/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/file-item-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 05:07:53,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 05:07:53,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 05:07:53,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 05:07:53,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 05:07:53,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 05:07:53,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 05:07:53,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 05:07:53,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 05:07:53,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 05:07:53,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 05:07:53,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 05:07:53,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 05:07:53,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 05:07:53,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 05:07:53,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 05:07:53,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 05:07:53,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 05:07:53,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 05:07:53,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 05:07:53,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 05:07:53,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 05:07:53,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 05:07:53,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 05:07:53,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-29 05:07:53,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-29 05:07:53,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-29 05:07:53,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-29 05:07:53,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-29 05:07:53,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-29 05:07:53,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-29 05:07:53,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-29 05:07:53,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-29 05:07:53,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-29 05:07:53,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-29 05:07:53,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-29 05:07:53,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-29 05:07:53,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-29 05:07:53,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 05:07:53,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 05:07:53,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 05:07:53,292 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 05:07:53,342 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 05:07:53,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 05:07:53,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 05:07:53,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 05:07:53,347 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 05:07:53,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 05:07:53,348 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 05:07:53,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 05:07:53,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 05:07:53,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 05:07:53,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 05:07:53,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 05:07:53,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 05:07:53,350 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 05:07:53,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 05:07:53,351 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 05:07:53,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 05:07:53,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 05:07:53,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 05:07:53,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 05:07:53,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 05:07:53,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 05:07:53,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 05:07:53,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 05:07:53,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 05:07:53,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 05:07:53,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 05:07:53,354 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 05:07:53,354 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 05:07:53,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 05:07:53,354 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 05:07:53,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 05:07:53,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 05:07:53,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 05:07:53,778 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-29 05:07:53,783 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-29 05:07:53,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-subst.wvr.bpl [2021-04-29 05:07:53,785 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-subst.wvr.bpl' [2021-04-29 05:07:53,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 05:07:53,885 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-29 05:07:53,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 05:07:53,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 05:07:53,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 05:07:53,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:53" (1/1) ... [2021-04-29 05:07:53,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:53" (1/1) ... [2021-04-29 05:07:53,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 05:07:53,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 05:07:53,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 05:07:53,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 05:07:53,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:53" (1/1) ... [2021-04-29 05:07:53,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:53" (1/1) ... [2021-04-29 05:07:53,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:53" (1/1) ... [2021-04-29 05:07:53,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:53" (1/1) ... [2021-04-29 05:07:53,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:53" (1/1) ... [2021-04-29 05:07:53,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:53" (1/1) ... [2021-04-29 05:07:53,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:53" (1/1) ... [2021-04-29 05:07:53,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 05:07:53,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 05:07:53,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 05:07:53,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 05:07:53,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:53" (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 05:07:54,055 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-04-29 05:07:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-04-29 05:07:54,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-04-29 05:07:54,056 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-04-29 05:07:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-04-29 05:07:54,056 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-04-29 05:07:54,056 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-29 05:07:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 05:07:54,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 05:07:54,057 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-04-29 05:07:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-04-29 05:07:54,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-04-29 05:07:54,058 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 05:07:54,246 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 05:07:54,246 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-29 05:07:54,248 INFO L202 PluginConnector]: Adding new model file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 05:07:54 BoogieIcfgContainer [2021-04-29 05:07:54,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 05:07:54,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 05:07:54,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 05:07:54,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 05:07:54,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:53" (1/2) ... [2021-04-29 05:07:54,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2b5d84 and model type file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 05:07:54, skipping insertion in model container [2021-04-29 05:07:54,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 05:07:54" (2/2) ... [2021-04-29 05:07:54,257 INFO L111 eAbstractionObserver]: Analyzing ICFG file-item-subst.wvr.bpl [2021-04-29 05:07:54,263 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 05:07:54,268 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 05:07:54,269 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 05:07:54,320 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-04-29 05:07:54,345 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-29 05:07:54,374 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 05:07:54,374 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 05:07:54,374 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 05:07:54,374 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 05:07:54,374 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 05:07:54,374 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 05:07:54,375 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 05:07:54,375 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 05:07:54,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-04-29 05:07:54,416 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-04-29 05:07:54,416 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-29 05:07:54,418 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 13 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 05:07:54,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 19 transitions, 62 flow [2021-04-29 05:07:54,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 14 transitions, 46 flow [2021-04-29 05:07:54,426 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:54,465 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 14 transitions, 46 flow [2021-04-29 05:07:54,473 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 14 transitions, 46 flow [2021-04-29 05:07:54,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 14 transitions, 46 flow [2021-04-29 05:07:54,499 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-04-29 05:07:54,499 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-29 05:07:54,500 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 10 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 05:07:54,505 INFO L146 LiptonReduction]: Number of co-enabled transitions 48 [2021-04-29 05:07:54,813 INFO L158 LiptonReduction]: Checked pairs total: 18 [2021-04-29 05:07:54,813 INFO L160 LiptonReduction]: Total number of compositions: 4 [2021-04-29 05:07:54,816 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 391 [2021-04-29 05:07:54,831 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-04-29 05:07:54,832 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-29 05:07:54,832 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:54,833 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:54,833 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:54,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:54,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1489009177, now seen corresponding path program 1 times [2021-04-29 05:07:54,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:54,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962748151] [2021-04-29 05:07:54,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:55,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:55,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:55,528 INFO L142 QuantifierPusher]: treesize reduction 347, result has 24.2 percent of original size [2021-04-29 05:07:55,538 INFO L147 QuantifierPusher]: treesize reduction 14, result has 87.4 percent of original size 97 [2021-04-29 05:07:55,858 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2021-04-29 05:07:55,945 INFO L142 QuantifierPusher]: treesize reduction 342, result has 30.8 percent of original size [2021-04-29 05:07:55,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-04-29 05:07:56,182 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-04-29 05:07:56,226 INFO L142 QuantifierPusher]: treesize reduction 225, result has 41.1 percent of original size [2021-04-29 05:07:56,235 INFO L147 QuantifierPusher]: treesize reduction 22, result has 86.0 percent of original size 135 [2021-04-29 05:07:56,360 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 05:07:56,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962748151] [2021-04-29 05:07:56,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:56,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:07:56,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286146248] [2021-04-29 05:07:56,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:07:56,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:56,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:07:56,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:07:56,423 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:07:56,426 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 05:07:56,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:56,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:07:56,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:56,652 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-29 05:07:56,853 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-04-29 05:07:56,906 INFO L129 PetriNetUnfolder]: 16/86 cut-off events. [2021-04-29 05:07:56,907 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-04-29 05:07:56,909 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 444 event pairs, 4 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 152. Up to 32 conditions per place. [2021-04-29 05:07:56,912 INFO L132 encePairwiseOnDemand]: 15/23 looper letters, 5 selfloop transitions, 2 changer transitions 9/22 dead transitions. [2021-04-29 05:07:56,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 94 flow [2021-04-29 05:07:56,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:07:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:07:56,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2021-04-29 05:07:56,931 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7652173913043478 [2021-04-29 05:07:56,932 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 88 transitions. [2021-04-29 05:07:56,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 88 transitions. [2021-04-29 05:07:56,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:56,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 88 transitions. [2021-04-29 05:07:56,942 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 05:07:56,950 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 05:07:56,950 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 05:07:56,953 INFO L185 Difference]: Start difference. First operand has 24 places, 14 transitions, 46 flow. Second operand 5 states and 88 transitions. [2021-04-29 05:07:56,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 94 flow [2021-04-29 05:07:56,960 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 05:07:56,964 INFO L241 Difference]: Finished difference. Result has 25 places, 11 transitions, 41 flow [2021-04-29 05:07:56,967 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 05:07:56,969 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2021-04-29 05:07:56,969 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:56,969 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 11 transitions, 41 flow [2021-04-29 05:07:56,970 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 11 transitions, 41 flow [2021-04-29 05:07:56,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 11 transitions, 41 flow [2021-04-29 05:07:56,977 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-04-29 05:07:56,978 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-29 05:07:56,978 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 27 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 05:07:56,979 INFO L146 LiptonReduction]: Number of co-enabled transitions 16 [2021-04-29 05:07:56,981 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:56,981 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:56,981 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-04-29 05:07:56,983 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 11 transitions, 41 flow [2021-04-29 05:07:56,983 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 05:07:56,984 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:56,984 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:56,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 05:07:56,984 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:56,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:56,986 INFO L82 PathProgramCache]: Analyzing trace with hash -730943027, now seen corresponding path program 2 times [2021-04-29 05:07:56,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:56,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974372613] [2021-04-29 05:07:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:57,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:57,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:57,223 INFO L142 QuantifierPusher]: treesize reduction 198, result has 24.1 percent of original size [2021-04-29 05:07:57,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-29 05:07:57,309 INFO L142 QuantifierPusher]: treesize reduction 170, result has 49.9 percent of original size [2021-04-29 05:07:57,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-04-29 05:07:57,519 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2021-04-29 05:07:57,530 INFO L142 QuantifierPusher]: treesize reduction 233, result has 23.9 percent of original size [2021-04-29 05:07:57,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-29 05:07:57,604 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 05:07:57,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974372613] [2021-04-29 05:07:57,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:57,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:07:57,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46194578] [2021-04-29 05:07:57,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:07:57,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:57,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:07:57,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:07:57,611 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:07:57,612 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 05:07:57,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:57,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:07:57,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:57,788 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-29 05:07:57,985 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-04-29 05:07:58,007 INFO L129 PetriNetUnfolder]: 2/29 cut-off events. [2021-04-29 05:07:58,007 INFO L130 PetriNetUnfolder]: For 24/26 co-relation queries the response was YES. [2021-04-29 05:07:58,008 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 88 event pairs, 0 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 58. Up to 7 conditions per place. [2021-04-29 05:07:58,009 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 5 selfloop transitions, 2 changer transitions 3/16 dead transitions. [2021-04-29 05:07:58,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 16 transitions, 85 flow [2021-04-29 05:07:58,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:07:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:07:58,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-04-29 05:07:58,011 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2021-04-29 05:07:58,012 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-04-29 05:07:58,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-04-29 05:07:58,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:58,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-04-29 05:07:58,014 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 05:07:58,016 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 05:07:58,016 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 05:07:58,016 INFO L185 Difference]: Start difference. First operand has 20 places, 11 transitions, 41 flow. Second operand 5 states and 79 transitions. [2021-04-29 05:07:58,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 16 transitions, 85 flow [2021-04-29 05:07:58,018 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 05:07:58,019 INFO L241 Difference]: Finished difference. Result has 25 places, 11 transitions, 51 flow [2021-04-29 05:07:58,019 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 05:07:58,020 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2021-04-29 05:07:58,021 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:58,021 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 11 transitions, 51 flow [2021-04-29 05:07:58,022 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 11 transitions, 51 flow [2021-04-29 05:07:58,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 11 transitions, 51 flow [2021-04-29 05:07:58,028 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-04-29 05:07:58,029 INFO L130 PetriNetUnfolder]: For 13/14 co-relation queries the response was YES. [2021-04-29 05:07:58,029 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 5. Compared 24 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 05:07:58,029 INFO L146 LiptonReduction]: Number of co-enabled transitions 14 [2021-04-29 05:07:58,031 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:58,032 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:58,032 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-04-29 05:07:58,033 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 11 transitions, 51 flow [2021-04-29 05:07:58,034 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 05:07:58,034 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:58,034 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:58,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 05:07:58,034 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:58,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:58,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1072456223, now seen corresponding path program 3 times [2021-04-29 05:07:58,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:58,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264524198] [2021-04-29 05:07:58,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:58,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:58,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:58,168 INFO L142 QuantifierPusher]: treesize reduction 247, result has 13.0 percent of original size [2021-04-29 05:07:58,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-29 05:07:58,233 INFO L142 QuantifierPusher]: treesize reduction 206, result has 36.6 percent of original size [2021-04-29 05:07:58,238 INFO L147 QuantifierPusher]: treesize reduction 9, result has 92.4 percent of original size 110 [2021-04-29 05:07:58,431 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-04-29 05:07:58,440 INFO L142 QuantifierPusher]: treesize reduction 154, result has 45.6 percent of original size [2021-04-29 05:07:58,445 INFO L147 QuantifierPusher]: treesize reduction 25, result has 80.6 percent of original size 104 [2021-04-29 05:07:58,515 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 05:07:58,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264524198] [2021-04-29 05:07:58,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:58,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:07:58,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625993149] [2021-04-29 05:07:58,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:07:58,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:58,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:07:58,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:07:58,520 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:07:58,520 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 05:07:58,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:58,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:07:58,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:58,712 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-04-29 05:07:58,930 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-29 05:07:58,953 INFO L129 PetriNetUnfolder]: 1/23 cut-off events. [2021-04-29 05:07:58,953 INFO L130 PetriNetUnfolder]: For 42/44 co-relation queries the response was YES. [2021-04-29 05:07:58,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 23 events. 1/23 cut-off events. For 42/44 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 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 05:07:58,954 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 5 selfloop transitions, 3 changer transitions 1/15 dead transitions. [2021-04-29 05:07:58,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 15 transitions, 93 flow [2021-04-29 05:07:58,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:07:58,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:07:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-04-29 05:07:58,957 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2021-04-29 05:07:58,958 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-04-29 05:07:58,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-04-29 05:07:58,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:58,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-04-29 05:07:58,960 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 05:07:58,961 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 05:07:58,962 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 05:07:58,962 INFO L185 Difference]: Start difference. First operand has 24 places, 11 transitions, 51 flow. Second operand 5 states and 79 transitions. [2021-04-29 05:07:58,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 15 transitions, 93 flow [2021-04-29 05:07:58,964 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 05:07:58,965 INFO L241 Difference]: Finished difference. Result has 27 places, 12 transitions, 62 flow [2021-04-29 05:07:58,966 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 05:07:58,966 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2021-04-29 05:07:58,967 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:58,967 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 12 transitions, 62 flow [2021-04-29 05:07:58,968 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 12 transitions, 62 flow [2021-04-29 05:07:58,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 12 transitions, 62 flow [2021-04-29 05:07:58,975 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-04-29 05:07:58,976 INFO L130 PetriNetUnfolder]: For 19/21 co-relation queries the response was YES. [2021-04-29 05:07:58,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 18 events. 0/18 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 28 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 05:07:58,977 INFO L146 LiptonReduction]: Number of co-enabled transitions 14 [2021-04-29 05:07:58,978 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:58,979 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:58,979 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-04-29 05:07:58,981 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 12 transitions, 62 flow [2021-04-29 05:07:58,982 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 05:07:58,982 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:58,982 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:58,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 05:07:58,983 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:58,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:58,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1007773359, now seen corresponding path program 4 times [2021-04-29 05:07:58,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:58,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169032301] [2021-04-29 05:07:58,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:59,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:59,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:59,170 INFO L142 QuantifierPusher]: treesize reduction 197, result has 22.1 percent of original size [2021-04-29 05:07:59,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-29 05:07:59,278 INFO L142 QuantifierPusher]: treesize reduction 243, result has 38.6 percent of original size [2021-04-29 05:07:59,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-04-29 05:07:59,559 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2021-04-29 05:07:59,572 INFO L142 QuantifierPusher]: treesize reduction 327, result has 29.1 percent of original size [2021-04-29 05:07:59,575 INFO L147 QuantifierPusher]: treesize reduction 10, result has 92.5 percent of original size 124 [2021-04-29 05:07:59,734 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 20 [2021-04-29 05:07:59,737 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 05:07:59,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169032301] [2021-04-29 05:07:59,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:59,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:07:59,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946185997] [2021-04-29 05:07:59,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:07:59,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:59,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:07:59,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:07:59,741 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:07:59,742 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 05:07:59,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:59,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:07:59,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:59,933 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-04-29 05:08:00,175 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-29 05:08:00,187 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2021-04-29 05:08:00,187 INFO L130 PetriNetUnfolder]: For 44/50 co-relation queries the response was YES. [2021-04-29 05:08:00,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 19 events. 1/19 cut-off events. For 44/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 32 event pairs, 1 based on Foata normal form. 3/22 useless extension candidates. Maximal degree in co-relation 54. Up to 5 conditions per place. [2021-04-29 05:08:00,188 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 3 selfloop transitions, 1 changer transitions 4/14 dead transitions. [2021-04-29 05:08:00,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 14 transitions, 92 flow [2021-04-29 05:08:00,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:08:00,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:08:00,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2021-04-29 05:08:00,190 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6782608695652174 [2021-04-29 05:08:00,191 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 78 transitions. [2021-04-29 05:08:00,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 78 transitions. [2021-04-29 05:08:00,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:08:00,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 78 transitions. [2021-04-29 05:08:00,193 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 05:08:00,194 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 05:08:00,194 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 05:08:00,194 INFO L185 Difference]: Start difference. First operand has 26 places, 12 transitions, 62 flow. Second operand 5 states and 78 transitions. [2021-04-29 05:08:00,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 14 transitions, 92 flow [2021-04-29 05:08:00,196 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 05:08:00,197 INFO L241 Difference]: Finished difference. Result has 30 places, 10 transitions, 49 flow [2021-04-29 05:08:00,198 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 05:08:00,198 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2021-04-29 05:08:00,198 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:08:00,199 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 10 transitions, 49 flow [2021-04-29 05:08:00,199 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 10 transitions, 49 flow [2021-04-29 05:08:00,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 10 transitions, 49 flow [2021-04-29 05:08:00,204 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-04-29 05:08:00,205 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2021-04-29 05:08:00,205 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 2 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 05:08:00,205 INFO L146 LiptonReduction]: Number of co-enabled transitions 4 [2021-04-29 05:08:00,206 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:08:00,207 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:08:00,207 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-04-29 05:08:00,208 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 10 transitions, 49 flow [2021-04-29 05:08:00,209 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 05:08:00,209 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:08:00,209 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:08:00,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 05:08:00,210 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:08:00,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:08:00,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1514033617, now seen corresponding path program 5 times [2021-04-29 05:08:00,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:08:00,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267787300] [2021-04-29 05:08:00,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:08:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:08:00,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:08:00,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:08:00,319 INFO L142 QuantifierPusher]: treesize reduction 251, result has 25.5 percent of original size [2021-04-29 05:08:00,322 INFO L147 QuantifierPusher]: treesize reduction 14, result has 83.7 percent of original size 72 [2021-04-29 05:08:00,456 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-04-29 05:08:00,472 INFO L142 QuantifierPusher]: treesize reduction 445, result has 31.3 percent of original size [2021-04-29 05:08:00,481 INFO L147 QuantifierPusher]: treesize reduction 35, result has 82.8 percent of original size 168 [2021-04-29 05:08:00,758 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2021-04-29 05:08:00,782 INFO L142 QuantifierPusher]: treesize reduction 299, result has 32.0 percent of original size [2021-04-29 05:08:00,790 INFO L147 QuantifierPusher]: treesize reduction 16, result has 88.7 percent of original size 125 [2021-04-29 05:08:00,923 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 15 [2021-04-29 05:08:00,925 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 05:08:00,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267787300] [2021-04-29 05:08:00,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:08:00,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:08:00,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660032267] [2021-04-29 05:08:00,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:08:00,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:08:00,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:08:00,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:08:00,929 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:08:00,930 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 05:08:00,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:08:00,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:08:00,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:08:01,130 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-29 05:08:01,368 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-04-29 05:08:01,383 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-04-29 05:08:01,383 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-04-29 05:08:01,383 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 13 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 05:08:01,384 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 3 selfloop transitions, 1 changer transitions 2/12 dead transitions. [2021-04-29 05:08:01,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 12 transitions, 82 flow [2021-04-29 05:08:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:08:01,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:08:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2021-04-29 05:08:01,387 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6695652173913044 [2021-04-29 05:08:01,387 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 77 transitions. [2021-04-29 05:08:01,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 77 transitions. [2021-04-29 05:08:01,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:08:01,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 77 transitions. [2021-04-29 05:08:01,389 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 05:08:01,390 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 05:08:01,390 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 05:08:01,390 INFO L185 Difference]: Start difference. First operand has 27 places, 10 transitions, 49 flow. Second operand 5 states and 77 transitions. [2021-04-29 05:08:01,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 12 transitions, 82 flow [2021-04-29 05:08:01,392 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 05:08:01,393 INFO L241 Difference]: Finished difference. Result has 23 places, 10 transitions, 35 flow [2021-04-29 05:08:01,394 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 05:08:01,394 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2021-04-29 05:08:01,394 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:08:01,395 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 10 transitions, 35 flow [2021-04-29 05:08:01,395 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 10 transitions, 35 flow [2021-04-29 05:08:01,395 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 10 transitions, 35 flow [2021-04-29 05:08:01,399 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-04-29 05:08:01,400 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-29 05:08:01,400 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 2 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 05:08:01,400 INFO L146 LiptonReduction]: Number of co-enabled transitions 2 [2021-04-29 05:08:01,401 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:08:01,402 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:08:01,402 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-04-29 05:08:01,403 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 10 transitions, 35 flow [2021-04-29 05:08:01,404 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 05:08:01,404 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:08:01,404 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:08:01,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 05:08:01,405 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:08:01,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:08:01,406 INFO L82 PathProgramCache]: Analyzing trace with hash -669430591, now seen corresponding path program 6 times [2021-04-29 05:08:01,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:08:01,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782271818] [2021-04-29 05:08:01,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:08:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:08:01,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:08:01,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:08:01,507 INFO L142 QuantifierPusher]: treesize reduction 73, result has 52.9 percent of original size [2021-04-29 05:08:01,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-04-29 05:08:01,762 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-04-29 05:08:01,775 INFO L142 QuantifierPusher]: treesize reduction 142, result has 52.2 percent of original size [2021-04-29 05:08:01,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-04-29 05:08:02,120 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2021-04-29 05:08:02,135 INFO L142 QuantifierPusher]: treesize reduction 126, result has 42.5 percent of original size [2021-04-29 05:08:02,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-04-29 05:08:02,272 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 20 [2021-04-29 05:08:02,276 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 05:08:02,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782271818] [2021-04-29 05:08:02,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:08:02,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:08:02,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380074470] [2021-04-29 05:08:02,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:08:02,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:08:02,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:08:02,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:08:02,287 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:08:02,287 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 05:08:02,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:08:02,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:08:02,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:08:02,881 WARN L205 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2021-04-29 05:08:03,558 WARN L205 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2021-04-29 05:08:03,562 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-04-29 05:08:03,562 INFO L130 PetriNetUnfolder]: For 9/11 co-relation queries the response was YES. [2021-04-29 05:08:03,562 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 05:08:03,562 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2021-04-29 05:08:03,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 10 transitions, 44 flow [2021-04-29 05:08:03,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:08:03,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:08:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2021-04-29 05:08:03,564 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2021-04-29 05:08:03,564 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 75 transitions. [2021-04-29 05:08:03,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 75 transitions. [2021-04-29 05:08:03,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:08:03,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 75 transitions. [2021-04-29 05:08:03,565 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 05:08:03,566 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 05:08:03,567 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 05:08:03,567 INFO L185 Difference]: Start difference. First operand has 21 places, 10 transitions, 35 flow. Second operand 5 states and 75 transitions. [2021-04-29 05:08:03,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 10 transitions, 44 flow [2021-04-29 05:08:03,567 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 05:08:03,568 INFO L241 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2021-04-29 05:08:03,568 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 05:08:03,569 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, -2 predicate places. [2021-04-29 05:08:03,569 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:08:03,569 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 0 transitions, 0 flow [2021-04-29 05:08:03,569 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 0 transitions, 0 flow [2021-04-29 05:08:03,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 05:08:03,570 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 05:08:03,570 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 05:08:03,570 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 05:08:03,570 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 05:08:03,571 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:08:03,571 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:08:03,571 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-29 05:08:03,572 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 05:08:03,572 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 05:08:03,573 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 05:08:03,579 INFO L202 PluginConnector]: Adding new model file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 05:08:03 BasicIcfg [2021-04-29 05:08:03,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 05:08:03,581 INFO L168 Benchmark]: Toolchain (without parser) took 9749.60 ms. Allocated memory was 331.4 MB in the beginning and 404.8 MB in the end (delta: 73.4 MB). Free memory was 300.3 MB in the beginning and 153.1 MB in the end (delta: 147.2 MB). Peak memory consumption was 221.1 MB. Max. memory is 16.0 GB. [2021-04-29 05:08:03,582 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.75 ms. Allocated memory is still 331.4 MB. Free memory was 301.4 MB in the beginning and 301.3 MB in the end (delta: 83.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 05:08:03,582 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.86 ms. Allocated memory is still 331.4 MB. Free memory was 314.4 MB in the beginning and 313.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 05:08:03,583 INFO L168 Benchmark]: Boogie Preprocessor took 19.58 ms. Allocated memory is still 331.4 MB. Free memory was 313.0 MB in the beginning and 312.0 MB in the end (delta: 907.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 05:08:03,584 INFO L168 Benchmark]: RCFGBuilder took 303.41 ms. Allocated memory is still 331.4 MB. Free memory was 311.9 MB in the beginning and 308.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-04-29 05:08:03,585 INFO L168 Benchmark]: TraceAbstraction took 9329.61 ms. Allocated memory was 331.4 MB in the beginning and 404.8 MB in the end (delta: 73.4 MB). Free memory was 307.7 MB in the beginning and 153.1 MB in the end (delta: 154.6 MB). Peak memory consumption was 230.9 MB. Max. memory is 16.0 GB. [2021-04-29 05:08:03,587 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 0.75 ms. Allocated memory is still 331.4 MB. Free memory was 301.4 MB in the beginning and 301.3 MB in the end (delta: 83.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 36.86 ms. Allocated memory is still 331.4 MB. Free memory was 314.4 MB in the beginning and 313.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.58 ms. Allocated memory is still 331.4 MB. Free memory was 313.0 MB in the beginning and 312.0 MB in the end (delta: 907.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 303.41 ms. Allocated memory is still 331.4 MB. Free memory was 311.9 MB in the beginning and 308.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 9329.61 ms. Allocated memory was 331.4 MB in the beginning and 404.8 MB in the end (delta: 73.4 MB). Free memory was 307.7 MB in the beginning and 153.1 MB in the end (delta: 154.6 MB). Peak memory consumption was 230.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 339.7ms, 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: 10.5ms, 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: 9.9ms, 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: 11.0ms, 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: 7.6ms, 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: 7.1ms, 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: 1.4ms, 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: 50]: 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: 7.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 9205.6ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 3623.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 448.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 32 SDslu, 0 SDs, 0 SdLazy, 110 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 212.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6198.5ms 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: 21.2ms SsaConstructionTime, 218.9ms SatisfiabilityAnalysisTime, 4560.5ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 2010 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...