/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/container-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 05:07:18,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 05:07:18,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 05:07:18,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 05:07:18,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 05:07:18,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 05:07:18,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 05:07:18,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 05:07:18,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 05:07:18,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 05:07:18,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 05:07:18,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 05:07:18,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 05:07:18,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 05:07:18,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 05:07:18,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 05:07:18,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 05:07:18,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 05:07:18,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 05:07:18,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 05:07:18,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 05:07:18,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 05:07:18,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 05:07:18,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 05:07:18,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 05:07:18,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-29 05:07:18,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-29 05:07:18,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-29 05:07:18,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-29 05:07:18,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-29 05:07:18,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-29 05:07:18,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-29 05:07:18,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-29 05:07:18,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 05:07:18,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 05:07:18,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 05:07:18,904 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 05:07:18,964 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 05:07:18,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 05:07:18,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 05:07:18,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 05:07:18,969 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 05:07:18,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 05:07:18,970 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 05:07:18,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 05:07:18,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 05:07:18,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 05:07:18,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 05:07:18,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 05:07:18,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 05:07:18,974 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 05:07:18,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 05:07:18,974 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 05:07:18,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 05:07:18,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 05:07:18,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 05:07:18,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 05:07:18,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 05:07:18,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 05:07:18,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 05:07:18,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 05:07:18,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 05:07:18,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 05:07:18,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 05:07:18,978 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 05:07:18,978 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 05:07:18,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 05:07:18,979 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 05:07:19,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 05:07:19,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 05:07:19,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 05:07:19,450 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-29 05:07:19,451 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-29 05:07:19,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/container-subst.wvr.bpl [2021-04-29 05:07:19,455 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/container-subst.wvr.bpl' [2021-04-29 05:07:19,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 05:07:19,556 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-29 05:07:19,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 05:07:19,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 05:07:19,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 05:07:19,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:19" (1/1) ... [2021-04-29 05:07:19,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:19" (1/1) ... [2021-04-29 05:07:19,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 05:07:19,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 05:07:19,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 05:07:19,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 05:07:19,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:19" (1/1) ... [2021-04-29 05:07:19,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:19" (1/1) ... [2021-04-29 05:07:19,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:19" (1/1) ... [2021-04-29 05:07:19,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:19" (1/1) ... [2021-04-29 05:07:19,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:19" (1/1) ... [2021-04-29 05:07:19,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:19" (1/1) ... [2021-04-29 05:07:19,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:19" (1/1) ... [2021-04-29 05:07:19,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 05:07:19,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 05:07:19,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 05:07:19,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 05:07:19,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 05:07:19,747 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-04-29 05:07:19,749 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-04-29 05:07:19,750 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-04-29 05:07:19,750 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-04-29 05:07:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-04-29 05:07:19,750 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-04-29 05:07:19,750 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-29 05:07:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 05:07:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 05:07:19,751 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-04-29 05:07:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-04-29 05:07:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-04-29 05:07:19,753 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 05:07:20,060 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 05:07:20,060 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-29 05:07:20,063 INFO L202 PluginConnector]: Adding new model container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 05:07:20 BoogieIcfgContainer [2021-04-29 05:07:20,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 05:07:20,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 05:07:20,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 05:07:20,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 05:07:20,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:19" (1/2) ... [2021-04-29 05:07:20,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc24069 and model type container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 05:07:20, skipping insertion in model container [2021-04-29 05:07:20,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 05:07:20" (2/2) ... [2021-04-29 05:07:20,073 INFO L111 eAbstractionObserver]: Analyzing ICFG container-subst.wvr.bpl [2021-04-29 05:07:20,085 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 05:07:20,092 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 05:07:20,093 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 05:07:20,144 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-04-29 05:07:20,218 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-29 05:07:20,248 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 05:07:20,248 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 05:07:20,248 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 05:07:20,249 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 05:07:20,249 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 05:07:20,249 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 05:07:20,249 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 05:07:20,249 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 05:07:20,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-04-29 05:07:20,295 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-04-29 05:07:20,295 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-29 05:07:20,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:07:20,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 19 transitions, 62 flow [2021-04-29 05:07:20,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 14 transitions, 46 flow [2021-04-29 05:07:20,305 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:20,334 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 14 transitions, 46 flow [2021-04-29 05:07:20,342 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 14 transitions, 46 flow [2021-04-29 05:07:20,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 14 transitions, 46 flow [2021-04-29 05:07:20,370 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-04-29 05:07:20,371 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-29 05:07:20,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 14 events. 0/14 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:07:20,378 INFO L146 LiptonReduction]: Number of co-enabled transitions 48 [2021-04-29 05:07:20,635 INFO L158 LiptonReduction]: Checked pairs total: 18 [2021-04-29 05:07:20,635 INFO L160 LiptonReduction]: Total number of compositions: 4 [2021-04-29 05:07:20,643 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 339 [2021-04-29 05:07:20,680 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-04-29 05:07:20,680 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-29 05:07:20,681 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:20,684 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:20,685 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:20,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:20,705 INFO L82 PathProgramCache]: Analyzing trace with hash 840283623, now seen corresponding path program 1 times [2021-04-29 05:07:20,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:20,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558955087] [2021-04-29 05:07:20,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:21,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:21,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:21,947 WARN L205 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 194 [2021-04-29 05:07:21,953 INFO L142 QuantifierPusher]: treesize reduction 17330, result has 24.3 percent of original size [2021-04-29 05:07:22,036 INFO L147 QuantifierPusher]: treesize reduction 3202, result has 42.4 percent of original size 2354 [2021-04-29 05:07:22,883 WARN L205 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 42 [2021-04-29 05:07:23,054 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 127 [2021-04-29 05:07:23,056 INFO L142 QuantifierPusher]: treesize reduction 16617, result has 6.4 percent of original size [2021-04-29 05:07:23,083 INFO L147 QuantifierPusher]: treesize reduction 114, result has 90.0 percent of original size 1029 [2021-04-29 05:07:23,563 WARN L205 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 72 [2021-04-29 05:07:23,576 INFO L142 QuantifierPusher]: treesize reduction 558, result has 27.2 percent of original size [2021-04-29 05:07:23,580 INFO L147 QuantifierPusher]: treesize reduction 134, result has 35.6 percent of original size 74 [2021-04-29 05:07:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:07:23,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558955087] [2021-04-29 05:07:23,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:23,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:07:23,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780674161] [2021-04-29 05:07:23,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:07:23,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:23,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:07:23,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:07:23,717 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:07:23,719 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:23,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:23,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:07:23,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:23,964 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-04-29 05:07:24,246 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-04-29 05:07:24,300 INFO L129 PetriNetUnfolder]: 16/86 cut-off events. [2021-04-29 05:07:24,300 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-04-29 05:07:24,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 86 events. 16/86 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 456 event pairs, 4 based on Foata normal form. 1/52 useless extension candidates. Maximal degree in co-relation 152. Up to 32 conditions per place. [2021-04-29 05:07:24,305 INFO L132 encePairwiseOnDemand]: 15/23 looper letters, 5 selfloop transitions, 2 changer transitions 9/22 dead transitions. [2021-04-29 05:07:24,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 94 flow [2021-04-29 05:07:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:07:24,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:07:24,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2021-04-29 05:07:24,319 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7652173913043478 [2021-04-29 05:07:24,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 88 transitions. [2021-04-29 05:07:24,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 88 transitions. [2021-04-29 05:07:24,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:24,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 88 transitions. [2021-04-29 05:07:24,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:24,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:24,334 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:24,336 INFO L185 Difference]: Start difference. First operand has 24 places, 14 transitions, 46 flow. Second operand 5 states and 88 transitions. [2021-04-29 05:07:24,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 94 flow [2021-04-29 05:07:24,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 22 transitions, 82 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-04-29 05:07:24,344 INFO L241 Difference]: Finished difference. Result has 25 places, 11 transitions, 41 flow [2021-04-29 05:07:24,346 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=41, PETRI_PLACES=25, PETRI_TRANSITIONS=11} [2021-04-29 05:07:24,347 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2021-04-29 05:07:24,347 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:24,348 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 11 transitions, 41 flow [2021-04-29 05:07:24,348 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 11 transitions, 41 flow [2021-04-29 05:07:24,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 11 transitions, 41 flow [2021-04-29 05:07:24,354 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-04-29 05:07:24,354 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-29 05:07:24,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 18 events. 0/18 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 05:07:24,355 INFO L146 LiptonReduction]: Number of co-enabled transitions 16 [2021-04-29 05:07:24,356 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:24,356 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:24,356 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-04-29 05:07:24,358 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 11 transitions, 41 flow [2021-04-29 05:07:24,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:24,359 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:24,359 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:24,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 05:07:24,360 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:24,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:24,360 INFO L82 PathProgramCache]: Analyzing trace with hash -934779477, now seen corresponding path program 2 times [2021-04-29 05:07:24,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:24,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002333778] [2021-04-29 05:07:24,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:24,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:24,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:25,303 WARN L205 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 417 DAG size of output: 214 [2021-04-29 05:07:25,305 INFO L142 QuantifierPusher]: treesize reduction 41775, result has 12.7 percent of original size [2021-04-29 05:07:25,383 INFO L147 QuantifierPusher]: treesize reduction 2505, result has 58.9 percent of original size 3591 [2021-04-29 05:07:26,145 WARN L205 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 44 [2021-04-29 05:07:26,219 INFO L142 QuantifierPusher]: treesize reduction 9505, result has 14.7 percent of original size [2021-04-29 05:07:26,240 INFO L147 QuantifierPusher]: treesize reduction 162, result has 90.1 percent of original size 1473 [2021-04-29 05:07:27,159 WARN L205 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 74 [2021-04-29 05:07:27,176 INFO L142 QuantifierPusher]: treesize reduction 705, result has 11.5 percent of original size [2021-04-29 05:07:27,178 INFO L147 QuantifierPusher]: treesize reduction 22, result has 76.1 percent of original size 70 [2021-04-29 05:07:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:07:27,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002333778] [2021-04-29 05:07:27,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:27,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:07:27,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141735910] [2021-04-29 05:07:27,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:07:27,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:27,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:07:27,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:07:27,264 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:07:27,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 11 transitions, 41 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:27,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:27,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:07:27,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:27,695 WARN L205 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2021-04-29 05:07:28,128 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 113 [2021-04-29 05:07:28,146 INFO L129 PetriNetUnfolder]: 2/29 cut-off events. [2021-04-29 05:07:28,147 INFO L130 PetriNetUnfolder]: For 24/26 co-relation queries the response was YES. [2021-04-29 05:07:28,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 29 events. 2/29 cut-off events. For 24/26 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 82 event pairs, 0 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 58. Up to 7 conditions per place. [2021-04-29 05:07:28,148 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 5 selfloop transitions, 2 changer transitions 3/16 dead transitions. [2021-04-29 05:07:28,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 16 transitions, 85 flow [2021-04-29 05:07:28,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:07:28,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:07:28,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-04-29 05:07:28,152 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2021-04-29 05:07:28,152 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-04-29 05:07:28,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-04-29 05:07:28,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:28,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-04-29 05:07:28,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:28,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:28,157 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:28,157 INFO L185 Difference]: Start difference. First operand has 20 places, 11 transitions, 41 flow. Second operand 5 states and 79 transitions. [2021-04-29 05:07:28,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 16 transitions, 85 flow [2021-04-29 05:07:28,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 78 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-04-29 05:07:28,162 INFO L241 Difference]: Finished difference. Result has 25 places, 11 transitions, 51 flow [2021-04-29 05:07:28,163 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=51, PETRI_PLACES=25, PETRI_TRANSITIONS=11} [2021-04-29 05:07:28,163 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2021-04-29 05:07:28,164 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:28,164 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 11 transitions, 51 flow [2021-04-29 05:07:28,164 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 11 transitions, 51 flow [2021-04-29 05:07:28,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 11 transitions, 51 flow [2021-04-29 05:07:28,170 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-04-29 05:07:28,170 INFO L130 PetriNetUnfolder]: For 13/14 co-relation queries the response was YES. [2021-04-29 05:07:28,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 17 events. 0/17 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 05:07:28,171 INFO L146 LiptonReduction]: Number of co-enabled transitions 14 [2021-04-29 05:07:28,172 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:28,173 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:28,173 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-04-29 05:07:28,174 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 11 transitions, 51 flow [2021-04-29 05:07:28,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:28,175 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:28,175 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:28,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 05:07:28,175 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:28,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:28,176 INFO L82 PathProgramCache]: Analyzing trace with hash 883606447, now seen corresponding path program 3 times [2021-04-29 05:07:28,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:28,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140220904] [2021-04-29 05:07:28,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:28,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:28,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:28,364 INFO L142 QuantifierPusher]: treesize reduction 2128, result has 10.5 percent of original size [2021-04-29 05:07:28,367 INFO L147 QuantifierPusher]: treesize reduction 6, result has 97.6 percent of original size 244 [2021-04-29 05:07:28,503 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 48 [2021-04-29 05:07:28,671 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 131 [2021-04-29 05:07:28,672 INFO L142 QuantifierPusher]: treesize reduction 16040, result has 10.7 percent of original size [2021-04-29 05:07:28,696 INFO L147 QuantifierPusher]: treesize reduction 802, result has 58.2 percent of original size 1117 [2021-04-29 05:07:29,474 WARN L205 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 75 [2021-04-29 05:07:29,509 INFO L142 QuantifierPusher]: treesize reduction 627, result has 34.1 percent of original size [2021-04-29 05:07:29,515 INFO L147 QuantifierPusher]: treesize reduction 74, result has 77.2 percent of original size 250 [2021-04-29 05:07:29,687 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 18 [2021-04-29 05:07:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:07:29,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140220904] [2021-04-29 05:07:29,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:29,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:07:29,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703157446] [2021-04-29 05:07:29,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:07:29,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:29,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:07:29,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:07:29,693 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:07:29,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 11 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:29,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:29,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:07:29,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:29,926 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-04-29 05:07:30,190 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-04-29 05:07:30,208 INFO L129 PetriNetUnfolder]: 1/23 cut-off events. [2021-04-29 05:07:30,208 INFO L130 PetriNetUnfolder]: For 45/49 co-relation queries the response was YES. [2021-04-29 05:07:30,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 23 events. 1/23 cut-off events. For 45/49 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 1 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 56. Up to 5 conditions per place. [2021-04-29 05:07:30,209 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 5 selfloop transitions, 3 changer transitions 1/15 dead transitions. [2021-04-29 05:07:30,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 15 transitions, 93 flow [2021-04-29 05:07:30,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:07:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:07:30,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-04-29 05:07:30,211 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2021-04-29 05:07:30,211 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-04-29 05:07:30,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-04-29 05:07:30,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:30,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-04-29 05:07:30,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:30,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:30,214 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:30,214 INFO L185 Difference]: Start difference. First operand has 24 places, 11 transitions, 51 flow. Second operand 5 states and 79 transitions. [2021-04-29 05:07:30,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 15 transitions, 93 flow [2021-04-29 05:07:30,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 15 transitions, 74 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-04-29 05:07:30,217 INFO L241 Difference]: Finished difference. Result has 27 places, 12 transitions, 62 flow [2021-04-29 05:07:30,217 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=62, PETRI_PLACES=27, PETRI_TRANSITIONS=12} [2021-04-29 05:07:30,217 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2021-04-29 05:07:30,217 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:30,218 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 12 transitions, 62 flow [2021-04-29 05:07:30,218 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 12 transitions, 62 flow [2021-04-29 05:07:30,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 12 transitions, 62 flow [2021-04-29 05:07:30,223 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-04-29 05:07:30,224 INFO L130 PetriNetUnfolder]: For 20/24 co-relation queries the response was YES. [2021-04-29 05:07:30,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 18 events. 0/18 cut-off events. For 20/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 05:07:30,224 INFO L146 LiptonReduction]: Number of co-enabled transitions 14 [2021-04-29 05:07:30,226 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:30,226 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:30,226 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-04-29 05:07:30,227 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 12 transitions, 62 flow [2021-04-29 05:07:30,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:30,228 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:30,228 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:30,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 05:07:30,228 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:30,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:30,229 INFO L82 PathProgramCache]: Analyzing trace with hash -31273989, now seen corresponding path program 4 times [2021-04-29 05:07:30,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:30,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198388713] [2021-04-29 05:07:30,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:30,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:30,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:30,442 INFO L142 QuantifierPusher]: treesize reduction 1571, result has 13.7 percent of original size [2021-04-29 05:07:30,445 INFO L147 QuantifierPusher]: treesize reduction 6, result has 97.6 percent of original size 244 [2021-04-29 05:07:30,589 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 48 [2021-04-29 05:07:30,623 INFO L142 QuantifierPusher]: treesize reduction 2497, result has 20.8 percent of original size [2021-04-29 05:07:30,630 INFO L147 QuantifierPusher]: treesize reduction 84, result has 87.2 percent of original size 572 [2021-04-29 05:07:31,164 WARN L205 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 79 [2021-04-29 05:07:31,169 INFO L142 QuantifierPusher]: treesize reduction 226, result has 27.8 percent of original size [2021-04-29 05:07:31,170 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.4 percent of original size 83 [2021-04-29 05:07:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:07:31,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198388713] [2021-04-29 05:07:31,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:31,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:07:31,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263491712] [2021-04-29 05:07:31,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:07:31,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:31,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:07:31,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:07:31,254 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:07:31,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 12 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:31,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:31,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:07:31,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:31,504 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-04-29 05:07:31,804 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-04-29 05:07:31,819 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2021-04-29 05:07:31,819 INFO L130 PetriNetUnfolder]: For 47/59 co-relation queries the response was YES. [2021-04-29 05:07:31,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 19 events. 1/19 cut-off events. For 47/59 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 33 event pairs, 1 based on Foata normal form. 3/21 useless extension candidates. Maximal degree in co-relation 54. Up to 5 conditions per place. [2021-04-29 05:07:31,821 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 3 selfloop transitions, 1 changer transitions 4/14 dead transitions. [2021-04-29 05:07:31,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 14 transitions, 92 flow [2021-04-29 05:07:31,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:07:31,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:07:31,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2021-04-29 05:07:31,827 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6782608695652174 [2021-04-29 05:07:31,827 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 78 transitions. [2021-04-29 05:07:31,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 78 transitions. [2021-04-29 05:07:31,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:31,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 78 transitions. [2021-04-29 05:07:31,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:31,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:31,832 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:31,832 INFO L185 Difference]: Start difference. First operand has 26 places, 12 transitions, 62 flow. Second operand 5 states and 78 transitions. [2021-04-29 05:07:31,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 14 transitions, 92 flow [2021-04-29 05:07:31,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 14 transitions, 88 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-04-29 05:07:31,837 INFO L241 Difference]: Finished difference. Result has 30 places, 10 transitions, 49 flow [2021-04-29 05:07:31,838 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=49, PETRI_PLACES=30, PETRI_TRANSITIONS=10} [2021-04-29 05:07:31,838 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2021-04-29 05:07:31,838 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:31,838 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 10 transitions, 49 flow [2021-04-29 05:07:31,839 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 10 transitions, 49 flow [2021-04-29 05:07:31,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 10 transitions, 49 flow [2021-04-29 05:07:31,850 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-04-29 05:07:31,850 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2021-04-29 05:07:31,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 10 events. 0/10 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:07:31,863 INFO L146 LiptonReduction]: Number of co-enabled transitions 4 [2021-04-29 05:07:31,864 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:31,864 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:31,865 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-04-29 05:07:31,866 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 10 transitions, 49 flow [2021-04-29 05:07:31,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:31,867 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:31,867 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:31,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 05:07:31,867 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:31,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:31,868 INFO L82 PathProgramCache]: Analyzing trace with hash 815259183, now seen corresponding path program 5 times [2021-04-29 05:07:31,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:31,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714027410] [2021-04-29 05:07:31,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:31,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:31,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:32,144 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 244 [2021-04-29 05:07:32,146 INFO L142 QuantifierPusher]: treesize reduction 17560, result has 25.0 percent of original size [2021-04-29 05:07:32,207 INFO L147 QuantifierPusher]: treesize reduction 2578, result has 56.0 percent of original size 3279 [2021-04-29 05:07:32,941 WARN L205 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 61 [2021-04-29 05:07:32,962 INFO L142 QuantifierPusher]: treesize reduction 1219, result has 36.3 percent of original size [2021-04-29 05:07:32,968 INFO L147 QuantifierPusher]: treesize reduction 80, result has 88.5 percent of original size 616 [2021-04-29 05:07:33,490 WARN L205 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2021-04-29 05:07:33,494 INFO L142 QuantifierPusher]: treesize reduction 230, result has 36.3 percent of original size [2021-04-29 05:07:33,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-04-29 05:07:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:07:33,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714027410] [2021-04-29 05:07:33,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:33,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:07:33,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086913475] [2021-04-29 05:07:33,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:07:33,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:33,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:07:33,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:07:33,604 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:07:33,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 10 transitions, 49 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:33,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:33,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:07:33,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:33,846 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-04-29 05:07:34,126 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-04-29 05:07:34,140 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-04-29 05:07:34,140 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-04-29 05:07:34,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 16 events. 0/16 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 05:07:34,141 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 3 selfloop transitions, 1 changer transitions 2/12 dead transitions. [2021-04-29 05:07:34,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 12 transitions, 82 flow [2021-04-29 05:07:34,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:07:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:07:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2021-04-29 05:07:34,150 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6695652173913044 [2021-04-29 05:07:34,151 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 77 transitions. [2021-04-29 05:07:34,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 77 transitions. [2021-04-29 05:07:34,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:34,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 77 transitions. [2021-04-29 05:07:34,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:34,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:34,155 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:34,155 INFO L185 Difference]: Start difference. First operand has 27 places, 10 transitions, 49 flow. Second operand 5 states and 77 transitions. [2021-04-29 05:07:34,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 12 transitions, 82 flow [2021-04-29 05:07:34,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 12 transitions, 47 flow, removed 6 selfloop flow, removed 11 redundant places. [2021-04-29 05:07:34,160 INFO L241 Difference]: Finished difference. Result has 23 places, 10 transitions, 35 flow [2021-04-29 05:07:34,161 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=35, PETRI_PLACES=23, PETRI_TRANSITIONS=10} [2021-04-29 05:07:34,162 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2021-04-29 05:07:34,162 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:34,162 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 10 transitions, 35 flow [2021-04-29 05:07:34,163 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 10 transitions, 35 flow [2021-04-29 05:07:34,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 10 transitions, 35 flow [2021-04-29 05:07:34,174 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-04-29 05:07:34,175 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-29 05:07:34,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 11 events. 0/11 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:07:34,183 INFO L146 LiptonReduction]: Number of co-enabled transitions 2 [2021-04-29 05:07:34,187 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:34,187 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:34,188 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-04-29 05:07:34,189 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 10 transitions, 35 flow [2021-04-29 05:07:34,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:34,191 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:34,191 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:34,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 05:07:34,191 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:34,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:34,192 INFO L82 PathProgramCache]: Analyzing trace with hash -902489877, now seen corresponding path program 6 times [2021-04-29 05:07:34,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:34,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577350989] [2021-04-29 05:07:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:34,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:34,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:34,702 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 452 DAG size of output: 280 [2021-04-29 05:07:34,704 INFO L142 QuantifierPusher]: treesize reduction 42009, result has 11.0 percent of original size [2021-04-29 05:07:34,750 INFO L147 QuantifierPusher]: treesize reduction 1231, result has 76.3 percent of original size 3974 [2021-04-29 05:07:35,519 WARN L205 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 53 [2021-04-29 05:07:35,537 INFO L142 QuantifierPusher]: treesize reduction 960, result has 49.3 percent of original size [2021-04-29 05:07:35,545 INFO L147 QuantifierPusher]: treesize reduction 346, result has 63.0 percent of original size 589 [2021-04-29 05:07:35,989 WARN L205 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-04-29 05:07:35,995 INFO L142 QuantifierPusher]: treesize reduction 230, result has 36.3 percent of original size [2021-04-29 05:07:35,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-04-29 05:07:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:07:36,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577350989] [2021-04-29 05:07:36,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:36,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:07:36,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237343514] [2021-04-29 05:07:36,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:07:36,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:36,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:07:36,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:07:36,112 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:07:36,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 10 transitions, 35 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:36,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:36,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:07:36,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:36,364 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-04-29 05:07:36,613 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-04-29 05:07:36,615 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-04-29 05:07:36,615 INFO L130 PetriNetUnfolder]: For 9/11 co-relation queries the response was YES. [2021-04-29 05:07:36,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 10 events. 0/10 cut-off events. For 9/11 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:07:36,616 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2021-04-29 05:07:36,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 10 transitions, 44 flow [2021-04-29 05:07:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:07:36,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:07:36,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2021-04-29 05:07:36,617 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2021-04-29 05:07:36,617 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 75 transitions. [2021-04-29 05:07:36,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 75 transitions. [2021-04-29 05:07:36,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:36,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 75 transitions. [2021-04-29 05:07:36,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:36,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:36,619 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:36,619 INFO L185 Difference]: Start difference. First operand has 21 places, 10 transitions, 35 flow. Second operand 5 states and 75 transitions. [2021-04-29 05:07:36,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 10 transitions, 44 flow [2021-04-29 05:07:36,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 10 transitions, 40 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-04-29 05:07:36,620 INFO L241 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2021-04-29 05:07:36,620 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2021-04-29 05:07:36,620 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, -2 predicate places. [2021-04-29 05:07:36,621 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:36,621 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 0 transitions, 0 flow [2021-04-29 05:07:36,621 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 0 transitions, 0 flow [2021-04-29 05:07:36,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 05:07:36,621 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 05:07:36,621 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 05:07:36,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 05:07:36,622 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 05:07:36,622 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:36,622 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:36,622 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-04-29 05:07:36,624 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 05:07:36,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:36,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 05:07:36,628 INFO L202 PluginConnector]: Adding new model container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 05:07:36 BasicIcfg [2021-04-29 05:07:36,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 05:07:36,630 INFO L168 Benchmark]: Toolchain (without parser) took 17115.96 ms. Allocated memory was 337.6 MB in the beginning and 658.5 MB in the end (delta: 320.9 MB). Free memory was 319.7 MB in the beginning and 606.8 MB in the end (delta: -287.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. [2021-04-29 05:07:36,630 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.83 ms. Allocated memory is still 337.6 MB. Free memory is still 320.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 05:07:36,631 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.69 ms. Allocated memory is still 337.6 MB. Free memory was 316.6 MB in the beginning and 315.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 05:07:36,631 INFO L168 Benchmark]: Boogie Preprocessor took 33.88 ms. Allocated memory is still 337.6 MB. Free memory was 315.1 MB in the beginning and 314.3 MB in the end (delta: 872.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 05:07:36,632 INFO L168 Benchmark]: RCFGBuilder took 427.87 ms. Allocated memory is still 337.6 MB. Free memory was 314.1 MB in the beginning and 296.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-04-29 05:07:36,632 INFO L168 Benchmark]: TraceAbstraction took 16563.57 ms. Allocated memory was 337.6 MB in the beginning and 658.5 MB in the end (delta: 320.9 MB). Free memory was 296.1 MB in the beginning and 606.8 MB in the end (delta: -310.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-04-29 05:07:36,635 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 0.83 ms. Allocated memory is still 337.6 MB. Free memory is still 320.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.69 ms. Allocated memory is still 337.6 MB. Free memory was 316.6 MB in the beginning and 315.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.88 ms. Allocated memory is still 337.6 MB. Free memory was 315.1 MB in the beginning and 314.3 MB in the end (delta: 872.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 427.87 ms. Allocated memory is still 337.6 MB. Free memory was 314.1 MB in the beginning and 296.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 16563.57 ms. Allocated memory was 337.6 MB in the beginning and 658.5 MB in the end (delta: 320.9 MB). Free memory was 296.1 MB in the beginning and 606.8 MB in the end (delta: -310.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 294.0ms, 24 PlacesBefore, 24 PlacesAfterwards, 14 TransitionsBefore, 14 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 18 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 18, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 18, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.3ms, 25 PlacesBefore, 20 PlacesAfterwards, 11 TransitionsBefore, 11 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 18, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.3ms, 25 PlacesBefore, 24 PlacesAfterwards, 11 TransitionsBefore, 11 TransitionsAfterwards, 14 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 18, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.0ms, 27 PlacesBefore, 26 PlacesAfterwards, 12 TransitionsBefore, 12 TransitionsAfterwards, 14 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 18, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26.0ms, 30 PlacesBefore, 27 PlacesAfterwards, 10 TransitionsBefore, 10 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 18, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.9ms, 23 PlacesBefore, 21 PlacesAfterwards, 10 TransitionsBefore, 10 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 18, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9ms, 22 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 18, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 68]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 15.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 16383.0ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 3719.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 414.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 32 SDslu, 0 SDs, 0 SdLazy, 110 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 234.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10897.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=3, InterpolantAutomatonStates: 30, 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: 20.5ms SsaConstructionTime, 340.9ms SatisfiabilityAnalysisTime, 11559.4ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 4154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...