/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 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 02:42:43,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 02:42:43,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 02:42:43,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-12 02:42:43,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-12 02:42:43,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-12 02:42:43,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-12 02:42:43,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-12 02:42:43,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-12 02:42:43,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-12 02:42:43,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-12 02:42:43,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-12 02:42:43,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-12 02:42:43,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-12 02:42:43,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-12 02:42:43,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-12 02:42:43,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-12 02:42:43,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-12 02:42:43,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-12 02:42:43,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-12 02:42:43,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-12 02:42:43,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-12 02:42:43,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-12 02:42:43,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-12 02:42:43,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-12 02:42:43,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-12 02:42:43,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-12 02:42:43,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-12 02:42:43,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-12 02:42:43,965 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 02:42:43,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 02:42:43,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 02:42:43,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 02:42:43,967 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 02:42:43,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 02:42:43,967 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 02:42:43,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 02:42:43,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 02:42:43,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 02:42:43,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 02:42:43,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 02:42:43,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 02:42:43,968 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 02:42:43,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 02:42:43,969 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 02:42:43,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 02:42:43,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 02:42:43,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 02:42:43,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 02:42:43,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 02:42:43,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 02:42:43,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 02:42:43,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 02:42:43,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 02:42:43,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 02:42:43,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 02:42:43,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-12 02:42:43,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 02:42:44,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 02:42:44,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 02:42:44,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 02:42:44,283 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-12 02:42:44,284 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-12 02:42:44,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/semi1.wvr.bpl [2021-03-12 02:42:44,285 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/semi1.wvr.bpl' [2021-03-12 02:42:44,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 02:42:44,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-12 02:42:44,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 02:42:44,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 02:42:44,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 02:42:44,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:42:44" (1/1) ... [2021-03-12 02:42:44,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:42:44" (1/1) ... [2021-03-12 02:42:44,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 02:42:44,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 02:42:44,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 02:42:44,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 02:42:44,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:42:44" (1/1) ... [2021-03-12 02:42:44,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:42:44" (1/1) ... [2021-03-12 02:42:44,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:42:44" (1/1) ... [2021-03-12 02:42:44,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:42:44" (1/1) ... [2021-03-12 02:42:44,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:42:44" (1/1) ... [2021-03-12 02:42:44,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:42:44" (1/1) ... [2021-03-12 02:42:44,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:42:44" (1/1) ... [2021-03-12 02:42:44,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 02:42:44,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 02:42:44,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 02:42:44,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 02:42:44,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:42:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 02:42:44,414 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-12 02:42:44,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-12 02:42:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-12 02:42:44,414 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-12 02:42:44,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-12 02:42:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-12 02:42:44,415 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-12 02:42:44,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 02:42:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 02:42:44,416 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-12 02:42:44,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 02:42:44,532 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-12 02:42:44,533 INFO L202 PluginConnector]: Adding new model semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 02:42:44 BoogieIcfgContainer [2021-03-12 02:42:44,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 02:42:44,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 02:42:44,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 02:42:44,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 02:42:44,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:42:44" (1/2) ... [2021-03-12 02:42:44,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455c43c5 and model type semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 02:42:44, skipping insertion in model container [2021-03-12 02:42:44,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 02:42:44" (2/2) ... [2021-03-12 02:42:44,539 INFO L111 eAbstractionObserver]: Analyzing ICFG semi1.wvr.bpl [2021-03-12 02:42:44,544 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 02:42:44,547 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 02:42:44,547 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 02:42:44,572 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-12 02:42:44,587 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-12 02:42:44,605 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 02:42:44,605 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-12 02:42:44,605 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 02:42:44,605 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 02:42:44,605 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 02:42:44,605 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 02:42:44,606 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 02:42:44,606 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-12 02:42:44,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 15 transitions, 46 flow [2021-03-12 02:42:44,627 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-12 02:42:44,627 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-12 02:42:44,629 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. [2021-03-12 02:42:44,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 15 transitions, 46 flow [2021-03-12 02:42:44,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 18 places, 11 transitions, 34 flow [2021-03-12 02:42:44,638 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-12 02:42:44,646 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 18 places, 11 transitions, 34 flow [2021-03-12 02:42:44,648 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 18 places, 11 transitions, 34 flow [2021-03-12 02:42:44,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 18 places, 11 transitions, 34 flow [2021-03-12 02:42:44,666 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-12 02:42:44,666 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-12 02:42:44,666 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. [2021-03-12 02:42:44,667 INFO L116 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-12 02:42:44,804 INFO L131 LiptonReduction]: Checked pairs total: 17 [2021-03-12 02:42:44,804 INFO L133 LiptonReduction]: Total number of compositions: 3 [2021-03-12 02:42:44,805 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 170 [2021-03-12 02:42:44,818 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-12 02:42:44,818 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-12 02:42:44,819 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:42:44,819 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:42:44,819 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:42:44,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:42:44,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1049794225, now seen corresponding path program 1 times [2021-03-12 02:42:44,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:42:44,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409596139] [2021-03-12 02:42:44,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:42:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:42:44,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:44,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:42:44,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:44,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 02:42:44,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:44,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:42:44,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:42:44,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409596139] [2021-03-12 02:42:44,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:42:44,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-12 02:42:44,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390265482] [2021-03-12 02:42:44,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-12 02:42:44,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:42:44,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-12 02:42:44,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-12 02:42:44,968 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 18 [2021-03-12 02:42:44,970 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) [2021-03-12 02:42:44,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:42:44,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 18 [2021-03-12 02:42:44,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:42:44,996 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-12 02:42:44,996 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-12 02:42:44,996 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. [2021-03-12 02:42:44,997 INFO L132 encePairwiseOnDemand]: 14/18 looper letters, 2 selfloop transitions, 2 changer transitions 2/10 dead transitions. [2021-03-12 02:42:44,997 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 10 transitions, 44 flow [2021-03-12 02:42:44,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 02:42:45,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-12 02:42:45,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2021-03-12 02:42:45,006 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2021-03-12 02:42:45,006 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 47 transitions. [2021-03-12 02:42:45,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 47 transitions. [2021-03-12 02:42:45,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:42:45,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 47 transitions. [2021-03-12 02:42:45,010 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) [2021-03-12 02:42:45,013 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) [2021-03-12 02:42:45,014 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) [2021-03-12 02:42:45,015 INFO L185 Difference]: Start difference. First operand has 15 places, 8 transitions, 28 flow. Second operand 4 states and 47 transitions. [2021-03-12 02:42:45,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 10 transitions, 44 flow [2021-03-12 02:42:45,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 10 transitions, 36 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-12 02:42:45,020 INFO L241 Difference]: Finished difference. Result has 15 places, 8 transitions, 30 flow [2021-03-12 02:42:45,021 INFO L318 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} [2021-03-12 02:42:45,022 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 0 predicate places. [2021-03-12 02:42:45,022 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 8 transitions, 30 flow [2021-03-12 02:42:45,022 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) [2021-03-12 02:42:45,022 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:42:45,022 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:42:45,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-12 02:42:45,023 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:42:45,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:42:45,024 INFO L82 PathProgramCache]: Analyzing trace with hash -909536275, now seen corresponding path program 2 times [2021-03-12 02:42:45,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:42:45,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953974253] [2021-03-12 02:42:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:42:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:42:45,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:45,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:42:45,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:45,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 02:42:45,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:45,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:42:45,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:42:45,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953974253] [2021-03-12 02:42:45,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:42:45,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-12 02:42:45,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263773498] [2021-03-12 02:42:45,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-12 02:42:45,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:42:45,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-12 02:42:45,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-12 02:42:45,094 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 18 [2021-03-12 02:42:45,094 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) [2021-03-12 02:42:45,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:42:45,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 18 [2021-03-12 02:42:45,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:42:45,107 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-12 02:42:45,107 INFO L130 PetriNetUnfolder]: For 3/4 co-relation queries the response was YES. [2021-03-12 02:42:45,107 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. [2021-03-12 02:42:45,108 INFO L132 encePairwiseOnDemand]: 14/18 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2021-03-12 02:42:45,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 7 transitions, 32 flow [2021-03-12 02:42:45,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 02:42:45,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-12 02:42:45,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2021-03-12 02:42:45,109 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2021-03-12 02:42:45,109 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 44 transitions. [2021-03-12 02:42:45,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 44 transitions. [2021-03-12 02:42:45,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:42:45,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 44 transitions. [2021-03-12 02:42:45,112 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) [2021-03-12 02:42:45,115 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) [2021-03-12 02:42:45,116 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) [2021-03-12 02:42:45,117 INFO L185 Difference]: Start difference. First operand has 15 places, 8 transitions, 30 flow. Second operand 4 states and 44 transitions. [2021-03-12 02:42:45,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 7 transitions, 32 flow [2021-03-12 02:42:45,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 7 transitions, 28 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 02:42:45,118 INFO L241 Difference]: Finished difference. Result has 14 places, 0 transitions, 0 flow [2021-03-12 02:42:45,118 INFO L318 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} [2021-03-12 02:42:45,119 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2021-03-12 02:42:45,119 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 0 transitions, 0 flow [2021-03-12 02:42:45,119 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) [2021-03-12 02:42:45,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-12 02:42:45,122 INFO L202 PluginConnector]: Adding new model semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.03 02:42:45 BasicIcfg [2021-03-12 02:42:45,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-12 02:42:45,124 INFO L168 Benchmark]: Toolchain (without parser) took 805.10 ms. Allocated memory is still 350.2 MB. Free memory was 330.3 MB in the beginning and 305.5 MB in the end (delta: 24.8 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.0 GB. [2021-03-12 02:42:45,124 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 350.2 MB. Free memory was 331.4 MB in the beginning and 331.3 MB in the end (delta: 126.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 02:42:45,125 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.39 ms. Allocated memory is still 350.2 MB. Free memory was 329.8 MB in the beginning and 328.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 02:42:45,125 INFO L168 Benchmark]: Boogie Preprocessor took 13.25 ms. Allocated memory is still 350.2 MB. Free memory was 328.3 MB in the beginning and 327.6 MB in the end (delta: 742.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 02:42:45,126 INFO L168 Benchmark]: RCFGBuilder took 171.32 ms. Allocated memory is still 350.2 MB. Free memory was 327.5 MB in the beginning and 318.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. [2021-03-12 02:42:45,127 INFO L168 Benchmark]: TraceAbstraction took 588.05 ms. Allocated memory is still 350.2 MB. Free memory was 317.8 MB in the beginning and 305.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.0 GB. [2021-03-12 02:42:45,135 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 350.2 MB. Free memory was 331.4 MB in the beginning and 331.3 MB in the end (delta: 126.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.39 ms. Allocated memory is still 350.2 MB. Free memory was 329.8 MB in the beginning and 328.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.25 ms. Allocated memory is still 350.2 MB. Free memory was 328.3 MB in the beginning and 327.6 MB in the end (delta: 742.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 171.32 ms. Allocated memory is still 350.2 MB. Free memory was 327.5 MB in the beginning and 318.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 588.05 ms. Allocated memory is still 350.2 MB. Free memory was 317.8 MB in the beginning and 305.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 156.1ms, 18 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 8 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 17 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 13, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 13, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 38, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 16, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 13, unknown conditional: 0, unknown unconditional: 13] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 518.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 83.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 209.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.7ms 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: 5.4ms SsaConstructionTime, 26.0ms SatisfiabilityAnalysisTime, 91.4ms 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...