/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 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 00:34:46,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 00:34:46,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 00:34:46,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-12 00:34:46,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-12 00:34:46,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-12 00:34:46,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-12 00:34:46,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-12 00:34:46,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-12 00:34:46,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-12 00:34:46,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-12 00:34:46,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-12 00:34:46,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-12 00:34:46,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-12 00:34:46,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-12 00:34:46,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-12 00:34:46,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-12 00:34:46,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-12 00:34:46,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-12 00:34:46,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-12 00:34:46,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-12 00:34:46,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-12 00:34:46,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-12 00:34:46,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-12 00:34:46,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-12 00:34:46,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-12 00:34:46,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-12 00:34:46,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-12 00:34:46,247 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 [2021-03-12 00:34:46,281 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 00:34:46,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 00:34:46,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 00:34:46,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 00:34:46,285 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 00:34:46,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 00:34:46,286 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 00:34:46,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 00:34:46,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 00:34:46,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 00:34:46,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 00:34:46,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 00:34:46,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 00:34:46,288 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 00:34:46,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 00:34:46,288 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 00:34:46,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 00:34:46,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 00:34:46,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 00:34:46,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 00:34:46,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 00:34:46,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 00:34:46,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 00:34:46,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 00:34:46,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 00:34:46,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 00:34:46,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 00:34:46,290 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-12 00:34:46,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 00:34:46,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 00:34:46,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 00:34:46,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 00:34:46,614 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-12 00:34:46,615 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-12 00:34:46,616 INFO L432 ainManager$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 [2021-03-12 00:34:46,616 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-8.wvr.bpl' [2021-03-12 00:34:46,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 00:34:46,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-12 00:34:46,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 00:34:46,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 00:34:46,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 00:34:46,677 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 12.03 12:34:46" (1/1) ... [2021-03-12 00:34:46,686 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 12.03 12:34:46" (1/1) ... [2021-03-12 00:34:46,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 00:34:46,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 00:34:46,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 00:34:46,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 00:34:46,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:46" (1/1) ... [2021-03-12 00:34:46,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:46" (1/1) ... [2021-03-12 00:34:46,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:46" (1/1) ... [2021-03-12 00:34:46,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:46" (1/1) ... [2021-03-12 00:34:46,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:46" (1/1) ... [2021-03-12 00:34:46,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:46" (1/1) ... [2021-03-12 00:34:46,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:46" (1/1) ... [2021-03-12 00:34:46,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 00:34:46,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 00:34:46,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 00:34:46,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 00:34:46,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:46" (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 [2021-03-12 00:34:46,784 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-12 00:34:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-12 00:34:46,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-12 00:34:46,786 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-12 00:34:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-12 00:34:46,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-12 00:34:46,787 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-12 00:34:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 00:34:46,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 00:34:46,787 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-12 00:34:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-12 00:34:46,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-12 00:34:46,787 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-12 00:34:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-12 00:34:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-12 00:34:46,788 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-12 00:34:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-12 00:34:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-12 00:34:46,789 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-12 00:34:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-12 00:34:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-12 00:34:46,790 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2021-03-12 00:34:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2021-03-12 00:34:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2021-03-12 00:34:46,790 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration [2021-03-12 00:34:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2021-03-12 00:34:46,791 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2021-03-12 00:34:46,792 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-12 00:34:47,040 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 00:34:47,040 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-12 00:34:47,042 INFO L202 PluginConnector]: Adding new model ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:34:47 BoogieIcfgContainer [2021-03-12 00:34:47,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 00:34:47,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 00:34:47,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 00:34:47,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 00:34:47,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:46" (1/2) ... [2021-03-12 00:34:47,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ac71d7 and model type ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 12:34:47, skipping insertion in model container [2021-03-12 00:34:47,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:34:47" (2/2) ... [2021-03-12 00:34:47,047 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-8.wvr.bpl [2021-03-12 00:34:47,068 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 00:34:47,071 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 00:34:47,071 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 00:34:47,175 INFO L149 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2021-03-12 00:34:47,190 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-03-12 00:34:47,207 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 00:34:47,207 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-12 00:34:47,207 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 00:34:47,208 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 00:34:47,208 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 00:34:47,208 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 00:34:47,208 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 00:34:47,208 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-12 00:34:47,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 70 transitions, 204 flow [2021-03-12 00:34:47,262 INFO L129 PetriNetUnfolder]: 0/62 cut-off events. [2021-03-12 00:34:47,262 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-12 00:34:47,264 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. [2021-03-12 00:34:47,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 70 transitions, 204 flow [2021-03-12 00:34:47,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 60 transitions, 168 flow [2021-03-12 00:34:47,271 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-12 00:34:47,279 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 60 transitions, 168 flow [2021-03-12 00:34:47,282 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 60 transitions, 168 flow [2021-03-12 00:34:47,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 60 transitions, 168 flow [2021-03-12 00:34:47,305 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2021-03-12 00:34:47,305 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-12 00:34:47,306 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. [2021-03-12 00:34:47,308 INFO L116 LiptonReduction]: Number of co-enabled transitions 2044 [2021-03-12 00:34:49,206 INFO L131 LiptonReduction]: Checked pairs total: 3926 [2021-03-12 00:34:49,206 INFO L133 LiptonReduction]: Total number of compositions: 25 [2021-03-12 00:34:49,207 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1939 [2021-03-12 00:34:49,234 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2021-03-12 00:34:49,234 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-12 00:34:49,234 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:34:49,235 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:34:49,235 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]=== [2021-03-12 00:34:49,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:34:49,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1720126984, now seen corresponding path program 1 times [2021-03-12 00:34:49,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:34:49,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542635431] [2021-03-12 00:34:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:34:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:34:49,432 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-03-12 00:34:49,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:34:49,446 INFO L142 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-03-12 00:34:49,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:34:49,452 INFO L142 QuantifierPusher]: treesize reduction 8, result has 42.9 percent of original size [2021-03-12 00:34:49,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:34:49,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:49,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:34:49,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:49,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:49,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:49,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:49,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:49,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:49,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:49,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:49,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:49,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:49,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:49,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:34:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:34:49,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542635431] [2021-03-12 00:34:49,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:34:49,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-12 00:34:49,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887723547] [2021-03-12 00:34:49,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:34:49,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:34:49,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:34:49,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:34:49,505 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 95 [2021-03-12 00:34:49,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 35 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 59.166666666666664) internal successors, (355), 6 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:49,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:34:49,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 95 [2021-03-12 00:34:49,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:34:55,574 INFO L129 PetriNetUnfolder]: 55199/68565 cut-off events. [2021-03-12 00:34:55,574 INFO L130 PetriNetUnfolder]: For 491/491 co-relation queries the response was YES. [2021-03-12 00:34:55,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137148 conditions, 68565 events. 55199/68565 cut-off events. For 491/491 co-relation queries the response was YES. Maximal size of possible extension queue 3255. Compared 354048 event pairs, 28884 based on Foata normal form. 1/68379 useless extension candidates. Maximal degree in co-relation 137106. Up to 34992 conditions per place. [2021-03-12 00:34:56,023 INFO L132 encePairwiseOnDemand]: 76/95 looper letters, 38 selfloop transitions, 17 changer transitions 1/72 dead transitions. [2021-03-12 00:34:56,023 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 304 flow [2021-03-12 00:34:56,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:34:56,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:34:56,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 337 transitions. [2021-03-12 00:34:56,089 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7094736842105264 [2021-03-12 00:34:56,090 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 337 transitions. [2021-03-12 00:34:56,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 337 transitions. [2021-03-12 00:34:56,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:34:56,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 337 transitions. [2021-03-12 00:34:56,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:56,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:56,117 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:56,118 INFO L185 Difference]: Start difference. First operand has 60 places, 35 transitions, 118 flow. Second operand 5 states and 337 transitions. [2021-03-12 00:34:56,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 304 flow [2021-03-12 00:34:56,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 72 transitions, 272 flow, removed 0 selfloop flow, removed 16 redundant places. [2021-03-12 00:34:56,219 INFO L241 Difference]: Finished difference. Result has 51 places, 50 transitions, 210 flow [2021-03-12 00:34:56,220 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2021-03-12 00:34:56,221 INFO L335 CegarLoopForPetriNet]: 60 programPoint places, -9 predicate places. [2021-03-12 00:34:56,221 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 210 flow [2021-03-12 00:34:56,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 59.166666666666664) internal successors, (355), 6 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:56,222 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:34:56,222 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:34:56,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-12 00:34:56,222 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]=== [2021-03-12 00:34:56,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:34:56,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1961890722, now seen corresponding path program 2 times [2021-03-12 00:34:56,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:34:56,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420335684] [2021-03-12 00:34:56,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:34:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:34:56,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:56,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:56,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:56,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:56,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:56,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:56,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:56,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:56,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:56,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:34:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:34:56,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420335684] [2021-03-12 00:34:56,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:34:56,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:34:56,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972565447] [2021-03-12 00:34:56,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:34:56,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:34:56,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:34:56,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:34:56,331 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 95 [2021-03-12 00:34:56,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 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) [2021-03-12 00:34:56,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:34:56,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 95 [2021-03-12 00:34:56,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:35:07,416 INFO L129 PetriNetUnfolder]: 131893/168159 cut-off events. [2021-03-12 00:35:07,417 INFO L130 PetriNetUnfolder]: For 83858/101331 co-relation queries the response was YES. [2021-03-12 00:35:07,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 518424 conditions, 168159 events. 131893/168159 cut-off events. For 83858/101331 co-relation queries the response was YES. Maximal size of possible extension queue 7585. Compared 1041144 event pairs, 28398 based on Foata normal form. 2848/170767 useless extension candidates. Maximal degree in co-relation 514011. Up to 81676 conditions per place. [2021-03-12 00:35:08,493 INFO L132 encePairwiseOnDemand]: 78/95 looper letters, 41 selfloop transitions, 61 changer transitions 0/119 dead transitions. [2021-03-12 00:35:08,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 119 transitions, 716 flow [2021-03-12 00:35:08,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:35:08,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:35:08,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 346 transitions. [2021-03-12 00:35:08,496 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6070175438596491 [2021-03-12 00:35:08,496 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 346 transitions. [2021-03-12 00:35:08,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 346 transitions. [2021-03-12 00:35:08,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:35:08,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 346 transitions. [2021-03-12 00:35:08,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 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) [2021-03-12 00:35:08,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:08,499 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:08,499 INFO L185 Difference]: Start difference. First operand has 51 places, 50 transitions, 210 flow. Second operand 6 states and 346 transitions. [2021-03-12 00:35:08,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 119 transitions, 716 flow [2021-03-12 00:35:08,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 119 transitions, 662 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-12 00:35:08,528 INFO L241 Difference]: Finished difference. Result has 54 places, 102 transitions, 617 flow [2021-03-12 00:35:08,529 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=617, PETRI_PLACES=54, PETRI_TRANSITIONS=102} [2021-03-12 00:35:08,529 INFO L335 CegarLoopForPetriNet]: 60 programPoint places, -6 predicate places. [2021-03-12 00:35:08,529 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 102 transitions, 617 flow [2021-03-12 00:35:08,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 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) [2021-03-12 00:35:08,530 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:35:08,530 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:35:08,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-12 00:35:08,530 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]=== [2021-03-12 00:35:08,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:35:08,531 INFO L82 PathProgramCache]: Analyzing trace with hash 982248910, now seen corresponding path program 3 times [2021-03-12 00:35:08,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:35:08,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913671476] [2021-03-12 00:35:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:35:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:35:08,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:08,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:35:08,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:08,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:08,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:08,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:08,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:08,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:35:08,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:35:08,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913671476] [2021-03-12 00:35:08,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:35:08,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-12 00:35:08,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948547047] [2021-03-12 00:35:08,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:35:08,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:35:08,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:35:08,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:35:08,593 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 95 [2021-03-12 00:35:08,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 102 transitions, 617 flow. Second operand has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:08,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:35:08,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 95 [2021-03-12 00:35:08,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:35:19,258 INFO L129 PetriNetUnfolder]: 133418/167369 cut-off events. [2021-03-12 00:35:19,259 INFO L130 PetriNetUnfolder]: For 157742/203544 co-relation queries the response was YES. [2021-03-12 00:35:19,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 706898 conditions, 167369 events. 133418/167369 cut-off events. For 157742/203544 co-relation queries the response was YES. Maximal size of possible extension queue 7553. Compared 956177 event pairs, 27287 based on Foata normal form. 311/167447 useless extension candidates. Maximal degree in co-relation 705086. Up to 162332 conditions per place. [2021-03-12 00:35:20,533 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 99 selfloop transitions, 66 changer transitions 0/182 dead transitions. [2021-03-12 00:35:20,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 182 transitions, 1486 flow [2021-03-12 00:35:20,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:35:20,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:35:20,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 282 transitions. [2021-03-12 00:35:20,535 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5936842105263158 [2021-03-12 00:35:20,535 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 282 transitions. [2021-03-12 00:35:20,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 282 transitions. [2021-03-12 00:35:20,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:35:20,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 282 transitions. [2021-03-12 00:35:20,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:20,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:20,537 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:20,537 INFO L185 Difference]: Start difference. First operand has 54 places, 102 transitions, 617 flow. Second operand 5 states and 282 transitions. [2021-03-12 00:35:20,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 182 transitions, 1486 flow [2021-03-12 00:35:20,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 182 transitions, 1445 flow, removed 16 selfloop flow, removed 1 redundant places. [2021-03-12 00:35:20,655 INFO L241 Difference]: Finished difference. Result has 59 places, 159 transitions, 1265 flow [2021-03-12 00:35:20,655 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1265, PETRI_PLACES=59, PETRI_TRANSITIONS=159} [2021-03-12 00:35:20,656 INFO L335 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2021-03-12 00:35:20,656 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 159 transitions, 1265 flow [2021-03-12 00:35:20,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:20,656 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:35:20,656 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:35:20,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-12 00:35:20,656 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]=== [2021-03-12 00:35:20,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:35:20,657 INFO L82 PathProgramCache]: Analyzing trace with hash 2069042304, now seen corresponding path program 4 times [2021-03-12 00:35:20,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:35:20,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307915160] [2021-03-12 00:35:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:35:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:35:20,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:20,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:35:20,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:20,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:20,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:20,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:20,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:20,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:20,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:20,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:20,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:20,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:20,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:20,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:20,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:20,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:20,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:20,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:20,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:20,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:35:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:35:20,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307915160] [2021-03-12 00:35:20,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:35:20,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-12 00:35:20,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116566232] [2021-03-12 00:35:20,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:35:20,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:35:20,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:35:20,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:35:20,729 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 95 [2021-03-12 00:35:20,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 159 transitions, 1265 flow. Second operand has 9 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:20,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:35:20,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 95 [2021-03-12 00:35:20,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:35:39,846 INFO L129 PetriNetUnfolder]: 190916/242074 cut-off events. [2021-03-12 00:35:39,846 INFO L130 PetriNetUnfolder]: For 376619/407809 co-relation queries the response was YES. [2021-03-12 00:35:40,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1045667 conditions, 242074 events. 190916/242074 cut-off events. For 376619/407809 co-relation queries the response was YES. Maximal size of possible extension queue 11263. Compared 1488424 event pairs, 25646 based on Foata normal form. 542/242369 useless extension candidates. Maximal degree in co-relation 1042120. Up to 125153 conditions per place. [2021-03-12 00:35:41,487 INFO L132 encePairwiseOnDemand]: 78/95 looper letters, 47 selfloop transitions, 551 changer transitions 0/615 dead transitions. [2021-03-12 00:35:41,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 615 transitions, 6178 flow [2021-03-12 00:35:41,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 00:35:41,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-12 00:35:41,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 532 transitions. [2021-03-12 00:35:41,490 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2021-03-12 00:35:41,490 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 532 transitions. [2021-03-12 00:35:41,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 532 transitions. [2021-03-12 00:35:41,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:35:41,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 532 transitions. [2021-03-12 00:35:41,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 59.111111111111114) internal successors, (532), 9 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:41,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 95.0) internal successors, (950), 10 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:41,494 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 95.0) internal successors, (950), 10 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:41,494 INFO L185 Difference]: Start difference. First operand has 59 places, 159 transitions, 1265 flow. Second operand 9 states and 532 transitions. [2021-03-12 00:35:41,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 615 transitions, 6178 flow [2021-03-12 00:35:45,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 615 transitions, 6169 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-12 00:35:45,257 INFO L241 Difference]: Finished difference. Result has 66 places, 609 transitions, 6131 flow [2021-03-12 00:35:45,257 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6131, PETRI_PLACES=66, PETRI_TRANSITIONS=609} [2021-03-12 00:35:45,258 INFO L335 CegarLoopForPetriNet]: 60 programPoint places, 6 predicate places. [2021-03-12 00:35:45,258 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 609 transitions, 6131 flow [2021-03-12 00:35:45,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:45,258 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:35:45,258 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:35:45,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-12 00:35:45,258 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]=== [2021-03-12 00:35:45,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:35:45,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1545574308, now seen corresponding path program 5 times [2021-03-12 00:35:45,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:35:45,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347033600] [2021-03-12 00:35:45,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:35:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:35:45,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:45,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:35:45,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:45,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:45,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:45,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:45,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:45,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:45,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:45,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:45,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:45,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:45,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:45,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:45,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:45,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:45,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:45,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:35:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:35:45,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347033600] [2021-03-12 00:35:45,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:35:45,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:35:45,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789136644] [2021-03-12 00:35:45,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-12 00:35:45,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:35:45,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-12 00:35:45,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-12 00:35:45,335 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 95 [2021-03-12 00:35:45,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 609 transitions, 6131 flow. Second operand has 8 states, 8 states have (on average 47.25) internal successors, (378), 8 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:45,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:35:45,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 95 [2021-03-12 00:35:45,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:36:16,824 INFO L129 PetriNetUnfolder]: 227389/290579 cut-off events. [2021-03-12 00:36:16,824 INFO L130 PetriNetUnfolder]: For 514436/645624 co-relation queries the response was YES. [2021-03-12 00:36:17,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1514654 conditions, 290579 events. 227389/290579 cut-off events. For 514436/645624 co-relation queries the response was YES. Maximal size of possible extension queue 14153. Compared 1849544 event pairs, 24877 based on Foata normal form. 1864/292202 useless extension candidates. Maximal degree in co-relation 1509780. Up to 152332 conditions per place. [2021-03-12 00:36:19,179 INFO L132 encePairwiseOnDemand]: 78/95 looper letters, 148 selfloop transitions, 681 changer transitions 0/846 dead transitions. [2021-03-12 00:36:19,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 846 transitions, 9919 flow [2021-03-12 00:36:19,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-12 00:36:19,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-12 00:36:19,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 470 transitions. [2021-03-12 00:36:19,181 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2021-03-12 00:36:19,181 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 470 transitions. [2021-03-12 00:36:19,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 470 transitions. [2021-03-12 00:36:19,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:36:19,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 470 transitions. [2021-03-12 00:36:19,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.75) internal successors, (470), 8 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:19,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:19,184 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:19,184 INFO L185 Difference]: Start difference. First operand has 66 places, 609 transitions, 6131 flow. Second operand 8 states and 470 transitions. [2021-03-12 00:36:19,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 846 transitions, 9919 flow [2021-03-12 00:36:26,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 846 transitions, 9567 flow, removed 167 selfloop flow, removed 2 redundant places. [2021-03-12 00:36:26,771 INFO L241 Difference]: Finished difference. Result has 73 places, 832 transitions, 10051 flow [2021-03-12 00:36:26,771 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=5907, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10051, PETRI_PLACES=73, PETRI_TRANSITIONS=832} [2021-03-12 00:36:26,771 INFO L335 CegarLoopForPetriNet]: 60 programPoint places, 13 predicate places. [2021-03-12 00:36:26,771 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 832 transitions, 10051 flow [2021-03-12 00:36:26,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 47.25) internal successors, (378), 8 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:26,772 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:36:26,772 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:36:26,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-12 00:36:26,772 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]=== [2021-03-12 00:36:26,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:36:26,773 INFO L82 PathProgramCache]: Analyzing trace with hash 703960148, now seen corresponding path program 6 times [2021-03-12 00:36:26,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:36:26,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590620127] [2021-03-12 00:36:26,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:36:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:36:26,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:26,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:36:26,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:26,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:26,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:26,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:26,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:26,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:36:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:36:26,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590620127] [2021-03-12 00:36:26,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:36:26,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-12 00:36:26,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455248464] [2021-03-12 00:36:26,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:36:26,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:36:26,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:36:26,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:36:26,813 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 95 [2021-03-12 00:36:26,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 832 transitions, 10051 flow. Second operand has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:26,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:36:26,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 95 [2021-03-12 00:36:26,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:37:02,932 INFO L129 PetriNetUnfolder]: 228626/291702 cut-off events. [2021-03-12 00:37:02,932 INFO L130 PetriNetUnfolder]: For 613895/782610 co-relation queries the response was YES. [2021-03-12 00:37:03,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1691899 conditions, 291702 events. 228626/291702 cut-off events. For 613895/782610 co-relation queries the response was YES. Maximal size of possible extension queue 14139. Compared 1848061 event pairs, 37747 based on Foata normal form. 666/292085 useless extension candidates. Maximal degree in co-relation 1687433. Up to 282015 conditions per place. [2021-03-12 00:37:05,248 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 631 selfloop transitions, 364 changer transitions 0/1012 dead transitions. [2021-03-12 00:37:05,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 1012 transitions, 14156 flow [2021-03-12 00:37:05,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:37:05,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:37:05,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 282 transitions. [2021-03-12 00:37:05,249 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5936842105263158 [2021-03-12 00:37:05,249 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 282 transitions. [2021-03-12 00:37:05,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 282 transitions. [2021-03-12 00:37:05,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:37:05,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 282 transitions. [2021-03-12 00:37:05,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:05,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:05,251 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:05,251 INFO L185 Difference]: Start difference. First operand has 73 places, 832 transitions, 10051 flow. Second operand 5 states and 282 transitions. [2021-03-12 00:37:05,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 1012 transitions, 14156 flow