java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/reve/016b-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:05:08,860 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:05:08,862 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:05:08,873 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:05:08,873 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:05:08,874 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:05:08,875 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:05:08,877 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:05:08,879 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:05:08,880 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:05:08,880 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:05:08,880 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:05:08,881 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:05:08,882 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:05:08,883 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:05:08,884 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:05:08,885 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:05:08,887 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:05:08,888 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:05:08,889 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:05:08,890 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:05:08,893 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:05:08,893 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:05:08,893 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:05:08,894 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:05:08,895 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:05:08,895 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:05:08,896 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:05:08,897 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:05:08,897 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:05:08,898 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:05:08,899 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:05:08,899 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:05:08,900 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:05:08,900 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:05:08,901 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:05:08,918 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:05:08,919 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:05:08,919 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:05:08,919 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:05:08,920 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:05:08,920 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:05:08,920 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:05:08,920 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:05:08,921 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:05:08,921 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:05:08,921 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:05:08,921 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:05:08,921 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:05:08,922 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:05:08,922 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:05:08,922 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:05:08,922 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:05:08,922 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:05:08,922 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:05:08,923 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:05:08,923 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:05:08,924 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:05:08,924 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:05:08,969 INFO ]: Repository-Root is: /tmp [2018-06-24 21:05:08,987 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:05:08,996 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:05:08,997 INFO ]: Initializing SmtParser... [2018-06-24 21:05:08,997 INFO ]: SmtParser initialized [2018-06-24 21:05:08,998 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/016b-horn.smt2 [2018-06-24 21:05:08,999 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 21:05:09,080 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/016b-horn.smt2 unknown [2018-06-24 21:05:09,240 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/016b-horn.smt2 [2018-06-24 21:05:09,244 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:05:09,251 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:05:09,251 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:05:09,251 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:05:09,251 INFO ]: ChcToBoogie initialized [2018-06-24 21:05:09,257 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:05:09" (1/1) ... [2018-06-24 21:05:09,308 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:09 Unit [2018-06-24 21:05:09,308 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:05:09,309 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:05:09,309 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:05:09,309 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:05:09,330 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:09" (1/1) ... [2018-06-24 21:05:09,330 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:09" (1/1) ... [2018-06-24 21:05:09,336 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:09" (1/1) ... [2018-06-24 21:05:09,336 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:09" (1/1) ... [2018-06-24 21:05:09,338 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:09" (1/1) ... [2018-06-24 21:05:09,340 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:09" (1/1) ... [2018-06-24 21:05:09,341 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:09" (1/1) ... [2018-06-24 21:05:09,342 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:05:09,343 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:05:09,343 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:05:09,343 INFO ]: RCFGBuilder initialized [2018-06-24 21:05:09,346 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:09" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 21:05:09,357 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:05:09,358 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:05:09,358 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:05:09,358 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:05:09,358 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:05:09,358 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:05:09,556 INFO ]: Using library mode [2018-06-24 21:05:09,557 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:05:09 BoogieIcfgContainer [2018-06-24 21:05:09,557 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:05:09,557 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:05:09,557 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:05:09,558 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:05:09,559 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:05:09" (1/1) ... [2018-06-24 21:05:09,594 INFO ]: Initial Icfg 10 locations, 12 edges [2018-06-24 21:05:09,595 INFO ]: Using Remove infeasible edges [2018-06-24 21:05:09,596 INFO ]: Using Maximize final states [2018-06-24 21:05:09,596 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:05:09,596 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:05:09,600 INFO ]: Using Remove sink states [2018-06-24 21:05:09,601 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:05:09,601 INFO ]: Using Use SBE [2018-06-24 21:05:09,609 INFO ]: SBE split 0 edges [2018-06-24 21:05:09,615 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 21:05:09,616 INFO ]: 0 new accepting states [2018-06-24 21:05:09,652 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-24 21:05:09,654 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:05:09,659 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:05:09,659 INFO ]: 0 new accepting states [2018-06-24 21:05:09,659 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:05:09,659 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:05:09,659 INFO ]: Encoded RCFG 6 locations, 8 edges [2018-06-24 21:05:09,661 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:05:09 BasicIcfg [2018-06-24 21:05:09,661 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:05:09,662 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:05:09,662 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:05:09,664 INFO ]: TraceAbstraction initialized [2018-06-24 21:05:09,664 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:05:09" (1/4) ... [2018-06-24 21:05:09,665 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ffad7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:05:09, skipping insertion in model container [2018-06-24 21:05:09,665 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:09" (2/4) ... [2018-06-24 21:05:09,666 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ffad7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:05:09, skipping insertion in model container [2018-06-24 21:05:09,666 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:05:09" (3/4) ... [2018-06-24 21:05:09,666 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ffad7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:05:09, skipping insertion in model container [2018-06-24 21:05:09,666 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:05:09" (4/4) ... [2018-06-24 21:05:09,667 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:05:09,674 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:05:09,680 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:05:09,731 INFO ]: Using default assertion order modulation [2018-06-24 21:05:09,731 INFO ]: Interprodecural is true [2018-06-24 21:05:09,731 INFO ]: Hoare is false [2018-06-24 21:05:09,731 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:05:09,731 INFO ]: Backedges is TWOTRACK [2018-06-24 21:05:09,731 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:05:09,731 INFO ]: Difference is false [2018-06-24 21:05:09,731 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:05:09,731 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:05:09,740 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 21:05:09,749 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:05:09,749 INFO ]: Found error trace [2018-06-24 21:05:09,750 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:05:09,750 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:05:09,756 INFO ]: Analyzing trace with hash 37311172, now seen corresponding path program 1 times [2018-06-24 21:05:09,758 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:05:09,758 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:05:09,804 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:09,804 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:05:09,804 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:09,853 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:05:09,916 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:05:09,918 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:05:09,918 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:05:09,919 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:05:09,931 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:05:09,932 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:05:09,934 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 21:05:10,050 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:05:10,050 INFO ]: Finished difference Result 7 states and 11 transitions. [2018-06-24 21:05:10,051 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:05:10,052 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:05:10,052 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:05:10,062 INFO ]: With dead ends: 7 [2018-06-24 21:05:10,063 INFO ]: Without dead ends: 7 [2018-06-24 21:05:10,067 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:05:10,083 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:05:10,112 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:05:10,114 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:05:10,114 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-24 21:05:10,115 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 5 [2018-06-24 21:05:10,115 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:05:10,115 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-24 21:05:10,115 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:05:10,115 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-24 21:05:10,116 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:05:10,116 INFO ]: Found error trace [2018-06-24 21:05:10,116 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:05:10,116 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:05:10,116 INFO ]: Analyzing trace with hash 1156290923, now seen corresponding path program 1 times [2018-06-24 21:05:10,116 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:05:10,116 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:05:10,118 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:10,118 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:05:10,118 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:10,138 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:05:10,385 WARN ]: Spent 135.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-06-24 21:05:10,386 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:05:10,386 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:05:10,386 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:05:10,394 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:05:10,434 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:05:10,442 INFO ]: Computing forward predicates... [2018-06-24 21:05:10,605 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:05:10,634 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:05:10,634 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2018-06-24 21:05:10,634 INFO ]: Interpolant automaton has 6 states [2018-06-24 21:05:10,634 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 21:05:10,634 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:05:10,635 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 6 states. [2018-06-24 21:05:10,947 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:05:10,947 INFO ]: Finished difference Result 10 states and 19 transitions. [2018-06-24 21:05:10,947 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-24 21:05:10,947 INFO ]: Start accepts. Automaton has 6 states. Word has length 6 [2018-06-24 21:05:10,947 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:05:10,948 INFO ]: With dead ends: 10 [2018-06-24 21:05:10,948 INFO ]: Without dead ends: 10 [2018-06-24 21:05:10,949 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-06-24 21:05:10,949 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-24 21:05:10,950 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-06-24 21:05:10,950 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 21:05:10,951 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 16 transitions. [2018-06-24 21:05:10,951 INFO ]: Start accepts. Automaton has 9 states and 16 transitions. Word has length 6 [2018-06-24 21:05:10,951 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:05:10,951 INFO ]: Abstraction has 9 states and 16 transitions. [2018-06-24 21:05:10,951 INFO ]: Interpolant automaton has 6 states. [2018-06-24 21:05:10,951 INFO ]: Start isEmpty. Operand 9 states and 16 transitions. [2018-06-24 21:05:10,951 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:05:10,951 INFO ]: Found error trace [2018-06-24 21:05:10,951 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:05:10,951 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:05:10,952 INFO ]: Analyzing trace with hash 1156350505, now seen corresponding path program 1 times [2018-06-24 21:05:10,952 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:05:10,952 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:05:10,953 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:10,953 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:05:10,953 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:10,965 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:05:11,099 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:05:11,100 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:05:11,100 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:05:11,107 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:05:11,147 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:05:11,149 INFO ]: Computing forward predicates... [2018-06-24 21:05:11,312 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:05:11,334 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:05:11,334 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-06-24 21:05:11,334 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:05:11,334 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:05:11,334 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:05:11,334 INFO ]: Start difference. First operand 9 states and 16 transitions. Second operand 5 states. [2018-06-24 21:05:11,513 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:05:11,513 INFO ]: Finished difference Result 13 states and 26 transitions. [2018-06-24 21:05:11,513 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:05:11,513 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 21:05:11,513 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:05:11,514 INFO ]: With dead ends: 13 [2018-06-24 21:05:11,514 INFO ]: Without dead ends: 13 [2018-06-24 21:05:11,514 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:05:11,514 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-24 21:05:11,516 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 10. [2018-06-24 21:05:11,516 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-24 21:05:11,516 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2018-06-24 21:05:11,516 INFO ]: Start accepts. Automaton has 10 states and 18 transitions. Word has length 6 [2018-06-24 21:05:11,516 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:05:11,516 INFO ]: Abstraction has 10 states and 18 transitions. [2018-06-24 21:05:11,516 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:05:11,517 INFO ]: Start isEmpty. Operand 10 states and 18 transitions. [2018-06-24 21:05:11,517 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 21:05:11,517 INFO ]: Found error trace [2018-06-24 21:05:11,517 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-06-24 21:05:11,517 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:05:11,517 INFO ]: Analyzing trace with hash -1213279061, now seen corresponding path program 1 times [2018-06-24 21:05:11,517 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:05:11,517 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:05:11,518 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:11,518 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:05:11,518 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:11,550 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:05:11,625 INFO ]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:05:11,625 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:05:11,625 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:05:11,631 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:05:11,677 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:05:11,679 INFO ]: Computing forward predicates... [2018-06-24 21:05:12,146 INFO ]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:05:12,166 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:05:12,166 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2018-06-24 21:05:12,166 INFO ]: Interpolant automaton has 9 states [2018-06-24 21:05:12,166 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-24 21:05:12,166 INFO ]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-06-24 21:05:12,166 INFO ]: Start difference. First operand 10 states and 18 transitions. Second operand 9 states. [2018-06-24 21:05:12,406 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:05:12,406 INFO ]: Finished difference Result 17 states and 33 transitions. [2018-06-24 21:05:12,406 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-24 21:05:12,406 INFO ]: Start accepts. Automaton has 9 states. Word has length 8 [2018-06-24 21:05:12,406 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:05:12,406 INFO ]: With dead ends: 17 [2018-06-24 21:05:12,406 INFO ]: Without dead ends: 10 [2018-06-24 21:05:12,407 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2018-06-24 21:05:12,407 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-24 21:05:12,408 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-06-24 21:05:12,408 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 21:05:12,408 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2018-06-24 21:05:12,408 INFO ]: Start accepts. Automaton has 9 states and 13 transitions. Word has length 8 [2018-06-24 21:05:12,408 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:05:12,409 INFO ]: Abstraction has 9 states and 13 transitions. [2018-06-24 21:05:12,409 INFO ]: Interpolant automaton has 9 states. [2018-06-24 21:05:12,409 INFO ]: Start isEmpty. Operand 9 states and 13 transitions. [2018-06-24 21:05:12,409 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 21:05:12,409 INFO ]: Found error trace [2018-06-24 21:05:12,409 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-06-24 21:05:12,409 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:05:12,409 INFO ]: Analyzing trace with hash -1156020759, now seen corresponding path program 1 times [2018-06-24 21:05:12,409 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:05:12,409 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:05:12,410 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:12,410 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:05:12,410 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:12,432 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:05:12,504 INFO ]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:05:12,504 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:05:12,504 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:05:12,511 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:05:12,540 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:05:12,543 INFO ]: Computing forward predicates... [2018-06-24 21:05:12,765 INFO ]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:05:12,788 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:05:12,788 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-24 21:05:12,788 INFO ]: Interpolant automaton has 8 states [2018-06-24 21:05:12,788 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 21:05:12,788 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:05:12,789 INFO ]: Start difference. First operand 9 states and 13 transitions. Second operand 8 states. [2018-06-24 21:05:13,009 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:05:13,009 INFO ]: Finished difference Result 11 states and 20 transitions. [2018-06-24 21:05:13,009 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-24 21:05:13,009 INFO ]: Start accepts. Automaton has 8 states. Word has length 8 [2018-06-24 21:05:13,010 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:05:13,010 INFO ]: With dead ends: 11 [2018-06-24 21:05:13,010 INFO ]: Without dead ends: 0 [2018-06-24 21:05:13,010 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2018-06-24 21:05:13,010 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:05:13,010 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:05:13,010 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:05:13,010 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:05:13,010 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-06-24 21:05:13,010 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:05:13,010 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:05:13,010 INFO ]: Interpolant automaton has 8 states. [2018-06-24 21:05:13,010 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:05:13,010 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:05:13,012 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:05:13,013 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:05:13 BasicIcfg [2018-06-24 21:05:13,014 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:05:13,014 INFO ]: Toolchain (without parser) took 3769.67 ms. Allocated memory was 300.4 MB in the beginning and 323.0 MB in the end (delta: 22.5 MB). Free memory was 254.8 MB in the beginning and 200.8 MB in the end (delta: 54.0 MB). Peak memory consumption was 76.6 MB. Max. memory is 3.6 GB. [2018-06-24 21:05:13,015 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 300.4 MB. Free memory is still 263.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:05:13,015 INFO ]: ChcToBoogie took 57.27 ms. Allocated memory is still 300.4 MB. Free memory was 254.8 MB in the beginning and 252.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:05:13,016 INFO ]: Boogie Preprocessor took 33.33 ms. Allocated memory is still 300.4 MB. Free memory was 252.8 MB in the beginning and 250.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:05:13,016 INFO ]: RCFGBuilder took 213.94 ms. Allocated memory is still 300.4 MB. Free memory was 250.7 MB in the beginning and 242.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:05:13,017 INFO ]: BlockEncodingV2 took 103.63 ms. Allocated memory is still 300.4 MB. Free memory was 242.7 MB in the beginning and 239.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:05:13,017 INFO ]: TraceAbstraction took 3352.00 ms. Allocated memory was 300.4 MB in the beginning and 323.0 MB in the end (delta: 22.5 MB). Free memory was 239.7 MB in the beginning and 200.8 MB in the end (delta: 39.0 MB). Peak memory consumption was 61.5 MB. Max. memory is 3.6 GB. [2018-06-24 21:05:13,021 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 12 edges - StatisticsResult: Encoded RCFG 6 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 300.4 MB. Free memory is still 263.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 57.27 ms. Allocated memory is still 300.4 MB. Free memory was 254.8 MB in the beginning and 252.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 33.33 ms. Allocated memory is still 300.4 MB. Free memory was 252.8 MB in the beginning and 250.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 213.94 ms. Allocated memory is still 300.4 MB. Free memory was 250.7 MB in the beginning and 242.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 103.63 ms. Allocated memory is still 300.4 MB. Free memory was 242.7 MB in the beginning and 239.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3352.00 ms. Allocated memory was 300.4 MB in the beginning and 323.0 MB in the end (delta: 22.5 MB). Free memory was 239.7 MB in the beginning and 200.8 MB in the end (delta: 39.0 MB). Peak memory consumption was 61.5 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : 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 2 procedures, 6 locations, 1 error locations. SAFE Result, 3.2s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 SDtfs, 2 SDslu, 42 SDs, 0 SdLazy, 138 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 1488 SizeOfPredicates, 16 NumberOfNonLiveVariables, 452 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 10/28 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/016b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-05-13-032.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/016b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-05-13-032.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/016b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-05-13-032.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/016b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-05-13-032.csv Received shutdown request...