/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/ticket-8.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 00:20:08,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 00:20:08,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 00:20:08,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 00:20:08,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 00:20:08,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 00:20:08,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 00:20:08,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 00:20:08,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 00:20:08,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 00:20:08,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 00:20:08,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 00:20:08,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 00:20:08,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 00:20:08,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 00:20:08,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 00:20:08,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 00:20:08,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 00:20:08,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 00:20:08,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 00:20:08,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 00:20:08,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 00:20:08,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 00:20:08,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 00:20:08,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 00:20:08,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 00:20:08,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 00:20:08,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 00:20:08,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 00:20:08,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 00:20:08,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 00:20:08,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 00:20:08,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 00:20:08,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 00:20:08,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 00:20:08,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 00:20:08,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 00:20:08,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 00:20:08,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 00:20:08,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 00:20:08,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 00:20:08,285 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 00:20:08,303 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 00:20:08,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 00:20:08,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 00:20:08,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 00:20:08,305 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 00:20:08,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 00:20:08,305 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 00:20:08,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 00:20:08,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 00:20:08,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 00:20:08,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 00:20:08,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 00:20:08,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 00:20:08,306 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 00:20:08,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 00:20:08,307 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 00:20:08,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 00:20:08,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 00:20:08,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 00:20:08,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 00:20:08,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 00:20:08,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 00:20:08,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 00:20:08,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 00:20:08,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 00:20:08,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 00:20:08,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 00:20:08,309 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 00:20:08,309 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 00:20:08,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 00:20:08,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 00:20:08,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 00:20:08,578 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 00:20:08,579 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 00:20:08,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-8.wvr.bpl [2021-03-25 00:20:08,580 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-8.wvr.bpl' [2021-03-25 00:20:08,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 00:20:08,621 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 00:20:08,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 00:20:08,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 00:20:08,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 00:20:08,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:20:08" (1/1) ... [2021-03-25 00:20:08,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:20:08" (1/1) ... [2021-03-25 00:20:08,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 00:20:08,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 00:20:08,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 00:20:08,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 00:20:08,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:20:08" (1/1) ... [2021-03-25 00:20:08,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:20:08" (1/1) ... [2021-03-25 00:20:08,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:20:08" (1/1) ... [2021-03-25 00:20:08,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:20:08" (1/1) ... [2021-03-25 00:20:08,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:20:08" (1/1) ... [2021-03-25 00:20:08,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:20:08" (1/1) ... [2021-03-25 00:20:08,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:20:08" (1/1) ... [2021-03-25 00:20:08,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 00:20:08,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 00:20:08,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 00:20:08,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 00:20:08,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:20:08" (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 00:20:08,730 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 00:20:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 00:20:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 00:20:08,732 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 00:20:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 00:20:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 00:20:08,733 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 00:20:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 00:20:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 00:20:08,733 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 00:20:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 00:20:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 00:20:08,733 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-25 00:20:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-25 00:20:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-25 00:20:08,734 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-25 00:20:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-25 00:20:08,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-25 00:20:08,734 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-25 00:20:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-25 00:20:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-25 00:20:08,735 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2021-03-25 00:20:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2021-03-25 00:20:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2021-03-25 00:20:08,736 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration [2021-03-25 00:20:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2021-03-25 00:20:08,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2021-03-25 00:20:08,738 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 00:20:08,953 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 00:20:08,953 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 00:20:08,955 INFO L202 PluginConnector]: Adding new model ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:20:08 BoogieIcfgContainer [2021-03-25 00:20:08,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 00:20:08,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 00:20:08,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 00:20:08,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 00:20:08,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:20:08" (1/2) ... [2021-03-25 00:20:08,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b33641 and model type ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 12:20:08, skipping insertion in model container [2021-03-25 00:20:08,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:20:08" (2/2) ... [2021-03-25 00:20:08,960 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-8.wvr.bpl [2021-03-25 00:20:08,965 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 00:20:08,967 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 00:20:08,968 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 00:20:09,061 INFO L149 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2021-03-25 00:20:09,076 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-03-25 00:20:09,096 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 00:20:09,096 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 00:20:09,096 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 00:20:09,096 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 00:20:09,096 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 00:20:09,097 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 00:20:09,097 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 00:20:09,097 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 00:20:09,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 70 transitions, 204 flow [2021-03-25 00:20:09,153 INFO L129 PetriNetUnfolder]: 0/62 cut-off events. [2021-03-25 00:20:09,154 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-25 00:20:09,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 62 events. 0/62 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 179 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 00:20:09,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 70 transitions, 204 flow [2021-03-25 00:20:09,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 60 transitions, 168 flow [2021-03-25 00:20:09,161 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 00:20:09,175 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 60 transitions, 168 flow [2021-03-25 00:20:09,178 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 60 transitions, 168 flow [2021-03-25 00:20:09,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 60 transitions, 168 flow [2021-03-25 00:20:09,220 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2021-03-25 00:20:09,220 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-25 00:20:09,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 60 events. 0/60 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 178 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 00:20:09,228 INFO L142 LiptonReduction]: Number of co-enabled transitions 2044 [2021-03-25 00:20:11,079 INFO L154 LiptonReduction]: Checked pairs total: 2835 [2021-03-25 00:20:11,079 INFO L156 LiptonReduction]: Total number of compositions: 23 [2021-03-25 00:20:11,081 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1921 [2021-03-25 00:20:11,095 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2021-03-25 00:20:11,095 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-25 00:20:11,095 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:20:11,096 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] [2021-03-25 00:20:11,096 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:20:11,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:20:11,100 INFO L82 PathProgramCache]: Analyzing trace with hash -272022586, now seen corresponding path program 1 times [2021-03-25 00:20:11,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:20:11,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078932858] [2021-03-25 00:20:11,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:20:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:20:11,302 INFO L142 QuantifierPusher]: treesize reduction 17, result has 43.3 percent of original size [2021-03-25 00:20:11,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:20:11,318 INFO L142 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-03-25 00:20:11,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-25 00:20:11,325 INFO L142 QuantifierPusher]: treesize reduction 8, result has 42.9 percent of original size [2021-03-25 00:20:11,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-25 00:20:11,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:11,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 00:20:11,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:11,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:20:11,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:11,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:20:11,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:11,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:20:11,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:11,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:20:11,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:11,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:20:11,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:11,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 00:20:11,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:20:11,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078932858] [2021-03-25 00:20:11,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:20:11,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:20:11,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688095076] [2021-03-25 00:20:11,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:20:11,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:20:11,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:20:11,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:20:11,375 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 93 [2021-03-25 00:20:11,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 37 transitions, 122 flow. Second operand has 6 states, 6 states have (on average 58.166666666666664) internal successors, (349), 6 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:11,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:20:11,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 93 [2021-03-25 00:20:11,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:20:17,348 INFO L129 PetriNetUnfolder]: 55199/69678 cut-off events. [2021-03-25 00:20:17,348 INFO L130 PetriNetUnfolder]: For 462/462 co-relation queries the response was YES. [2021-03-25 00:20:17,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138232 conditions, 69678 events. 55199/69678 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 3578. Compared 398682 event pairs, 29181 based on Foata normal form. 1/69181 useless extension candidates. Maximal degree in co-relation 138190. Up to 34992 conditions per place. [2021-03-25 00:20:18,010 INFO L132 encePairwiseOnDemand]: 74/93 looper letters, 38 selfloop transitions, 17 changer transitions 1/74 dead transitions. [2021-03-25 00:20:18,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 308 flow [2021-03-25 00:20:18,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:20:18,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:20:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 332 transitions. [2021-03-25 00:20:18,020 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7139784946236559 [2021-03-25 00:20:18,021 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 332 transitions. [2021-03-25 00:20:18,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 332 transitions. [2021-03-25 00:20:18,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:20:18,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 332 transitions. [2021-03-25 00:20:18,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 66.4) internal successors, (332), 5 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:18,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:18,032 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:18,034 INFO L185 Difference]: Start difference. First operand has 62 places, 37 transitions, 122 flow. Second operand 5 states and 332 transitions. [2021-03-25 00:20:18,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 308 flow [2021-03-25 00:20:18,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 74 transitions, 276 flow, removed 0 selfloop flow, removed 16 redundant places. [2021-03-25 00:20:18,083 INFO L241 Difference]: Finished difference. Result has 53 places, 52 transitions, 214 flow [2021-03-25 00:20:18,084 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2021-03-25 00:20:18,085 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, -9 predicate places. [2021-03-25 00:20:18,085 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 214 flow [2021-03-25 00:20:18,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 58.166666666666664) internal successors, (349), 6 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:18,085 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:20:18,086 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] [2021-03-25 00:20:18,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 00:20:18,086 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:20:18,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:20:18,087 INFO L82 PathProgramCache]: Analyzing trace with hash 264670664, now seen corresponding path program 2 times [2021-03-25 00:20:18,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:20:18,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220663799] [2021-03-25 00:20:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:20:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:20:18,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:18,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:20:18,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:18,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:18,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:18,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:18,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:18,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:18,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:18,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:18,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:18,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:18,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:18,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:18,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:18,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:18,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:18,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:18,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:18,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:20:18,163 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 00:20:18,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220663799] [2021-03-25 00:20:18,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:20:18,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:20:18,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260462064] [2021-03-25 00:20:18,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:20:18,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:20:18,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:20:18,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:20:18,167 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 93 [2021-03-25 00:20:18,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 47.857142857142854) internal successors, (335), 7 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:18,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:20:18,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 93 [2021-03-25 00:20:18,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:20:44,010 INFO L129 PetriNetUnfolder]: 270102/336863 cut-off events. [2021-03-25 00:20:44,011 INFO L130 PetriNetUnfolder]: For 199130/212009 co-relation queries the response was YES. [2021-03-25 00:20:44,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1015284 conditions, 336863 events. 270102/336863 cut-off events. For 199130/212009 co-relation queries the response was YES. Maximal size of possible extension queue 13100. Compared 2034952 event pairs, 50020 based on Foata normal form. 2651/339293 useless extension candidates. Maximal degree in co-relation 1011914. Up to 153360 conditions per place. [2021-03-25 00:20:46,144 INFO L132 encePairwiseOnDemand]: 75/93 looper letters, 51 selfloop transitions, 84 changer transitions 0/152 dead transitions. [2021-03-25 00:20:46,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 152 transitions, 905 flow [2021-03-25 00:20:46,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:20:46,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:20:46,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 417 transitions. [2021-03-25 00:20:46,263 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6405529953917051 [2021-03-25 00:20:46,263 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 417 transitions. [2021-03-25 00:20:46,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 417 transitions. [2021-03-25 00:20:46,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:20:46,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 417 transitions. [2021-03-25 00:20:46,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.57142857142857) internal successors, (417), 7 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 00:20:46,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:46,267 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:46,267 INFO L185 Difference]: Start difference. First operand has 53 places, 52 transitions, 214 flow. Second operand 7 states and 417 transitions. [2021-03-25 00:20:46,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 152 transitions, 905 flow [2021-03-25 00:20:46,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 152 transitions, 842 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-25 00:20:46,318 INFO L241 Difference]: Finished difference. Result has 59 places, 127 transitions, 835 flow [2021-03-25 00:20:46,318 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=835, PETRI_PLACES=59, PETRI_TRANSITIONS=127} [2021-03-25 00:20:46,319 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, -3 predicate places. [2021-03-25 00:20:46,319 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 127 transitions, 835 flow [2021-03-25 00:20:46,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 47.857142857142854) internal successors, (335), 7 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:46,320 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:20:46,320 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] [2021-03-25 00:20:46,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 00:20:46,320 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:20:46,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:20:46,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1022957338, now seen corresponding path program 3 times [2021-03-25 00:20:46,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:20:46,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153148088] [2021-03-25 00:20:46,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:20:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:20:46,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:46,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:20:46,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:46,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:46,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:46,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:46,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:46,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:20:46,379 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 00:20:46,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153148088] [2021-03-25 00:20:46,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:20:46,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:20:46,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420430509] [2021-03-25 00:20:46,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:20:46,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:20:46,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:20:46,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:20:46,395 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 93 [2021-03-25 00:20:46,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 127 transitions, 835 flow. Second operand has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:46,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:20:46,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 93 [2021-03-25 00:20:46,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:21:16,668 INFO L129 PetriNetUnfolder]: 273172/339925 cut-off events. [2021-03-25 00:21:16,668 INFO L130 PetriNetUnfolder]: For 696228/746765 co-relation queries the response was YES. [2021-03-25 00:21:17,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1496205 conditions, 339925 events. 273172/339925 cut-off events. For 696228/746765 co-relation queries the response was YES. Maximal size of possible extension queue 13329. Compared 2008094 event pairs, 60554 based on Foata normal form. 602/340302 useless extension candidates. Maximal degree in co-relation 1493407. Up to 330249 conditions per place. [2021-03-25 00:21:19,225 INFO L132 encePairwiseOnDemand]: 77/93 looper letters, 142 selfloop transitions, 87 changer transitions 0/246 dead transitions. [2021-03-25 00:21:19,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 246 transitions, 2167 flow [2021-03-25 00:21:19,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:21:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:21:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 288 transitions. [2021-03-25 00:21:19,378 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6193548387096774 [2021-03-25 00:21:19,378 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 288 transitions. [2021-03-25 00:21:19,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 288 transitions. [2021-03-25 00:21:19,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:21:19,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 288 transitions. [2021-03-25 00:21:19,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:19,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:19,381 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:19,381 INFO L185 Difference]: Start difference. First operand has 59 places, 127 transitions, 835 flow. Second operand 5 states and 288 transitions. [2021-03-25 00:21:19,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 246 transitions, 2167 flow [2021-03-25 00:21:19,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 246 transitions, 2080 flow, removed 39 selfloop flow, removed 1 redundant places. [2021-03-25 00:21:19,953 INFO L241 Difference]: Finished difference. Result has 64 places, 205 transitions, 1755 flow [2021-03-25 00:21:19,953 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1755, PETRI_PLACES=64, PETRI_TRANSITIONS=205} [2021-03-25 00:21:19,953 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2021-03-25 00:21:19,953 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 205 transitions, 1755 flow [2021-03-25 00:21:19,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:19,954 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:21:19,954 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] [2021-03-25 00:21:19,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 00:21:19,954 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:21:19,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:21:19,955 INFO L82 PathProgramCache]: Analyzing trace with hash 68690522, now seen corresponding path program 4 times [2021-03-25 00:21:19,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:21:19,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745421701] [2021-03-25 00:21:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:21:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:21:20,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:20,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:21:20,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:20,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:20,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:20,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:20,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:20,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:20,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:20,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:20,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:20,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:21:20,035 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 00:21:20,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745421701] [2021-03-25 00:21:20,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:21:20,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:21:20,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894541808] [2021-03-25 00:21:20,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:21:20,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:21:20,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:21:20,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:21:20,037 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 93 [2021-03-25 00:21:20,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 205 transitions, 1755 flow. Second operand has 7 states, 7 states have (on average 47.857142857142854) internal successors, (335), 7 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:20,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:21:20,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 93 [2021-03-25 00:21:20,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:21:53,206 INFO L129 PetriNetUnfolder]: 285952/355253 cut-off events. [2021-03-25 00:21:53,206 INFO L130 PetriNetUnfolder]: For 1001821/1040044 co-relation queries the response was YES. [2021-03-25 00:21:54,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1649161 conditions, 355253 events. 285952/355253 cut-off events. For 1001821/1040044 co-relation queries the response was YES. Maximal size of possible extension queue 14224. Compared 2115544 event pairs, 51508 based on Foata normal form. 3340/358367 useless extension candidates. Maximal degree in co-relation 1647065. Up to 163880 conditions per place. [2021-03-25 00:21:56,053 INFO L132 encePairwiseOnDemand]: 75/93 looper letters, 53 selfloop transitions, 225 changer transitions 0/295 dead transitions. [2021-03-25 00:21:56,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 295 transitions, 3125 flow [2021-03-25 00:21:56,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:21:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:21:56,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 417 transitions. [2021-03-25 00:21:56,055 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6405529953917051 [2021-03-25 00:21:56,055 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 417 transitions. [2021-03-25 00:21:56,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 417 transitions. [2021-03-25 00:21:56,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:21:56,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 417 transitions. [2021-03-25 00:21:56,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.57142857142857) internal successors, (417), 7 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 00:21:56,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:56,058 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:56,058 INFO L185 Difference]: Start difference. First operand has 64 places, 205 transitions, 1755 flow. Second operand 7 states and 417 transitions. [2021-03-25 00:21:56,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 295 transitions, 3125 flow [2021-03-25 00:22:02,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 295 transitions, 3116 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 00:22:02,894 INFO L241 Difference]: Finished difference. Result has 71 places, 270 transitions, 3008 flow [2021-03-25 00:22:02,894 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3008, PETRI_PLACES=71, PETRI_TRANSITIONS=270} [2021-03-25 00:22:02,895 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, 9 predicate places. [2021-03-25 00:22:02,895 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 270 transitions, 3008 flow [2021-03-25 00:22:02,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 47.857142857142854) internal successors, (335), 7 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:02,895 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:22:02,895 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] [2021-03-25 00:22:02,895 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 00:22:02,896 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:22:02,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:22:02,896 INFO L82 PathProgramCache]: Analyzing trace with hash 575664590, now seen corresponding path program 5 times [2021-03-25 00:22:02,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:22:02,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156844909] [2021-03-25 00:22:02,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:22:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:22:02,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:02,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:22:02,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:02,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:02,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:02,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:02,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:02,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:02,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:02,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:02,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:02,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:02,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:02,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:02,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:02,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:22:02,973 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 00:22:02,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156844909] [2021-03-25 00:22:02,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:22:02,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:22:02,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867681134] [2021-03-25 00:22:02,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:22:02,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:22:02,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:22:02,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:22:02,976 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 93 [2021-03-25 00:22:02,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 270 transitions, 3008 flow. Second operand has 7 states, 7 states have (on average 47.857142857142854) internal successors, (335), 7 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:02,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:22:02,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 93 [2021-03-25 00:22:02,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:22:46,677 INFO L129 PetriNetUnfolder]: 306204/381842 cut-off events. [2021-03-25 00:22:46,677 INFO L130 PetriNetUnfolder]: For 1513379/1558321 co-relation queries the response was YES. [2021-03-25 00:22:48,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2073836 conditions, 381842 events. 306204/381842 cut-off events. For 1513379/1558321 co-relation queries the response was YES. Maximal size of possible extension queue 15502. Compared 2328509 event pairs, 46826 based on Foata normal form. 4752/386352 useless extension candidates. Maximal degree in co-relation 2070681. Up to 177399 conditions per place. [2021-03-25 00:22:50,182 INFO L132 encePairwiseOnDemand]: 76/93 looper letters, 52 selfloop transitions, 310 changer transitions 0/379 dead transitions. [2021-03-25 00:22:50,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 379 transitions, 4967 flow [2021-03-25 00:22:50,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:22:50,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:22:50,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 418 transitions. [2021-03-25 00:22:50,184 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.642089093701997 [2021-03-25 00:22:50,184 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 418 transitions. [2021-03-25 00:22:50,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 418 transitions. [2021-03-25 00:22:50,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:22:50,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 418 transitions. [2021-03-25 00:22:50,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.714285714285715) internal successors, (418), 7 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:50,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:50,187 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:50,187 INFO L185 Difference]: Start difference. First operand has 71 places, 270 transitions, 3008 flow. Second operand 7 states and 418 transitions. [2021-03-25 00:22:50,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 379 transitions, 4967 flow [2021-03-25 00:22:56,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 379 transitions, 4584 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 00:22:56,563 INFO L241 Difference]: Finished difference. Result has 74 places, 355 transitions, 4486 flow [2021-03-25 00:22:56,563 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4486, PETRI_PLACES=74, PETRI_TRANSITIONS=355} [2021-03-25 00:22:56,563 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, 12 predicate places. [2021-03-25 00:22:56,563 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 355 transitions, 4486 flow [2021-03-25 00:22:56,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 47.857142857142854) internal successors, (335), 7 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:56,564 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:22:56,564 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] [2021-03-25 00:22:56,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 00:22:56,565 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:22:56,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:22:56,565 INFO L82 PathProgramCache]: Analyzing trace with hash -377731030, now seen corresponding path program 6 times [2021-03-25 00:22:56,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:22:56,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010243224] [2021-03-25 00:22:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:22:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:22:56,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:56,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:22:56,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:56,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:56,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:56,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:56,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:56,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:56,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:56,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:56,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:56,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:56,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:56,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:56,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:56,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:56,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:56,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:56,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:56,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:22:56,637 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 00:22:56,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010243224] [2021-03-25 00:22:56,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:22:56,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:22:56,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797224739] [2021-03-25 00:22:56,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:22:56,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:22:56,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:22:56,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:22:56,641 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 93 [2021-03-25 00:22:56,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 355 transitions, 4486 flow. Second operand has 9 states, 9 states have (on average 47.22222222222222) internal successors, (425), 9 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:56,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:22:56,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 93 [2021-03-25 00:22:56,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:24:03,650 INFO L129 PetriNetUnfolder]: 425421/535600 cut-off events. [2021-03-25 00:24:03,650 INFO L130 PetriNetUnfolder]: For 2530978/2575706 co-relation queries the response was YES. [2021-03-25 00:24:05,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2938416 conditions, 535600 events. 425421/535600 cut-off events. For 2530978/2575706 co-relation queries the response was YES. Maximal size of possible extension queue 21926. Compared 3422385 event pairs, 45288 based on Foata normal form. 9261/544659 useless extension candidates. Maximal degree in co-relation 2935010. Up to 257330 conditions per place. [2021-03-25 00:24:08,289 INFO L132 encePairwiseOnDemand]: 76/93 looper letters, 72 selfloop transitions, 666 changer transitions 0/755 dead transitions. [2021-03-25 00:24:08,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 755 transitions, 10125 flow [2021-03-25 00:24:08,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 00:24:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 00:24:08,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 608 transitions. [2021-03-25 00:24:08,291 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6537634408602151 [2021-03-25 00:24:08,291 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 608 transitions. [2021-03-25 00:24:08,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 608 transitions. [2021-03-25 00:24:08,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:24:08,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 608 transitions. [2021-03-25 00:24:08,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 60.8) internal successors, (608), 10 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 00:24:08,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:24:08,294 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:24:08,294 INFO L185 Difference]: Start difference. First operand has 74 places, 355 transitions, 4486 flow. Second operand 10 states and 608 transitions. [2021-03-25 00:24:08,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 755 transitions, 10125 flow [2021-03-25 00:24:22,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 755 transitions, 9470 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 00:24:22,213 INFO L241 Difference]: Finished difference. Result has 82 places, 711 transitions, 9866 flow [2021-03-25 00:24:22,214 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=4103, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9866, PETRI_PLACES=82, PETRI_TRANSITIONS=711} [2021-03-25 00:24:22,214 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, 20 predicate places. [2021-03-25 00:24:22,214 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 711 transitions, 9866 flow [2021-03-25 00:24:22,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 47.22222222222222) internal successors, (425), 9 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:24:22,214 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:24:22,214 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] [2021-03-25 00:24:22,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 00:24:22,214 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:24:22,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:24:22,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1391786400, now seen corresponding path program 7 times [2021-03-25 00:24:22,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:24:22,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353684893] [2021-03-25 00:24:22,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:24:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:24:22,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:24:22,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:24:22,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:24:22,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:24:22,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:24:22,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:24:22,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:24:22,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:24:22,245 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 00:24:22,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353684893] [2021-03-25 00:24:22,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:24:22,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:24:22,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001859414] [2021-03-25 00:24:22,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:24:22,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:24:22,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:24:22,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:24:22,247 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 93 [2021-03-25 00:24:22,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 711 transitions, 9866 flow. Second operand has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:24:22,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:24:22,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 93 [2021-03-25 00:24:22,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand