/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 08:02:14,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 08:02:14,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 08:02:14,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 08:02:14,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 08:02:14,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 08:02:14,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 08:02:14,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 08:02:14,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 08:02:14,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 08:02:14,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 08:02:14,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 08:02:14,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 08:02:14,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 08:02:14,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 08:02:14,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 08:02:14,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 08:02:14,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 08:02:14,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 08:02:14,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 08:02:14,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 08:02:14,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 08:02:14,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 08:02:14,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 08:02:14,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 08:02:14,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 08:02:14,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 08:02:14,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 08:02:14,360 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl.epf [2021-08-13 08:02:14,401 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 08:02:14,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 08:02:14,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 08:02:14,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 08:02:14,405 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 08:02:14,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 08:02:14,405 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 08:02:14,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 08:02:14,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 08:02:14,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 08:02:14,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 08:02:14,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 08:02:14,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 08:02:14,407 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 08:02:14,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 08:02:14,407 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 08:02:14,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 08:02:14,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 08:02:14,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 08:02:14,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 08:02:14,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 08:02:14,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 08:02:14,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 08:02:14,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 08:02:14,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 08:02:14,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 08:02:14,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 08:02:14,408 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 08:02:14,408 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 08:02:14,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 08:02:14,409 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 08:02:14,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 08:02:14,409 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 08:02:14,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 08:02:14,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 08:02:14,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 08:02:14,916 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 08:02:14,918 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 08:02:14,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl [2021-08-13 08:02:14,919 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl' [2021-08-13 08:02:14,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 08:02:14,942 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 08:02:14,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 08:02:14,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 08:02:14,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 08:02:14,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:02:14" (1/1) ... [2021-08-13 08:02:14,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:02:14" (1/1) ... [2021-08-13 08:02:14,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 08:02:14,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 08:02:14,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 08:02:14,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 08:02:14,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:02:14" (1/1) ... [2021-08-13 08:02:14,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:02:14" (1/1) ... [2021-08-13 08:02:14,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:02:14" (1/1) ... [2021-08-13 08:02:14,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:02:14" (1/1) ... [2021-08-13 08:02:14,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:02:14" (1/1) ... [2021-08-13 08:02:14,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:02:14" (1/1) ... [2021-08-13 08:02:14,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:02:14" (1/1) ... [2021-08-13 08:02:14,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 08:02:14,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 08:02:14,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 08:02:14,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 08:02:14,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:02:14" (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 [2021-08-13 08:02:15,056 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-13 08:02:15,056 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-13 08:02:15,056 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-13 08:02:15,056 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-13 08:02:15,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-13 08:02:15,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-13 08:02:15,057 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 08:02:15,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 08:02:15,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 08:02:15,057 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-13 08:02:15,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-13 08:02:15,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-13 08:02:15,058 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-13 08:02:15,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-13 08:02:15,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-13 08:02:15,059 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 08:02:15,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 08:02:15,200 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 08:02:15,201 INFO L202 PluginConnector]: Adding new model exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 08:02:15 BoogieIcfgContainer [2021-08-13 08:02:15,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 08:02:15,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 08:02:15,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 08:02:15,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 08:02:15,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:02:14" (1/2) ... [2021-08-13 08:02:15,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0ed029 and model type exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 08:02:15, skipping insertion in model container [2021-08-13 08:02:15,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 08:02:15" (2/2) ... [2021-08-13 08:02:15,207 INFO L111 eAbstractionObserver]: Analyzing ICFG exp2x6.wvr.bpl [2021-08-13 08:02:15,211 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 08:02:15,212 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 08:02:15,212 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 08:02:15,250 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-13 08:02:15,268 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-13 08:02:15,285 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 08:02:15,285 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 08:02:15,286 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 08:02:15,286 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 08:02:15,286 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 08:02:15,286 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 08:02:15,286 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 08:02:15,286 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 08:02:15,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 45 transitions, 122 flow [2021-08-13 08:02:15,320 INFO L129 PetriNetUnfolder]: 4/41 cut-off events. [2021-08-13 08:02:15,320 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-13 08:02:15,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 41 events. 4/41 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 100 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2021-08-13 08:02:15,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 45 transitions, 122 flow [2021-08-13 08:02:15,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 39 transitions, 102 flow [2021-08-13 08:02:15,344 INFO L129 PetriNetUnfolder]: 4/38 cut-off events. [2021-08-13 08:02:15,344 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-13 08:02:15,345 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:02:15,345 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:02:15,346 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:02:15,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:02:15,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1191194427, now seen corresponding path program 1 times [2021-08-13 08:02:15,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:02:15,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522325006] [2021-08-13 08:02:15,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:02:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:02:15,504 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 08:02:15,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:02:15,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:15,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:15,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:02:15,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:02:15,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522325006] [2021-08-13 08:02:15,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522325006] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:02:15,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:02:15,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 08:02:15,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075086934] [2021-08-13 08:02:15,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 08:02:15,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:02:15,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 08:02:15,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 08:02:15,561 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 08:02:15,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:15,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:02:15,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 08:02:15,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:02:15,901 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [18#L29true, 51#true, 53#true, 55#true, 57#true, 26#L18true, 58#true, 45#L66true, 15#L40true, 47#thread4FINALtrue]) [2021-08-13 08:02:15,902 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-08-13 08:02:15,902 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 08:02:15,902 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 08:02:15,902 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 08:02:15,902 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [18#L29true, 51#true, 53#true, 55#true, 57#true, 26#L18true, 58#true, 45#L66true, 15#L40true, 31#L52true]) [2021-08-13 08:02:15,902 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-08-13 08:02:15,902 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 08:02:15,902 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 08:02:15,902 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 08:02:15,958 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [18#L29true, 51#true, 53#true, 55#true, 57#true, 58#true, 10#L19true, 45#L66true, 47#thread4FINALtrue, 15#L40true]) [2021-08-13 08:02:15,958 INFO L384 tUnfolder$Statistics]: this new event has 12 ancestors and is cut-off event [2021-08-13 08:02:15,958 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 08:02:15,958 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 08:02:15,958 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 08:02:15,958 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [18#L29true, 51#true, 53#true, 55#true, 57#true, 58#true, 10#L19true, 45#L66true, 31#L52true, 15#L40true]) [2021-08-13 08:02:15,959 INFO L384 tUnfolder$Statistics]: this new event has 12 ancestors and is cut-off event [2021-08-13 08:02:15,959 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 08:02:15,959 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 08:02:15,959 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 08:02:15,966 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [18#L29true, 51#true, 53#true, 55#true, 57#true, 9#thread1FINALtrue, 58#true, 45#L66true, 47#thread4FINALtrue, 15#L40true]) [2021-08-13 08:02:15,966 INFO L384 tUnfolder$Statistics]: this new event has 12 ancestors and is cut-off event [2021-08-13 08:02:15,966 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 08:02:15,967 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 08:02:15,967 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 08:02:15,967 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [18#L29true, 51#true, 53#true, 55#true, 57#true, 9#thread1FINALtrue, 58#true, 45#L66true, 31#L52true, 15#L40true]) [2021-08-13 08:02:15,967 INFO L384 tUnfolder$Statistics]: this new event has 12 ancestors and is cut-off event [2021-08-13 08:02:15,967 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 08:02:15,967 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 08:02:15,967 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 08:02:16,047 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [18#L29true, 51#true, 36#L20true, 53#true, 55#true, 57#true, 58#true, 45#L66true, 47#thread4FINALtrue, 15#L40true]) [2021-08-13 08:02:16,048 INFO L384 tUnfolder$Statistics]: this new event has 13 ancestors and is cut-off event [2021-08-13 08:02:16,048 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-08-13 08:02:16,048 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 08:02:16,048 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-08-13 08:02:16,048 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [18#L29true, 51#true, 36#L20true, 53#true, 55#true, 57#true, 58#true, 45#L66true, 31#L52true, 15#L40true]) [2021-08-13 08:02:16,048 INFO L384 tUnfolder$Statistics]: this new event has 13 ancestors and is cut-off event [2021-08-13 08:02:16,049 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-08-13 08:02:16,049 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-08-13 08:02:16,049 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 08:02:16,185 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [18#L29true, 51#true, 53#true, 55#true, 57#true, 41#L21true, 58#true, 45#L66true, 47#thread4FINALtrue, 15#L40true]) [2021-08-13 08:02:16,185 INFO L384 tUnfolder$Statistics]: this new event has 14 ancestors and is cut-off event [2021-08-13 08:02:16,185 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-08-13 08:02:16,185 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-08-13 08:02:16,186 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-08-13 08:02:16,186 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [18#L29true, 51#true, 53#true, 55#true, 57#true, 41#L21true, 58#true, 45#L66true, 31#L52true, 15#L40true]) [2021-08-13 08:02:16,186 INFO L384 tUnfolder$Statistics]: this new event has 14 ancestors and is cut-off event [2021-08-13 08:02:16,186 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-08-13 08:02:16,186 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-08-13 08:02:16,186 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-08-13 08:02:16,346 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [17#L22true, 18#L29true, 51#true, 53#true, 55#true, 57#true, 58#true, 45#L66true, 47#thread4FINALtrue, 15#L40true]) [2021-08-13 08:02:16,347 INFO L384 tUnfolder$Statistics]: this new event has 15 ancestors and is cut-off event [2021-08-13 08:02:16,347 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-08-13 08:02:16,347 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-08-13 08:02:16,347 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-08-13 08:02:16,347 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [17#L22true, 18#L29true, 51#true, 53#true, 55#true, 57#true, 58#true, 45#L66true, 31#L52true, 15#L40true]) [2021-08-13 08:02:16,347 INFO L384 tUnfolder$Statistics]: this new event has 15 ancestors and is cut-off event [2021-08-13 08:02:16,347 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-08-13 08:02:16,347 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-08-13 08:02:16,347 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-08-13 08:02:16,505 INFO L129 PetriNetUnfolder]: 5212/7020 cut-off events. [2021-08-13 08:02:16,505 INFO L130 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2021-08-13 08:02:16,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13938 conditions, 7020 events. 5212/7020 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 32472 event pairs, 1884 based on Foata normal form. 1/5609 useless extension candidates. Maximal degree in co-relation 13911. Up to 6632 conditions per place. [2021-08-13 08:02:16,572 INFO L132 encePairwiseOnDemand]: 39/45 looper letters, 33 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2021-08-13 08:02:16,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 51 transitions, 202 flow [2021-08-13 08:02:16,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 08:02:16,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 08:02:16,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2021-08-13 08:02:16,584 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2021-08-13 08:02:16,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2021-08-13 08:02:16,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2021-08-13 08:02:16,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:02:16,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2021-08-13 08:02:16,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:16,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:16,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:16,664 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2021-08-13 08:02:16,664 INFO L482 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 202 flow [2021-08-13 08:02:16,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:16,664 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:02:16,665 INFO L266 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] [2021-08-13 08:02:16,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 08:02:16,666 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:02:16,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:02:16,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1608113992, now seen corresponding path program 1 times [2021-08-13 08:02:16,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:02:16,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852700602] [2021-08-13 08:02:16,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:02:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:02:16,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:16,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:16,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:16,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:16,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:16,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:02:16,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:02:16,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852700602] [2021-08-13 08:02:16,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852700602] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:02:16,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:02:16,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 08:02:16,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096011344] [2021-08-13 08:02:16,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 08:02:16,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:02:16,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 08:02:16,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 08:02:16,713 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 08:02:16,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:16,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:02:16,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 08:02:16,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:02:17,780 INFO L129 PetriNetUnfolder]: 7703/10664 cut-off events. [2021-08-13 08:02:17,781 INFO L130 PetriNetUnfolder]: For 3317/3447 co-relation queries the response was YES. [2021-08-13 08:02:17,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28241 conditions, 10664 events. 7703/10664 cut-off events. For 3317/3447 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 55250 event pairs, 2425 based on Foata normal form. 4/8566 useless extension candidates. Maximal degree in co-relation 28199. Up to 10023 conditions per place. [2021-08-13 08:02:17,940 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 53 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2021-08-13 08:02:17,941 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 480 flow [2021-08-13 08:02:17,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:02:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:02:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2021-08-13 08:02:17,946 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-08-13 08:02:17,946 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 180 transitions. [2021-08-13 08:02:17,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 180 transitions. [2021-08-13 08:02:17,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:02:17,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 180 transitions. [2021-08-13 08:02:17,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:17,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:17,951 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:17,952 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 6 predicate places. [2021-08-13 08:02:17,952 INFO L482 AbstractCegarLoop]: Abstraction has has 54 places, 88 transitions, 480 flow [2021-08-13 08:02:17,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:17,952 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:02:17,952 INFO L266 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] [2021-08-13 08:02:17,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 08:02:17,953 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:02:17,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:02:17,956 INFO L82 PathProgramCache]: Analyzing trace with hash 375731404, now seen corresponding path program 2 times [2021-08-13 08:02:17,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:02:17,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988060673] [2021-08-13 08:02:17,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:02:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:02:17,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:18,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:18,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:18,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:18,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:18,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:18,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:02:18,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:02:18,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988060673] [2021-08-13 08:02:18,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988060673] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:02:18,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:02:18,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 08:02:18,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307697641] [2021-08-13 08:02:18,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 08:02:18,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:02:18,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 08:02:18,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 08:02:18,014 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 08:02:18,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 88 transitions, 480 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:18,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:02:18,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 08:02:18,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:02:18,639 INFO L129 PetriNetUnfolder]: 7075/9753 cut-off events. [2021-08-13 08:02:18,639 INFO L130 PetriNetUnfolder]: For 9262/9538 co-relation queries the response was YES. [2021-08-13 08:02:18,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32475 conditions, 9753 events. 7075/9753 cut-off events. For 9262/9538 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 49166 event pairs, 2164 based on Foata normal form. 13/7892 useless extension candidates. Maximal degree in co-relation 32435. Up to 9148 conditions per place. [2021-08-13 08:02:18,701 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 90 selfloop transitions, 18 changer transitions 0/131 dead transitions. [2021-08-13 08:02:18,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 131 transitions, 954 flow [2021-08-13 08:02:18,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:02:18,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:02:18,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2021-08-13 08:02:18,703 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2021-08-13 08:02:18,703 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 178 transitions. [2021-08-13 08:02:18,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 178 transitions. [2021-08-13 08:02:18,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:02:18,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 178 transitions. [2021-08-13 08:02:18,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:18,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:18,705 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:18,705 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2021-08-13 08:02:18,705 INFO L482 AbstractCegarLoop]: Abstraction has has 58 places, 131 transitions, 954 flow [2021-08-13 08:02:18,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:18,705 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:02:18,705 INFO L266 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] [2021-08-13 08:02:18,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 08:02:18,706 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:02:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:02:18,706 INFO L82 PathProgramCache]: Analyzing trace with hash 815941149, now seen corresponding path program 1 times [2021-08-13 08:02:18,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:02:18,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99695819] [2021-08-13 08:02:18,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:02:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:02:18,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:18,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:18,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:18,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:18,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:18,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:02:18,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:02:18,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99695819] [2021-08-13 08:02:18,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99695819] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:02:18,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:02:18,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 08:02:18,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537077086] [2021-08-13 08:02:18,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 08:02:18,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:02:18,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 08:02:18,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 08:02:18,729 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 08:02:18,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 131 transitions, 954 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:18,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:02:18,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 08:02:18,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:02:19,364 INFO L129 PetriNetUnfolder]: 7208/9938 cut-off events. [2021-08-13 08:02:19,364 INFO L130 PetriNetUnfolder]: For 18981/19887 co-relation queries the response was YES. [2021-08-13 08:02:19,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39852 conditions, 9938 events. 7208/9938 cut-off events. For 18981/19887 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 50342 event pairs, 1980 based on Foata normal form. 32/8105 useless extension candidates. Maximal degree in co-relation 39808. Up to 9375 conditions per place. [2021-08-13 08:02:19,483 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 113 selfloop transitions, 17 changer transitions 0/153 dead transitions. [2021-08-13 08:02:19,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 153 transitions, 1390 flow [2021-08-13 08:02:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:02:19,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:02:19,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2021-08-13 08:02:19,484 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2021-08-13 08:02:19,484 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 178 transitions. [2021-08-13 08:02:19,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 178 transitions. [2021-08-13 08:02:19,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:02:19,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 178 transitions. [2021-08-13 08:02:19,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:19,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:19,485 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:19,486 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 14 predicate places. [2021-08-13 08:02:19,486 INFO L482 AbstractCegarLoop]: Abstraction has has 62 places, 153 transitions, 1390 flow [2021-08-13 08:02:19,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:19,486 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:02:19,486 INFO L266 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] [2021-08-13 08:02:19,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 08:02:19,486 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:02:19,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:02:19,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1360935607, now seen corresponding path program 1 times [2021-08-13 08:02:19,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:02:19,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958988006] [2021-08-13 08:02:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:02:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:02:19,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:19,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:19,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:19,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:19,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:19,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:02:19,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:02:19,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958988006] [2021-08-13 08:02:19,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958988006] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:02:19,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:02:19,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 08:02:19,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824932092] [2021-08-13 08:02:19,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 08:02:19,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:02:19,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 08:02:19,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 08:02:19,508 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 08:02:19,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 153 transitions, 1390 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:19,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:02:19,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 08:02:19,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:02:20,295 INFO L129 PetriNetUnfolder]: 8134/11286 cut-off events. [2021-08-13 08:02:20,295 INFO L130 PetriNetUnfolder]: For 22731/23785 co-relation queries the response was YES. [2021-08-13 08:02:20,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53312 conditions, 11286 events. 8134/11286 cut-off events. For 22731/23785 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 60053 event pairs, 1365 based on Foata normal form. 20/9208 useless extension candidates. Maximal degree in co-relation 53255. Up to 10679 conditions per place. [2021-08-13 08:02:20,399 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 223 selfloop transitions, 61 changer transitions 2/328 dead transitions. [2021-08-13 08:02:20,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 328 transitions, 3652 flow [2021-08-13 08:02:20,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:02:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:02:20,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2021-08-13 08:02:20,401 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7955555555555556 [2021-08-13 08:02:20,401 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 179 transitions. [2021-08-13 08:02:20,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 179 transitions. [2021-08-13 08:02:20,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:02:20,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 179 transitions. [2021-08-13 08:02:20,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:20,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:20,402 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:20,403 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2021-08-13 08:02:20,403 INFO L482 AbstractCegarLoop]: Abstraction has has 66 places, 328 transitions, 3652 flow [2021-08-13 08:02:20,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:20,403 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:02:20,403 INFO L266 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] [2021-08-13 08:02:20,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 08:02:20,403 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:02:20,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:02:20,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2135301104, now seen corresponding path program 1 times [2021-08-13 08:02:20,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:02:20,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756062221] [2021-08-13 08:02:20,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:02:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:02:20,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:02:20,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:02:20,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756062221] [2021-08-13 08:02:20,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756062221] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 08:02:20,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112631218] [2021-08-13 08:02:20,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-13 08:02:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:02:20,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-13 08:02:20,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-13 08:02:20,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:02:20,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 08:02:20,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:02:20,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-13 08:02:20,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:20,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:20,551 INFO L142 QuantifierPusher]: treesize reduction 9, result has 10.0 percent of original size [2021-08-13 08:02:20,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:20,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:20,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:02:20,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112631218] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 08:02:20,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-13 08:02:20,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-13 08:02:20,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582839654] [2021-08-13 08:02:20,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 08:02:20,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:02:20,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 08:02:20,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 08:02:20,637 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 08:02:20,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 328 transitions, 3652 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:20,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:02:20,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 08:02:20,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:02:21,949 INFO L129 PetriNetUnfolder]: 8557/12458 cut-off events. [2021-08-13 08:02:21,949 INFO L130 PetriNetUnfolder]: For 23056/24809 co-relation queries the response was YES. [2021-08-13 08:02:21,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65416 conditions, 12458 events. 8557/12458 cut-off events. For 23056/24809 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 71872 event pairs, 1428 based on Foata normal form. 31/10583 useless extension candidates. Maximal degree in co-relation 65334. Up to 11528 conditions per place. [2021-08-13 08:02:22,092 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 482 selfloop transitions, 89 changer transitions 3/616 dead transitions. [2021-08-13 08:02:22,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 616 transitions, 8196 flow [2021-08-13 08:02:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:02:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:02:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2021-08-13 08:02:22,093 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-08-13 08:02:22,093 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 180 transitions. [2021-08-13 08:02:22,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 180 transitions. [2021-08-13 08:02:22,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:02:22,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 180 transitions. [2021-08-13 08:02:22,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:22,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:22,094 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:22,094 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 22 predicate places. [2021-08-13 08:02:22,095 INFO L482 AbstractCegarLoop]: Abstraction has has 70 places, 616 transitions, 8196 flow [2021-08-13 08:02:22,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:22,095 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:02:22,095 INFO L266 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] [2021-08-13 08:02:22,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-13 08:02:22,316 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:02:22,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:02:22,316 INFO L82 PathProgramCache]: Analyzing trace with hash -875771450, now seen corresponding path program 2 times [2021-08-13 08:02:22,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:02:22,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669223251] [2021-08-13 08:02:22,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:02:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:02:22,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:22,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:22,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:22,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:22,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:22,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:02:22,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:02:22,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669223251] [2021-08-13 08:02:22,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669223251] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:02:22,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:02:22,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 08:02:22,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110527281] [2021-08-13 08:02:22,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 08:02:22,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:02:22,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 08:02:22,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 08:02:22,357 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 08:02:22,357 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 616 transitions, 8196 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:22,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:02:22,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 08:02:22,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:02:24,407 INFO L129 PetriNetUnfolder]: 7898/11522 cut-off events. [2021-08-13 08:02:24,408 INFO L130 PetriNetUnfolder]: For 21760/24940 co-relation queries the response was YES. [2021-08-13 08:02:24,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67512 conditions, 11522 events. 7898/11522 cut-off events. For 21760/24940 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 66185 event pairs, 999 based on Foata normal form. 47/9866 useless extension candidates. Maximal degree in co-relation 67445. Up to 10566 conditions per place. [2021-08-13 08:02:24,568 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 460 selfloop transitions, 111 changer transitions 8/621 dead transitions. [2021-08-13 08:02:24,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 621 transitions, 9430 flow [2021-08-13 08:02:24,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:02:24,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:02:24,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2021-08-13 08:02:24,570 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7866666666666666 [2021-08-13 08:02:24,570 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 177 transitions. [2021-08-13 08:02:24,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 177 transitions. [2021-08-13 08:02:24,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:02:24,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 177 transitions. [2021-08-13 08:02:24,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:24,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:24,571 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:24,572 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2021-08-13 08:02:24,572 INFO L482 AbstractCegarLoop]: Abstraction has has 74 places, 621 transitions, 9430 flow [2021-08-13 08:02:24,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:24,573 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:02:24,573 INFO L266 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] [2021-08-13 08:02:24,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 08:02:24,573 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:02:24,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:02:24,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1538529383, now seen corresponding path program 2 times [2021-08-13 08:02:24,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:02:24,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459820173] [2021-08-13 08:02:24,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:02:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:02:24,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:24,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:24,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:24,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:24,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:24,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:02:24,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:02:24,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459820173] [2021-08-13 08:02:24,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459820173] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:02:24,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:02:24,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 08:02:24,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267476901] [2021-08-13 08:02:24,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 08:02:24,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:02:24,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 08:02:24,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 08:02:24,665 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 08:02:24,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 621 transitions, 9430 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:24,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:02:24,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 08:02:24,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:02:26,488 INFO L129 PetriNetUnfolder]: 8769/12632 cut-off events. [2021-08-13 08:02:26,488 INFO L130 PetriNetUnfolder]: For 29271/31838 co-relation queries the response was YES. [2021-08-13 08:02:26,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83572 conditions, 12632 events. 8769/12632 cut-off events. For 29271/31838 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 69838 event pairs, 1044 based on Foata normal form. 6/10839 useless extension candidates. Maximal degree in co-relation 83500. Up to 11772 conditions per place. [2021-08-13 08:02:26,614 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 614 selfloop transitions, 88 changer transitions 8/752 dead transitions. [2021-08-13 08:02:26,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 752 transitions, 12928 flow [2021-08-13 08:02:26,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:02:26,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:02:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2021-08-13 08:02:26,615 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2021-08-13 08:02:26,615 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 178 transitions. [2021-08-13 08:02:26,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 178 transitions. [2021-08-13 08:02:26,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:02:26,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 178 transitions. [2021-08-13 08:02:26,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:26,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:26,617 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:26,617 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 30 predicate places. [2021-08-13 08:02:26,617 INFO L482 AbstractCegarLoop]: Abstraction has has 78 places, 752 transitions, 12928 flow [2021-08-13 08:02:26,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:26,617 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:02:26,617 INFO L266 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] [2021-08-13 08:02:26,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 08:02:26,618 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:02:26,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:02:26,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1585811695, now seen corresponding path program 2 times [2021-08-13 08:02:26,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:02:26,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671515936] [2021-08-13 08:02:26,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:02:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:02:26,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:26,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:02:26,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:26,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:02:26,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:26,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:02:26,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:02:26,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671515936] [2021-08-13 08:02:26,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671515936] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:02:26,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:02:26,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 08:02:26,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594185676] [2021-08-13 08:02:26,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 08:02:26,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:02:26,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 08:02:26,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 08:02:26,651 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 08:02:26,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 752 transitions, 12928 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:26,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:02:26,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 08:02:26,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:02:28,939 INFO L129 PetriNetUnfolder]: 9736/14036 cut-off events. [2021-08-13 08:02:28,940 INFO L130 PetriNetUnfolder]: For 51822/55308 co-relation queries the response was YES. [2021-08-13 08:02:28,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102926 conditions, 14036 events. 9736/14036 cut-off events. For 51822/55308 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 78669 event pairs, 1172 based on Foata normal form. 51/12192 useless extension candidates. Maximal degree in co-relation 102849. Up to 13108 conditions per place. [2021-08-13 08:02:29,074 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 754 selfloop transitions, 106 changer transitions 8/913 dead transitions. [2021-08-13 08:02:29,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 913 transitions, 17538 flow [2021-08-13 08:02:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:02:29,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:02:29,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2021-08-13 08:02:29,075 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2021-08-13 08:02:29,075 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 178 transitions. [2021-08-13 08:02:29,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 178 transitions. [2021-08-13 08:02:29,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:02:29,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 178 transitions. [2021-08-13 08:02:29,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:29,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:29,077 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:29,077 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 34 predicate places. [2021-08-13 08:02:29,077 INFO L482 AbstractCegarLoop]: Abstraction has has 82 places, 913 transitions, 17538 flow [2021-08-13 08:02:29,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:29,077 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:02:29,077 INFO L266 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] [2021-08-13 08:02:29,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 08:02:29,078 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:02:29,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:02:29,078 INFO L82 PathProgramCache]: Analyzing trace with hash -466782790, now seen corresponding path program 1 times [2021-08-13 08:02:29,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:02:29,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599487576] [2021-08-13 08:02:29,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:02:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:02:29,131 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 08:02:29,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:02:29,142 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:29,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:29,157 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:29,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:29,168 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:29,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:29,185 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:29,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:29,200 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:29,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:29,204 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:29,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:29,207 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:29,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:29,215 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 08:02:29,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:02:29,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:29,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:29,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 08:02:29,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:02:29,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599487576] [2021-08-13 08:02:29,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599487576] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:02:29,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:02:29,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 08:02:29,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830518622] [2021-08-13 08:02:29,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 08:02:29,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:02:29,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 08:02:29,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 08:02:29,224 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 08:02:29,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 913 transitions, 17538 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:29,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:02:29,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 08:02:29,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:02:32,516 INFO L129 PetriNetUnfolder]: 10822/16116 cut-off events. [2021-08-13 08:02:32,516 INFO L130 PetriNetUnfolder]: For 49382/50409 co-relation queries the response was YES. [2021-08-13 08:02:32,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130527 conditions, 16116 events. 10822/16116 cut-off events. For 49382/50409 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 98791 event pairs, 892 based on Foata normal form. 29/14000 useless extension candidates. Maximal degree in co-relation 130429. Up to 14608 conditions per place. [2021-08-13 08:02:32,675 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 1312 selfloop transitions, 80 changer transitions 14/1419 dead transitions. [2021-08-13 08:02:32,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 1419 transitions, 29870 flow [2021-08-13 08:02:32,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 08:02:32,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 08:02:32,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2021-08-13 08:02:32,677 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7746031746031746 [2021-08-13 08:02:32,677 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 244 transitions. [2021-08-13 08:02:32,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 244 transitions. [2021-08-13 08:02:32,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:02:32,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 244 transitions. [2021-08-13 08:02:32,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:32,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:32,679 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:32,679 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 40 predicate places. [2021-08-13 08:02:32,679 INFO L482 AbstractCegarLoop]: Abstraction has has 88 places, 1419 transitions, 29870 flow [2021-08-13 08:02:32,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:32,679 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:02:32,679 INFO L266 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] [2021-08-13 08:02:32,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 08:02:32,679 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:02:32,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:02:32,680 INFO L82 PathProgramCache]: Analyzing trace with hash -779885262, now seen corresponding path program 1 times [2021-08-13 08:02:32,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:02:32,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793753520] [2021-08-13 08:02:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:02:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:02:32,723 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 08:02:32,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:02:32,734 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:32,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:32,742 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:32,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:32,752 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:32,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:32,766 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:32,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:32,776 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:32,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:32,777 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:32,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:32,780 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:32,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:32,789 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 08:02:32,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:02:32,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:32,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:32,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 08:02:32,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:02:32,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793753520] [2021-08-13 08:02:32,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793753520] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:02:32,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:02:32,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 08:02:32,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654543846] [2021-08-13 08:02:32,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 08:02:32,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:02:32,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 08:02:32,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 08:02:32,796 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 08:02:32,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 1419 transitions, 29870 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:32,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:02:32,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 08:02:32,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:02:37,876 INFO L129 PetriNetUnfolder]: 11908/17705 cut-off events. [2021-08-13 08:02:37,877 INFO L130 PetriNetUnfolder]: For 53912/55402 co-relation queries the response was YES. [2021-08-13 08:02:37,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160460 conditions, 17705 events. 11908/17705 cut-off events. For 53912/55402 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 109497 event pairs, 904 based on Foata normal form. 36/15344 useless extension candidates. Maximal degree in co-relation 160339. Up to 16108 conditions per place. [2021-08-13 08:02:38,050 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 1812 selfloop transitions, 80 changer transitions 20/1925 dead transitions. [2021-08-13 08:02:38,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 1925 transitions, 44226 flow [2021-08-13 08:02:38,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 08:02:38,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 08:02:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2021-08-13 08:02:38,052 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7746031746031746 [2021-08-13 08:02:38,052 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 244 transitions. [2021-08-13 08:02:38,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 244 transitions. [2021-08-13 08:02:38,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:02:38,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 244 transitions. [2021-08-13 08:02:38,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:38,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:38,053 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:38,053 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 46 predicate places. [2021-08-13 08:02:38,053 INFO L482 AbstractCegarLoop]: Abstraction has has 94 places, 1925 transitions, 44226 flow [2021-08-13 08:02:38,054 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:38,054 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:02:38,054 INFO L266 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] [2021-08-13 08:02:38,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 08:02:38,054 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:02:38,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:02:38,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1161876054, now seen corresponding path program 2 times [2021-08-13 08:02:38,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:02:38,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128961747] [2021-08-13 08:02:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:02:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:02:38,068 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 08:02:38,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:02:38,075 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:38,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:38,081 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:38,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:38,091 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:38,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:38,100 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:38,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:38,101 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:38,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:38,102 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 08:02:38,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:02:38,102 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:38,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:38,112 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 08:02:38,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:02:38,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:38,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:38,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 08:02:38,115 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:02:38,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128961747] [2021-08-13 08:02:38,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128961747] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:02:38,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:02:38,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 08:02:38,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660587408] [2021-08-13 08:02:38,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 08:02:38,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:02:38,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 08:02:38,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 08:02:38,117 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 08:02:38,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 1925 transitions, 44226 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:38,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:02:38,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 08:02:38,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:02:46,285 INFO L129 PetriNetUnfolder]: 13495/20032 cut-off events. [2021-08-13 08:02:46,285 INFO L130 PetriNetUnfolder]: For 60743/65228 co-relation queries the response was YES. [2021-08-13 08:02:46,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200688 conditions, 20032 events. 13495/20032 cut-off events. For 60743/65228 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 125783 event pairs, 904 based on Foata normal form. 114/17397 useless extension candidates. Maximal degree in co-relation 200556. Up to 18290 conditions per place. [2021-08-13 08:02:46,505 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 2490 selfloop transitions, 135 changer transitions 32/2670 dead transitions. [2021-08-13 08:02:46,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 2670 transitions, 66380 flow [2021-08-13 08:02:46,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 08:02:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 08:02:46,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2021-08-13 08:02:46,507 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-13 08:02:46,507 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 243 transitions. [2021-08-13 08:02:46,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 243 transitions. [2021-08-13 08:02:46,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:02:46,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 243 transitions. [2021-08-13 08:02:46,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 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) [2021-08-13 08:02:46,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:46,509 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:46,509 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 52 predicate places. [2021-08-13 08:02:46,509 INFO L482 AbstractCegarLoop]: Abstraction has has 100 places, 2670 transitions, 66380 flow [2021-08-13 08:02:46,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:46,509 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:02:46,509 INFO L266 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] [2021-08-13 08:02:46,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 08:02:46,509 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:02:46,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:02:46,510 INFO L82 PathProgramCache]: Analyzing trace with hash 2017671836, now seen corresponding path program 2 times [2021-08-13 08:02:46,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:02:46,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372500569] [2021-08-13 08:02:46,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:02:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:02:46,523 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 08:02:46,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:02:46,529 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:46,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:46,536 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:46,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:46,543 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:46,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:46,552 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:46,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:46,553 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:46,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:46,554 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 08:02:46,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:02:46,554 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:02:46,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:02:46,564 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 08:02:46,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:02:46,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:02:46,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:02:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 08:02:46,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:02:46,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372500569] [2021-08-13 08:02:46,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372500569] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:02:46,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:02:46,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 08:02:46,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730903412] [2021-08-13 08:02:46,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 08:02:46,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:02:46,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 08:02:46,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 08:02:46,568 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 08:02:46,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 2670 transitions, 66380 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:02:46,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:02:46,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 08:02:46,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:03:04,202 INFO L129 PetriNetUnfolder]: 15082/22471 cut-off events. [2021-08-13 08:03:04,202 INFO L130 PetriNetUnfolder]: For 66950/68747 co-relation queries the response was YES. [2021-08-13 08:03:04,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245484 conditions, 22471 events. 15082/22471 cut-off events. For 66950/68747 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 147262 event pairs, 774 based on Foata normal form. 56/19427 useless extension candidates. Maximal degree in co-relation 245341. Up to 20472 conditions per place. [2021-08-13 08:03:04,421 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 3223 selfloop transitions, 135 changer transitions 44/3415 dead transitions. [2021-08-13 08:03:04,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 3415 transitions, 91514 flow [2021-08-13 08:03:04,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 08:03:04,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 08:03:04,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2021-08-13 08:03:04,422 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-13 08:03:04,423 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 243 transitions. [2021-08-13 08:03:04,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 243 transitions. [2021-08-13 08:03:04,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:03:04,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 243 transitions. [2021-08-13 08:03:04,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 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) [2021-08-13 08:03:04,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:03:04,425 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:03:04,425 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 58 predicate places. [2021-08-13 08:03:04,425 INFO L482 AbstractCegarLoop]: Abstraction has has 106 places, 3415 transitions, 91514 flow [2021-08-13 08:03:04,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:03:04,425 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:03:04,425 INFO L266 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] [2021-08-13 08:03:04,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 08:03:04,425 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:03:04,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:03:04,425 INFO L82 PathProgramCache]: Analyzing trace with hash 443512840, now seen corresponding path program 3 times [2021-08-13 08:03:04,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:03:04,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064716456] [2021-08-13 08:03:04,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:03:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:03:04,566 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 08:03:04,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:03:04,572 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:03:04,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:03:04,579 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:03:04,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:03:04,587 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:03:04,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:03:04,588 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 08:03:04,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:03:04,589 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:03:04,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:03:04,598 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:03:04,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:03:04,608 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:03:04,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:03:04,610 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 08:03:04,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:03:04,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:03:04,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:03:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 08:03:04,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:03:04,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064716456] [2021-08-13 08:03:04,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064716456] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:03:04,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:03:04,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 08:03:04,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167712392] [2021-08-13 08:03:04,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 08:03:04,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:03:04,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 08:03:04,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 08:03:04,614 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 08:03:04,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 3415 transitions, 91514 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:03:04,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:03:04,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 08:03:04,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:03:38,332 INFO L129 PetriNetUnfolder]: 17225/25626 cut-off events. [2021-08-13 08:03:38,332 INFO L130 PetriNetUnfolder]: For 76782/85432 co-relation queries the response was YES. [2021-08-13 08:03:38,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304452 conditions, 25626 events. 17225/25626 cut-off events. For 76782/85432 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 170157 event pairs, 774 based on Foata normal form. 138/22182 useless extension candidates. Maximal degree in co-relation 304296. Up to 23420 conditions per place. [2021-08-13 08:03:38,580 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 4178 selfloop transitions, 179 changer transitions 62/4432 dead transitions. [2021-08-13 08:03:38,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 4432 transitions, 127436 flow [2021-08-13 08:03:38,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 08:03:38,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 08:03:38,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2021-08-13 08:03:38,582 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-13 08:03:38,582 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 243 transitions. [2021-08-13 08:03:38,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 243 transitions. [2021-08-13 08:03:38,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:03:38,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 243 transitions. [2021-08-13 08:03:38,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 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) [2021-08-13 08:03:38,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:03:38,588 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:03:38,588 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 64 predicate places. [2021-08-13 08:03:38,588 INFO L482 AbstractCegarLoop]: Abstraction has has 112 places, 4432 transitions, 127436 flow [2021-08-13 08:03:38,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:03:38,591 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:03:38,591 INFO L266 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] [2021-08-13 08:03:38,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 08:03:38,592 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:03:38,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:03:38,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1363035022, now seen corresponding path program 4 times [2021-08-13 08:03:38,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:03:38,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154197759] [2021-08-13 08:03:38,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:03:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:03:38,654 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 08:03:38,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:03:38,661 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:03:38,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:03:38,668 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 08:03:38,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:03:38,669 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:03:38,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:03:38,677 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:03:38,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:03:38,684 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:03:38,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:03:38,693 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:03:38,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:03:38,694 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:03:38,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:03:38,695 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 08:03:38,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:03:38,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:03:38,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:03:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 08:03:38,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:03:38,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154197759] [2021-08-13 08:03:38,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154197759] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:03:38,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:03:38,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 08:03:38,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141442046] [2021-08-13 08:03:38,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 08:03:38,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:03:38,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 08:03:38,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 08:03:38,700 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 08:03:38,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 4432 transitions, 127436 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:03:38,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:03:38,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 08:03:38,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:04:56,093 INFO L129 PetriNetUnfolder]: 19772/29412 cut-off events. [2021-08-13 08:04:56,093 INFO L130 PetriNetUnfolder]: For 83706/85949 co-relation queries the response was YES. [2021-08-13 08:04:56,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 377234 conditions, 29412 events. 19772/29412 cut-off events. For 83706/85949 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 199318 event pairs, 774 based on Foata normal form. 44/25292 useless extension candidates. Maximal degree in co-relation 377063. Up to 26926 conditions per place. [2021-08-13 08:04:56,442 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 5347 selfloop transitions, 209 changer transitions 86/5655 dead transitions. [2021-08-13 08:04:56,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 5655 transitions, 173778 flow [2021-08-13 08:04:56,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 08:04:56,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 08:04:56,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2021-08-13 08:04:56,444 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-13 08:04:56,444 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 243 transitions. [2021-08-13 08:04:56,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 243 transitions. [2021-08-13 08:04:56,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:04:56,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 243 transitions. [2021-08-13 08:04:56,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 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) [2021-08-13 08:04:56,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:04:56,446 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:04:56,448 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 70 predicate places. [2021-08-13 08:04:56,448 INFO L482 AbstractCegarLoop]: Abstraction has has 118 places, 5655 transitions, 173778 flow [2021-08-13 08:04:56,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:04:56,448 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:04:56,448 INFO L266 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] [2021-08-13 08:04:56,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 08:04:56,449 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:04:56,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:04:56,449 INFO L82 PathProgramCache]: Analyzing trace with hash 286299708, now seen corresponding path program 5 times [2021-08-13 08:04:56,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:04:56,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652753842] [2021-08-13 08:04:56,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:04:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:04:56,510 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 08:04:56,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:04:56,517 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:04:56,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:04:56,533 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:04:56,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:04:56,544 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:04:56,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:04:56,554 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:04:56,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:04:56,567 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:04:56,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:04:56,568 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:04:56,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:04:56,571 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:04:56,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:04:56,573 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 08:04:56,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:04:56,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:04:56,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:04:56,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 08:04:56,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:04:56,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652753842] [2021-08-13 08:04:56,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652753842] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:04:56,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:04:56,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 08:04:56,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34611169] [2021-08-13 08:04:56,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 08:04:56,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:04:56,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 08:04:56,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 08:04:56,582 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 08:04:56,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 5655 transitions, 173778 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:04:56,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:04:56,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 08:04:56,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:07:35,842 INFO L129 PetriNetUnfolder]: 22469/33413 cut-off events. [2021-08-13 08:07:35,864 INFO L130 PetriNetUnfolder]: For 96450/104419 co-relation queries the response was YES. [2021-08-13 08:07:35,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 460443 conditions, 33413 events. 22469/33413 cut-off events. For 96450/104419 co-relation queries the response was YES. Maximal size of possible extension queue 1680. Compared 229767 event pairs, 774 based on Foata normal form. 138/28752 useless extension candidates. Maximal degree in co-relation 460237. Up to 30646 conditions per place. [2021-08-13 08:07:36,270 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 6633 selfloop transitions, 212 changer transitions 110/6968 dead transitions. [2021-08-13 08:07:36,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 6968 transitions, 228048 flow [2021-08-13 08:07:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 08:07:36,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 08:07:36,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2021-08-13 08:07:36,272 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7746031746031746 [2021-08-13 08:07:36,272 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 244 transitions. [2021-08-13 08:07:36,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 244 transitions. [2021-08-13 08:07:36,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:07:36,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 244 transitions. [2021-08-13 08:07:36,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:07:36,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:07:36,274 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:07:36,274 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 76 predicate places. [2021-08-13 08:07:36,274 INFO L482 AbstractCegarLoop]: Abstraction has has 124 places, 6968 transitions, 228048 flow [2021-08-13 08:07:36,274 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:07:36,274 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:07:36,274 INFO L266 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] [2021-08-13 08:07:36,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 08:07:36,274 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:07:36,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:07:36,274 INFO L82 PathProgramCache]: Analyzing trace with hash 960725144, now seen corresponding path program 3 times [2021-08-13 08:07:36,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:07:36,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253618602] [2021-08-13 08:07:36,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:07:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:07:36,297 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 08:07:36,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:07:36,302 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:07:36,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:07:36,308 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:07:36,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:07:36,316 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:07:36,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:07:36,316 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 08:07:36,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:07:36,317 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:07:36,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:07:36,325 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:07:36,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:07:36,334 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 08:07:36,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:07:36,339 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 08:07:36,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:07:36,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:07:36,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:07:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 08:07:36,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:07:36,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253618602] [2021-08-13 08:07:36,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253618602] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:07:36,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:07:36,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 08:07:36,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71740240] [2021-08-13 08:07:36,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 08:07:36,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:07:36,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 08:07:36,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 08:07:36,343 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 08:07:36,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 6968 transitions, 228048 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:07:36,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:07:36,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 08:07:36,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-08-13 08:11:49,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 08:11:49,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 08:11:49,443 WARN L547 AbstractCegarLoop]: Verification canceled [2021-08-13 08:11:49,446 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-13 08:11:49,448 WARN L188 ceAbstractionStarter]: Timeout [2021-08-13 08:11:49,448 INFO L202 PluginConnector]: Adding new model exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 08:11:49 BasicIcfg [2021-08-13 08:11:49,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 08:11:49,453 INFO L168 Benchmark]: Toolchain (without parser) took 574506.62 ms. Allocated memory was 163.6 MB in the beginning and 7.5 GB in the end (delta: 7.3 GB). Free memory was 143.6 MB in the beginning and 4.2 GB in the end (delta: -4.1 GB). Peak memory consumption was 4.7 GB. Max. memory is 8.0 GB. [2021-08-13 08:11:49,453 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 163.6 MB. Free memory is still 144.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 08:11:49,453 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.69 ms. Allocated memory is still 163.6 MB. Free memory was 143.5 MB in the beginning and 142.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 08:11:49,453 INFO L168 Benchmark]: Boogie Preprocessor took 17.82 ms. Allocated memory is still 163.6 MB. Free memory was 142.0 MB in the beginning and 141.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 08:11:49,453 INFO L168 Benchmark]: RCFGBuilder took 212.60 ms. Allocated memory is still 163.6 MB. Free memory was 140.9 MB in the beginning and 128.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-08-13 08:11:49,454 INFO L168 Benchmark]: TraceAbstraction took 574245.49 ms. Allocated memory was 163.6 MB in the beginning and 7.5 GB in the end (delta: 7.3 GB). Free memory was 128.0 MB in the beginning and 4.2 GB in the end (delta: -4.1 GB). Peak memory consumption was 4.6 GB. Max. memory is 8.0 GB. [2021-08-13 08:11:49,455 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 163.6 MB. Free memory is still 144.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.69 ms. Allocated memory is still 163.6 MB. Free memory was 143.5 MB in the beginning and 142.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.82 ms. Allocated memory is still 163.6 MB. Free memory was 142.0 MB in the beginning and 141.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 212.60 ms. Allocated memory is still 163.6 MB. Free memory was 140.9 MB in the beginning and 128.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 574245.49 ms. Allocated memory was 163.6 MB in the beginning and 7.5 GB in the end (delta: 7.3 GB). Free memory was 128.0 MB in the beginning and 4.2 GB in the end (delta: -4.1 GB). Peak memory consumption was 4.6 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 18/45 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 465013 conditions, 31272 events (21221/31271 cut-off events. For 93125/101928 co-relation queries the response was YES. Maximal size of possible extension queue 2010. Compared 225349 event pairs, 550 based on Foata normal form. 209/27686 useless extension candidates. Maximal degree in co-relation 464959. Up to 28977 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 74 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 16.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 574161.7ms, OverallIterations: 17, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 572232.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 42.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 210 SDtfs, 445 SDslu, 52 SDs, 0 SdLazy, 4684 SolverSat, 220 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2289.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 63 SyntacticMatches, 9 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 395.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=228048occurred in iteration=16, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.1ms SsaConstructionTime, 151.9ms SatisfiabilityAnalysisTime, 1121.2ms InterpolantComputationTime, 467 NumberOfCodeBlocks, 467 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 449 ConstructedInterpolants, 0 QuantifiedInterpolants, 2961 SizeOfPredicates, 1 NumberOfNonLiveVariables, 67 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 18 InterpolantComputations, 16 PerfectInterpolantSequences, 23/25 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown