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/hopv/lia/mochi/sum3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:24:02,547 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:24:02,550 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:24:02,563 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:24:02,563 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:24:02,564 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:24:02,565 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:24:02,570 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:24:02,571 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:24:02,573 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:24:02,574 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:24:02,574 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:24:02,575 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:24:02,576 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:24:02,579 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:24:02,580 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:24:02,582 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:24:02,592 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:24:02,593 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:24:02,594 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:24:02,595 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:24:02,599 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:24:02,600 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:24:02,600 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:24:02,602 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:24:02,603 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:24:02,603 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:24:02,604 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:24:02,605 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:24:02,605 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:24:02,605 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:24:02,610 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:24:02,610 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:24:02,611 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:24:02,611 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:24:02,611 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:24:02,633 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:24:02,633 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:24:02,633 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:24:02,634 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:24:02,637 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:24:02,637 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:24:02,638 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:24:02,638 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:24:02,638 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:24:02,638 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:24:02,638 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:24:02,638 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:24:02,639 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:24:02,639 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:24:02,639 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:24:02,639 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:24:02,639 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:24:02,639 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:24:02,640 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:24:02,640 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:24:02,640 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:24:02,642 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:24:02,643 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:24:02,681 INFO ]: Repository-Root is: /tmp [2018-06-24 21:24:02,701 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:24:02,707 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:24:02,708 INFO ]: Initializing SmtParser... [2018-06-24 21:24:02,708 INFO ]: SmtParser initialized [2018-06-24 21:24:02,709 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/sum3.smt2 [2018-06-24 21:24:02,710 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 21:24:02,801 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/sum3.smt2 unknown [2018-06-24 21:24:02,948 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/sum3.smt2 [2018-06-24 21:24:02,956 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:24:02,963 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:24:02,963 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:24:02,963 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:24:02,964 INFO ]: ChcToBoogie initialized [2018-06-24 21:24:02,967 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:24:02" (1/1) ... [2018-06-24 21:24:03,021 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:03 Unit [2018-06-24 21:24:03,021 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:24:03,022 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:24:03,022 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:24:03,022 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:24:03,042 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:03" (1/1) ... [2018-06-24 21:24:03,042 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:03" (1/1) ... [2018-06-24 21:24:03,048 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:03" (1/1) ... [2018-06-24 21:24:03,048 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:03" (1/1) ... [2018-06-24 21:24:03,050 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:03" (1/1) ... [2018-06-24 21:24:03,052 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:03" (1/1) ... [2018-06-24 21:24:03,053 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:03" (1/1) ... [2018-06-24 21:24:03,054 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:24:03,055 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:24:03,056 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:24:03,056 INFO ]: RCFGBuilder initialized [2018-06-24 21:24:03,057 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:03" (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 21:24:03,074 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:24:03,074 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:24:03,074 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:24:03,074 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:24:03,074 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:24:03,074 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 21:24:03,292 INFO ]: Using library mode [2018-06-24 21:24:03,292 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:24:03 BoogieIcfgContainer [2018-06-24 21:24:03,293 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:24:03,293 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:24:03,293 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:24:03,293 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:24:03,294 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:24:03" (1/1) ... [2018-06-24 21:24:03,308 INFO ]: Initial Icfg 10 locations, 11 edges [2018-06-24 21:24:03,309 INFO ]: Using Remove infeasible edges [2018-06-24 21:24:03,310 INFO ]: Using Maximize final states [2018-06-24 21:24:03,310 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:24:03,310 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:24:03,312 INFO ]: Using Remove sink states [2018-06-24 21:24:03,313 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:24:03,313 INFO ]: Using Use SBE [2018-06-24 21:24:03,319 INFO ]: SBE split 0 edges [2018-06-24 21:24:03,325 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:24:03,326 INFO ]: 0 new accepting states [2018-06-24 21:24:03,353 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-24 21:24:03,355 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:24:03,358 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:24:03,358 INFO ]: 0 new accepting states [2018-06-24 21:24:03,358 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:24:03,359 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:24:03,359 INFO ]: Encoded RCFG 6 locations, 6 edges [2018-06-24 21:24:03,359 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:24:03 BasicIcfg [2018-06-24 21:24:03,359 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:24:03,360 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:24:03,360 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:24:03,363 INFO ]: TraceAbstraction initialized [2018-06-24 21:24:03,363 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:24:02" (1/4) ... [2018-06-24 21:24:03,364 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c72015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:24:03, skipping insertion in model container [2018-06-24 21:24:03,364 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:03" (2/4) ... [2018-06-24 21:24:03,364 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c72015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:24:03, skipping insertion in model container [2018-06-24 21:24:03,364 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:24:03" (3/4) ... [2018-06-24 21:24:03,365 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c72015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:24:03, skipping insertion in model container [2018-06-24 21:24:03,365 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:24:03" (4/4) ... [2018-06-24 21:24:03,366 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:24:03,376 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:24:03,384 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:24:03,419 INFO ]: Using default assertion order modulation [2018-06-24 21:24:03,420 INFO ]: Interprodecural is true [2018-06-24 21:24:03,420 INFO ]: Hoare is false [2018-06-24 21:24:03,420 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:24:03,420 INFO ]: Backedges is TWOTRACK [2018-06-24 21:24:03,420 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:24:03,420 INFO ]: Difference is false [2018-06-24 21:24:03,420 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:24:03,420 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:24:03,435 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 21:24:03,446 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:24:03,446 INFO ]: Found error trace [2018-06-24 21:24:03,447 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:24:03,447 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:24:03,452 INFO ]: Analyzing trace with hash 35433345, now seen corresponding path program 1 times [2018-06-24 21:24:03,454 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:24:03,454 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:24:03,486 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:03,486 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:24:03,486 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:03,530 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:24:03,613 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:24:03,615 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:24:03,615 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:24:03,617 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:24:03,643 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:24:03,644 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:24:03,646 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 21:24:03,732 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:24:03,732 INFO ]: Finished difference Result 7 states and 7 transitions. [2018-06-24 21:24:03,732 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:24:03,733 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:24:03,734 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:24:03,742 INFO ]: With dead ends: 7 [2018-06-24 21:24:03,742 INFO ]: Without dead ends: 7 [2018-06-24 21:24:03,743 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 21:24:03,760 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:24:03,783 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:24:03,784 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:24:03,784 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-06-24 21:24:03,785 INFO ]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-06-24 21:24:03,785 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:24:03,785 INFO ]: Abstraction has 7 states and 7 transitions. [2018-06-24 21:24:03,785 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:24:03,785 INFO ]: Start isEmpty. Operand 7 states and 7 transitions. [2018-06-24 21:24:03,786 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:24:03,786 INFO ]: Found error trace [2018-06-24 21:24:03,786 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:24:03,786 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:24:03,786 INFO ]: Analyzing trace with hash 1098137897, now seen corresponding path program 1 times [2018-06-24 21:24:03,786 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:24:03,786 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:24:03,787 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:03,787 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:24:03,787 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:03,799 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:24:03,876 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:24:03,876 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:24:03,876 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 21:24:03,884 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:24:03,914 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:24:03,921 INFO ]: Computing forward predicates... [2018-06-24 21:24:03,996 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:24:04,016 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:24:04,016 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-24 21:24:04,017 INFO ]: Interpolant automaton has 4 states [2018-06-24 21:24:04,017 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 21:24:04,017 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:24:04,017 INFO ]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-06-24 21:24:04,070 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:24:04,070 INFO ]: Finished difference Result 8 states and 8 transitions. [2018-06-24 21:24:04,070 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 21:24:04,070 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-24 21:24:04,071 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:24:04,071 INFO ]: With dead ends: 8 [2018-06-24 21:24:04,071 INFO ]: Without dead ends: 8 [2018-06-24 21:24:04,072 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:24:04,072 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-24 21:24:04,073 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-24 21:24:04,073 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-24 21:24:04,073 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-06-24 21:24:04,073 INFO ]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-06-24 21:24:04,073 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:24:04,073 INFO ]: Abstraction has 8 states and 8 transitions. [2018-06-24 21:24:04,073 INFO ]: Interpolant automaton has 4 states. [2018-06-24 21:24:04,073 INFO ]: Start isEmpty. Operand 8 states and 8 transitions. [2018-06-24 21:24:04,074 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 21:24:04,074 INFO ]: Found error trace [2018-06-24 21:24:04,074 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-24 21:24:04,074 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:24:04,074 INFO ]: Analyzing trace with hash -317759359, now seen corresponding path program 2 times [2018-06-24 21:24:04,074 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:24:04,074 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:24:04,075 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:04,075 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:24:04,075 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:04,091 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:24:04,201 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:24:04,201 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:24:04,201 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 21:24:04,214 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:24:04,237 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:24:04,237 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:24:04,239 INFO ]: Computing forward predicates... [2018-06-24 21:24:04,352 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:24:04,370 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:24:04,370 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-06-24 21:24:04,371 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:24:04,371 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:24:04,371 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:24:04,371 INFO ]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2018-06-24 21:24:04,406 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:24:04,406 INFO ]: Finished difference Result 5 states and 5 transitions. [2018-06-24 21:24:04,406 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:24:04,406 INFO ]: Start accepts. Automaton has 5 states. Word has length 7 [2018-06-24 21:24:04,406 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:24:04,406 INFO ]: With dead ends: 5 [2018-06-24 21:24:04,406 INFO ]: Without dead ends: 0 [2018-06-24 21:24:04,406 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:24:04,406 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:24:04,407 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:24:04,407 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:24:04,407 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:24:04,407 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-06-24 21:24:04,407 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:24:04,407 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:24:04,407 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:24:04,407 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:24:04,407 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:24:04,409 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:24:04,411 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:24:04 BasicIcfg [2018-06-24 21:24:04,411 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:24:04,413 INFO ]: Toolchain (without parser) took 1455.70 ms. Allocated memory is still 308.8 MB. Free memory was 266.2 MB in the beginning and 214.6 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:04,414 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:24:04,415 INFO ]: ChcToBoogie took 57.89 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 263.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:04,415 INFO ]: Boogie Preprocessor took 32.66 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 262.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 21:24:04,416 INFO ]: RCFGBuilder took 237.93 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 256.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:04,416 INFO ]: BlockEncodingV2 took 66.35 ms. Allocated memory is still 308.8 MB. Free memory was 256.2 MB in the beginning and 253.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:04,416 INFO ]: TraceAbstraction took 1050.90 ms. Allocated memory is still 308.8 MB. Free memory was 253.1 MB in the beginning and 214.6 MB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:04,420 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 11 edges - StatisticsResult: Encoded RCFG 6 locations, 6 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 57.89 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 263.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 32.66 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 262.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 237.93 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 256.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 66.35 ms. Allocated memory is still 308.8 MB. Free memory was 256.2 MB in the beginning and 253.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1050.90 ms. Allocated memory is still 308.8 MB. Free memory was 253.1 MB in the beginning and 214.6 MB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 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, 0.9s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 12 SDs, 0 SdLazy, 22 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=2, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 478 SizeOfPredicates, 6 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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/sum3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-24-04-439.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-24-04-439.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-24-04-439.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-24-04-439.csv Received shutdown request...