/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/semi1.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 04:16:11,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 04:16:11,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 04:16:11,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 04:16:11,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 04:16:11,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 04:16:11,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 04:16:11,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 04:16:11,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 04:16:11,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 04:16:11,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 04:16:11,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 04:16:11,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 04:16:11,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 04:16:11,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 04:16:11,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 04:16:11,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 04:16:11,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 04:16:11,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 04:16:11,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 04:16:11,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 04:16:11,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 04:16:11,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 04:16:11,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 04:16:11,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-11 04:16:11,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 04:16:11,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 04:16:11,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 04:16:11,397 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-06-11 04:16:11,413 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 04:16:11,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 04:16:11,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 04:16:11,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 04:16:11,414 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 04:16:11,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 04:16:11,414 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 04:16:11,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 04:16:11,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 04:16:11,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 04:16:11,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 04:16:11,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 04:16:11,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 04:16:11,415 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 04:16:11,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 04:16:11,415 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 04:16:11,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 04:16:11,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 04:16:11,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 04:16:11,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 04:16:11,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 04:16:11,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 04:16:11,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 04:16:11,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 04:16:11,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 04:16:11,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 04:16:11,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 04:16:11,416 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 04:16:11,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 04:16:11,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 04:16:11,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 04:16:11,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 04:16:11,637 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 04:16:11,637 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 04:16:11,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/semi1.wvr.bpl [2021-06-11 04:16:11,638 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/semi1.wvr.bpl' [2021-06-11 04:16:11,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 04:16:11,671 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 04:16:11,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 04:16:11,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 04:16:11,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 04:16:11,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:16:11" (1/1) ... [2021-06-11 04:16:11,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:16:11" (1/1) ... [2021-06-11 04:16:11,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 04:16:11,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 04:16:11,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 04:16:11,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 04:16:11,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:16:11" (1/1) ... [2021-06-11 04:16:11,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:16:11" (1/1) ... [2021-06-11 04:16:11,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:16:11" (1/1) ... [2021-06-11 04:16:11,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:16:11" (1/1) ... [2021-06-11 04:16:11,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:16:11" (1/1) ... [2021-06-11 04:16:11,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:16:11" (1/1) ... [2021-06-11 04:16:11,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:16:11" (1/1) ... [2021-06-11 04:16:11,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 04:16:11,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 04:16:11,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 04:16:11,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 04:16:11,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:16:11" (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 [2021-06-11 04:16:11,754 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-11 04:16:11,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-11 04:16:11,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-11 04:16:11,755 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-11 04:16:11,755 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-11 04:16:11,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-11 04:16:11,755 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 04:16:11,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 04:16:11,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 04:16:11,756 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 04:16:11,873 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 04:16:11,873 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-11 04:16:11,874 INFO L202 PluginConnector]: Adding new model semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 04:16:11 BoogieIcfgContainer [2021-06-11 04:16:11,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 04:16:11,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 04:16:11,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 04:16:11,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 04:16:11,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:16:11" (1/2) ... [2021-06-11 04:16:11,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e39cb24 and model type semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 04:16:11, skipping insertion in model container [2021-06-11 04:16:11,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 04:16:11" (2/2) ... [2021-06-11 04:16:11,879 INFO L111 eAbstractionObserver]: Analyzing ICFG semi1.wvr.bpl [2021-06-11 04:16:11,882 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 04:16:11,885 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 04:16:11,885 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 04:16:11,903 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-11 04:16:11,924 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-11 04:16:11,937 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 04:16:11,937 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 04:16:11,938 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 04:16:11,938 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 04:16:11,938 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 04:16:11,938 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 04:16:11,938 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 04:16:11,938 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 04:16:11,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 15 transitions, 46 flow [2021-06-11 04:16:11,956 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-06-11 04:16:11,956 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-11 04:16:11,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 13 events. 0/13 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-11 04:16:11,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 15 transitions, 46 flow [2021-06-11 04:16:11,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 18 places, 11 transitions, 34 flow [2021-06-11 04:16:11,960 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 04:16:11,969 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 18 places, 11 transitions, 34 flow [2021-06-11 04:16:11,972 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 18 places, 11 transitions, 34 flow [2021-06-11 04:16:11,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 18 places, 11 transitions, 34 flow [2021-06-11 04:16:11,982 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-06-11 04:16:11,982 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-11 04:16:11,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 11 events. 0/11 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-11 04:16:11,983 INFO L151 LiptonReduction]: Number of co-enabled transitions 16 [2021-06-11 04:16:12,072 INFO L163 LiptonReduction]: Checked pairs total: 9 [2021-06-11 04:16:12,072 INFO L165 LiptonReduction]: Total number of compositions: 3 [2021-06-11 04:16:12,073 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 113 [2021-06-11 04:16:12,079 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-06-11 04:16:12,079 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-11 04:16:12,080 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 04:16:12,080 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 04:16:12,080 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 04:16:12,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 04:16:12,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1049824015, now seen corresponding path program 1 times [2021-06-11 04:16:12,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 04:16:12,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636459803] [2021-06-11 04:16:12,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 04:16:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 04:16:12,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:16:12,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 04:16:12,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:16:12,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 04:16:12,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:16:12,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 04:16:12,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 04:16:12,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636459803] [2021-06-11 04:16:12,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 04:16:12,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-11 04:16:12,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631385110] [2021-06-11 04:16:12,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 04:16:12,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 04:16:12,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 04:16:12,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-11 04:16:12,254 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 18 [2021-06-11 04:16:12,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 8 transitions, 28 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-06-11 04:16:12,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 04:16:12,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 18 [2021-06-11 04:16:12,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 04:16:12,285 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-11 04:16:12,286 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-11 04:16:12,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 12 events. 0/12 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-06-11 04:16:12,287 INFO L132 encePairwiseOnDemand]: 14/18 looper letters, 2 selfloop transitions, 2 changer transitions 2/10 dead transitions. [2021-06-11 04:16:12,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 10 transitions, 44 flow [2021-06-11 04:16:12,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 04:16:12,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 04:16:12,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2021-06-11 04:16:12,296 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2021-06-11 04:16:12,296 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 47 transitions. [2021-06-11 04:16:12,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 47 transitions. [2021-06-11 04:16:12,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 04:16:12,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 47 transitions. [2021-06-11 04:16:12,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2021-06-11 04:16:12,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-06-11 04:16:12,304 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-06-11 04:16:12,305 INFO L185 Difference]: Start difference. First operand has 15 places, 8 transitions, 28 flow. Second operand 4 states and 47 transitions. [2021-06-11 04:16:12,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 10 transitions, 44 flow [2021-06-11 04:16:12,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 10 transitions, 36 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-11 04:16:12,309 INFO L241 Difference]: Finished difference. Result has 15 places, 8 transitions, 30 flow [2021-06-11 04:16:12,310 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=30, PETRI_PLACES=15, PETRI_TRANSITIONS=8} [2021-06-11 04:16:12,312 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 0 predicate places. [2021-06-11 04:16:12,312 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 8 transitions, 30 flow [2021-06-11 04:16:12,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-06-11 04:16:12,312 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 04:16:12,312 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 04:16:12,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 04:16:12,313 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 04:16:12,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 04:16:12,314 INFO L82 PathProgramCache]: Analyzing trace with hash -938165425, now seen corresponding path program 2 times [2021-06-11 04:16:12,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 04:16:12,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992051037] [2021-06-11 04:16:12,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 04:16:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 04:16:12,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:16:12,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 04:16:12,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:16:12,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 04:16:12,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:16:12,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 04:16:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 04:16:12,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992051037] [2021-06-11 04:16:12,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 04:16:12,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-11 04:16:12,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185113561] [2021-06-11 04:16:12,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 04:16:12,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 04:16:12,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 04:16:12,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-11 04:16:12,373 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 18 [2021-06-11 04:16:12,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 8 transitions, 30 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-06-11 04:16:12,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 04:16:12,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 18 [2021-06-11 04:16:12,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 04:16:12,383 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-06-11 04:16:12,383 INFO L130 PetriNetUnfolder]: For 3/4 co-relation queries the response was YES. [2021-06-11 04:16:12,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 7 events. 0/7 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-11 04:16:12,383 INFO L132 encePairwiseOnDemand]: 14/18 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2021-06-11 04:16:12,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 7 transitions, 32 flow [2021-06-11 04:16:12,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 04:16:12,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 04:16:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2021-06-11 04:16:12,385 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2021-06-11 04:16:12,386 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 44 transitions. [2021-06-11 04:16:12,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 44 transitions. [2021-06-11 04:16:12,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 04:16:12,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 44 transitions. [2021-06-11 04:16:12,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-06-11 04:16:12,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-06-11 04:16:12,389 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-06-11 04:16:12,390 INFO L185 Difference]: Start difference. First operand has 15 places, 8 transitions, 30 flow. Second operand 4 states and 44 transitions. [2021-06-11 04:16:12,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 7 transitions, 32 flow [2021-06-11 04:16:12,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 7 transitions, 28 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 04:16:12,390 INFO L241 Difference]: Finished difference. Result has 14 places, 0 transitions, 0 flow [2021-06-11 04:16:12,390 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=14, PETRI_TRANSITIONS=0} [2021-06-11 04:16:12,391 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2021-06-11 04:16:12,391 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 0 transitions, 0 flow [2021-06-11 04:16:12,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-06-11 04:16:12,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 04:16:12,394 INFO L202 PluginConnector]: Adding new model semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 04:16:12 BasicIcfg [2021-06-11 04:16:12,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 04:16:12,395 INFO L168 Benchmark]: Toolchain (without parser) took 723.71 ms. Allocated memory is still 352.3 MB. Free memory was 331.9 MB in the beginning and 306.0 MB in the end (delta: 25.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.0 GB. [2021-06-11 04:16:12,395 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 352.3 MB. Free memory is still 332.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 04:16:12,396 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.42 ms. Allocated memory is still 352.3 MB. Free memory was 331.9 MB in the beginning and 330.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 04:16:12,396 INFO L168 Benchmark]: Boogie Preprocessor took 9.25 ms. Allocated memory is still 352.3 MB. Free memory was 330.4 MB in the beginning and 329.6 MB in the end (delta: 823.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 04:16:12,396 INFO L168 Benchmark]: RCFGBuilder took 173.56 ms. Allocated memory is still 352.3 MB. Free memory was 329.5 MB in the beginning and 320.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-06-11 04:16:12,397 INFO L168 Benchmark]: TraceAbstraction took 518.71 ms. Allocated memory is still 352.3 MB. Free memory was 319.6 MB in the beginning and 306.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.0 GB. [2021-06-11 04:16:12,399 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 0.09 ms. Allocated memory is still 352.3 MB. Free memory is still 332.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.42 ms. Allocated memory is still 352.3 MB. Free memory was 331.9 MB in the beginning and 330.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.25 ms. Allocated memory is still 352.3 MB. Free memory was 330.4 MB in the beginning and 329.6 MB in the end (delta: 823.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 173.56 ms. Allocated memory is still 352.3 MB. Free memory was 329.5 MB in the beginning and 320.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 518.71 ms. Allocated memory is still 352.3 MB. Free memory was 319.6 MB in the beginning and 306.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 99.9ms, 18 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 8 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 9 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 18, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - PositiveResult [Line: 36]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 457.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 81.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 139.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=1, InterpolantAutomatonStates: 8, 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: 11.7ms SsaConstructionTime, 24.8ms SatisfiabilityAnalysisTime, 101.2ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...