 1047 transitions, 27027 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:06,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:06,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:03:06,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:10,242 INFO L129 PetriNetUnfolder]: 3104/10255 cut-off events. [2021-03-25 00:03:10,242 INFO L130 PetriNetUnfolder]: For 516403/518896 co-relation queries the response was YES. [2021-03-25 00:03:10,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107101 conditions, 10255 events. 3104/10255 cut-off events. For 516403/518896 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 117664 event pairs, 786 based on Foata normal form. 613/10527 useless extension candidates. Maximal degree in co-relation 106920. Up to 3904 conditions per place. [2021-03-25 00:03:10,430 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 608 selfloop transitions, 177 changer transitions 249/1119 dead transitions. [2021-03-25 00:03:10,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 1119 transitions, 30891 flow [2021-03-25 00:03:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:03:10,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:03:10,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 406 transitions. [2021-03-25 00:03:10,432 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7160493827160493 [2021-03-25 00:03:10,432 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 406 transitions. [2021-03-25 00:03:10,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 406 transitions. [2021-03-25 00:03:10,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:10,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 406 transitions. [2021-03-25 00:03:10,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 45.111111111111114) internal successors, (406), 9 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:10,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:10,433 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:10,433 INFO L185 Difference]: Start difference. First operand has 471 places, 1047 transitions, 27027 flow. Second operand 9 states and 406 transitions. [2021-03-25 00:03:10,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 1119 transitions, 30891 flow [2021-03-25 00:03:13,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 1119 transitions, 30427 flow, removed 162 selfloop flow, removed 8 redundant places. [2021-03-25 00:03:13,767 INFO L241 Difference]: Finished difference. Result has 474 places, 813 transitions, 20846 flow [2021-03-25 00:03:13,768 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=24806, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=975, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=802, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20846, PETRI_PLACES=474, PETRI_TRANSITIONS=813} [2021-03-25 00:03:13,768 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 426 predicate places. [2021-03-25 00:03:13,768 INFO L480 AbstractCegarLoop]: Abstraction has has 474 places, 813 transitions, 20846 flow [2021-03-25 00:03:13,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:13,768 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:13,768 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] [2021-03-25 00:03:13,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-25 00:03:13,768 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:13,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:13,769 INFO L82 PathProgramCache]: Analyzing trace with hash -2350088, now seen corresponding path program 36 times [2021-03-25 00:03:13,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:13,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362097826] [2021-03-25 00:03:13,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:13,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:13,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:03:13,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:13,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:13,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:13,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:13,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:13,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:13,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:13,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:13,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:13,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:03:13,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:13,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:03:13,825 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:03:13,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:13,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:13,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:13,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:13,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:13,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:13,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:13,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:13,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362097826] [2021-03-25 00:03:13,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:13,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:03:13,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035789112] [2021-03-25 00:03:13,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:03:13,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:13,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:03:13,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:03:13,853 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:03:13,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 813 transitions, 20846 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:13,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:13,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:03:13,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:17,262 INFO L129 PetriNetUnfolder]: 2720/9065 cut-off events. [2021-03-25 00:03:17,262 INFO L130 PetriNetUnfolder]: For 448568/450917 co-relation queries the response was YES. [2021-03-25 00:03:17,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94545 conditions, 9065 events. 2720/9065 cut-off events. For 448568/450917 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 102085 event pairs, 706 based on Foata normal form. 523/9302 useless extension candidates. Maximal degree in co-relation 94362. Up to 4401 conditions per place. [2021-03-25 00:03:17,444 INFO L132 encePairwiseOnDemand]: 51/63 looper letters, 690 selfloop transitions, 147 changer transitions 5/927 dead transitions. [2021-03-25 00:03:17,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 927 transitions, 25655 flow [2021-03-25 00:03:17,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 00:03:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 00:03:17,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 482 transitions. [2021-03-25 00:03:17,723 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6955266955266955 [2021-03-25 00:03:17,723 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 482 transitions. [2021-03-25 00:03:17,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 482 transitions. [2021-03-25 00:03:17,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:17,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 482 transitions. [2021-03-25 00:03:17,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 43.81818181818182) internal successors, (482), 11 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:17,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:17,725 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:17,725 INFO L185 Difference]: Start difference. First operand has 474 places, 813 transitions, 20846 flow. Second operand 11 states and 482 transitions. [2021-03-25 00:03:17,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 927 transitions, 25655 flow [2021-03-25 00:03:20,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 927 transitions, 24654 flow, removed 323 selfloop flow, removed 29 redundant places. [2021-03-25 00:03:20,182 INFO L241 Difference]: Finished difference. Result has 440 places, 843 transitions, 21220 flow [2021-03-25 00:03:20,182 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=19997, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=811, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21220, PETRI_PLACES=440, PETRI_TRANSITIONS=843} [2021-03-25 00:03:20,182 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 392 predicate places. [2021-03-25 00:03:20,182 INFO L480 AbstractCegarLoop]: Abstraction has has 440 places, 843 transitions, 21220 flow [2021-03-25 00:03:20,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:20,182 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:20,182 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] [2021-03-25 00:03:20,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-25 00:03:20,183 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:20,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:20,183 INFO L82 PathProgramCache]: Analyzing trace with hash 882210976, now seen corresponding path program 37 times [2021-03-25 00:03:20,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:20,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48909652] [2021-03-25 00:03:20,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:20,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:20,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:03:20,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:20,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:20,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:20,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:20,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:20,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:20,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:20,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:20,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:20,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:03:20,232 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:03:20,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:20,241 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:03:20,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:20,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:20,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:20,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:20,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:20,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:20,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:20,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48909652] [2021-03-25 00:03:20,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:20,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:03:20,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862817785] [2021-03-25 00:03:20,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:03:20,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:20,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:03:20,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:03:20,269 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:03:20,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 843 transitions, 21220 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:20,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:20,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:03:20,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:23,544 INFO L129 PetriNetUnfolder]: 2787/9365 cut-off events. [2021-03-25 00:03:23,544 INFO L130 PetriNetUnfolder]: For 419361/421917 co-relation queries the response was YES. [2021-03-25 00:03:23,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93204 conditions, 9365 events. 2787/9365 cut-off events. For 419361/421917 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 106651 event pairs, 763 based on Foata normal form. 478/9551 useless extension candidates. Maximal degree in co-relation 93036. Up to 4763 conditions per place. [2021-03-25 00:03:23,717 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 713 selfloop transitions, 137 changer transitions 7/942 dead transitions. [2021-03-25 00:03:23,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 942 transitions, 25477 flow [2021-03-25 00:03:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-25 00:03:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-25 00:03:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 546 transitions. [2021-03-25 00:03:23,718 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2021-03-25 00:03:23,718 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 546 transitions. [2021-03-25 00:03:23,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 546 transitions. [2021-03-25 00:03:23,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:23,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 546 transitions. [2021-03-25 00:03:23,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 42.0) internal successors, (546), 13 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:23,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 63.0) internal successors, (882), 14 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:23,720 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 63.0) internal successors, (882), 14 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:23,720 INFO L185 Difference]: Start difference. First operand has 440 places, 843 transitions, 21220 flow. Second operand 13 states and 546 transitions. [2021-03-25 00:03:23,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 942 transitions, 25477 flow [2021-03-25 00:03:26,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 942 transitions, 25103 flow, removed 156 selfloop flow, removed 5 redundant places. [2021-03-25 00:03:26,343 INFO L241 Difference]: Finished difference. Result has 451 places, 870 transitions, 21939 flow [2021-03-25 00:03:26,343 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=20631, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=21939, PETRI_PLACES=451, PETRI_TRANSITIONS=870} [2021-03-25 00:03:26,343 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 403 predicate places. [2021-03-25 00:03:26,343 INFO L480 AbstractCegarLoop]: Abstraction has has 451 places, 870 transitions, 21939 flow [2021-03-25 00:03:26,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:26,344 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:26,344 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] [2021-03-25 00:03:26,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-25 00:03:26,344 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:26,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:26,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1134541894, now seen corresponding path program 38 times [2021-03-25 00:03:26,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:26,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892040883] [2021-03-25 00:03:26,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:26,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:26,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:03:26,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:26,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 00:03:26,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:26,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:03:26,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:26,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:03:26,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:26,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:03:26,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:26,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:26,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:26,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:03:26,424 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-03-25 00:03:26,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:03:26,434 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-03-25 00:03:26,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:26,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:26,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:26,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892040883] [2021-03-25 00:03:26,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:26,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:03:26,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041684020] [2021-03-25 00:03:26,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:03:26,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:26,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:03:26,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:03:26,436 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:03:26,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 870 transitions, 21939 flow. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:26,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:26,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:03:26,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:29,751 INFO L129 PetriNetUnfolder]: 2779/9445 cut-off events. [2021-03-25 00:03:29,751 INFO L130 PetriNetUnfolder]: For 428983/431146 co-relation queries the response was YES. [2021-03-25 00:03:29,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94292 conditions, 9445 events. 2779/9445 cut-off events. For 428983/431146 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 108058 event pairs, 898 based on Foata normal form. 360/9495 useless extension candidates. Maximal degree in co-relation 94122. Up to 5303 conditions per place. [2021-03-25 00:03:29,914 INFO L132 encePairwiseOnDemand]: 51/63 looper letters, 771 selfloop transitions, 80 changer transitions 22/958 dead transitions. [2021-03-25 00:03:29,914 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 958 transitions, 26083 flow [2021-03-25 00:03:29,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:03:29,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:03:29,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 339 transitions. [2021-03-25 00:03:29,915 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6726190476190477 [2021-03-25 00:03:29,915 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 339 transitions. [2021-03-25 00:03:29,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 339 transitions. [2021-03-25 00:03:29,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:29,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 339 transitions. [2021-03-25 00:03:29,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 42.375) internal successors, (339), 8 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:29,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:29,916 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:29,916 INFO L185 Difference]: Start difference. First operand has 451 places, 870 transitions, 21939 flow. Second operand 8 states and 339 transitions. [2021-03-25 00:03:29,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 958 transitions, 26083 flow [2021-03-25 00:03:32,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 958 transitions, 25706 flow, removed 120 selfloop flow, removed 5 redundant places. [2021-03-25 00:03:32,504 INFO L241 Difference]: Finished difference. Result has 456 places, 894 transitions, 22586 flow [2021-03-25 00:03:32,504 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=21534, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=866, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=786, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22586, PETRI_PLACES=456, PETRI_TRANSITIONS=894} [2021-03-25 00:03:32,504 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 408 predicate places. [2021-03-25 00:03:32,504 INFO L480 AbstractCegarLoop]: Abstraction has has 456 places, 894 transitions, 22586 flow [2021-03-25 00:03:32,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:32,505 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:32,505 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] [2021-03-25 00:03:32,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-25 00:03:32,505 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:32,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:32,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1531578586, now seen corresponding path program 39 times [2021-03-25 00:03:32,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:32,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667540934] [2021-03-25 00:03:32,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:32,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:32,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:32,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:32,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:32,531 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 00:03:32,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 00:03:32,541 INFO L142 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-03-25 00:03:32,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 00:03:32,545 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.6 percent of original size [2021-03-25 00:03:32,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 00:03:32,558 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.8 percent of original size [2021-03-25 00:03:32,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 00:03:32,572 INFO L142 QuantifierPusher]: treesize reduction 11, result has 70.3 percent of original size [2021-03-25 00:03:32,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 00:03:32,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:32,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 00:03:32,597 INFO L142 QuantifierPusher]: treesize reduction 10, result has 47.4 percent of original size [2021-03-25 00:03:32,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:03:32,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:32,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:32,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667540934] [2021-03-25 00:03:32,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:32,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:03:32,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869976415] [2021-03-25 00:03:32,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:03:32,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:32,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:03:32,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:03:32,608 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:03:32,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 894 transitions, 22586 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:32,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:32,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:03:32,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:36,432 INFO L129 PetriNetUnfolder]: 2892/9895 cut-off events. [2021-03-25 00:03:36,433 INFO L130 PetriNetUnfolder]: For 444829/446885 co-relation queries the response was YES. [2021-03-25 00:03:36,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98818 conditions, 9895 events. 2892/9895 cut-off events. For 444829/446885 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 113853 event pairs, 529 based on Foata normal form. 815/10425 useless extension candidates. Maximal degree in co-relation 98644. Up to 1749 conditions per place. [2021-03-25 00:03:36,607 INFO L132 encePairwiseOnDemand]: 48/63 looper letters, 409 selfloop transitions, 382 changer transitions 258/1134 dead transitions. [2021-03-25 00:03:36,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 1134 transitions, 31338 flow [2021-03-25 00:03:36,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 00:03:36,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 00:03:36,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 519 transitions. [2021-03-25 00:03:36,608 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6865079365079365 [2021-03-25 00:03:36,608 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 519 transitions. [2021-03-25 00:03:36,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 519 transitions. [2021-03-25 00:03:36,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:36,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 519 transitions. [2021-03-25 00:03:36,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 43.25) internal successors, (519), 12 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:36,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:36,610 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:36,610 INFO L185 Difference]: Start difference. First operand has 456 places, 894 transitions, 22586 flow. Second operand 12 states and 519 transitions. [2021-03-25 00:03:36,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 1134 transitions, 31338 flow [2021-03-25 00:03:39,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 1134 transitions, 31117 flow, removed 33 selfloop flow, removed 5 redundant places. [2021-03-25 00:03:39,473 INFO L241 Difference]: Finished difference. Result has 469 places, 788 transitions, 21043 flow [2021-03-25 00:03:39,474 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=22010, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=879, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=21043, PETRI_PLACES=469, PETRI_TRANSITIONS=788} [2021-03-25 00:03:39,474 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 421 predicate places. [2021-03-25 00:03:39,474 INFO L480 AbstractCegarLoop]: Abstraction has has 469 places, 788 transitions, 21043 flow [2021-03-25 00:03:39,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:39,474 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:39,474 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] [2021-03-25 00:03:39,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-25 00:03:39,475 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:39,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:39,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1384674556, now seen corresponding path program 40 times [2021-03-25 00:03:39,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:39,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287592548] [2021-03-25 00:03:39,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:39,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:39,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:03:39,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:39,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:03:39,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:39,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:03:39,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:39,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:03:39,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:39,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:39,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:39,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:03:39,526 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-03-25 00:03:39,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:03:39,535 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 00:03:39,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:39,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:39,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:39,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287592548] [2021-03-25 00:03:39,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:39,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:03:39,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234259357] [2021-03-25 00:03:39,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:03:39,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:39,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:03:39,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:03:39,537 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:03:39,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 788 transitions, 21043 flow. Second operand has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:39,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:39,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:03:39,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:42,388 INFO L129 PetriNetUnfolder]: 2359/8004 cut-off events. [2021-03-25 00:03:42,388 INFO L130 PetriNetUnfolder]: For 402284/404529 co-relation queries the response was YES. [2021-03-25 00:03:42,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82832 conditions, 8004 events. 2359/8004 cut-off events. For 402284/404529 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 88110 event pairs, 685 based on Foata normal form. 274/8057 useless extension candidates. Maximal degree in co-relation 82652. Up to 4553 conditions per place. [2021-03-25 00:03:42,530 INFO L132 encePairwiseOnDemand]: 55/63 looper letters, 616 selfloop transitions, 45 changer transitions 3/749 dead transitions. [2021-03-25 00:03:42,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 749 transitions, 21394 flow [2021-03-25 00:03:42,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:03:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:03:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 253 transitions. [2021-03-25 00:03:42,531 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6693121693121693 [2021-03-25 00:03:42,531 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 253 transitions. [2021-03-25 00:03:42,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 253 transitions. [2021-03-25 00:03:42,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:42,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 253 transitions. [2021-03-25 00:03:42,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 42.166666666666664) internal successors, (253), 6 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:42,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:42,532 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:42,532 INFO L185 Difference]: Start difference. First operand has 469 places, 788 transitions, 21043 flow. Second operand 6 states and 253 transitions. [2021-03-25 00:03:42,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 749 transitions, 21394 flow [2021-03-25 00:03:45,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 749 transitions, 20439 flow, removed 297 selfloop flow, removed 34 redundant places. [2021-03-25 00:03:45,095 INFO L241 Difference]: Finished difference. Result has 400 places, 739 transitions, 18934 flow [2021-03-25 00:03:45,095 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=18924, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=18934, PETRI_PLACES=400, PETRI_TRANSITIONS=739} [2021-03-25 00:03:45,095 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 352 predicate places. [2021-03-25 00:03:45,095 INFO L480 AbstractCegarLoop]: Abstraction has has 400 places, 739 transitions, 18934 flow [2021-03-25 00:03:45,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:45,095 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:45,095 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] [2021-03-25 00:03:45,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-25 00:03:45,096 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:45,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:45,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1893022904, now seen corresponding path program 41 times [2021-03-25 00:03:45,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:45,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260676721] [2021-03-25 00:03:45,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:45,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:03:45,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:03:45,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:03:45,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:03:45,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:45,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:03:45,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:03:45,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:45,170 INFO L142 QuantifierPusher]: treesize reduction 7, result has 73.1 percent of original size [2021-03-25 00:03:45,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:03:45,184 INFO L142 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-03-25 00:03:45,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:03:45,208 INFO L142 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-03-25 00:03:45,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:03:45,228 INFO L142 QuantifierPusher]: treesize reduction 24, result has 36.8 percent of original size [2021-03-25 00:03:45,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:03:45,248 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 00:03:45,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:45,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:45,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260676721] [2021-03-25 00:03:45,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:45,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-25 00:03:45,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762413498] [2021-03-25 00:03:45,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 00:03:45,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:45,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 00:03:45,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-03-25 00:03:45,251 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:03:45,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 739 transitions, 18934 flow. Second operand has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:45,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:45,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:03:45,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:48,212 INFO L129 PetriNetUnfolder]: 2222/7623 cut-off events. [2021-03-25 00:03:48,212 INFO L130 PetriNetUnfolder]: For 328707/330833 co-relation queries the response was YES. [2021-03-25 00:03:48,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74264 conditions, 7623 events. 2222/7623 cut-off events. For 328707/330833 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 83505 event pairs, 564 based on Foata normal form. 336/7751 useless extension candidates. Maximal degree in co-relation 74105. Up to 3909 conditions per place. [2021-03-25 00:03:48,574 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 499 selfloop transitions, 172 changer transitions 57/813 dead transitions. [2021-03-25 00:03:48,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 813 transitions, 22393 flow [2021-03-25 00:03:48,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-25 00:03:48,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-25 00:03:48,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 667 transitions. [2021-03-25 00:03:48,576 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6617063492063492 [2021-03-25 00:03:48,576 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 667 transitions. [2021-03-25 00:03:48,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 667 transitions. [2021-03-25 00:03:48,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:48,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 667 transitions. [2021-03-25 00:03:48,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 41.6875) internal successors, (667), 16 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:48,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 63.0) internal successors, (1071), 17 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:48,578 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 63.0) internal successors, (1071), 17 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:48,578 INFO L185 Difference]: Start difference. First operand has 400 places, 739 transitions, 18934 flow. Second operand 16 states and 667 transitions. [2021-03-25 00:03:48,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 813 transitions, 22393 flow [2021-03-25 00:03:50,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 813 transitions, 22151 flow, removed 14 selfloop flow, removed 11 redundant places. [2021-03-25 00:03:50,396 INFO L241 Difference]: Finished difference. Result has 410 places, 717 transitions, 18549 flow [2021-03-25 00:03:50,397 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=18160, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=18549, PETRI_PLACES=410, PETRI_TRANSITIONS=717} [2021-03-25 00:03:50,397 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 362 predicate places. [2021-03-25 00:03:50,397 INFO L480 AbstractCegarLoop]: Abstraction has has 410 places, 717 transitions, 18549 flow [2021-03-25 00:03:50,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:50,397 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:50,397 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] [2021-03-25 00:03:50,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-25 00:03:50,397 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:50,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:50,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1172164334, now seen corresponding path program 42 times [2021-03-25 00:03:50,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:50,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599856668] [2021-03-25 00:03:50,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:50,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:50,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:03:50,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:50,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:03:50,434 INFO L142 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-03-25 00:03:50,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:03:50,438 INFO L142 QuantifierPusher]: treesize reduction 7, result has 58.8 percent of original size [2021-03-25 00:03:50,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:50,441 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:03:50,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:50,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:50,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:03:50,452 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-25 00:03:50,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:03:50,461 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-25 00:03:50,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:50,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:50,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:03:50,481 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-03-25 00:03:50,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:03:50,493 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 00:03:50,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:50,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:50,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:50,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599856668] [2021-03-25 00:03:50,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:50,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:03:50,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366835214] [2021-03-25 00:03:50,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:03:50,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:50,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:03:50,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:03:50,495 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:03:50,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 717 transitions, 18549 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:50,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:50,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:03:50,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:52,882 INFO L129 PetriNetUnfolder]: 1843/6833 cut-off events. [2021-03-25 00:03:52,883 INFO L130 PetriNetUnfolder]: For 295182/296653 co-relation queries the response was YES. [2021-03-25 00:03:53,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66814 conditions, 6833 events. 1843/6833 cut-off events. For 295182/296653 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 75537 event pairs, 616 based on Foata normal form. 202/6851 useless extension candidates. Maximal degree in co-relation 66653. Up to 3668 conditions per place. [2021-03-25 00:03:53,039 INFO L132 encePairwiseOnDemand]: 53/63 looper letters, 529 selfloop transitions, 96 changer transitions 3/713 dead transitions. [2021-03-25 00:03:53,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 713 transitions, 19671 flow [2021-03-25 00:03:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:03:53,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:03:53,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 330 transitions. [2021-03-25 00:03:53,041 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2021-03-25 00:03:53,041 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 330 transitions. [2021-03-25 00:03:53,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 330 transitions. [2021-03-25 00:03:53,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:53,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 330 transitions. [2021-03-25 00:03:53,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 41.25) internal successors, (330), 8 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:53,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:53,043 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:53,043 INFO L185 Difference]: Start difference. First operand has 410 places, 717 transitions, 18549 flow. Second operand 8 states and 330 transitions. [2021-03-25 00:03:53,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 713 transitions, 19671 flow [2021-03-25 00:03:54,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 713 transitions, 19446 flow, removed 92 selfloop flow, removed 2 redundant places. [2021-03-25 00:03:54,838 INFO L241 Difference]: Finished difference. Result has 417 places, 693 transitions, 17931 flow [2021-03-25 00:03:54,838 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17620, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17931, PETRI_PLACES=417, PETRI_TRANSITIONS=693} [2021-03-25 00:03:54,838 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 369 predicate places. [2021-03-25 00:03:54,839 INFO L480 AbstractCegarLoop]: Abstraction has has 417 places, 693 transitions, 17931 flow [2021-03-25 00:03:54,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:54,839 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:54,839 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] [2021-03-25 00:03:54,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-25 00:03:54,839 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:54,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:54,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1603707652, now seen corresponding path program 43 times [2021-03-25 00:03:54,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:54,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142398200] [2021-03-25 00:03:54,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:54,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:54,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:03:54,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:54,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:03:54,875 INFO L142 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-03-25 00:03:54,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:03:54,878 INFO L142 QuantifierPusher]: treesize reduction 7, result has 58.8 percent of original size [2021-03-25 00:03:54,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:54,882 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:03:54,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:54,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:54,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:03:54,893 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-25 00:03:54,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:03:54,901 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-25 00:03:54,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:54,910 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-03-25 00:03:54,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:54,925 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-03-25 00:03:54,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:03:54,936 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 00:03:54,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:54,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:54,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:54,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142398200] [2021-03-25 00:03:54,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:54,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:03:54,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510704646] [2021-03-25 00:03:54,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:03:54,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:54,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:03:54,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:03:54,940 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:03:54,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 693 transitions, 17931 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:54,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:54,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:03:54,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:57,286 INFO L129 PetriNetUnfolder]: 1775/6617 cut-off events. [2021-03-25 00:03:57,287 INFO L130 PetriNetUnfolder]: For 281963/283408 co-relation queries the response was YES. [2021-03-25 00:03:57,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64787 conditions, 6617 events. 1775/6617 cut-off events. For 281963/283408 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 72775 event pairs, 612 based on Foata normal form. 179/6621 useless extension candidates. Maximal degree in co-relation 64624. Up to 3563 conditions per place. [2021-03-25 00:03:57,398 INFO L132 encePairwiseOnDemand]: 53/63 looper letters, 496 selfloop transitions, 87 changer transitions 30/698 dead transitions. [2021-03-25 00:03:57,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 698 transitions, 19246 flow [2021-03-25 00:03:57,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:03:57,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:03:57,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 328 transitions. [2021-03-25 00:03:57,399 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2021-03-25 00:03:57,399 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 328 transitions. [2021-03-25 00:03:57,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 328 transitions. [2021-03-25 00:03:57,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:57,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 328 transitions. [2021-03-25 00:03:57,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 41.0) internal successors, (328), 8 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,400 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,400 INFO L185 Difference]: Start difference. First operand has 417 places, 693 transitions, 17931 flow. Second operand 8 states and 328 transitions. [2021-03-25 00:03:57,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 698 transitions, 19246 flow [2021-03-25 00:03:59,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 698 transitions, 19021 flow, removed 30 selfloop flow, removed 6 redundant places. [2021-03-25 00:03:59,094 INFO L241 Difference]: Finished difference. Result has 419 places, 657 transitions, 16825 flow [2021-03-25 00:03:59,095 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17415, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16825, PETRI_PLACES=419, PETRI_TRANSITIONS=657} [2021-03-25 00:03:59,095 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 371 predicate places. [2021-03-25 00:03:59,095 INFO L480 AbstractCegarLoop]: Abstraction has has 419 places, 657 transitions, 16825 flow [2021-03-25 00:03:59,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,095 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:59,095 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] [2021-03-25 00:03:59,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-25 00:03:59,095 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:59,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:59,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1841841092, now seen corresponding path program 44 times [2021-03-25 00:03:59,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:59,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846623281] [2021-03-25 00:03:59,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:59,115 INFO L142 QuantifierPusher]: treesize reduction 34, result has 45.2 percent of original size [2021-03-25 00:03:59,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-25 00:03:59,134 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 00:03:59,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:03:59,138 INFO L142 QuantifierPusher]: treesize reduction 54, result has 36.5 percent of original size [2021-03-25 00:03:59,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 00:03:59,142 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-03-25 00:03:59,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:59,145 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:03:59,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:59,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:03:59,159 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-25 00:03:59,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:03:59,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:03:59,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:03:59,185 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 00:03:59,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:59,195 INFO L142 QuantifierPusher]: treesize reduction 16, result has 40.7 percent of original size [2021-03-25 00:03:59,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 00:03:59,207 INFO L142 QuantifierPusher]: treesize reduction 13, result has 7.1 percent of original size [2021-03-25 00:03:59,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:59,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:59,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846623281] [2021-03-25 00:03:59,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:59,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:03:59,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137159330] [2021-03-25 00:03:59,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:03:59,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:59,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:03:59,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:03:59,210 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:03:59,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 657 transitions, 16825 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:59,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:03:59,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:01,397 INFO L129 PetriNetUnfolder]: 1743/6602 cut-off events. [2021-03-25 00:04:01,398 INFO L130 PetriNetUnfolder]: For 277265/278697 co-relation queries the response was YES. [2021-03-25 00:04:01,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64119 conditions, 6602 events. 1743/6602 cut-off events. For 277265/278697 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 73058 event pairs, 599 based on Foata normal form. 213/6643 useless extension candidates. Maximal degree in co-relation 63956. Up to 3308 conditions per place. [2021-03-25 00:04:01,696 INFO L132 encePairwiseOnDemand]: 51/63 looper letters, 480 selfloop transitions, 132 changer transitions 14/711 dead transitions. [2021-03-25 00:04:01,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 711 transitions, 19469 flow [2021-03-25 00:04:01,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 00:04:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 00:04:01,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 417 transitions. [2021-03-25 00:04:01,697 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6619047619047619 [2021-03-25 00:04:01,697 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 417 transitions. [2021-03-25 00:04:01,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 417 transitions. [2021-03-25 00:04:01,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:01,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 417 transitions. [2021-03-25 00:04:01,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 41.7) internal successors, (417), 10 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,698 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,698 INFO L185 Difference]: Start difference. First operand has 419 places, 657 transitions, 16825 flow. Second operand 10 states and 417 transitions. [2021-03-25 00:04:01,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 711 transitions, 19469 flow [2021-03-25 00:04:03,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 711 transitions, 19293 flow, removed 17 selfloop flow, removed 4 redundant places. [2021-03-25 00:04:03,340 INFO L241 Difference]: Finished difference. Result has 428 places, 658 transitions, 16999 flow [2021-03-25 00:04:03,340 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16655, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16999, PETRI_PLACES=428, PETRI_TRANSITIONS=658} [2021-03-25 00:04:03,341 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 380 predicate places. [2021-03-25 00:04:03,341 INFO L480 AbstractCegarLoop]: Abstraction has has 428 places, 658 transitions, 16999 flow [2021-03-25 00:04:03,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:03,341 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:03,341 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] [2021-03-25 00:04:03,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-25 00:04:03,341 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:03,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:03,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1756205694, now seen corresponding path program 45 times [2021-03-25 00:04:03,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:03,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423090835] [2021-03-25 00:04:03,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:03,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:03,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:03,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:03,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:03,375 INFO L142 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-03-25 00:04:03,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:03,379 INFO L142 QuantifierPusher]: treesize reduction 7, result has 58.8 percent of original size [2021-03-25 00:04:03,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:03,382 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:04:03,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:03,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:03,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:04:03,393 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-25 00:04:03,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:03,408 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-25 00:04:03,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:03,418 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-03-25 00:04:03,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:03,432 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-03-25 00:04:03,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:03,446 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 00:04:03,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:03,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:03,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:03,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423090835] [2021-03-25 00:04:03,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:03,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:04:03,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379156930] [2021-03-25 00:04:03,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:04:03,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:03,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:04:03,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:04:03,448 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:03,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 658 transitions, 16999 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:03,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:03,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:03,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:05,542 INFO L129 PetriNetUnfolder]: 1686/6457 cut-off events. [2021-03-25 00:04:05,542 INFO L130 PetriNetUnfolder]: For 275186/276613 co-relation queries the response was YES. [2021-03-25 00:04:05,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63060 conditions, 6457 events. 1686/6457 cut-off events. For 275186/276613 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 71359 event pairs, 602 based on Foata normal form. 191/6480 useless extension candidates. Maximal degree in co-relation 62893. Up to 3424 conditions per place. [2021-03-25 00:04:05,657 INFO L132 encePairwiseOnDemand]: 53/63 looper letters, 418 selfloop transitions, 105 changer transitions 52/660 dead transitions. [2021-03-25 00:04:05,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 660 transitions, 18202 flow [2021-03-25 00:04:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:04:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:04:05,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 368 transitions. [2021-03-25 00:04:05,658 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6490299823633157 [2021-03-25 00:04:05,658 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 368 transitions. [2021-03-25 00:04:05,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 368 transitions. [2021-03-25 00:04:05,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:05,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 368 transitions. [2021-03-25 00:04:05,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.888888888888886) internal successors, (368), 9 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:05,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:05,659 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:05,659 INFO L185 Difference]: Start difference. First operand has 428 places, 658 transitions, 16999 flow. Second operand 9 states and 368 transitions. [2021-03-25 00:04:05,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 660 transitions, 18202 flow [2021-03-25 00:04:07,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 660 transitions, 17904 flow, removed 50 selfloop flow, removed 4 redundant places. [2021-03-25 00:04:07,554 INFO L241 Difference]: Finished difference. Result has 433 places, 601 transitions, 15363 flow [2021-03-25 00:04:07,554 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16419, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15363, PETRI_PLACES=433, PETRI_TRANSITIONS=601} [2021-03-25 00:04:07,554 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 385 predicate places. [2021-03-25 00:04:07,554 INFO L480 AbstractCegarLoop]: Abstraction has has 433 places, 601 transitions, 15363 flow [2021-03-25 00:04:07,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:07,554 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:07,554 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] [2021-03-25 00:04:07,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-25 00:04:07,555 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:07,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:07,555 INFO L82 PathProgramCache]: Analyzing trace with hash -191261272, now seen corresponding path program 46 times [2021-03-25 00:04:07,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:07,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318148831] [2021-03-25 00:04:07,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:07,578 INFO L142 QuantifierPusher]: treesize reduction 43, result has 41.9 percent of original size [2021-03-25 00:04:07,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 00:04:07,596 INFO L142 QuantifierPusher]: treesize reduction 3, result has 84.2 percent of original size [2021-03-25 00:04:07,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:07,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:07,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:07,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:07,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:07,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:07,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:07,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:07,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:07,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:07,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:07,645 INFO L142 QuantifierPusher]: treesize reduction 29, result has 47.3 percent of original size [2021-03-25 00:04:07,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 00:04:07,668 INFO L142 QuantifierPusher]: treesize reduction 7, result has 80.0 percent of original size [2021-03-25 00:04:07,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-25 00:04:07,697 INFO L142 QuantifierPusher]: treesize reduction 6, result has 83.8 percent of original size [2021-03-25 00:04:07,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 00:04:07,725 INFO L142 QuantifierPusher]: treesize reduction 37, result has 35.1 percent of original size [2021-03-25 00:04:07,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 00:04:07,742 INFO L142 QuantifierPusher]: treesize reduction 23, result has 25.8 percent of original size [2021-03-25 00:04:07,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 00:04:07,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:07,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:07,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:07,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:07,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:07,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318148831] [2021-03-25 00:04:07,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:07,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-25 00:04:07,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523763142] [2021-03-25 00:04:07,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 00:04:07,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:07,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 00:04:07,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-03-25 00:04:07,756 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:07,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 601 transitions, 15363 flow. Second operand has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:07,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:07,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:07,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:10,222 INFO L129 PetriNetUnfolder]: 1609/6345 cut-off events. [2021-03-25 00:04:10,223 INFO L130 PetriNetUnfolder]: For 272392/273727 co-relation queries the response was YES. [2021-03-25 00:04:10,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61738 conditions, 6345 events. 1609/6345 cut-off events. For 272392/273727 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 70614 event pairs, 504 based on Foata normal form. 185/6372 useless extension candidates. Maximal degree in co-relation 61570. Up to 3083 conditions per place. [2021-03-25 00:04:10,333 INFO L132 encePairwiseOnDemand]: 47/63 looper letters, 438 selfloop transitions, 92 changer transitions 78/693 dead transitions. [2021-03-25 00:04:10,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 693 transitions, 19088 flow [2021-03-25 00:04:10,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-25 00:04:10,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-25 00:04:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 647 transitions. [2021-03-25 00:04:10,335 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6418650793650794 [2021-03-25 00:04:10,335 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 647 transitions. [2021-03-25 00:04:10,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 647 transitions. [2021-03-25 00:04:10,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:10,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 647 transitions. [2021-03-25 00:04:10,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 40.4375) internal successors, (647), 16 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:10,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 63.0) internal successors, (1071), 17 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:10,337 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 63.0) internal successors, (1071), 17 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:10,337 INFO L185 Difference]: Start difference. First operand has 433 places, 601 transitions, 15363 flow. Second operand 16 states and 647 transitions. [2021-03-25 00:04:10,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 693 transitions, 19088 flow [2021-03-25 00:04:12,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 693 transitions, 18657 flow, removed 53 selfloop flow, removed 13 redundant places. [2021-03-25 00:04:12,094 INFO L241 Difference]: Finished difference. Result has 436 places, 575 transitions, 14449 flow [2021-03-25 00:04:12,094 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=14779, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=14449, PETRI_PLACES=436, PETRI_TRANSITIONS=575} [2021-03-25 00:04:12,094 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 388 predicate places. [2021-03-25 00:04:12,094 INFO L480 AbstractCegarLoop]: Abstraction has has 436 places, 575 transitions, 14449 flow [2021-03-25 00:04:12,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:12,095 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:12,095 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] [2021-03-25 00:04:12,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-25 00:04:12,095 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:12,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:12,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1490788394, now seen corresponding path program 47 times [2021-03-25 00:04:12,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:12,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828929663] [2021-03-25 00:04:12,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:12,112 INFO L142 QuantifierPusher]: treesize reduction 25, result has 51.0 percent of original size [2021-03-25 00:04:12,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 00:04:12,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:12,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:12,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:12,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:12,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:12,157 INFO L142 QuantifierPusher]: treesize reduction 35, result has 16.7 percent of original size [2021-03-25 00:04:12,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:12,164 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 00:04:12,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:12,172 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-03-25 00:04:12,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:12,186 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 00:04:12,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:12,195 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-03-25 00:04:12,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:12,196 INFO L142 QuantifierPusher]: treesize reduction 34, result has 27.7 percent of original size [2021-03-25 00:04:12,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:12,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:12,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:12,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828929663] [2021-03-25 00:04:12,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:12,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:04:12,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656784254] [2021-03-25 00:04:12,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:04:12,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:12,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:04:12,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:04:12,199 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:12,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 575 transitions, 14449 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:12,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:12,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:12,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:14,370 INFO L129 PetriNetUnfolder]: 1556/6120 cut-off events. [2021-03-25 00:04:14,370 INFO L130 PetriNetUnfolder]: For 271677/273524 co-relation queries the response was YES. [2021-03-25 00:04:14,468 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60195 conditions, 6120 events. 1556/6120 cut-off events. For 271677/273524 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 67530 event pairs, 475 based on Foata normal form. 264/6239 useless extension candidates. Maximal degree in co-relation 60025. Up to 2837 conditions per place. [2021-03-25 00:04:14,487 INFO L132 encePairwiseOnDemand]: 46/63 looper letters, 394 selfloop transitions, 105 changer transitions 54/638 dead transitions. [2021-03-25 00:04:14,487 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 638 transitions, 17399 flow [2021-03-25 00:04:14,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-25 00:04:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-25 00:04:14,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 585 transitions. [2021-03-25 00:04:14,488 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2021-03-25 00:04:14,488 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 585 transitions. [2021-03-25 00:04:14,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 585 transitions. [2021-03-25 00:04:14,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:14,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 585 transitions. [2021-03-25 00:04:14,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 41.785714285714285) internal successors, (585), 14 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:14,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:14,490 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:14,490 INFO L185 Difference]: Start difference. First operand has 436 places, 575 transitions, 14449 flow. Second operand 14 states and 585 transitions. [2021-03-25 00:04:14,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 638 transitions, 17399 flow [2021-03-25 00:04:16,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 638 transitions, 16836 flow, removed 150 selfloop flow, removed 19 redundant places. [2021-03-25 00:04:16,241 INFO L241 Difference]: Finished difference. Result has 438 places, 555 transitions, 13840 flow [2021-03-25 00:04:16,242 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=13714, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13840, PETRI_PLACES=438, PETRI_TRANSITIONS=555} [2021-03-25 00:04:16,242 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 390 predicate places. [2021-03-25 00:04:16,242 INFO L480 AbstractCegarLoop]: Abstraction has has 438 places, 555 transitions, 13840 flow [2021-03-25 00:04:16,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:16,242 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:16,242 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] [2021-03-25 00:04:16,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-25 00:04:16,242 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:16,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:16,243 INFO L82 PathProgramCache]: Analyzing trace with hash 570365098, now seen corresponding path program 48 times [2021-03-25 00:04:16,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:16,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412822772] [2021-03-25 00:04:16,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:16,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:16,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:16,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:16,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:16,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:16,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:16,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:16,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:16,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:16,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:16,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:16,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:16,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:16,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:16,324 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-03-25 00:04:16,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:16,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:16,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:16,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:16,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:16,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412822772] [2021-03-25 00:04:16,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:16,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:04:16,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721295596] [2021-03-25 00:04:16,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:04:16,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:16,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:04:16,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:04:16,343 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:16,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 555 transitions, 13840 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:16,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:16,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:16,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:18,661 INFO L129 PetriNetUnfolder]: 1594/6519 cut-off events. [2021-03-25 00:04:18,662 INFO L130 PetriNetUnfolder]: For 286312/288022 co-relation queries the response was YES. [2021-03-25 00:04:18,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63144 conditions, 6519 events. 1594/6519 cut-off events. For 286312/288022 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 73974 event pairs, 473 based on Foata normal form. 291/6669 useless extension candidates. Maximal degree in co-relation 62973. Up to 2802 conditions per place. [2021-03-25 00:04:18,788 INFO L132 encePairwiseOnDemand]: 48/63 looper letters, 397 selfloop transitions, 146 changer transitions 58/686 dead transitions. [2021-03-25 00:04:18,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 686 transitions, 18709 flow [2021-03-25 00:04:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-25 00:04:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-25 00:04:18,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 600 transitions. [2021-03-25 00:04:18,789 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6802721088435374 [2021-03-25 00:04:18,789 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 600 transitions. [2021-03-25 00:04:18,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 600 transitions. [2021-03-25 00:04:18,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:18,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 600 transitions. [2021-03-25 00:04:18,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 42.857142857142854) internal successors, (600), 14 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:18,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:18,791 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:18,791 INFO L185 Difference]: Start difference. First operand has 438 places, 555 transitions, 13840 flow. Second operand 14 states and 600 transitions. [2021-03-25 00:04:18,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 686 transitions, 18709 flow [2021-03-25 00:04:20,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 686 transitions, 17941 flow, removed 175 selfloop flow, removed 15 redundant places. [2021-03-25 00:04:20,735 INFO L241 Difference]: Finished difference. Result has 436 places, 568 transitions, 14178 flow [2021-03-25 00:04:20,736 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=13126, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14178, PETRI_PLACES=436, PETRI_TRANSITIONS=568} [2021-03-25 00:04:20,736 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 388 predicate places. [2021-03-25 00:04:20,736 INFO L480 AbstractCegarLoop]: Abstraction has has 436 places, 568 transitions, 14178 flow [2021-03-25 00:04:20,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:20,736 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:20,736 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] [2021-03-25 00:04:20,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-25 00:04:20,736 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:20,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:20,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1007570768, now seen corresponding path program 49 times [2021-03-25 00:04:20,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:20,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371316276] [2021-03-25 00:04:20,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:20,761 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-03-25 00:04:20,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-25 00:04:20,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:20,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 00:04:20,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:20,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:20,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:20,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:20,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:20,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 00:04:20,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:20,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 00:04:20,824 INFO L142 QuantifierPusher]: treesize reduction 7, result has 87.7 percent of original size [2021-03-25 00:04:20,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-25 00:04:20,870 INFO L142 QuantifierPusher]: treesize reduction 15, result has 75.8 percent of original size [2021-03-25 00:04:20,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-25 00:04:20,918 INFO L142 QuantifierPusher]: treesize reduction 51, result has 26.1 percent of original size [2021-03-25 00:04:20,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 00:04:20,934 INFO L142 QuantifierPusher]: treesize reduction 26, result has 58.1 percent of original size [2021-03-25 00:04:20,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 00:04:20,958 INFO L142 QuantifierPusher]: treesize reduction 23, result has 63.5 percent of original size [2021-03-25 00:04:20,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-25 00:04:21,002 INFO L142 QuantifierPusher]: treesize reduction 15, result has 62.5 percent of original size [2021-03-25 00:04:21,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 00:04:21,027 INFO L142 QuantifierPusher]: treesize reduction 21, result has 48.8 percent of original size [2021-03-25 00:04:21,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 00:04:21,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:21,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:21,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371316276] [2021-03-25 00:04:21,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:21,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-25 00:04:21,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573265632] [2021-03-25 00:04:21,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 00:04:21,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:21,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 00:04:21,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-03-25 00:04:21,052 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:21,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 568 transitions, 14178 flow. Second operand has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:21,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:21,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:21,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:23,623 INFO L129 PetriNetUnfolder]: 1432/5971 cut-off events. [2021-03-25 00:04:23,624 INFO L130 PetriNetUnfolder]: For 253676/255064 co-relation queries the response was YES. [2021-03-25 00:04:23,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55988 conditions, 5971 events. 1432/5971 cut-off events. For 253676/255064 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 67295 event pairs, 402 based on Foata normal form. 536/6364 useless extension candidates. Maximal degree in co-relation 55815. Up to 2093 conditions per place. [2021-03-25 00:04:23,730 INFO L132 encePairwiseOnDemand]: 50/63 looper letters, 344 selfloop transitions, 149 changer transitions 82/658 dead transitions. [2021-03-25 00:04:23,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 658 transitions, 17955 flow [2021-03-25 00:04:23,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-25 00:04:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-03-25 00:04:23,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 749 transitions. [2021-03-25 00:04:23,731 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6604938271604939 [2021-03-25 00:04:23,731 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 749 transitions. [2021-03-25 00:04:23,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 749 transitions. [2021-03-25 00:04:23,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:23,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 749 transitions. [2021-03-25 00:04:23,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 41.611111111111114) internal successors, (749), 18 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:23,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 63.0) internal successors, (1197), 19 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:23,733 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 63.0) internal successors, (1197), 19 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:23,733 INFO L185 Difference]: Start difference. First operand has 436 places, 568 transitions, 14178 flow. Second operand 18 states and 749 transitions. [2021-03-25 00:04:23,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 658 transitions, 17955 flow [2021-03-25 00:04:25,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 658 transitions, 17163 flow, removed 168 selfloop flow, removed 19 redundant places. [2021-03-25 00:04:25,381 INFO L241 Difference]: Finished difference. Result has 433 places, 525 transitions, 12902 flow [2021-03-25 00:04:25,381 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=12998, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=12902, PETRI_PLACES=433, PETRI_TRANSITIONS=525} [2021-03-25 00:04:25,381 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 385 predicate places. [2021-03-25 00:04:25,382 INFO L480 AbstractCegarLoop]: Abstraction has has 433 places, 525 transitions, 12902 flow [2021-03-25 00:04:25,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:25,382 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:25,382 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] [2021-03-25 00:04:25,382 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-25 00:04:25,382 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:25,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:25,382 INFO L82 PathProgramCache]: Analyzing trace with hash -428453764, now seen corresponding path program 50 times [2021-03-25 00:04:25,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:25,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247360229] [2021-03-25 00:04:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:25,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:25,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:25,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:25,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:25,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:25,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:25,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:25,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:25,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:25,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:04:25,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:25,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:25,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:25,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:04:25,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:25,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:25,450 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-03-25 00:04:25,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:25,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:25,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:25,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:25,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:25,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247360229] [2021-03-25 00:04:25,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:25,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:04:25,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971665216] [2021-03-25 00:04:25,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:04:25,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:25,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:04:25,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:04:25,470 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:25,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 525 transitions, 12902 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:25,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:25,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:25,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:27,195 INFO L129 PetriNetUnfolder]: 1256/5268 cut-off events. [2021-03-25 00:04:27,195 INFO L130 PetriNetUnfolder]: For 211799/212868 co-relation queries the response was YES. [2021-03-25 00:04:27,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48674 conditions, 5268 events. 1256/5268 cut-off events. For 211799/212868 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 58033 event pairs, 354 based on Foata normal form. 111/5272 useless extension candidates. Maximal degree in co-relation 48504. Up to 2552 conditions per place. [2021-03-25 00:04:27,275 INFO L132 encePairwiseOnDemand]: 53/63 looper letters, 424 selfloop transitions, 28 changer transitions 28/563 dead transitions. [2021-03-25 00:04:27,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 563 transitions, 14618 flow [2021-03-25 00:04:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 00:04:27,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 00:04:27,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 411 transitions. [2021-03-25 00:04:27,276 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2021-03-25 00:04:27,276 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 411 transitions. [2021-03-25 00:04:27,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 411 transitions. [2021-03-25 00:04:27,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:27,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 411 transitions. [2021-03-25 00:04:27,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 41.1) internal successors, (411), 10 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:27,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:27,278 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:27,278 INFO L185 Difference]: Start difference. First operand has 433 places, 525 transitions, 12902 flow. Second operand 10 states and 411 transitions. [2021-03-25 00:04:27,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 563 transitions, 14618 flow [2021-03-25 00:04:28,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 563 transitions, 13686 flow, removed 260 selfloop flow, removed 18 redundant places. [2021-03-25 00:04:28,471 INFO L241 Difference]: Finished difference. Result has 415 places, 519 transitions, 11936 flow [2021-03-25 00:04:28,472 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=11980, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11936, PETRI_PLACES=415, PETRI_TRANSITIONS=519} [2021-03-25 00:04:28,472 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 367 predicate places. [2021-03-25 00:04:28,472 INFO L480 AbstractCegarLoop]: Abstraction has has 415 places, 519 transitions, 11936 flow [2021-03-25 00:04:28,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:28,472 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:28,472 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] [2021-03-25 00:04:28,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-25 00:04:28,472 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:28,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:28,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1477864534, now seen corresponding path program 51 times [2021-03-25 00:04:28,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:28,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531178550] [2021-03-25 00:04:28,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:28,487 INFO L142 QuantifierPusher]: treesize reduction 24, result has 56.4 percent of original size [2021-03-25 00:04:28,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 00:04:28,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:28,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:28,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:28,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:28,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:28,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:28,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:28,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:28,529 INFO L142 QuantifierPusher]: treesize reduction 7, result has 58.8 percent of original size [2021-03-25 00:04:28,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:28,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:28,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:28,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:28,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:28,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:28,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:04:28,561 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-25 00:04:28,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:28,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:28,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:28,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:28,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:28,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531178550] [2021-03-25 00:04:28,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:28,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-25 00:04:28,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647046298] [2021-03-25 00:04:28,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 00:04:28,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:28,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 00:04:28,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-03-25 00:04:28,586 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:28,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 519 transitions, 11936 flow. Second operand has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:28,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:28,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:28,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:29,980 INFO L129 PetriNetUnfolder]: 1135/4993 cut-off events. [2021-03-25 00:04:29,980 INFO L130 PetriNetUnfolder]: For 171216/172127 co-relation queries the response was YES. [2021-03-25 00:04:30,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43819 conditions, 4993 events. 1135/4993 cut-off events. For 171216/172127 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 55086 event pairs, 319 based on Foata normal form. 81/4987 useless extension candidates. Maximal degree in co-relation 43659. Up to 2541 conditions per place. [2021-03-25 00:04:30,072 INFO L132 encePairwiseOnDemand]: 53/63 looper letters, 421 selfloop transitions, 21 changer transitions 21/546 dead transitions. [2021-03-25 00:04:30,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 546 transitions, 13519 flow [2021-03-25 00:04:30,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 00:04:30,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 00:04:30,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 437 transitions. [2021-03-25 00:04:30,073 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6305916305916306 [2021-03-25 00:04:30,073 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 437 transitions. [2021-03-25 00:04:30,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 437 transitions. [2021-03-25 00:04:30,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:30,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 437 transitions. [2021-03-25 00:04:30,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 39.72727272727273) internal successors, (437), 11 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:30,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:30,074 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:30,074 INFO L185 Difference]: Start difference. First operand has 415 places, 519 transitions, 11936 flow. Second operand 11 states and 437 transitions. [2021-03-25 00:04:30,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 546 transitions, 13519 flow [2021-03-25 00:04:31,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 546 transitions, 13325 flow, removed 65 selfloop flow, removed 9 redundant places. [2021-03-25 00:04:31,169 INFO L241 Difference]: Finished difference. Result has 417 places, 516 transitions, 11759 flow [2021-03-25 00:04:31,170 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=11786, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11759, PETRI_PLACES=417, PETRI_TRANSITIONS=516} [2021-03-25 00:04:31,170 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 369 predicate places. [2021-03-25 00:04:31,170 INFO L480 AbstractCegarLoop]: Abstraction has has 417 places, 516 transitions, 11759 flow [2021-03-25 00:04:31,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:31,170 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:31,170 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] [2021-03-25 00:04:31,170 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-25 00:04:31,170 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:31,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:31,171 INFO L82 PathProgramCache]: Analyzing trace with hash 169473424, now seen corresponding path program 52 times [2021-03-25 00:04:31,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:31,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616849435] [2021-03-25 00:04:31,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:31,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:31,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:31,212 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-25 00:04:31,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:31,215 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-25 00:04:31,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:31,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:31,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:31,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:31,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:31,246 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-03-25 00:04:31,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:31,260 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-03-25 00:04:31,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:31,268 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-25 00:04:31,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:31,280 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-25 00:04:31,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:31,289 INFO L142 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-03-25 00:04:31,289 INFO L147 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size 9 [2021-03-25 00:04:31,302 INFO L142 QuantifierPusher]: treesize reduction 11, result has 8.3 percent of original size [2021-03-25 00:04:31,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:31,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:31,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:31,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616849435] [2021-03-25 00:04:31,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:31,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:04:31,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438852156] [2021-03-25 00:04:31,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:04:31,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:31,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:04:31,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:04:31,305 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:31,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 516 transitions, 11759 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:31,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:31,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:31,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:33,058 INFO L129 PetriNetUnfolder]: 1216/5333 cut-off events. [2021-03-25 00:04:33,059 INFO L130 PetriNetUnfolder]: For 182645/183713 co-relation queries the response was YES. [2021-03-25 00:04:33,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46968 conditions, 5333 events. 1216/5333 cut-off events. For 182645/183713 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 59671 event pairs, 288 based on Foata normal form. 219/5459 useless extension candidates. Maximal degree in co-relation 46808. Up to 2319 conditions per place. [2021-03-25 00:04:33,138 INFO L132 encePairwiseOnDemand]: 48/63 looper letters, 352 selfloop transitions, 166 changer transitions 43/644 dead transitions. [2021-03-25 00:04:33,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 644 transitions, 16304 flow [2021-03-25 00:04:33,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-25 00:04:33,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-25 00:04:33,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 544 transitions. [2021-03-25 00:04:33,139 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6642246642246642 [2021-03-25 00:04:33,140 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 544 transitions. [2021-03-25 00:04:33,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 544 transitions. [2021-03-25 00:04:33,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:33,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 544 transitions. [2021-03-25 00:04:33,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 41.84615384615385) internal successors, (544), 13 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:33,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 63.0) internal successors, (882), 14 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:33,141 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 63.0) internal successors, (882), 14 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:33,141 INFO L185 Difference]: Start difference. First operand has 417 places, 516 transitions, 11759 flow. Second operand 13 states and 544 transitions. [2021-03-25 00:04:33,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 644 transitions, 16304 flow [2021-03-25 00:04:34,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 644 transitions, 16095 flow, removed 20 selfloop flow, removed 13 redundant places. [2021-03-25 00:04:34,159 INFO L241 Difference]: Finished difference. Result has 418 places, 560 transitions, 13507 flow [2021-03-25 00:04:34,159 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=11403, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13507, PETRI_PLACES=418, PETRI_TRANSITIONS=560} [2021-03-25 00:04:34,159 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 370 predicate places. [2021-03-25 00:04:34,159 INFO L480 AbstractCegarLoop]: Abstraction has has 418 places, 560 transitions, 13507 flow [2021-03-25 00:04:34,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:34,159 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:34,159 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] [2021-03-25 00:04:34,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-25 00:04:34,160 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:34,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:34,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1696117464, now seen corresponding path program 53 times [2021-03-25 00:04:34,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:34,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838238736] [2021-03-25 00:04:34,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:34,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:34,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:34,187 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-03-25 00:04:34,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:34,190 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-03-25 00:04:34,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:34,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:34,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:34,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:34,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:34,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:34,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:34,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:34,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:34,230 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:04:34,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:34,240 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-03-25 00:04:34,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:34,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:34,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:34,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:34,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:34,267 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-03-25 00:04:34,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:34,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:34,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:34,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:34,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838238736] [2021-03-25 00:04:34,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:34,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:04:34,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149215942] [2021-03-25 00:04:34,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:04:34,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:34,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:04:34,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:04:34,269 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:34,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 560 transitions, 13507 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:34,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:34,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:34,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:35,937 INFO L129 PetriNetUnfolder]: 1210/5322 cut-off events. [2021-03-25 00:04:35,938 INFO L130 PetriNetUnfolder]: For 183680/184784 co-relation queries the response was YES. [2021-03-25 00:04:36,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47124 conditions, 5322 events. 1210/5322 cut-off events. For 183680/184784 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 59688 event pairs, 319 based on Foata normal form. 167/5386 useless extension candidates. Maximal degree in co-relation 46964. Up to 2385 conditions per place. [2021-03-25 00:04:36,026 INFO L132 encePairwiseOnDemand]: 50/63 looper letters, 421 selfloop transitions, 92 changer transitions 11/607 dead transitions. [2021-03-25 00:04:36,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 607 transitions, 15681 flow [2021-03-25 00:04:36,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 00:04:36,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 00:04:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 492 transitions. [2021-03-25 00:04:36,027 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2021-03-25 00:04:36,027 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 492 transitions. [2021-03-25 00:04:36,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 492 transitions. [2021-03-25 00:04:36,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:36,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 492 transitions. [2021-03-25 00:04:36,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 41.0) internal successors, (492), 12 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:36,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:36,028 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:36,028 INFO L185 Difference]: Start difference. First operand has 418 places, 560 transitions, 13507 flow. Second operand 12 states and 492 transitions. [2021-03-25 00:04:36,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 607 transitions, 15681 flow [2021-03-25 00:04:37,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 607 transitions, 15493 flow, removed 38 selfloop flow, removed 4 redundant places. [2021-03-25 00:04:37,289 INFO L241 Difference]: Finished difference. Result has 429 places, 563 transitions, 13705 flow [2021-03-25 00:04:37,290 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=13268, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13705, PETRI_PLACES=429, PETRI_TRANSITIONS=563} [2021-03-25 00:04:37,290 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 381 predicate places. [2021-03-25 00:04:37,290 INFO L480 AbstractCegarLoop]: Abstraction has has 429 places, 563 transitions, 13705 flow [2021-03-25 00:04:37,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:37,290 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:37,290 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] [2021-03-25 00:04:37,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-25 00:04:37,290 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:37,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:37,291 INFO L82 PathProgramCache]: Analyzing trace with hash 2039646924, now seen corresponding path program 54 times [2021-03-25 00:04:37,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:37,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165843348] [2021-03-25 00:04:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:37,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:37,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:37,323 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-25 00:04:37,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:37,326 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-25 00:04:37,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:37,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:37,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:37,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:37,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:37,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:37,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:37,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:37,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 00:04:37,366 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-03-25 00:04:37,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 00:04:37,386 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-03-25 00:04:37,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:37,403 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-03-25 00:04:37,404 INFO L147 QuantifierPusher]: treesize reduction 3, result has 86.4 percent of original size 19 [2021-03-25 00:04:37,423 INFO L142 QuantifierPusher]: treesize reduction 20, result has 48.7 percent of original size [2021-03-25 00:04:37,423 INFO L147 QuantifierPusher]: treesize reduction 5, result has 73.7 percent of original size 14 [2021-03-25 00:04:37,424 INFO L142 QuantifierPusher]: treesize reduction 13, result has 7.1 percent of original size [2021-03-25 00:04:37,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:37,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:37,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:37,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165843348] [2021-03-25 00:04:37,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:37,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:04:37,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385236285] [2021-03-25 00:04:37,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:04:37,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:37,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:04:37,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:04:37,427 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:37,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 563 transitions, 13705 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:37,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:37,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:37,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:39,193 INFO L129 PetriNetUnfolder]: 1196/5318 cut-off events. [2021-03-25 00:04:39,193 INFO L130 PetriNetUnfolder]: For 186378/187464 co-relation queries the response was YES. [2021-03-25 00:04:39,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47074 conditions, 5318 events. 1196/5318 cut-off events. For 186378/187464 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 59760 event pairs, 362 based on Foata normal form. 133/5348 useless extension candidates. Maximal degree in co-relation 46909. Up to 2693 conditions per place. [2021-03-25 00:04:39,267 INFO L132 encePairwiseOnDemand]: 52/63 looper letters, 413 selfloop transitions, 74 changer transitions 2/572 dead transitions. [2021-03-25 00:04:39,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 572 transitions, 14879 flow [2021-03-25 00:04:39,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:04:39,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:04:39,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 325 transitions. [2021-03-25 00:04:39,268 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6448412698412699 [2021-03-25 00:04:39,269 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 325 transitions. [2021-03-25 00:04:39,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 325 transitions. [2021-03-25 00:04:39,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:39,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 325 transitions. [2021-03-25 00:04:39,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.625) internal successors, (325), 8 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:39,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:39,269 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:39,270 INFO L185 Difference]: Start difference. First operand has 429 places, 563 transitions, 13705 flow. Second operand 8 states and 325 transitions. [2021-03-25 00:04:39,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 572 transitions, 14879 flow [2021-03-25 00:04:40,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 572 transitions, 14720 flow, removed 33 selfloop flow, removed 4 redundant places. [2021-03-25 00:04:40,293 INFO L241 Difference]: Finished difference. Result has 431 places, 563 transitions, 13728 flow [2021-03-25 00:04:40,294 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=13546, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13728, PETRI_PLACES=431, PETRI_TRANSITIONS=563} [2021-03-25 00:04:40,294 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 383 predicate places. [2021-03-25 00:04:40,294 INFO L480 AbstractCegarLoop]: Abstraction has has 431 places, 563 transitions, 13728 flow [2021-03-25 00:04:40,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:40,294 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:40,294 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] [2021-03-25 00:04:40,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-25 00:04:40,294 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:40,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:40,294 INFO L82 PathProgramCache]: Analyzing trace with hash 851889476, now seen corresponding path program 55 times [2021-03-25 00:04:40,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:40,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723377237] [2021-03-25 00:04:40,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:40,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:40,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:40,329 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-25 00:04:40,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:40,331 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-25 00:04:40,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:40,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:40,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:40,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:40,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:40,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:40,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 00:04:40,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:40,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 00:04:40,370 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-03-25 00:04:40,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 00:04:40,390 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-03-25 00:04:40,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:40,407 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-03-25 00:04:40,408 INFO L147 QuantifierPusher]: treesize reduction 3, result has 86.4 percent of original size 19 [2021-03-25 00:04:40,425 INFO L142 QuantifierPusher]: treesize reduction 20, result has 48.7 percent of original size [2021-03-25 00:04:40,426 INFO L147 QuantifierPusher]: treesize reduction 5, result has 73.7 percent of original size 14 [2021-03-25 00:04:40,427 INFO L142 QuantifierPusher]: treesize reduction 13, result has 7.1 percent of original size [2021-03-25 00:04:40,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:40,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:40,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:40,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:40,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723377237] [2021-03-25 00:04:40,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:40,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:04:40,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876626396] [2021-03-25 00:04:40,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:04:40,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:40,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:04:40,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:04:40,430 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:40,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 563 transitions, 13728 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:40,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:40,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:40,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:42,077 INFO L129 PetriNetUnfolder]: 1196/5311 cut-off events. [2021-03-25 00:04:42,077 INFO L130 PetriNetUnfolder]: For 187136/188232 co-relation queries the response was YES. [2021-03-25 00:04:42,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47060 conditions, 5311 events. 1196/5311 cut-off events. For 187136/188232 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 59748 event pairs, 355 based on Foata normal form. 124/5336 useless extension candidates. Maximal degree in co-relation 46895. Up to 2694 conditions per place. [2021-03-25 00:04:42,160 INFO L132 encePairwiseOnDemand]: 52/63 looper letters, 444 selfloop transitions, 46 changer transitions 2/575 dead transitions. [2021-03-25 00:04:42,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 575 transitions, 14962 flow [2021-03-25 00:04:42,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:04:42,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:04:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 364 transitions. [2021-03-25 00:04:42,162 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2021-03-25 00:04:42,162 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 364 transitions. [2021-03-25 00:04:42,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 364 transitions. [2021-03-25 00:04:42,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:42,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 364 transitions. [2021-03-25 00:04:42,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.44444444444444) internal successors, (364), 9 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:42,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:42,163 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:42,163 INFO L185 Difference]: Start difference. First operand has 431 places, 563 transitions, 13728 flow. Second operand 9 states and 364 transitions. [2021-03-25 00:04:42,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 575 transitions, 14962 flow [2021-03-25 00:04:43,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 575 transitions, 14845 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-03-25 00:04:43,286 INFO L241 Difference]: Finished difference. Result has 436 places, 563 transitions, 13727 flow [2021-03-25 00:04:43,286 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=13611, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13727, PETRI_PLACES=436, PETRI_TRANSITIONS=563} [2021-03-25 00:04:43,286 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 388 predicate places. [2021-03-25 00:04:43,286 INFO L480 AbstractCegarLoop]: Abstraction has has 436 places, 563 transitions, 13727 flow [2021-03-25 00:04:43,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:43,287 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:43,287 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] [2021-03-25 00:04:43,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-25 00:04:43,287 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:43,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:43,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1622097016, now seen corresponding path program 56 times [2021-03-25 00:04:43,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:43,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847249821] [2021-03-25 00:04:43,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:43,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:43,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:43,313 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-03-25 00:04:43,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:43,315 INFO L142 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-03-25 00:04:43,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:43,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:43,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:43,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:43,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:04:43,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:43,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:04:43,336 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-25 00:04:43,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:43,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:43,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:43,353 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-03-25 00:04:43,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:43,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:43,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:43,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847249821] [2021-03-25 00:04:43,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:43,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:04:43,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206601583] [2021-03-25 00:04:43,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:04:43,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:43,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:04:43,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:04:43,401 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:43,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 563 transitions, 13727 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:43,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:43,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:43,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:44,487 INFO L129 PetriNetUnfolder]: 719/3007 cut-off events. [2021-03-25 00:04:44,487 INFO L130 PetriNetUnfolder]: For 123607/124021 co-relation queries the response was YES. [2021-03-25 00:04:44,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28360 conditions, 3007 events. 719/3007 cut-off events. For 123607/124021 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 30515 event pairs, 243 based on Foata normal form. 285/3204 useless extension candidates. Maximal degree in co-relation 28193. Up to 515 conditions per place. [2021-03-25 00:04:44,542 INFO L132 encePairwiseOnDemand]: 47/63 looper letters, 153 selfloop transitions, 157 changer transitions 118/464 dead transitions. [2021-03-25 00:04:44,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 464 transitions, 12848 flow [2021-03-25 00:04:44,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 00:04:44,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 00:04:44,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 608 transitions. [2021-03-25 00:04:44,543 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6433862433862434 [2021-03-25 00:04:44,543 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 608 transitions. [2021-03-25 00:04:44,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 608 transitions. [2021-03-25 00:04:44,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:44,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 608 transitions. [2021-03-25 00:04:44,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 40.53333333333333) internal successors, (608), 15 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:44,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 63.0) internal successors, (1008), 16 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:44,548 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 63.0) internal successors, (1008), 16 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:44,548 INFO L185 Difference]: Start difference. First operand has 436 places, 563 transitions, 13727 flow. Second operand 15 states and 608 transitions. [2021-03-25 00:04:44,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 464 transitions, 12848 flow [2021-03-25 00:04:45,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 464 transitions, 11706 flow, removed 80 selfloop flow, removed 33 redundant places. [2021-03-25 00:04:45,264 INFO L241 Difference]: Finished difference. Result has 406 places, 326 transitions, 7845 flow [2021-03-25 00:04:45,264 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=9652, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7845, PETRI_PLACES=406, PETRI_TRANSITIONS=326} [2021-03-25 00:04:45,264 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 358 predicate places. [2021-03-25 00:04:45,264 INFO L480 AbstractCegarLoop]: Abstraction has has 406 places, 326 transitions, 7845 flow [2021-03-25 00:04:45,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:45,264 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:45,264 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] [2021-03-25 00:04:45,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-25 00:04:45,265 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:45,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:45,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1732949674, now seen corresponding path program 57 times [2021-03-25 00:04:45,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:45,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651608829] [2021-03-25 00:04:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:45,279 INFO L142 QuantifierPusher]: treesize reduction 24, result has 53.8 percent of original size [2021-03-25 00:04:45,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-25 00:04:45,294 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-03-25 00:04:45,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:45,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:45,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:45,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:45,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:45,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:45,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:45,307 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-03-25 00:04:45,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:45,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:45,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:04:45,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:45,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:45,327 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-03-25 00:04:45,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 00:04:45,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:45,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:45,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:45,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:45,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:45,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:45,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651608829] [2021-03-25 00:04:45,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:45,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 00:04:45,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845737888] [2021-03-25 00:04:45,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 00:04:45,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:45,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 00:04:45,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-03-25 00:04:45,366 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:45,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 326 transitions, 7845 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:45,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:45,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:45,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:46,166 INFO L129 PetriNetUnfolder]: 605/2444 cut-off events. [2021-03-25 00:04:46,166 INFO L130 PetriNetUnfolder]: For 86133/86547 co-relation queries the response was YES. [2021-03-25 00:04:46,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21309 conditions, 2444 events. 605/2444 cut-off events. For 86133/86547 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 23145 event pairs, 216 based on Foata normal form. 99/2468 useless extension candidates. Maximal degree in co-relation 21156. Up to 1062 conditions per place. [2021-03-25 00:04:46,202 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 315 selfloop transitions, 32 changer transitions 36/419 dead transitions. [2021-03-25 00:04:46,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 419 transitions, 10802 flow [2021-03-25 00:04:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 00:04:46,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 00:04:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 412 transitions. [2021-03-25 00:04:46,203 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.653968253968254 [2021-03-25 00:04:46,203 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 412 transitions. [2021-03-25 00:04:46,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 412 transitions. [2021-03-25 00:04:46,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:46,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 412 transitions. [2021-03-25 00:04:46,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 41.2) internal successors, (412), 10 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:46,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:46,204 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:46,204 INFO L185 Difference]: Start difference. First operand has 406 places, 326 transitions, 7845 flow. Second operand 10 states and 412 transitions. [2021-03-25 00:04:46,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 419 transitions, 10802 flow [2021-03-25 00:04:46,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 419 transitions, 9091 flow, removed 343 selfloop flow, removed 64 redundant places. [2021-03-25 00:04:46,578 INFO L241 Difference]: Finished difference. Result has 310 places, 336 transitions, 6876 flow [2021-03-25 00:04:46,578 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=6593, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6876, PETRI_PLACES=310, PETRI_TRANSITIONS=336} [2021-03-25 00:04:46,579 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 262 predicate places. [2021-03-25 00:04:46,579 INFO L480 AbstractCegarLoop]: Abstraction has has 310 places, 336 transitions, 6876 flow [2021-03-25 00:04:46,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:46,579 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:46,579 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] [2021-03-25 00:04:46,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-25 00:04:46,579 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:46,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:46,579 INFO L82 PathProgramCache]: Analyzing trace with hash -253232258, now seen corresponding path program 58 times [2021-03-25 00:04:46,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:46,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109807726] [2021-03-25 00:04:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:46,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:46,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:46,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:46,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:46,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:46,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:46,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:46,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:46,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:46,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:46,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:46,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:04:46,643 INFO L142 QuantifierPusher]: treesize reduction 14, result has 58.8 percent of original size [2021-03-25 00:04:46,644 INFO L147 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size 15 [2021-03-25 00:04:46,662 INFO L142 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size [2021-03-25 00:04:46,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:46,674 INFO L142 QuantifierPusher]: treesize reduction 18, result has 43.8 percent of original size [2021-03-25 00:04:46,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:04:46,686 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-25 00:04:46,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 00:04:46,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:46,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 00:04:46,713 INFO L142 QuantifierPusher]: treesize reduction 13, result has 55.2 percent of original size [2021-03-25 00:04:46,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:46,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:46,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:46,754 INFO L142 QuantifierPusher]: treesize reduction 10, result has 47.4 percent of original size [2021-03-25 00:04:46,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:46,772 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 00:04:46,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:46,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:46,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:46,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:46,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109807726] [2021-03-25 00:04:46,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:46,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-25 00:04:46,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641958997] [2021-03-25 00:04:46,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 00:04:46,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:46,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 00:04:46,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-03-25 00:04:46,774 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:46,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 336 transitions, 6876 flow. Second operand has 14 states, 14 states have (on average 35.357142857142854) internal successors, (495), 14 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:46,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:46,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:46,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:47,906 INFO L129 PetriNetUnfolder]: 700/2934 cut-off events. [2021-03-25 00:04:47,907 INFO L130 PetriNetUnfolder]: For 65088/65618 co-relation queries the response was YES. [2021-03-25 00:04:47,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20988 conditions, 2934 events. 700/2934 cut-off events. For 65088/65618 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 29328 event pairs, 249 based on Foata normal form. 183/3031 useless extension candidates. Maximal degree in co-relation 20874. Up to 1113 conditions per place. [2021-03-25 00:04:47,947 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 240 selfloop transitions, 108 changer transitions 45/429 dead transitions. [2021-03-25 00:04:47,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 429 transitions, 9690 flow [2021-03-25 00:04:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-25 00:04:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-25 00:04:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 555 transitions. [2021-03-25 00:04:47,948 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6292517006802721 [2021-03-25 00:04:47,948 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 555 transitions. [2021-03-25 00:04:47,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 555 transitions. [2021-03-25 00:04:47,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:47,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 555 transitions. [2021-03-25 00:04:47,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 39.642857142857146) internal successors, (555), 14 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:47,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:47,950 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:47,950 INFO L185 Difference]: Start difference. First operand has 310 places, 336 transitions, 6876 flow. Second operand 14 states and 555 transitions. [2021-03-25 00:04:47,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 429 transitions, 9690 flow [2021-03-25 00:04:48,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 429 transitions, 9462 flow, removed 64 selfloop flow, removed 8 redundant places. [2021-03-25 00:04:48,268 INFO L241 Difference]: Finished difference. Result has 323 places, 359 transitions, 7693 flow [2021-03-25 00:04:48,269 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=6706, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7693, PETRI_PLACES=323, PETRI_TRANSITIONS=359} [2021-03-25 00:04:48,269 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 275 predicate places. [2021-03-25 00:04:48,269 INFO L480 AbstractCegarLoop]: Abstraction has has 323 places, 359 transitions, 7693 flow [2021-03-25 00:04:48,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 35.357142857142854) internal successors, (495), 14 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:48,269 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:48,269 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] [2021-03-25 00:04:48,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-25 00:04:48,269 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:48,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:48,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1301273000, now seen corresponding path program 59 times [2021-03-25 00:04:48,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:48,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797168080] [2021-03-25 00:04:48,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:48,297 INFO L142 QuantifierPusher]: treesize reduction 25, result has 47.9 percent of original size [2021-03-25 00:04:48,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 00:04:48,311 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-03-25 00:04:48,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:48,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:48,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:48,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:48,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:48,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:48,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:48,324 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-03-25 00:04:48,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:48,332 INFO L142 QuantifierPusher]: treesize reduction 18, result has 43.8 percent of original size [2021-03-25 00:04:48,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:04:48,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:48,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:48,358 INFO L142 QuantifierPusher]: treesize reduction 11, result has 42.1 percent of original size [2021-03-25 00:04:48,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 00:04:48,367 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-25 00:04:48,368 INFO L147 QuantifierPusher]: treesize reduction 4, result has 66.7 percent of original size 8 [2021-03-25 00:04:48,382 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-25 00:04:48,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:48,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:48,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:48,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797168080] [2021-03-25 00:04:48,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:48,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 00:04:48,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033434210] [2021-03-25 00:04:48,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 00:04:48,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:48,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 00:04:48,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-03-25 00:04:48,394 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:48,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 359 transitions, 7693 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:48,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:48,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:48,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:49,074 INFO L129 PetriNetUnfolder]: 636/2698 cut-off events. [2021-03-25 00:04:49,074 INFO L130 PetriNetUnfolder]: For 62241/62719 co-relation queries the response was YES. [2021-03-25 00:04:49,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19581 conditions, 2698 events. 636/2698 cut-off events. For 62241/62719 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 26626 event pairs, 270 based on Foata normal form. 127/2741 useless extension candidates. Maximal degree in co-relation 19462. Up to 1314 conditions per place. [2021-03-25 00:04:49,106 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 293 selfloop transitions, 18 changer transitions 45/392 dead transitions. [2021-03-25 00:04:49,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 392 transitions, 9121 flow [2021-03-25 00:04:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 00:04:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 00:04:49,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 435 transitions. [2021-03-25 00:04:49,108 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6277056277056277 [2021-03-25 00:04:49,108 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 435 transitions. [2021-03-25 00:04:49,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 435 transitions. [2021-03-25 00:04:49,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:49,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 435 transitions. [2021-03-25 00:04:49,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 39.54545454545455) internal successors, (435), 11 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:49,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:49,109 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:49,109 INFO L185 Difference]: Start difference. First operand has 323 places, 359 transitions, 7693 flow. Second operand 11 states and 435 transitions. [2021-03-25 00:04:49,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 392 transitions, 9121 flow [2021-03-25 00:04:49,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 392 transitions, 8876 flow, removed 62 selfloop flow, removed 6 redundant places. [2021-03-25 00:04:49,404 INFO L241 Difference]: Finished difference. Result has 331 places, 334 transitions, 6842 flow [2021-03-25 00:04:49,404 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=7355, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6842, PETRI_PLACES=331, PETRI_TRANSITIONS=334} [2021-03-25 00:04:49,404 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 283 predicate places. [2021-03-25 00:04:49,404 INFO L480 AbstractCegarLoop]: Abstraction has has 331 places, 334 transitions, 6842 flow [2021-03-25 00:04:49,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:49,404 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:49,404 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] [2021-03-25 00:04:49,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-25 00:04:49,404 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:49,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:49,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1457763766, now seen corresponding path program 60 times [2021-03-25 00:04:49,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:49,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323815854] [2021-03-25 00:04:49,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:49,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:49,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:49,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:49,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:49,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:49,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:49,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:49,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:49,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:49,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:04:49,444 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-03-25 00:04:49,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:49,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:49,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:49,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:49,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:04:49,470 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-03-25 00:04:49,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:49,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:49,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:49,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:49,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:49,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:49,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:49,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323815854] [2021-03-25 00:04:49,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:49,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 00:04:49,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595215051] [2021-03-25 00:04:49,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 00:04:49,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:49,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 00:04:49,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-03-25 00:04:49,498 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:49,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 334 transitions, 6842 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:49,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:49,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:49,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:50,033 INFO L129 PetriNetUnfolder]: 552/2259 cut-off events. [2021-03-25 00:04:50,033 INFO L130 PetriNetUnfolder]: For 53088/53577 co-relation queries the response was YES. [2021-03-25 00:04:50,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16517 conditions, 2259 events. 552/2259 cut-off events. For 53088/53577 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 21134 event pairs, 216 based on Foata normal form. 138/2325 useless extension candidates. Maximal degree in co-relation 16395. Up to 1042 conditions per place. [2021-03-25 00:04:50,059 INFO L132 encePairwiseOnDemand]: 52/63 looper letters, 196 selfloop transitions, 67 changer transitions 40/339 dead transitions. [2021-03-25 00:04:50,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 339 transitions, 7529 flow [2021-03-25 00:04:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 00:04:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 00:04:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 398 transitions. [2021-03-25 00:04:50,060 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6317460317460317 [2021-03-25 00:04:50,060 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 398 transitions. [2021-03-25 00:04:50,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 398 transitions. [2021-03-25 00:04:50,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:50,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 398 transitions. [2021-03-25 00:04:50,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 39.8) internal successors, (398), 10 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:50,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:50,062 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:50,062 INFO L185 Difference]: Start difference. First operand has 331 places, 334 transitions, 6842 flow. Second operand 10 states and 398 transitions. [2021-03-25 00:04:50,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 339 transitions, 7529 flow [2021-03-25 00:04:50,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 339 transitions, 7377 flow, removed 55 selfloop flow, removed 9 redundant places. [2021-03-25 00:04:50,294 INFO L241 Difference]: Finished difference. Result has 329 places, 294 transitions, 5954 flow [2021-03-25 00:04:50,294 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=6491, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5954, PETRI_PLACES=329, PETRI_TRANSITIONS=294} [2021-03-25 00:04:50,294 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 281 predicate places. [2021-03-25 00:04:50,294 INFO L480 AbstractCegarLoop]: Abstraction has has 329 places, 294 transitions, 5954 flow [2021-03-25 00:04:50,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:50,294 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:50,295 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] [2021-03-25 00:04:50,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-25 00:04:50,295 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:50,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:50,295 INFO L82 PathProgramCache]: Analyzing trace with hash 981539030, now seen corresponding path program 61 times [2021-03-25 00:04:50,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:50,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265586168] [2021-03-25 00:04:50,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:50,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:50,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:50,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:50,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:50,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:50,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:50,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:50,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:50,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:50,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:50,333 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-03-25 00:04:50,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:50,344 INFO L142 QuantifierPusher]: treesize reduction 21, result has 40.0 percent of original size [2021-03-25 00:04:50,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:04:50,372 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.8 percent of original size [2021-03-25 00:04:50,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 00:04:50,377 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:04:50,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:50,385 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:04:50,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:50,393 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 00:04:50,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:50,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:50,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:50,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265586168] [2021-03-25 00:04:50,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:50,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:04:50,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725207734] [2021-03-25 00:04:50,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:04:50,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:50,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:04:50,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:04:50,404 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:50,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 294 transitions, 5954 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:50,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:50,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:50,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:50,829 INFO L129 PetriNetUnfolder]: 409/1799 cut-off events. [2021-03-25 00:04:50,829 INFO L130 PetriNetUnfolder]: For 43973/44407 co-relation queries the response was YES. [2021-03-25 00:04:50,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13413 conditions, 1799 events. 409/1799 cut-off events. For 43973/44407 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16522 event pairs, 123 based on Foata normal form. 142/1895 useless extension candidates. Maximal degree in co-relation 13291. Up to 631 conditions per place. [2021-03-25 00:04:50,851 INFO L132 encePairwiseOnDemand]: 52/63 looper letters, 153 selfloop transitions, 43 changer transitions 69/301 dead transitions. [2021-03-25 00:04:50,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 301 transitions, 6680 flow [2021-03-25 00:04:50,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:04:50,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:04:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 366 transitions. [2021-03-25 00:04:50,852 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6455026455026455 [2021-03-25 00:04:50,852 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 366 transitions. [2021-03-25 00:04:50,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 366 transitions. [2021-03-25 00:04:50,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:50,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 366 transitions. [2021-03-25 00:04:50,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.666666666666664) internal successors, (366), 9 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:50,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:50,853 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:50,853 INFO L185 Difference]: Start difference. First operand has 329 places, 294 transitions, 5954 flow. Second operand 9 states and 366 transitions. [2021-03-25 00:04:50,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 301 transitions, 6680 flow [2021-03-25 00:04:51,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 301 transitions, 6306 flow, removed 35 selfloop flow, removed 24 redundant places. [2021-03-25 00:04:51,038 INFO L241 Difference]: Finished difference. Result has 302 places, 223 transitions, 4035 flow [2021-03-25 00:04:51,039 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=5344, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4035, PETRI_PLACES=302, PETRI_TRANSITIONS=223} [2021-03-25 00:04:51,039 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 254 predicate places. [2021-03-25 00:04:51,039 INFO L480 AbstractCegarLoop]: Abstraction has has 302 places, 223 transitions, 4035 flow [2021-03-25 00:04:51,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:51,039 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:51,039 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] [2021-03-25 00:04:51,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-25 00:04:51,039 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:51,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:51,039 INFO L82 PathProgramCache]: Analyzing trace with hash 531960686, now seen corresponding path program 62 times [2021-03-25 00:04:51,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:51,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062606052] [2021-03-25 00:04:51,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:51,057 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.0 percent of original size [2021-03-25 00:04:51,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-25 00:04:51,081 INFO L142 QuantifierPusher]: treesize reduction 3, result has 84.2 percent of original size [2021-03-25 00:04:51,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:51,084 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-03-25 00:04:51,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:51,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:51,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 00:04:51,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:51,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 00:04:51,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:51,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 00:04:51,111 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-03-25 00:04:51,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 00:04:51,116 INFO L142 QuantifierPusher]: treesize reduction 1, result has 94.7 percent of original size [2021-03-25 00:04:51,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 00:04:51,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:51,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:51,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:51,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:51,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:51,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:51,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:51,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:51,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:51,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:51,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062606052] [2021-03-25 00:04:51,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:51,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:04:51,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726035009] [2021-03-25 00:04:51,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:04:51,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:51,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:04:51,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:04:51,151 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:51,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 223 transitions, 4035 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:51,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:51,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:51,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:51,438 INFO L129 PetriNetUnfolder]: 305/1241 cut-off events. [2021-03-25 00:04:51,439 INFO L130 PetriNetUnfolder]: For 26690/27105 co-relation queries the response was YES. [2021-03-25 00:04:51,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8933 conditions, 1241 events. 305/1241 cut-off events. For 26690/27105 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9977 event pairs, 94 based on Foata normal form. 76/1287 useless extension candidates. Maximal degree in co-relation 8825. Up to 681 conditions per place. [2021-03-25 00:04:51,453 INFO L132 encePairwiseOnDemand]: 54/63 looper letters, 166 selfloop transitions, 16 changer transitions 10/228 dead transitions. [2021-03-25 00:04:51,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 228 transitions, 4499 flow [2021-03-25 00:04:51,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:04:51,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:04:51,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 309 transitions. [2021-03-25 00:04:51,454 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6130952380952381 [2021-03-25 00:04:51,454 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 309 transitions. [2021-03-25 00:04:51,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 309 transitions. [2021-03-25 00:04:51,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:51,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 309 transitions. [2021-03-25 00:04:51,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 38.625) internal successors, (309), 8 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:51,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:51,455 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:51,455 INFO L185 Difference]: Start difference. First operand has 302 places, 223 transitions, 4035 flow. Second operand 8 states and 309 transitions. [2021-03-25 00:04:51,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 228 transitions, 4499 flow [2021-03-25 00:04:51,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 228 transitions, 4081 flow, removed 62 selfloop flow, removed 27 redundant places. [2021-03-25 00:04:51,535 INFO L241 Difference]: Finished difference. Result has 275 places, 217 transitions, 3557 flow [2021-03-25 00:04:51,536 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3625, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3557, PETRI_PLACES=275, PETRI_TRANSITIONS=217} [2021-03-25 00:04:51,536 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 227 predicate places. [2021-03-25 00:04:51,536 INFO L480 AbstractCegarLoop]: Abstraction has has 275 places, 217 transitions, 3557 flow [2021-03-25 00:04:51,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:51,536 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:51,536 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] [2021-03-25 00:04:51,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-25 00:04:51,536 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:51,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:51,536 INFO L82 PathProgramCache]: Analyzing trace with hash 623963710, now seen corresponding path program 63 times [2021-03-25 00:04:51,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:51,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485041477] [2021-03-25 00:04:51,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:51,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:51,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:51,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:51,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:51,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:51,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:51,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:51,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:51,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:51,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:51,599 INFO L142 QuantifierPusher]: treesize reduction 16, result has 46.7 percent of original size [2021-03-25 00:04:51,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:04:51,611 INFO L142 QuantifierPusher]: treesize reduction 11, result has 60.7 percent of original size [2021-03-25 00:04:51,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:51,631 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 00:04:51,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 00:04:51,642 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 00:04:51,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 00:04:51,653 INFO L142 QuantifierPusher]: treesize reduction 21, result has 44.7 percent of original size [2021-03-25 00:04:51,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:51,668 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-03-25 00:04:51,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:51,684 INFO L142 QuantifierPusher]: treesize reduction 14, result has 33.3 percent of original size [2021-03-25 00:04:51,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:51,696 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 00:04:51,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:51,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:51,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:51,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:51,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485041477] [2021-03-25 00:04:51,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:51,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-25 00:04:51,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947818619] [2021-03-25 00:04:51,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 00:04:51,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:51,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 00:04:51,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-03-25 00:04:51,699 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:51,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 217 transitions, 3557 flow. Second operand has 14 states, 14 states have (on average 35.357142857142854) internal successors, (495), 14 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:51,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:51,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:51,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:52,738 INFO L129 PetriNetUnfolder]: 345/1397 cut-off events. [2021-03-25 00:04:52,738 INFO L130 PetriNetUnfolder]: For 23100/23415 co-relation queries the response was YES. [2021-03-25 00:04:52,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9295 conditions, 1397 events. 345/1397 cut-off events. For 23100/23415 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11744 event pairs, 49 based on Foata normal form. 256/1622 useless extension candidates. Maximal degree in co-relation 9195. Up to 155 conditions per place. [2021-03-25 00:04:52,752 INFO L132 encePairwiseOnDemand]: 47/63 looper letters, 63 selfloop transitions, 177 changer transitions 26/302 dead transitions. [2021-03-25 00:04:52,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 302 transitions, 5696 flow [2021-03-25 00:04:52,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-25 00:04:52,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-03-25 00:04:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1363 transitions. [2021-03-25 00:04:52,753 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6009700176366843 [2021-03-25 00:04:52,753 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1363 transitions. [2021-03-25 00:04:52,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1363 transitions. [2021-03-25 00:04:52,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:52,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1363 transitions. [2021-03-25 00:04:52,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 37.861111111111114) internal successors, (1363), 36 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:52,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 63.0) internal successors, (2331), 37 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:52,757 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 63.0) internal successors, (2331), 37 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:52,757 INFO L185 Difference]: Start difference. First operand has 275 places, 217 transitions, 3557 flow. Second operand 36 states and 1363 transitions. [2021-03-25 00:04:52,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 302 transitions, 5696 flow [2021-03-25 00:04:52,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 302 transitions, 5377 flow, removed 16 selfloop flow, removed 16 redundant places. [2021-03-25 00:04:52,839 INFO L241 Difference]: Finished difference. Result has 301 places, 250 transitions, 4461 flow [2021-03-25 00:04:52,839 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3320, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4461, PETRI_PLACES=301, PETRI_TRANSITIONS=250} [2021-03-25 00:04:52,839 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 253 predicate places. [2021-03-25 00:04:52,839 INFO L480 AbstractCegarLoop]: Abstraction has has 301 places, 250 transitions, 4461 flow [2021-03-25 00:04:52,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 35.357142857142854) internal successors, (495), 14 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:52,839 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:52,839 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] [2021-03-25 00:04:52,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-25 00:04:52,839 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:52,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:52,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1025877616, now seen corresponding path program 64 times [2021-03-25 00:04:52,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:52,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089899153] [2021-03-25 00:04:52,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:52,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:52,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:52,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:52,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:52,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:52,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:52,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:52,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:52,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:52,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:04:52,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:52,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:04:52,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:52,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:52,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:52,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:52,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:52,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:52,906 INFO L142 QuantifierPusher]: treesize reduction 8, result has 52.9 percent of original size [2021-03-25 00:04:52,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:52,914 INFO L142 QuantifierPusher]: treesize reduction 8, result has 52.9 percent of original size [2021-03-25 00:04:52,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:52,922 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-03-25 00:04:52,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:52,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:52,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:52,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:52,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089899153] [2021-03-25 00:04:52,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:52,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:04:52,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801222847] [2021-03-25 00:04:52,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:04:52,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:52,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:04:52,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:04:52,924 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:52,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 250 transitions, 4461 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:52,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:52,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:52,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:53,265 INFO L129 PetriNetUnfolder]: 337/1366 cut-off events. [2021-03-25 00:04:53,265 INFO L130 PetriNetUnfolder]: For 25149/25505 co-relation queries the response was YES. [2021-03-25 00:04:53,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9629 conditions, 1366 events. 337/1366 cut-off events. For 25149/25505 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11433 event pairs, 93 based on Foata normal form. 69/1401 useless extension candidates. Maximal degree in co-relation 9523. Up to 718 conditions per place. [2021-03-25 00:04:53,286 INFO L132 encePairwiseOnDemand]: 54/63 looper letters, 175 selfloop transitions, 43 changer transitions 5/259 dead transitions. [2021-03-25 00:04:53,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 259 transitions, 5047 flow [2021-03-25 00:04:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:04:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:04:53,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 315 transitions. [2021-03-25 00:04:53,287 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.625 [2021-03-25 00:04:53,287 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 315 transitions. [2021-03-25 00:04:53,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 315 transitions. [2021-03-25 00:04:53,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:53,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 315 transitions. [2021-03-25 00:04:53,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 39.375) internal successors, (315), 8 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:53,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:53,289 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:53,289 INFO L185 Difference]: Start difference. First operand has 301 places, 250 transitions, 4461 flow. Second operand 8 states and 315 transitions. [2021-03-25 00:04:53,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 259 transitions, 5047 flow [2021-03-25 00:04:53,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 259 transitions, 4402 flow, removed 122 selfloop flow, removed 24 redundant places. [2021-03-25 00:04:53,412 INFO L241 Difference]: Finished difference. Result has 280 places, 249 transitions, 3898 flow [2021-03-25 00:04:53,412 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3898, PETRI_PLACES=280, PETRI_TRANSITIONS=249} [2021-03-25 00:04:53,412 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 232 predicate places. [2021-03-25 00:04:53,412 INFO L480 AbstractCegarLoop]: Abstraction has has 280 places, 249 transitions, 3898 flow [2021-03-25 00:04:53,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:53,412 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:53,413 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:04:53,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-25 00:04:53,413 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:53,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:53,413 INFO L82 PathProgramCache]: Analyzing trace with hash -6962302, now seen corresponding path program 65 times [2021-03-25 00:04:53,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:53,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963921271] [2021-03-25 00:04:53,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:53,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:53,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:53,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:53,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:53,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:53,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:53,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:53,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 00:04:53,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:53,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:53,468 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 00:04:53,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:53,479 INFO L142 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size [2021-03-25 00:04:53,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:53,485 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-03-25 00:04:53,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:53,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:53,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:53,503 INFO L142 QuantifierPusher]: treesize reduction 17, result has 46.9 percent of original size [2021-03-25 00:04:53,503 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-03-25 00:04:53,508 INFO L142 QuantifierPusher]: treesize reduction 5, result has 73.7 percent of original size [2021-03-25 00:04:53,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:04:53,517 INFO L142 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-03-25 00:04:53,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:53,527 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-03-25 00:04:53,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:53,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:53,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:53,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963921271] [2021-03-25 00:04:53,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:53,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:04:53,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807848674] [2021-03-25 00:04:53,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:04:53,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:53,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:04:53,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:04:53,529 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:53,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 249 transitions, 3898 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:53,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:53,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:53,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:53,821 INFO L129 PetriNetUnfolder]: 321/1330 cut-off events. [2021-03-25 00:04:53,821 INFO L130 PetriNetUnfolder]: For 19393/19745 co-relation queries the response was YES. [2021-03-25 00:04:53,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8568 conditions, 1330 events. 321/1330 cut-off events. For 19393/19745 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 11089 event pairs, 86 based on Foata normal form. 76/1373 useless extension candidates. Maximal degree in co-relation 8470. Up to 679 conditions per place. [2021-03-25 00:04:53,834 INFO L132 encePairwiseOnDemand]: 53/63 looper letters, 168 selfloop transitions, 37 changer transitions 18/259 dead transitions. [2021-03-25 00:04:53,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 259 transitions, 4479 flow [2021-03-25 00:04:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:04:53,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:04:53,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 357 transitions. [2021-03-25 00:04:53,835 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2021-03-25 00:04:53,835 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 357 transitions. [2021-03-25 00:04:53,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 357 transitions. [2021-03-25 00:04:53,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:53,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 357 transitions. [2021-03-25 00:04:53,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 39.666666666666664) internal successors, (357), 9 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:53,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:53,836 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:53,836 INFO L185 Difference]: Start difference. First operand has 280 places, 249 transitions, 3898 flow. Second operand 9 states and 357 transitions. [2021-03-25 00:04:53,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 259 transitions, 4479 flow [2021-03-25 00:04:53,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 259 transitions, 4243 flow, removed 29 selfloop flow, removed 10 redundant places. [2021-03-25 00:04:53,920 INFO L241 Difference]: Finished difference. Result has 279 places, 235 transitions, 3520 flow [2021-03-25 00:04:53,920 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3642, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3520, PETRI_PLACES=279, PETRI_TRANSITIONS=235} [2021-03-25 00:04:53,920 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 231 predicate places. [2021-03-25 00:04:53,920 INFO L480 AbstractCegarLoop]: Abstraction has has 279 places, 235 transitions, 3520 flow [2021-03-25 00:04:53,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:53,920 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:53,920 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] [2021-03-25 00:04:53,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-25 00:04:53,921 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:53,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:53,921 INFO L82 PathProgramCache]: Analyzing trace with hash 881651090, now seen corresponding path program 66 times [2021-03-25 00:04:53,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:53,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045812033] [2021-03-25 00:04:53,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:53,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:53,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:53,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:53,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:53,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:53,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:53,951 INFO L142 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size [2021-03-25 00:04:53,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 00:04:53,967 INFO L142 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-03-25 00:04:53,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 00:04:53,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:53,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:04:53,990 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-03-25 00:04:53,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:53,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:53,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:54,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:54,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:54,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:54,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:54,027 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-25 00:04:54,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 00:04:54,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:54,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:54,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045812033] [2021-03-25 00:04:54,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:54,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 00:04:54,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342216120] [2021-03-25 00:04:54,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 00:04:54,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:54,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 00:04:54,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-03-25 00:04:54,039 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:54,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 235 transitions, 3520 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:54,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:54,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:54,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:54,330 INFO L129 PetriNetUnfolder]: 304/1285 cut-off events. [2021-03-25 00:04:54,330 INFO L130 PetriNetUnfolder]: For 16389/16729 co-relation queries the response was YES. [2021-03-25 00:04:54,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8039 conditions, 1285 events. 304/1285 cut-off events. For 16389/16729 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10733 event pairs, 91 based on Foata normal form. 70/1323 useless extension candidates. Maximal degree in co-relation 7944. Up to 654 conditions per place. [2021-03-25 00:04:54,341 INFO L132 encePairwiseOnDemand]: 53/63 looper letters, 155 selfloop transitions, 34 changer transitions 18/243 dead transitions. [2021-03-25 00:04:54,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 243 transitions, 4113 flow [2021-03-25 00:04:54,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 00:04:54,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 00:04:54,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 387 transitions. [2021-03-25 00:04:54,342 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2021-03-25 00:04:54,342 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 387 transitions. [2021-03-25 00:04:54,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 387 transitions. [2021-03-25 00:04:54,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:54,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 387 transitions. [2021-03-25 00:04:54,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 38.7) internal successors, (387), 10 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:54,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:54,343 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:54,343 INFO L185 Difference]: Start difference. First operand has 279 places, 235 transitions, 3520 flow. Second operand 10 states and 387 transitions. [2021-03-25 00:04:54,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 243 transitions, 4113 flow [2021-03-25 00:04:54,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 243 transitions, 3945 flow, removed 13 selfloop flow, removed 19 redundant places. [2021-03-25 00:04:54,414 INFO L241 Difference]: Finished difference. Result has 272 places, 223 transitions, 3206 flow [2021-03-25 00:04:54,414 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3332, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3206, PETRI_PLACES=272, PETRI_TRANSITIONS=223} [2021-03-25 00:04:54,414 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 224 predicate places. [2021-03-25 00:04:54,414 INFO L480 AbstractCegarLoop]: Abstraction has has 272 places, 223 transitions, 3206 flow [2021-03-25 00:04:54,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:54,414 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:54,415 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] [2021-03-25 00:04:54,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-25 00:04:54,415 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:54,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:54,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1788143570, now seen corresponding path program 67 times [2021-03-25 00:04:54,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:54,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906252728] [2021-03-25 00:04:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:54,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:54,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:54,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:54,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:54,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:54,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:54,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:54,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:54,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:54,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:54,456 INFO L142 QuantifierPusher]: treesize reduction 25, result has 21.9 percent of original size [2021-03-25 00:04:54,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:54,462 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:04:54,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:54,470 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 00:04:54,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:54,477 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 00:04:54,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:54,486 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 00:04:54,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:54,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:54,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:54,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:54,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906252728] [2021-03-25 00:04:54,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:54,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:04:54,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894259756] [2021-03-25 00:04:54,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:04:54,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:54,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:04:54,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:04:54,498 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:54,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 223 transitions, 3206 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:54,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:54,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:54,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:54,861 INFO L129 PetriNetUnfolder]: 147/849 cut-off events. [2021-03-25 00:04:54,861 INFO L130 PetriNetUnfolder]: For 11501/11631 co-relation queries the response was YES. [2021-03-25 00:04:54,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5271 conditions, 849 events. 147/849 cut-off events. For 11501/11631 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6607 event pairs, 53 based on Foata normal form. 79/914 useless extension candidates. Maximal degree in co-relation 5180. Up to 193 conditions per place. [2021-03-25 00:04:54,868 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 64 selfloop transitions, 42 changer transitions 83/219 dead transitions. [2021-03-25 00:04:54,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 219 transitions, 3651 flow [2021-03-25 00:04:54,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-25 00:04:54,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-25 00:04:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 619 transitions. [2021-03-25 00:04:54,872 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6140873015873016 [2021-03-25 00:04:54,872 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 619 transitions. [2021-03-25 00:04:54,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 619 transitions. [2021-03-25 00:04:54,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:54,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 619 transitions. [2021-03-25 00:04:54,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 38.6875) internal successors, (619), 16 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:54,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 63.0) internal successors, (1071), 17 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:54,874 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 63.0) internal successors, (1071), 17 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:54,874 INFO L185 Difference]: Start difference. First operand has 272 places, 223 transitions, 3206 flow. Second operand 16 states and 619 transitions. [2021-03-25 00:04:54,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 219 transitions, 3651 flow [2021-03-25 00:04:54,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 219 transitions, 3418 flow, removed 12 selfloop flow, removed 25 redundant places. [2021-03-25 00:04:54,931 INFO L241 Difference]: Finished difference. Result has 261 places, 134 transitions, 1803 flow [2021-03-25 00:04:54,931 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=2502, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1803, PETRI_PLACES=261, PETRI_TRANSITIONS=134} [2021-03-25 00:04:54,931 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 213 predicate places. [2021-03-25 00:04:54,931 INFO L480 AbstractCegarLoop]: Abstraction has has 261 places, 134 transitions, 1803 flow [2021-03-25 00:04:54,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:54,931 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:54,932 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] [2021-03-25 00:04:54,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-25 00:04:54,932 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:54,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:54,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1820153058, now seen corresponding path program 68 times [2021-03-25 00:04:54,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:54,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905029960] [2021-03-25 00:04:54,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:54,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:54,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:54,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:54,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:04:54,952 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-03-25 00:04:54,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:04:54,953 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-03-25 00:04:54,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:04:54,961 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:04:54,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:54,971 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-03-25 00:04:54,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:54,981 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-03-25 00:04:54,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:54,991 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-25 00:04:54,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:55,003 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 00:04:55,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:55,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:55,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:55,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905029960] [2021-03-25 00:04:55,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:55,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:04:55,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257672902] [2021-03-25 00:04:55,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:04:55,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:55,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:04:55,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:04:55,005 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:55,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 134 transitions, 1803 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:55,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:55,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:55,197 INFO L129 PetriNetUnfolder]: 96/573 cut-off events. [2021-03-25 00:04:55,197 INFO L130 PetriNetUnfolder]: For 6727/6819 co-relation queries the response was YES. [2021-03-25 00:04:55,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3337 conditions, 573 events. 96/573 cut-off events. For 6727/6819 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3877 event pairs, 28 based on Foata normal form. 27/591 useless extension candidates. Maximal degree in co-relation 3250. Up to 127 conditions per place. [2021-03-25 00:04:55,203 INFO L132 encePairwiseOnDemand]: 53/63 looper letters, 62 selfloop transitions, 44 changer transitions 17/153 dead transitions. [2021-03-25 00:04:55,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 153 transitions, 2349 flow [2021-03-25 00:04:55,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 00:04:55,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 00:04:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 387 transitions. [2021-03-25 00:04:55,204 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2021-03-25 00:04:55,204 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 387 transitions. [2021-03-25 00:04:55,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 387 transitions. [2021-03-25 00:04:55,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:55,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 387 transitions. [2021-03-25 00:04:55,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 38.7) internal successors, (387), 10 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,205 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,205 INFO L185 Difference]: Start difference. First operand has 261 places, 134 transitions, 1803 flow. Second operand 10 states and 387 transitions. [2021-03-25 00:04:55,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 153 transitions, 2349 flow [2021-03-25 00:04:55,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 153 transitions, 1924 flow, removed 87 selfloop flow, removed 55 redundant places. [2021-03-25 00:04:55,234 INFO L241 Difference]: Finished difference. Result has 202 places, 128 transitions, 1417 flow [2021-03-25 00:04:55,234 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1417, PETRI_PLACES=202, PETRI_TRANSITIONS=128} [2021-03-25 00:04:55,234 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 154 predicate places. [2021-03-25 00:04:55,234 INFO L480 AbstractCegarLoop]: Abstraction has has 202 places, 128 transitions, 1417 flow [2021-03-25 00:04:55,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,234 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:55,235 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] [2021-03-25 00:04:55,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-25 00:04:55,235 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:55,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:55,235 INFO L82 PathProgramCache]: Analyzing trace with hash 771265960, now seen corresponding path program 69 times [2021-03-25 00:04:55,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:55,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196096430] [2021-03-25 00:04:55,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:55,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:55,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:04:55,260 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-03-25 00:04:55,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:04:55,260 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:04:55,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:55,266 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:04:55,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:55,274 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-03-25 00:04:55,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:55,283 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-03-25 00:04:55,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:55,294 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-25 00:04:55,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:55,303 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 00:04:55,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:55,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:55,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196096430] [2021-03-25 00:04:55,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:55,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:04:55,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931383870] [2021-03-25 00:04:55,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:04:55,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:55,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:04:55,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:04:55,305 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:55,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 128 transitions, 1417 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:55,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:55,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:55,446 INFO L129 PetriNetUnfolder]: 83/520 cut-off events. [2021-03-25 00:04:55,446 INFO L130 PetriNetUnfolder]: For 3810/3889 co-relation queries the response was YES. [2021-03-25 00:04:55,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2540 conditions, 520 events. 83/520 cut-off events. For 3810/3889 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3454 event pairs, 16 based on Foata normal form. 24/537 useless extension candidates. Maximal degree in co-relation 2476. Up to 68 conditions per place. [2021-03-25 00:04:55,450 INFO L132 encePairwiseOnDemand]: 52/63 looper letters, 48 selfloop transitions, 50 changer transitions 15/143 dead transitions. [2021-03-25 00:04:55,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 143 transitions, 1810 flow [2021-03-25 00:04:55,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 00:04:55,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 00:04:55,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 459 transitions. [2021-03-25 00:04:55,451 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2021-03-25 00:04:55,451 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 459 transitions. [2021-03-25 00:04:55,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 459 transitions. [2021-03-25 00:04:55,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:55,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 459 transitions. [2021-03-25 00:04:55,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 38.25) internal successors, (459), 12 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,452 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,452 INFO L185 Difference]: Start difference. First operand has 202 places, 128 transitions, 1417 flow. Second operand 12 states and 459 transitions. [2021-03-25 00:04:55,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 143 transitions, 1810 flow [2021-03-25 00:04:55,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 143 transitions, 1701 flow, removed 12 selfloop flow, removed 11 redundant places. [2021-03-25 00:04:55,467 INFO L241 Difference]: Finished difference. Result has 199 places, 121 transitions, 1319 flow [2021-03-25 00:04:55,467 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1319, PETRI_PLACES=199, PETRI_TRANSITIONS=121} [2021-03-25 00:04:55,467 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 151 predicate places. [2021-03-25 00:04:55,467 INFO L480 AbstractCegarLoop]: Abstraction has has 199 places, 121 transitions, 1319 flow [2021-03-25 00:04:55,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,467 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:55,467 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] [2021-03-25 00:04:55,467 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-25 00:04:55,467 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:55,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:55,468 INFO L82 PathProgramCache]: Analyzing trace with hash -320450046, now seen corresponding path program 70 times [2021-03-25 00:04:55,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:55,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706578138] [2021-03-25 00:04:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:55,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 00:04:55,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 00:04:55,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:55,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:55,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 00:04:55,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 00:04:55,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:55,553 INFO L142 QuantifierPusher]: treesize reduction 11, result has 71.1 percent of original size [2021-03-25 00:04:55,554 INFO L147 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size 24 [2021-03-25 00:04:55,575 INFO L142 QuantifierPusher]: treesize reduction 36, result has 21.7 percent of original size [2021-03-25 00:04:55,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:55,581 INFO L142 QuantifierPusher]: treesize reduction 36, result has 21.7 percent of original size [2021-03-25 00:04:55,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:55,592 INFO L142 QuantifierPusher]: treesize reduction 10, result has 61.5 percent of original size [2021-03-25 00:04:55,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:55,607 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-03-25 00:04:55,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:55,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:55,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706578138] [2021-03-25 00:04:55,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:55,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:04:55,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531396509] [2021-03-25 00:04:55,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:04:55,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:55,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:04:55,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:04:55,610 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:55,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 121 transitions, 1319 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:55,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:55,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:55,722 INFO L129 PetriNetUnfolder]: 72/434 cut-off events. [2021-03-25 00:04:55,722 INFO L130 PetriNetUnfolder]: For 3015/3086 co-relation queries the response was YES. [2021-03-25 00:04:55,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 434 events. 72/434 cut-off events. For 3015/3086 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2628 event pairs, 30 based on Foata normal form. 14/442 useless extension candidates. Maximal degree in co-relation 2088. Up to 199 conditions per place. [2021-03-25 00:04:55,725 INFO L132 encePairwiseOnDemand]: 54/63 looper letters, 63 selfloop transitions, 12 changer transitions 14/119 dead transitions. [2021-03-25 00:04:55,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 119 transitions, 1455 flow [2021-03-25 00:04:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:04:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:04:55,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 304 transitions. [2021-03-25 00:04:55,726 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2021-03-25 00:04:55,726 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 304 transitions. [2021-03-25 00:04:55,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 304 transitions. [2021-03-25 00:04:55,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:55,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 304 transitions. [2021-03-25 00:04:55,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,726 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,727 INFO L185 Difference]: Start difference. First operand has 199 places, 121 transitions, 1319 flow. Second operand 8 states and 304 transitions. [2021-03-25 00:04:55,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 119 transitions, 1455 flow [2021-03-25 00:04:55,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 119 transitions, 1256 flow, removed 27 selfloop flow, removed 16 redundant places. [2021-03-25 00:04:55,736 INFO L241 Difference]: Finished difference. Result has 183 places, 105 transitions, 917 flow [2021-03-25 00:04:55,736 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=917, PETRI_PLACES=183, PETRI_TRANSITIONS=105} [2021-03-25 00:04:55,736 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 135 predicate places. [2021-03-25 00:04:55,736 INFO L480 AbstractCegarLoop]: Abstraction has has 183 places, 105 transitions, 917 flow [2021-03-25 00:04:55,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,736 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:55,736 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] [2021-03-25 00:04:55,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-25 00:04:55,736 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:55,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:55,737 INFO L82 PathProgramCache]: Analyzing trace with hash 525225634, now seen corresponding path program 71 times [2021-03-25 00:04:55,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:55,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888835484] [2021-03-25 00:04:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:55,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:55,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:55,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:04:55,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:04:55,766 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-25 00:04:55,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:55,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:55,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:55,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888835484] [2021-03-25 00:04:55,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:55,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:04:55,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395630290] [2021-03-25 00:04:55,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:04:55,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:55,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:04:55,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:04:55,784 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:55,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 105 transitions, 917 flow. Second operand has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:55,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:55,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:55,898 INFO L129 PetriNetUnfolder]: 59/304 cut-off events. [2021-03-25 00:04:55,898 INFO L130 PetriNetUnfolder]: For 1353/1378 co-relation queries the response was YES. [2021-03-25 00:04:55,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 304 events. 59/304 cut-off events. For 1353/1378 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1489 event pairs, 28 based on Foata normal form. 13/310 useless extension candidates. Maximal degree in co-relation 1232. Up to 98 conditions per place. [2021-03-25 00:04:55,900 INFO L132 encePairwiseOnDemand]: 54/63 looper letters, 39 selfloop transitions, 15 changer transitions 10/87 dead transitions. [2021-03-25 00:04:55,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 87 transitions, 884 flow [2021-03-25 00:04:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 00:04:55,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 00:04:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 372 transitions. [2021-03-25 00:04:55,901 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2021-03-25 00:04:55,901 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 372 transitions. [2021-03-25 00:04:55,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 372 transitions. [2021-03-25 00:04:55,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:55,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 372 transitions. [2021-03-25 00:04:55,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 37.2) internal successors, (372), 10 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,902 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,902 INFO L185 Difference]: Start difference. First operand has 183 places, 105 transitions, 917 flow. Second operand 10 states and 372 transitions. [2021-03-25 00:04:55,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 87 transitions, 884 flow [2021-03-25 00:04:55,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 87 transitions, 721 flow, removed 9 selfloop flow, removed 29 redundant places. [2021-03-25 00:04:55,906 INFO L241 Difference]: Finished difference. Result has 147 places, 77 transitions, 545 flow [2021-03-25 00:04:55,906 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=545, PETRI_PLACES=147, PETRI_TRANSITIONS=77} [2021-03-25 00:04:55,906 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 99 predicate places. [2021-03-25 00:04:55,906 INFO L480 AbstractCegarLoop]: Abstraction has has 147 places, 77 transitions, 545 flow [2021-03-25 00:04:55,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:55,907 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:55,907 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] [2021-03-25 00:04:55,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-25 00:04:55,907 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:55,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:55,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1307882380, now seen corresponding path program 72 times [2021-03-25 00:04:55,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:55,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122217946] [2021-03-25 00:04:55,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:55,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:55,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:55,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 00:04:55,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 00:04:55,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:55,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:55,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:55,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:55,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:55,988 INFO L142 QuantifierPusher]: treesize reduction 27, result has 35.7 percent of original size [2021-03-25 00:04:55,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 00:04:56,002 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-25 00:04:56,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 00:04:56,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:56,032 INFO L142 QuantifierPusher]: treesize reduction 1, result has 94.4 percent of original size [2021-03-25 00:04:56,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:56,047 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 00:04:56,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:56,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:56,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122217946] [2021-03-25 00:04:56,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:56,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-25 00:04:56,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727421268] [2021-03-25 00:04:56,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 00:04:56,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:56,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 00:04:56,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-03-25 00:04:56,050 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:56,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 77 transitions, 545 flow. Second operand has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:56,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:56,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:56,174 INFO L129 PetriNetUnfolder]: 44/237 cut-off events. [2021-03-25 00:04:56,174 INFO L130 PetriNetUnfolder]: For 735/762 co-relation queries the response was YES. [2021-03-25 00:04:56,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 237 events. 44/237 cut-off events. For 735/762 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1041 event pairs, 23 based on Foata normal form. 7/236 useless extension candidates. Maximal degree in co-relation 843. Up to 99 conditions per place. [2021-03-25 00:04:56,175 INFO L132 encePairwiseOnDemand]: 53/63 looper letters, 35 selfloop transitions, 4 changer transitions 13/75 dead transitions. [2021-03-25 00:04:56,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 75 transitions, 627 flow [2021-03-25 00:04:56,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 00:04:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 00:04:56,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 369 transitions. [2021-03-25 00:04:56,176 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2021-03-25 00:04:56,176 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 369 transitions. [2021-03-25 00:04:56,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 369 transitions. [2021-03-25 00:04:56,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:56,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 369 transitions. [2021-03-25 00:04:56,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 36.9) internal successors, (369), 10 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,177 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,177 INFO L185 Difference]: Start difference. First operand has 147 places, 77 transitions, 545 flow. Second operand 10 states and 369 transitions. [2021-03-25 00:04:56,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 75 transitions, 627 flow [2021-03-25 00:04:56,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 75 transitions, 567 flow, removed 5 selfloop flow, removed 14 redundant places. [2021-03-25 00:04:56,180 INFO L241 Difference]: Finished difference. Result has 132 places, 62 transitions, 376 flow [2021-03-25 00:04:56,180 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=376, PETRI_PLACES=132, PETRI_TRANSITIONS=62} [2021-03-25 00:04:56,180 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 84 predicate places. [2021-03-25 00:04:56,180 INFO L480 AbstractCegarLoop]: Abstraction has has 132 places, 62 transitions, 376 flow [2021-03-25 00:04:56,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,180 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:56,180 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:04:56,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-25 00:04:56,180 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:56,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:56,181 INFO L82 PathProgramCache]: Analyzing trace with hash -928426760, now seen corresponding path program 73 times [2021-03-25 00:04:56,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:56,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951281186] [2021-03-25 00:04:56,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:56,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:56,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:56,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:56,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:56,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:56,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:04:56,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:56,231 INFO L142 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-03-25 00:04:56,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:56,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:56,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:56,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:56,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:56,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951281186] [2021-03-25 00:04:56,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:56,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 00:04:56,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283511448] [2021-03-25 00:04:56,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 00:04:56,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:56,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 00:04:56,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-25 00:04:56,288 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:56,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 62 transitions, 376 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:56,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:56,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:56,457 INFO L129 PetriNetUnfolder]: 27/165 cut-off events. [2021-03-25 00:04:56,457 INFO L130 PetriNetUnfolder]: For 400/412 co-relation queries the response was YES. [2021-03-25 00:04:56,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 165 events. 27/165 cut-off events. For 400/412 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 599 event pairs, 3 based on Foata normal form. 11/174 useless extension candidates. Maximal degree in co-relation 540. Up to 22 conditions per place. [2021-03-25 00:04:56,457 INFO L132 encePairwiseOnDemand]: 52/63 looper letters, 19 selfloop transitions, 17 changer transitions 8/67 dead transitions. [2021-03-25 00:04:56,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 67 transitions, 496 flow [2021-03-25 00:04:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 00:04:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 00:04:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 447 transitions. [2021-03-25 00:04:56,458 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5912698412698413 [2021-03-25 00:04:56,458 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 447 transitions. [2021-03-25 00:04:56,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 447 transitions. [2021-03-25 00:04:56,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:56,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 447 transitions. [2021-03-25 00:04:56,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 37.25) internal successors, (447), 12 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,460 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,460 INFO L185 Difference]: Start difference. First operand has 132 places, 62 transitions, 376 flow. Second operand 12 states and 447 transitions. [2021-03-25 00:04:56,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 67 transitions, 496 flow [2021-03-25 00:04:56,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 67 transitions, 448 flow, removed 9 selfloop flow, removed 12 redundant places. [2021-03-25 00:04:56,462 INFO L241 Difference]: Finished difference. Result has 116 places, 54 transitions, 316 flow [2021-03-25 00:04:56,462 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=316, PETRI_PLACES=116, PETRI_TRANSITIONS=54} [2021-03-25 00:04:56,462 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 68 predicate places. [2021-03-25 00:04:56,462 INFO L480 AbstractCegarLoop]: Abstraction has has 116 places, 54 transitions, 316 flow [2021-03-25 00:04:56,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,462 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:56,462 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] [2021-03-25 00:04:56,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-25 00:04:56,462 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:56,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:56,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1705860800, now seen corresponding path program 74 times [2021-03-25 00:04:56,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:56,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870136836] [2021-03-25 00:04:56,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:56,479 INFO L142 QuantifierPusher]: treesize reduction 25, result has 51.0 percent of original size [2021-03-25 00:04:56,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 00:04:56,495 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 00:04:56,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:56,498 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-03-25 00:04:56,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:56,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:04:56,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:56,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:56,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:56,538 INFO L142 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-03-25 00:04:56,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 00:04:56,545 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-03-25 00:04:56,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:56,546 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-25 00:04:56,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:56,558 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-25 00:04:56,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:04:56,572 INFO L142 QuantifierPusher]: treesize reduction 24, result has 22.6 percent of original size [2021-03-25 00:04:56,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:56,581 INFO L142 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-03-25 00:04:56,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:56,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:56,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870136836] [2021-03-25 00:04:56,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:56,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 00:04:56,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746445530] [2021-03-25 00:04:56,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 00:04:56,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:56,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 00:04:56,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-03-25 00:04:56,583 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:56,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 54 transitions, 316 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:56,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:56,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:56,682 INFO L129 PetriNetUnfolder]: 15/122 cut-off events. [2021-03-25 00:04:56,682 INFO L130 PetriNetUnfolder]: For 341/348 co-relation queries the response was YES. [2021-03-25 00:04:56,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 122 events. 15/122 cut-off events. For 341/348 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 357 event pairs, 8 based on Foata normal form. 4/125 useless extension candidates. Maximal degree in co-relation 404. Up to 23 conditions per place. [2021-03-25 00:04:56,683 INFO L132 encePairwiseOnDemand]: 55/63 looper letters, 20 selfloop transitions, 6 changer transitions 6/55 dead transitions. [2021-03-25 00:04:56,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 55 transitions, 387 flow [2021-03-25 00:04:56,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:04:56,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:04:56,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 334 transitions. [2021-03-25 00:04:56,683 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5890652557319224 [2021-03-25 00:04:56,684 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 334 transitions. [2021-03-25 00:04:56,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 334 transitions. [2021-03-25 00:04:56,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:56,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 334 transitions. [2021-03-25 00:04:56,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 37.111111111111114) internal successors, (334), 9 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,684 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,684 INFO L185 Difference]: Start difference. First operand has 116 places, 54 transitions, 316 flow. Second operand 9 states and 334 transitions. [2021-03-25 00:04:56,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 55 transitions, 387 flow [2021-03-25 00:04:56,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 55 transitions, 325 flow, removed 12 selfloop flow, removed 14 redundant places. [2021-03-25 00:04:56,686 INFO L241 Difference]: Finished difference. Result has 101 places, 48 transitions, 224 flow [2021-03-25 00:04:56,686 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=224, PETRI_PLACES=101, PETRI_TRANSITIONS=48} [2021-03-25 00:04:56,686 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 53 predicate places. [2021-03-25 00:04:56,686 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 48 transitions, 224 flow [2021-03-25 00:04:56,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,686 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:56,686 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] [2021-03-25 00:04:56,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-25 00:04:56,687 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:56,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:56,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1872252988, now seen corresponding path program 75 times [2021-03-25 00:04:56,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:56,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185089519] [2021-03-25 00:04:56,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:56,701 INFO L142 QuantifierPusher]: treesize reduction 25, result has 47.9 percent of original size [2021-03-25 00:04:56,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 00:04:56,714 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-03-25 00:04:56,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:56,715 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:04:56,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:56,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:56,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:56,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:04:56,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:56,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:56,752 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-03-25 00:04:56,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 00:04:56,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:56,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:56,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:56,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:56,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185089519] [2021-03-25 00:04:56,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:56,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 00:04:56,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786250601] [2021-03-25 00:04:56,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 00:04:56,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:56,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 00:04:56,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-03-25 00:04:56,792 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:56,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 48 transitions, 224 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:56,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:56,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:56,916 INFO L129 PetriNetUnfolder]: 14/103 cut-off events. [2021-03-25 00:04:56,916 INFO L130 PetriNetUnfolder]: For 177/183 co-relation queries the response was YES. [2021-03-25 00:04:56,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 103 events. 14/103 cut-off events. For 177/183 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 255 event pairs, 2 based on Foata normal form. 7/109 useless extension candidates. Maximal degree in co-relation 315. Up to 24 conditions per place. [2021-03-25 00:04:56,916 INFO L132 encePairwiseOnDemand]: 54/63 looper letters, 14 selfloop transitions, 10 changer transitions 6/52 dead transitions. [2021-03-25 00:04:56,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 52 transitions, 308 flow [2021-03-25 00:04:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 00:04:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 00:04:56,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 368 transitions. [2021-03-25 00:04:56,917 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5841269841269842 [2021-03-25 00:04:56,917 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 368 transitions. [2021-03-25 00:04:56,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 368 transitions. [2021-03-25 00:04:56,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:56,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 368 transitions. [2021-03-25 00:04:56,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 36.8) internal successors, (368), 10 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,918 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,918 INFO L185 Difference]: Start difference. First operand has 101 places, 48 transitions, 224 flow. Second operand 10 states and 368 transitions. [2021-03-25 00:04:56,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 52 transitions, 308 flow [2021-03-25 00:04:56,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 52 transitions, 279 flow, removed 3 selfloop flow, removed 11 redundant places. [2021-03-25 00:04:56,920 INFO L241 Difference]: Finished difference. Result has 96 places, 45 transitions, 201 flow [2021-03-25 00:04:56,920 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=201, PETRI_PLACES=96, PETRI_TRANSITIONS=45} [2021-03-25 00:04:56,920 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 48 predicate places. [2021-03-25 00:04:56,920 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 45 transitions, 201 flow [2021-03-25 00:04:56,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:56,920 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:56,920 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] [2021-03-25 00:04:56,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-25 00:04:56,920 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:56,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:56,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2077455344, now seen corresponding path program 76 times [2021-03-25 00:04:56,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:56,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781878241] [2021-03-25 00:04:56,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:56,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:56,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:56,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:56,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 00:04:56,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 00:04:56,970 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-03-25 00:04:56,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 00:04:56,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:56,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 00:04:57,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:57,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:57,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:57,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:57,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:57,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781878241] [2021-03-25 00:04:57,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:57,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:04:57,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656085993] [2021-03-25 00:04:57,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:04:57,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:57,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:04:57,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:04:57,016 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-25 00:04:57,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 45 transitions, 201 flow. Second operand has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:57,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:57,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-25 00:04:57,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:57,059 INFO L129 PetriNetUnfolder]: 4/39 cut-off events. [2021-03-25 00:04:57,059 INFO L130 PetriNetUnfolder]: For 54/56 co-relation queries the response was YES. [2021-03-25 00:04:57,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 39 events. 4/39 cut-off events. For 54/56 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 3/42 useless extension candidates. Maximal degree in co-relation 114. Up to 7 conditions per place. [2021-03-25 00:04:57,060 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2021-03-25 00:04:57,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 30 transitions, 174 flow [2021-03-25 00:04:57,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:04:57,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:04:57,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 256 transitions. [2021-03-25 00:04:57,060 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5804988662131519 [2021-03-25 00:04:57,060 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 256 transitions. [2021-03-25 00:04:57,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 256 transitions. [2021-03-25 00:04:57,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:57,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 256 transitions. [2021-03-25 00:04:57,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:57,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:57,061 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:57,061 INFO L185 Difference]: Start difference. First operand has 96 places, 45 transitions, 201 flow. Second operand 7 states and 256 transitions. [2021-03-25 00:04:57,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 30 transitions, 174 flow [2021-03-25 00:04:57,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 30 transitions, 137 flow, removed 5 selfloop flow, removed 14 redundant places. [2021-03-25 00:04:57,062 INFO L241 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2021-03-25 00:04:57,062 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2021-03-25 00:04:57,062 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2021-03-25 00:04:57,062 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2021-03-25 00:04:57,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:57,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-25 00:04:57,065 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 12:04:57 BasicIcfg [2021-03-25 00:04:57,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 00:04:57,066 INFO L168 Benchmark]: Toolchain (without parser) took 217420.42 ms. Allocated memory was 255.9 MB in the beginning and 14.5 GB in the end (delta: 14.3 GB). Free memory was 236.4 MB in the beginning and 8.3 GB in the end (delta: -8.0 GB). Peak memory consumption was 6.3 GB. Max. memory is 16.0 GB. [2021-03-25 00:04:57,066 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:04:57,066 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.35 ms. Allocated memory is still 255.9 MB. Free memory was 236.2 MB in the beginning and 234.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 00:04:57,066 INFO L168 Benchmark]: Boogie Preprocessor took 14.59 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 233.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:04:57,066 INFO L168 Benchmark]: RCFGBuilder took 326.21 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 234.6 MB in the end (delta: -935.2 kB). Peak memory consumption was 16.7 MB. Max. memory is 16.0 GB. [2021-03-25 00:04:57,066 INFO L168 Benchmark]: TraceAbstraction took 217049.98 ms. Allocated memory was 255.9 MB in the beginning and 14.5 GB in the end (delta: 14.3 GB). Free memory was 233.9 MB in the beginning and 8.3 GB in the end (delta: -8.0 GB). Peak memory consumption was 6.3 GB. Max. memory is 16.0 GB. [2021-03-25 00:04:57,067 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 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.35 ms. Allocated memory is still 255.9 MB. Free memory was 236.2 MB in the beginning and 234.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.59 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 233.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 326.21 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 234.6 MB in the end (delta: -935.2 kB). Peak memory consumption was 16.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 217049.98 ms. Allocated memory was 255.9 MB in the beginning and 14.5 GB in the end (delta: 14.3 GB). Free memory was 233.9 MB in the beginning and 8.3 GB in the end (delta: -8.0 GB). Peak memory consumption was 6.3 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 516.1ms, 58 PlacesBefore, 48 PlacesAfterwards, 48 TransitionsBefore, 38 TransitionsAfterwards, 1170 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 2728 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 973, positive: 873, positive conditional: 0, positive unconditional: 873, negative: 100, negative conditional: 0, negative unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 688, positive: 615, positive conditional: 0, positive unconditional: 615, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 688, positive: 615, positive conditional: 0, positive unconditional: 615, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 688, positive: 590, positive conditional: 0, positive unconditional: 590, negative: 98, negative conditional: 0, negative unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 98, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 310, positive: 64, positive conditional: 0, positive unconditional: 64, negative: 246, negative conditional: 0, negative unconditional: 246, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 973, positive: 258, positive conditional: 0, positive unconditional: 258, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 688, unknown conditional: 0, unknown unconditional: 688] , Statistics on independence cache: Total cache size (in pairs): 373, Positive cache size: 321, Positive conditional cache size: 0, Positive unconditional cache size: 321, Negative cache size: 52, Negative conditional cache size: 0, Negative unconditional cache size: 52 - PositiveResult [Line: 82]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 27.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 216893.4ms, OverallIterations: 76, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 207356.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 603.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 973 SDtfs, 2766 SDslu, 612 SDs, 0 SdLazy, 17772 SolverSat, 2586 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9017.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1105 GetRequests, 171 SyntacticMatches, 72 SemanticMatches, 862 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2098 ImplicationChecksByTransitivity, 10538.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=27027occurred in iteration=34, InterpolantAutomatonStates: 867, 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: 62.0ms SsaConstructionTime, 390.8ms SatisfiabilityAnalysisTime, 8119.2ms InterpolantComputationTime, 2888 NumberOfCodeBlocks, 2888 NumberOfCodeBlocksAsserted, 76 NumberOfCheckSat, 2812 ConstructedInterpolants, 0 QuantifiedInterpolants, 17896 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 76 InterpolantComputations, 76 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...