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/vmt-chc-benchmarks/ctigar/nest-if6.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 01:16:20,717 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 01:16:20,719 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 01:16:20,730 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 01:16:20,730 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 01:16:20,731 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 01:16:20,732 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 01:16:20,734 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 01:16:20,735 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 01:16:20,736 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 01:16:20,736 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 01:16:20,737 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 01:16:20,737 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 01:16:20,739 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 01:16:20,739 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 01:16:20,740 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 01:16:20,742 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 01:16:20,743 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 01:16:20,754 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 01:16:20,755 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 01:16:20,756 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 01:16:20,758 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-25 01:16:20,769 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 01:16:20,769 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 01:16:20,770 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 01:16:20,770 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 01:16:20,771 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 01:16:20,771 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 01:16:20,772 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 01:16:20,793 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 01:16:20,793 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 01:16:20,794 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 01:16:20,794 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 01:16:20,795 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 01:16:20,795 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 01:16:20,795 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 01:16:20,795 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 01:16:20,795 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 01:16:20,796 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 01:16:20,796 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 01:16:20,796 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 01:16:20,796 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 01:16:20,796 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 01:16:20,796 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 01:16:20,797 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 01:16:20,798 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 01:16:20,798 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 01:16:20,798 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 01:16:20,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 01:16:20,799 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 01:16:20,800 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 01:16:20,800 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 01:16:20,853 INFO ]: Repository-Root is: /tmp [2018-06-25 01:16:20,866 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 01:16:20,869 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 01:16:20,870 INFO ]: Initializing SmtParser... [2018-06-25 01:16:20,870 INFO ]: SmtParser initialized [2018-06-25 01:16:20,871 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/nest-if6.c.smt2 [2018-06-25 01:16:20,877 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 [2018-06-25 01:16:20,967 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/nest-if6.c.smt2 unknown [2018-06-25 01:16:21,386 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/nest-if6.c.smt2 [2018-06-25 01:16:21,394 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 01:16:21,399 INFO ]: Walking toolchain with 5 elements. [2018-06-25 01:16:21,400 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 01:16:21,400 INFO ]: Initializing ChcToBoogie... [2018-06-25 01:16:21,400 INFO ]: ChcToBoogie initialized [2018-06-25 01:16:21,403 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 01:16:21" (1/1) ... [2018-06-25 01:16:21,453 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:16:21 Unit [2018-06-25 01:16:21,453 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 01:16:21,454 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 01:16:21,454 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 01:16:21,454 INFO ]: Boogie Preprocessor initialized [2018-06-25 01:16:21,472 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:16:21" (1/1) ... [2018-06-25 01:16:21,472 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:16:21" (1/1) ... [2018-06-25 01:16:21,481 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:16:21" (1/1) ... [2018-06-25 01:16:21,481 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:16:21" (1/1) ... [2018-06-25 01:16:21,509 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:16:21" (1/1) ... [2018-06-25 01:16:21,510 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:16:21" (1/1) ... [2018-06-25 01:16:21,513 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:16:21" (1/1) ... [2018-06-25 01:16:21,517 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 01:16:21,517 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 01:16:21,517 INFO ]: Initializing RCFGBuilder... [2018-06-25 01:16:21,517 INFO ]: RCFGBuilder initialized [2018-06-25 01:16:21,518 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:16:21" (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) [2018-06-25 01:16:21,531 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 01:16:21,531 INFO ]: Found specification of procedure gotoProc [2018-06-25 01:16:21,531 INFO ]: Found implementation of procedure gotoProc [2018-06-25 01:16:21,531 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 01:16:21,531 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 01:16:21,531 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 [2018-06-25 01:16:21,884 INFO ]: Using library mode [2018-06-25 01:16:21,885 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:16:21 BoogieIcfgContainer [2018-06-25 01:16:21,885 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 01:16:21,885 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-25 01:16:21,885 INFO ]: Initializing BlockEncodingV2... [2018-06-25 01:16:21,886 INFO ]: BlockEncodingV2 initialized [2018-06-25 01:16:21,887 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:16:21" (1/1) ... [2018-06-25 01:16:21,902 INFO ]: Initial Icfg 10 locations, 10 edges [2018-06-25 01:16:21,903 INFO ]: Using Remove infeasible edges [2018-06-25 01:16:21,904 INFO ]: Using Maximize final states [2018-06-25 01:16:21,904 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-25 01:16:21,904 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-25 01:16:21,906 INFO ]: Using Remove sink states [2018-06-25 01:16:21,909 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-25 01:16:21,910 INFO ]: Using Use SBE [2018-06-25 01:16:21,917 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:16:21,973 WARN ]: aborting because of expected exponential blowup for input size 70 [2018-06-25 01:16:21,987 WARN ]: aborting because of expected exponential blowup for input size 70 [2018-06-25 01:16:21,987 INFO ]: SBE split 1 edges [2018-06-25 01:16:21,996 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-25 01:16:21,997 INFO ]: 0 new accepting states [2018-06-25 01:16:22,076 INFO ]: Removed 5 edges and 2 locations by large block encoding [2018-06-25 01:16:22,079 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-25 01:16:22,080 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-25 01:16:22,080 INFO ]: 0 new accepting states [2018-06-25 01:16:22,080 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-25 01:16:22,080 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-25 01:16:22,081 INFO ]: Encoded RCFG 6 locations, 7 edges [2018-06-25 01:16:22,081 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 25.06 01:16:22 BasicIcfg [2018-06-25 01:16:22,081 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-25 01:16:22,082 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 01:16:22,082 INFO ]: Initializing TraceAbstraction... [2018-06-25 01:16:22,085 INFO ]: TraceAbstraction initialized [2018-06-25 01:16:22,085 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 01:16:21" (1/4) ... [2018-06-25 01:16:22,086 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349f7695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 01:16:22, skipping insertion in model container [2018-06-25 01:16:22,086 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:16:21" (2/4) ... [2018-06-25 01:16:22,086 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349f7695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 01:16:22, skipping insertion in model container [2018-06-25 01:16:22,086 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:16:21" (3/4) ... [2018-06-25 01:16:22,086 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349f7695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 01:16:22, skipping insertion in model container [2018-06-25 01:16:22,086 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 25.06 01:16:22" (4/4) ... [2018-06-25 01:16:22,087 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-25 01:16:22,095 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 01:16:22,144 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 01:16:22,180 INFO ]: Using default assertion order modulation [2018-06-25 01:16:22,181 INFO ]: Interprodecural is true [2018-06-25 01:16:22,181 INFO ]: Hoare is false [2018-06-25 01:16:22,181 INFO ]: Compute interpolants for FPandBP [2018-06-25 01:16:22,181 INFO ]: Backedges is TWOTRACK [2018-06-25 01:16:22,181 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 01:16:22,181 INFO ]: Difference is false [2018-06-25 01:16:22,181 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 01:16:22,181 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 01:16:22,192 INFO ]: Start isEmpty. Operand 6 states. [2018-06-25 01:16:22,208 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-25 01:16:22,208 INFO ]: Found error trace [2018-06-25 01:16:22,208 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-25 01:16:22,209 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:16:22,213 INFO ]: Analyzing trace with hash 35465027, now seen corresponding path program 1 times [2018-06-25 01:16:22,214 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:16:22,214 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:16:22,253 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:16:22,253 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:16:22,253 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:16:22,315 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:16:22,386 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:16:22,388 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 01:16:22,388 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 01:16:22,389 INFO ]: Interpolant automaton has 3 states [2018-06-25 01:16:22,400 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 01:16:22,400 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 01:16:22,403 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-25 01:16:22,467 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:16:22,467 INFO ]: Finished difference Result 7 states and 8 transitions. [2018-06-25 01:16:22,468 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 01:16:22,469 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-25 01:16:22,469 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:16:22,474 INFO ]: With dead ends: 7 [2018-06-25 01:16:22,475 INFO ]: Without dead ends: 7 [2018-06-25 01:16:22,476 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 [2018-06-25 01:16:22,489 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-25 01:16:22,512 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-25 01:16:22,514 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-25 01:16:22,518 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-06-25 01:16:22,519 INFO ]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2018-06-25 01:16:22,519 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:16:22,519 INFO ]: Abstraction has 7 states and 8 transitions. [2018-06-25 01:16:22,519 INFO ]: Interpolant automaton has 3 states. [2018-06-25 01:16:22,520 INFO ]: Start isEmpty. Operand 7 states and 8 transitions. [2018-06-25 01:16:22,520 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 01:16:22,520 INFO ]: Found error trace [2018-06-25 01:16:22,520 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 01:16:22,520 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:16:22,520 INFO ]: Analyzing trace with hash 1099063309, now seen corresponding path program 1 times [2018-06-25 01:16:22,520 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:16:22,520 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:16:22,521 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:16:22,521 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:16:22,521 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:16:22,635 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:16:23,001 WARN ]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 01:16:23,002 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:16:23,002 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:16:23,002 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 [2018-06-25 01:16:23,010 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:16:23,087 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:16:23,098 INFO ]: Computing forward predicates... [2018-06-25 01:16:23,904 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:16:23,939 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:16:23,939 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 01:16:23,940 INFO ]: Interpolant automaton has 5 states [2018-06-25 01:16:23,940 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 01:16:23,940 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 01:16:23,940 INFO ]: Start difference. First operand 7 states and 8 transitions. Second operand 5 states. [2018-06-25 01:16:24,163 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:16:24,163 INFO ]: Finished difference Result 9 states and 10 transitions. [2018-06-25 01:16:24,163 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 01:16:24,163 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-25 01:16:24,163 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:16:24,163 INFO ]: With dead ends: 9 [2018-06-25 01:16:24,163 INFO ]: Without dead ends: 9 [2018-06-25 01:16:24,164 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-25 01:16:24,164 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 01:16:24,165 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 8. [2018-06-25 01:16:24,165 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-25 01:16:24,165 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2018-06-25 01:16:24,165 INFO ]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2018-06-25 01:16:24,165 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:16:24,165 INFO ]: Abstraction has 8 states and 9 transitions. [2018-06-25 01:16:24,165 INFO ]: Interpolant automaton has 5 states. [2018-06-25 01:16:24,165 INFO ]: Start isEmpty. Operand 8 states and 9 transitions. [2018-06-25 01:16:24,166 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 01:16:24,166 INFO ]: Found error trace [2018-06-25 01:16:24,166 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-25 01:16:24,166 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:16:24,166 INFO ]: Analyzing trace with hash -289128317, now seen corresponding path program 2 times [2018-06-25 01:16:24,166 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:16:24,166 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:16:24,168 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:16:24,168 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:16:24,168 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:16:24,276 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:16:24,659 WARN ]: Spent 168.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 6 [2018-06-25 01:16:24,908 WARN ]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 01:16:24,908 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:16:24,909 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:16:24,909 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) [2018-06-25 01:16:24,925 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 01:16:25,057 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 01:16:25,057 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:16:25,061 INFO ]: Computing forward predicates... [2018-06-25 01:16:28,112 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:16:28,146 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:16:28,154 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-25 01:16:28,154 INFO ]: Interpolant automaton has 6 states [2018-06-25 01:16:28,155 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 01:16:28,155 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-25 01:16:28,155 INFO ]: Start difference. First operand 8 states and 9 transitions. Second operand 6 states. [2018-06-25 01:16:28,305 WARN ]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-06-25 01:16:29,259 WARN ]: Spent 817.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-06-25 01:16:29,342 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:16:29,342 INFO ]: Finished difference Result 10 states and 11 transitions. [2018-06-25 01:16:29,342 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 01:16:29,342 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-25 01:16:29,343 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:16:29,343 INFO ]: With dead ends: 10 [2018-06-25 01:16:29,343 INFO ]: Without dead ends: 10 [2018-06-25 01:16:29,343 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-25 01:16:29,343 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 01:16:29,344 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-06-25 01:16:29,344 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 01:16:29,344 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-06-25 01:16:29,344 INFO ]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2018-06-25 01:16:29,345 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:16:29,345 INFO ]: Abstraction has 9 states and 10 transitions. [2018-06-25 01:16:29,345 INFO ]: Interpolant automaton has 6 states. [2018-06-25 01:16:29,345 INFO ]: Start isEmpty. Operand 9 states and 10 transitions. [2018-06-25 01:16:29,345 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 01:16:29,345 INFO ]: Found error trace [2018-06-25 01:16:29,345 INFO ]: trace histogram [3, 1, 1, 1, 1, 1] [2018-06-25 01:16:29,345 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:16:29,345 INFO ]: Analyzing trace with hash -373395763, now seen corresponding path program 3 times [2018-06-25 01:16:29,345 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:16:29,345 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:16:29,346 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:16:29,346 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 01:16:29,346 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:16:29,428 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:16:29,818 WARN ]: Spent 103.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 1 [2018-06-25 01:16:30,179 WARN ]: Spent 293.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 6 [2018-06-25 01:16:30,212 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:16:30,212 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:16:30,212 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 [2018-06-25 01:16:30,217 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 01:16:30,321 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 01:16:30,321 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:16:30,324 INFO ]: Computing forward predicates... [2018-06-25 01:16:30,874 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 11 [2018-06-25 01:16:32,569 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:36,766 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:16:36,793 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:16:36,794 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-25 01:16:36,794 INFO ]: Interpolant automaton has 8 states [2018-06-25 01:16:36,794 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 01:16:36,794 INFO ]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-06-25 01:16:36,794 INFO ]: Start difference. First operand 9 states and 10 transitions. Second operand 8 states. [2018-06-25 01:16:36,951 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:16:36,951 INFO ]: Finished difference Result 12 states and 13 transitions. [2018-06-25 01:16:36,951 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-25 01:16:36,952 INFO ]: Start accepts. Automaton has 8 states. Word has length 8 [2018-06-25 01:16:36,952 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:16:36,952 INFO ]: With dead ends: 12 [2018-06-25 01:16:36,952 INFO ]: Without dead ends: 12 [2018-06-25 01:16:36,952 INFO ]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-06-25 01:16:36,952 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-25 01:16:36,954 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-06-25 01:16:36,954 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 01:16:36,954 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-06-25 01:16:36,954 INFO ]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-06-25 01:16:36,954 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:16:36,955 INFO ]: Abstraction has 11 states and 12 transitions. [2018-06-25 01:16:36,955 INFO ]: Interpolant automaton has 8 states. [2018-06-25 01:16:36,955 INFO ]: Start isEmpty. Operand 11 states and 12 transitions. [2018-06-25 01:16:36,955 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 01:16:36,955 INFO ]: Found error trace [2018-06-25 01:16:36,955 INFO ]: trace histogram [5, 1, 1, 1, 1, 1] [2018-06-25 01:16:36,955 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:16:36,955 INFO ]: Analyzing trace with hash 1932643725, now seen corresponding path program 4 times [2018-06-25 01:16:36,955 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:16:36,955 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:16:36,956 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:16:36,956 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 01:16:36,956 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:16:37,049 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:16:37,562 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:16:37,562 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:16:37,562 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 [2018-06-25 01:16:37,571 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-25 01:16:37,689 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-25 01:16:37,689 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:16:37,695 INFO ]: Computing forward predicates... [2018-06-25 01:16:50,516 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:50,528 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 01:16:50,651 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 01:16:50,719 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:16:50,776 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 01:16:51,039 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:51,045 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:51,052 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:51,056 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:16:51,167 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:16:51,202 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 01:16:51,743 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:16:51,758 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 01:16:51,826 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:16:52,007 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:52,010 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:52,012 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:52,018 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:52,051 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:16:52,103 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:52,131 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:52,136 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 01:16:52,336 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:52,338 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:52,339 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:52,341 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:52,353 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:16:52,366 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:16:52,378 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:16:52,389 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:52,423 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 01:16:52,535 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:52,552 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:52,566 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:52,679 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:16:52,688 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 01:16:52,750 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:52,859 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:52,907 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:16:52,927 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:16:53,023 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:16:53,114 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:53,116 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:53,118 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:53,123 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:53,125 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:16:53,339 WARN ]: expecting exponential blowup for input size 8 Received shutdown request... [2018-06-25 01:17:28,452 INFO ]: Timeout while computing interpolants [2018-06-25 01:17:28,654 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 01:17:28,654 WARN ]: Verification canceled [2018-06-25 01:17:28,656 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-25 01:17:28,657 WARN ]: Timeout [2018-06-25 01:17:28,657 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 01:17:28 BasicIcfg [2018-06-25 01:17:28,657 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 01:17:28,658 INFO ]: Toolchain (without parser) took 67263.71 ms. Allocated memory was 306.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 245.8 MB in the beginning and 1.2 GB in the end (delta: -919.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-25 01:17:28,659 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.2 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 01:17:28,659 INFO ]: ChcToBoogie took 53.45 ms. Allocated memory is still 306.2 MB. Free memory was 244.8 MB in the beginning and 242.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:17:28,659 INFO ]: Boogie Preprocessor took 62.93 ms. Allocated memory is still 306.2 MB. Free memory was 242.8 MB in the beginning and 240.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:17:28,660 INFO ]: RCFGBuilder took 367.77 ms. Allocated memory is still 306.2 MB. Free memory was 240.8 MB in the beginning and 222.5 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 3.6 GB. [2018-06-25 01:17:28,660 INFO ]: BlockEncodingV2 took 195.86 ms. Allocated memory is still 306.2 MB. Free memory was 222.5 MB in the beginning and 211.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:17:28,661 INFO ]: TraceAbstraction took 66575.27 ms. Allocated memory was 306.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 211.6 MB in the beginning and 1.2 GB in the end (delta: -953.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-25 01:17:28,667 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 10 edges - StatisticsResult: Encoded RCFG 6 locations, 7 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 306.2 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 53.45 ms. Allocated memory is still 306.2 MB. Free memory was 244.8 MB in the beginning and 242.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 62.93 ms. Allocated memory is still 306.2 MB. Free memory was 242.8 MB in the beginning and 240.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 367.77 ms. Allocated memory is still 306.2 MB. Free memory was 240.8 MB in the beginning and 222.5 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 195.86 ms. Allocated memory is still 306.2 MB. Free memory was 222.5 MB in the beginning and 211.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 66575.27 ms. Allocated memory was 306.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 211.6 MB in the beginning and 1.2 GB in the end (delta: -953.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 11 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 86045 quantified variables from 17 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. TIMEOUT Result, 66.4s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 0 SDslu, 30 SDs, 0 SdLazy, 29 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=4, 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 734 SizeOfPredicates, 18 NumberOfNonLiveVariables, 786 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/nest-if6.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-25_01-17-28-680.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/nest-if6.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-25_01-17-28-680.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/nest-if6.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-25_01-17-28-680.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/nest-if6.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_01-17-28-680.csv Completed graceful shutdown