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/023b-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:08:06,603 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:08:06,605 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:08:06,617 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:08:06,617 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:08:06,618 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:08:06,621 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:08:06,626 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:08:06,628 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:08:06,629 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:08:06,629 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:08:06,630 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:08:06,631 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:08:06,632 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:08:06,633 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:08:06,634 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:08:06,637 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:08:06,639 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:08:06,643 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:08:06,644 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:08:06,645 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:08:06,647 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:08:06,647 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:08:06,648 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:08:06,648 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:08:06,649 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:08:06,650 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:08:06,651 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:08:06,651 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:08:06,652 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:08:06,652 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:08:06,653 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:08:06,653 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:08:06,654 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:08:06,654 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:08:06,654 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:08:06,667 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:08:06,668 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:08:06,668 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:08:06,668 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:08:06,669 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:08:06,669 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:08:06,669 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:08:06,670 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:08:06,670 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:08:06,670 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:08:06,670 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:08:06,670 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:08:06,670 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:08:06,671 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:08:06,671 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:08:06,671 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:08:06,671 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:08:06,671 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:08:06,671 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:08:06,674 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:08:06,675 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:08:06,676 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:08:06,676 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:08:06,729 INFO ]: Repository-Root is: /tmp [2018-06-24 21:08:06,746 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:08:06,749 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:08:06,751 INFO ]: Initializing SmtParser... [2018-06-24 21:08:06,751 INFO ]: SmtParser initialized [2018-06-24 21:08:06,752 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/023b-horn.smt2 [2018-06-24 21:08:06,753 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 21:08:06,840 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/023b-horn.smt2 unknown [2018-06-24 21:08:06,981 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/023b-horn.smt2 [2018-06-24 21:08:06,987 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:08:06,994 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:08:06,994 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:08:06,994 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:08:06,995 INFO ]: ChcToBoogie initialized [2018-06-24 21:08:06,998 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:08:06" (1/1) ... [2018-06-24 21:08:07,057 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:08:07 Unit [2018-06-24 21:08:07,057 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:08:07,058 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:08:07,058 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:08:07,058 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:08:07,078 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:08:07" (1/1) ... [2018-06-24 21:08:07,078 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:08:07" (1/1) ... [2018-06-24 21:08:07,085 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:08:07" (1/1) ... [2018-06-24 21:08:07,085 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:08:07" (1/1) ... [2018-06-24 21:08:07,088 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:08:07" (1/1) ... [2018-06-24 21:08:07,089 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:08:07" (1/1) ... [2018-06-24 21:08:07,090 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:08:07" (1/1) ... [2018-06-24 21:08:07,092 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:08:07,092 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:08:07,092 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:08:07,092 INFO ]: RCFGBuilder initialized [2018-06-24 21:08:07,093 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:08:07" (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 21:08:07,112 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:08:07,112 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:08:07,112 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:08:07,112 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:08:07,112 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:08:07,112 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 21:08:07,329 INFO ]: Using library mode [2018-06-24 21:08:07,329 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:08:07 BoogieIcfgContainer [2018-06-24 21:08:07,330 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:08:07,330 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:08:07,330 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:08:07,339 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:08:07,339 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:08:07" (1/1) ... [2018-06-24 21:08:07,358 INFO ]: Initial Icfg 10 locations, 12 edges [2018-06-24 21:08:07,360 INFO ]: Using Remove infeasible edges [2018-06-24 21:08:07,360 INFO ]: Using Maximize final states [2018-06-24 21:08:07,361 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:08:07,361 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:08:07,363 INFO ]: Using Remove sink states [2018-06-24 21:08:07,363 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:08:07,363 INFO ]: Using Use SBE [2018-06-24 21:08:07,370 INFO ]: SBE split 0 edges [2018-06-24 21:08:07,375 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 21:08:07,382 INFO ]: 0 new accepting states [2018-06-24 21:08:07,434 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-24 21:08:07,436 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:08:07,441 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:08:07,441 INFO ]: 0 new accepting states [2018-06-24 21:08:07,442 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:08:07,442 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:08:07,442 INFO ]: Encoded RCFG 6 locations, 8 edges [2018-06-24 21:08:07,443 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:08:07 BasicIcfg [2018-06-24 21:08:07,443 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:08:07,446 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:08:07,446 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:08:07,448 INFO ]: TraceAbstraction initialized [2018-06-24 21:08:07,450 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:08:06" (1/4) ... [2018-06-24 21:08:07,452 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7602bfb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:08:07, skipping insertion in model container [2018-06-24 21:08:07,453 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:08:07" (2/4) ... [2018-06-24 21:08:07,453 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7602bfb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:08:07, skipping insertion in model container [2018-06-24 21:08:07,453 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:08:07" (3/4) ... [2018-06-24 21:08:07,453 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7602bfb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:08:07, skipping insertion in model container [2018-06-24 21:08:07,453 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:08:07" (4/4) ... [2018-06-24 21:08:07,454 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:08:07,463 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:08:07,471 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:08:07,525 INFO ]: Using default assertion order modulation [2018-06-24 21:08:07,526 INFO ]: Interprodecural is true [2018-06-24 21:08:07,526 INFO ]: Hoare is false [2018-06-24 21:08:07,526 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:08:07,526 INFO ]: Backedges is TWOTRACK [2018-06-24 21:08:07,526 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:08:07,526 INFO ]: Difference is false [2018-06-24 21:08:07,526 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:08:07,526 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:08:07,540 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 21:08:07,563 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:08:07,563 INFO ]: Found error trace [2018-06-24 21:08:07,564 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:08:07,564 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:08:07,572 INFO ]: Analyzing trace with hash 37311172, now seen corresponding path program 1 times [2018-06-24 21:08:07,574 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:08:07,575 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:08:07,615 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:07,616 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:08:07,616 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:07,663 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:07,730 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:08:07,732 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:08:07,732 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:08:07,733 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:08:07,743 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:08:07,744 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:08:07,746 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 21:08:07,864 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:08:07,864 INFO ]: Finished difference Result 7 states and 11 transitions. [2018-06-24 21:08:07,865 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:08:07,865 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:08:07,866 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:08:07,873 INFO ]: With dead ends: 7 [2018-06-24 21:08:07,874 INFO ]: Without dead ends: 7 [2018-06-24 21:08:07,876 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 21:08:07,889 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:08:07,915 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:08:07,917 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:08:07,917 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-24 21:08:07,918 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 5 [2018-06-24 21:08:07,918 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:08:07,918 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-24 21:08:07,918 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:08:07,918 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-24 21:08:07,919 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:08:07,919 INFO ]: Found error trace [2018-06-24 21:08:07,919 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:08:07,919 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:08:07,919 INFO ]: Analyzing trace with hash 1156261132, now seen corresponding path program 1 times [2018-06-24 21:08:07,919 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:08:07,919 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:08:07,920 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:07,920 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:08:07,920 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:07,936 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:08,109 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:08:08,109 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:08:08,109 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) [2018-06-24 21:08:08,127 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:08:08,171 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:08,178 INFO ]: Computing forward predicates... [2018-06-24 21:08:08,199 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:08:08,228 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:08:08,228 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-24 21:08:08,228 INFO ]: Interpolant automaton has 4 states [2018-06-24 21:08:08,229 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 21:08:08,229 INFO ]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:08:08,229 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 4 states. [2018-06-24 21:08:08,315 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:08:08,315 INFO ]: Finished difference Result 8 states and 14 transitions. [2018-06-24 21:08:08,316 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 21:08:08,316 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-24 21:08:08,316 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:08:08,316 INFO ]: With dead ends: 8 [2018-06-24 21:08:08,316 INFO ]: Without dead ends: 8 [2018-06-24 21:08:08,317 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:08:08,317 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-24 21:08:08,318 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-24 21:08:08,318 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-24 21:08:08,319 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 14 transitions. [2018-06-24 21:08:08,319 INFO ]: Start accepts. Automaton has 8 states and 14 transitions. Word has length 6 [2018-06-24 21:08:08,319 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:08:08,319 INFO ]: Abstraction has 8 states and 14 transitions. [2018-06-24 21:08:08,319 INFO ]: Interpolant automaton has 4 states. [2018-06-24 21:08:08,319 INFO ]: Start isEmpty. Operand 8 states and 14 transitions. [2018-06-24 21:08:08,319 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 21:08:08,319 INFO ]: Found error trace [2018-06-24 21:08:08,319 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-24 21:08:08,319 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:08:08,320 INFO ]: Analyzing trace with hash 1483971524, now seen corresponding path program 2 times [2018-06-24 21:08:08,320 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:08:08,320 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:08:08,320 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:08,320 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:08:08,321 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:08,341 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:08,450 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:08:08,450 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:08:08,451 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 21:08:08,460 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:08:08,517 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:08:08,517 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:08,519 INFO ]: Computing forward predicates... [2018-06-24 21:08:08,525 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:08:08,544 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:08:08,544 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-06-24 21:08:08,544 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:08:08,545 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:08:08,545 INFO ]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:08:08,545 INFO ]: Start difference. First operand 8 states and 14 transitions. Second operand 5 states. [2018-06-24 21:08:08,774 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:08:08,774 INFO ]: Finished difference Result 9 states and 17 transitions. [2018-06-24 21:08:08,774 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:08:08,775 INFO ]: Start accepts. Automaton has 5 states. Word has length 7 [2018-06-24 21:08:08,775 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:08:08,775 INFO ]: With dead ends: 9 [2018-06-24 21:08:08,775 INFO ]: Without dead ends: 9 [2018-06-24 21:08:08,775 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:08:08,776 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-24 21:08:08,777 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-24 21:08:08,777 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 21:08:08,777 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 17 transitions. [2018-06-24 21:08:08,777 INFO ]: Start accepts. Automaton has 9 states and 17 transitions. Word has length 7 [2018-06-24 21:08:08,777 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:08:08,777 INFO ]: Abstraction has 9 states and 17 transitions. [2018-06-24 21:08:08,777 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:08:08,777 INFO ]: Start isEmpty. Operand 9 states and 17 transitions. [2018-06-24 21:08:08,778 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 21:08:08,778 INFO ]: Found error trace [2018-06-24 21:08:08,778 INFO ]: trace histogram [3, 1, 1, 1, 1, 1] [2018-06-24 21:08:08,778 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:08:08,778 INFO ]: Analyzing trace with hash -1241908212, now seen corresponding path program 3 times [2018-06-24 21:08:08,778 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:08:08,778 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:08:08,779 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:08,779 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:08:08,779 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:08,797 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:08,884 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:08:08,884 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:08:08,884 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 21:08:08,891 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-24 21:08:08,920 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-06-24 21:08:08,920 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:08,921 INFO ]: Computing forward predicates... [2018-06-24 21:08:08,986 INFO ]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:08:09,021 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:08:09,021 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2018-06-24 21:08:09,022 INFO ]: Interpolant automaton has 7 states [2018-06-24 21:08:09,022 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 21:08:09,022 INFO ]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:08:09,022 INFO ]: Start difference. First operand 9 states and 17 transitions. Second operand 7 states. [2018-06-24 21:08:09,117 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:08:09,117 INFO ]: Finished difference Result 23 states and 58 transitions. [2018-06-24 21:08:09,117 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 21:08:09,117 INFO ]: Start accepts. Automaton has 7 states. Word has length 8 [2018-06-24 21:08:09,117 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:08:09,118 INFO ]: With dead ends: 23 [2018-06-24 21:08:09,118 INFO ]: Without dead ends: 23 [2018-06-24 21:08:09,119 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:08:09,119 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-24 21:08:09,121 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 11. [2018-06-24 21:08:09,121 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-24 21:08:09,121 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 22 transitions. [2018-06-24 21:08:09,122 INFO ]: Start accepts. Automaton has 11 states and 22 transitions. Word has length 8 [2018-06-24 21:08:09,122 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:08:09,122 INFO ]: Abstraction has 11 states and 22 transitions. [2018-06-24 21:08:09,122 INFO ]: Interpolant automaton has 7 states. [2018-06-24 21:08:09,122 INFO ]: Start isEmpty. Operand 11 states and 22 transitions. [2018-06-24 21:08:09,122 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 21:08:09,122 INFO ]: Found error trace [2018-06-24 21:08:09,122 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2018-06-24 21:08:09,122 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:08:09,122 INFO ]: Analyzing trace with hash -1477290361, now seen corresponding path program 1 times [2018-06-24 21:08:09,122 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:08:09,122 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:08:09,123 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:09,123 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:08:09,123 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:09,137 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:09,223 INFO ]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:08:09,224 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:08:09,224 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 21:08:09,233 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:08:09,265 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:09,267 INFO ]: Computing forward predicates... [2018-06-24 21:08:09,273 INFO ]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:08:09,305 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:08:09,305 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-06-24 21:08:09,305 INFO ]: Interpolant automaton has 6 states [2018-06-24 21:08:09,305 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 21:08:09,306 INFO ]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:08:09,306 INFO ]: Start difference. First operand 11 states and 22 transitions. Second operand 6 states. [2018-06-24 21:08:09,405 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:08:09,405 INFO ]: Finished difference Result 21 states and 52 transitions. [2018-06-24 21:08:09,405 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-24 21:08:09,405 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-24 21:08:09,405 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:08:09,406 INFO ]: With dead ends: 21 [2018-06-24 21:08:09,406 INFO ]: Without dead ends: 21 [2018-06-24 21:08:09,406 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:08:09,406 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-24 21:08:09,408 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 11. [2018-06-24 21:08:09,408 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-24 21:08:09,409 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 22 transitions. [2018-06-24 21:08:09,409 INFO ]: Start accepts. Automaton has 11 states and 22 transitions. Word has length 9 [2018-06-24 21:08:09,409 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:08:09,409 INFO ]: Abstraction has 11 states and 22 transitions. [2018-06-24 21:08:09,409 INFO ]: Interpolant automaton has 6 states. [2018-06-24 21:08:09,409 INFO ]: Start isEmpty. Operand 11 states and 22 transitions. [2018-06-24 21:08:09,409 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-24 21:08:09,409 INFO ]: Found error trace [2018-06-24 21:08:09,409 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2018-06-24 21:08:09,409 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:08:09,409 INFO ]: Analyzing trace with hash -294556470, now seen corresponding path program 1 times [2018-06-24 21:08:09,409 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:08:09,410 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:08:09,410 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:09,410 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:08:09,410 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:09,425 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:09,502 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:08:09,502 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:08:09,503 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:08:09,511 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:08:09,545 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:09,547 INFO ]: Computing forward predicates... [2018-06-24 21:08:09,555 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:08:09,586 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:08:09,586 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-06-24 21:08:09,586 INFO ]: Interpolant automaton has 8 states [2018-06-24 21:08:09,587 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 21:08:09,587 INFO ]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:08:09,587 INFO ]: Start difference. First operand 11 states and 22 transitions. Second operand 8 states. [2018-06-24 21:08:10,018 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:08:10,018 INFO ]: Finished difference Result 31 states and 82 transitions. [2018-06-24 21:08:10,018 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-24 21:08:10,018 INFO ]: Start accepts. Automaton has 8 states. Word has length 10 [2018-06-24 21:08:10,018 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:08:10,019 INFO ]: With dead ends: 31 [2018-06-24 21:08:10,019 INFO ]: Without dead ends: 31 [2018-06-24 21:08:10,019 INFO ]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:08:10,020 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-24 21:08:10,022 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 13. [2018-06-24 21:08:10,022 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-24 21:08:10,022 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 28 transitions. [2018-06-24 21:08:10,022 INFO ]: Start accepts. Automaton has 13 states and 28 transitions. Word has length 10 [2018-06-24 21:08:10,022 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:08:10,022 INFO ]: Abstraction has 13 states and 28 transitions. [2018-06-24 21:08:10,022 INFO ]: Interpolant automaton has 8 states. [2018-06-24 21:08:10,023 INFO ]: Start isEmpty. Operand 13 states and 28 transitions. [2018-06-24 21:08:10,023 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-24 21:08:10,023 INFO ]: Found error trace [2018-06-24 21:08:10,023 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2018-06-24 21:08:10,023 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:08:10,023 INFO ]: Analyzing trace with hash -541701178, now seen corresponding path program 2 times [2018-06-24 21:08:10,023 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:08:10,023 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:08:10,024 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:10,024 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:08:10,024 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:10,049 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:10,176 INFO ]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:08:10,176 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:08:10,176 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:08:10,186 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:08:10,209 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:08:10,209 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:10,210 INFO ]: Computing forward predicates... [2018-06-24 21:08:10,344 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:08:10,364 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:08:10,364 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2018-06-24 21:08:10,364 INFO ]: Interpolant automaton has 15 states [2018-06-24 21:08:10,364 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-24 21:08:10,364 INFO ]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-06-24 21:08:10,364 INFO ]: Start difference. First operand 13 states and 28 transitions. Second operand 15 states. [2018-06-24 21:08:11,275 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:08:11,275 INFO ]: Finished difference Result 56 states and 157 transitions. [2018-06-24 21:08:11,276 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-06-24 21:08:11,276 INFO ]: Start accepts. Automaton has 15 states. Word has length 11 [2018-06-24 21:08:11,276 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:08:11,277 INFO ]: With dead ends: 56 [2018-06-24 21:08:11,277 INFO ]: Without dead ends: 56 [2018-06-24 21:08:11,278 INFO ]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=823, Invalid=1829, Unknown=0, NotChecked=0, Total=2652 [2018-06-24 21:08:11,278 INFO ]: Start minimizeSevpa. Operand 56 states. [2018-06-24 21:08:11,282 INFO ]: Finished minimizeSevpa. Reduced states from 56 to 14. [2018-06-24 21:08:11,282 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-24 21:08:11,282 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 31 transitions. [2018-06-24 21:08:11,282 INFO ]: Start accepts. Automaton has 14 states and 31 transitions. Word has length 11 [2018-06-24 21:08:11,282 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:08:11,282 INFO ]: Abstraction has 14 states and 31 transitions. [2018-06-24 21:08:11,282 INFO ]: Interpolant automaton has 15 states. [2018-06-24 21:08:11,282 INFO ]: Start isEmpty. Operand 14 states and 31 transitions. [2018-06-24 21:08:11,284 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-24 21:08:11,284 INFO ]: Found error trace [2018-06-24 21:08:11,284 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2018-06-24 21:08:11,284 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:08:11,284 INFO ]: Analyzing trace with hash 386747466, now seen corresponding path program 3 times [2018-06-24 21:08:11,284 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:08:11,284 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:08:11,285 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:11,285 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:08:11,285 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:11,306 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:11,365 INFO ]: Checked inductivity of 28 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:08:11,365 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:08:11,365 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:08:11,372 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-24 21:08:11,404 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-24 21:08:11,404 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:11,407 INFO ]: Computing forward predicates... [2018-06-24 21:08:11,439 INFO ]: Checked inductivity of 28 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-24 21:08:11,461 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:08:11,461 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 11 [2018-06-24 21:08:11,461 INFO ]: Interpolant automaton has 11 states [2018-06-24 21:08:11,461 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-24 21:08:11,461 INFO ]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2018-06-24 21:08:11,461 INFO ]: Start difference. First operand 14 states and 31 transitions. Second operand 11 states. [2018-06-24 21:08:11,510 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:08:11,510 INFO ]: Finished difference Result 43 states and 116 transitions. [2018-06-24 21:08:11,511 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-24 21:08:11,511 INFO ]: Start accepts. Automaton has 11 states. Word has length 12 [2018-06-24 21:08:11,511 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:08:11,511 INFO ]: With dead ends: 43 [2018-06-24 21:08:11,511 INFO ]: Without dead ends: 42 [2018-06-24 21:08:11,512 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2018-06-24 21:08:11,512 INFO ]: Start minimizeSevpa. Operand 42 states. [2018-06-24 21:08:11,514 INFO ]: Finished minimizeSevpa. Reduced states from 42 to 14. [2018-06-24 21:08:11,514 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-24 21:08:11,515 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 30 transitions. [2018-06-24 21:08:11,515 INFO ]: Start accepts. Automaton has 14 states and 30 transitions. Word has length 12 [2018-06-24 21:08:11,515 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:08:11,515 INFO ]: Abstraction has 14 states and 30 transitions. [2018-06-24 21:08:11,515 INFO ]: Interpolant automaton has 11 states. [2018-06-24 21:08:11,515 INFO ]: Start isEmpty. Operand 14 states and 30 transitions. [2018-06-24 21:08:11,515 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-24 21:08:11,515 INFO ]: Found error trace [2018-06-24 21:08:11,515 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1] [2018-06-24 21:08:11,516 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:08:11,516 INFO ]: Analyzing trace with hash 1601900295, now seen corresponding path program 2 times [2018-06-24 21:08:11,516 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:08:11,516 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:08:11,516 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:11,516 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:08:11,516 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:11,529 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:11,592 INFO ]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:08:11,592 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:08:11,592 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:08:11,599 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:08:11,654 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:08:11,654 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:11,656 INFO ]: Computing forward predicates... [2018-06-24 21:08:11,666 INFO ]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:08:11,698 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:08:11,698 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-06-24 21:08:11,698 INFO ]: Interpolant automaton has 10 states [2018-06-24 21:08:11,698 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-24 21:08:11,698 INFO ]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-06-24 21:08:11,698 INFO ]: Start difference. First operand 14 states and 30 transitions. Second operand 10 states. [2018-06-24 21:08:12,004 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:08:12,004 INFO ]: Finished difference Result 50 states and 138 transitions. [2018-06-24 21:08:12,004 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-24 21:08:12,005 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-24 21:08:12,005 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:08:12,006 INFO ]: With dead ends: 50 [2018-06-24 21:08:12,006 INFO ]: Without dead ends: 50 [2018-06-24 21:08:12,006 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-06-24 21:08:12,006 INFO ]: Start minimizeSevpa. Operand 50 states. [2018-06-24 21:08:12,008 INFO ]: Finished minimizeSevpa. Reduced states from 50 to 15. [2018-06-24 21:08:12,008 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-24 21:08:12,009 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 33 transitions. [2018-06-24 21:08:12,009 INFO ]: Start accepts. Automaton has 15 states and 33 transitions. Word has length 13 [2018-06-24 21:08:12,009 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:08:12,009 INFO ]: Abstraction has 15 states and 33 transitions. [2018-06-24 21:08:12,009 INFO ]: Interpolant automaton has 10 states. [2018-06-24 21:08:12,009 INFO ]: Start isEmpty. Operand 15 states and 33 transitions. [2018-06-24 21:08:12,009 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-24 21:08:12,009 INFO ]: Found error trace [2018-06-24 21:08:12,009 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1] [2018-06-24 21:08:12,009 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:08:12,010 INFO ]: Analyzing trace with hash -1881083607, now seen corresponding path program 3 times [2018-06-24 21:08:12,010 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:08:12,010 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:08:12,010 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:12,010 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:08:12,010 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:08:12,022 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:12,105 INFO ]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:08:12,105 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:08:12,105 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:08:12,111 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-24 21:08:12,146 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-24 21:08:12,146 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:08:12,148 INFO ]: Computing forward predicates... [2018-06-24 21:08:12,183 INFO ]: Checked inductivity of 45 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-24 21:08:12,203 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:08:12,203 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4] total 14 [2018-06-24 21:08:12,203 INFO ]: Interpolant automaton has 14 states [2018-06-24 21:08:12,203 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-24 21:08:12,203 INFO ]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2018-06-24 21:08:12,203 INFO ]: Start difference. First operand 15 states and 33 transitions. Second operand 14 states. [2018-06-24 21:08:12,456 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:08:12,456 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-24 21:08:12,456 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-24 21:08:12,456 INFO ]: Start accepts. Automaton has 14 states. Word has length 14 [2018-06-24 21:08:12,456 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:08:12,456 INFO ]: With dead ends: 13 [2018-06-24 21:08:12,456 INFO ]: Without dead ends: 0 [2018-06-24 21:08:12,457 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2018-06-24 21:08:12,457 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:08:12,457 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:08:12,457 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:08:12,457 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:08:12,457 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-06-24 21:08:12,457 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:08:12,457 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:08:12,457 INFO ]: Interpolant automaton has 14 states. [2018-06-24 21:08:12,457 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:08:12,457 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:08:12,459 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:08:12,461 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:08:12 BasicIcfg [2018-06-24 21:08:12,461 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:08:12,462 INFO ]: Toolchain (without parser) took 5474.04 ms. Allocated memory was 307.8 MB in the beginning and 363.9 MB in the end (delta: 56.1 MB). Free memory was 264.1 MB in the beginning and 334.0 MB in the end (delta: -69.8 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:08:12,463 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:08:12,464 INFO ]: ChcToBoogie took 63.30 ms. Allocated memory is still 307.8 MB. Free memory was 264.1 MB in the beginning and 262.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:08:12,464 INFO ]: Boogie Preprocessor took 34.00 ms. Allocated memory is still 307.8 MB. Free memory was 262.1 MB in the beginning and 261.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 21:08:12,465 INFO ]: RCFGBuilder took 237.23 ms. Allocated memory is still 307.8 MB. Free memory was 261.1 MB in the beginning and 253.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:08:12,465 INFO ]: BlockEncodingV2 took 114.33 ms. Allocated memory is still 307.8 MB. Free memory was 253.1 MB in the beginning and 251.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:08:12,465 INFO ]: TraceAbstraction took 5015.32 ms. Allocated memory was 307.8 MB in the beginning and 363.9 MB in the end (delta: 56.1 MB). Free memory was 250.1 MB in the beginning and 334.0 MB in the end (delta: -83.9 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:08:12,469 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 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 63.30 ms. Allocated memory is still 307.8 MB. Free memory was 264.1 MB in the beginning and 262.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 34.00 ms. Allocated memory is still 307.8 MB. Free memory was 262.1 MB in the beginning and 261.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 237.23 ms. Allocated memory is still 307.8 MB. Free memory was 261.1 MB in the beginning and 253.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 114.33 ms. Allocated memory is still 307.8 MB. Free memory was 253.1 MB in the beginning and 251.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5015.32 ms. Allocated memory was 307.8 MB in the beginning and 363.9 MB in the end (delta: 56.1 MB). Free memory was 250.1 MB in the beginning and 334.0 MB in the end (delta: -83.9 MB). There was no memory consumed. 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, 4.9s OverallTime, 10 OverallIterations, 8 TraceHistogramMax, 2.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 219 SolverSat, 224 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 202 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=9, 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, 10 MinimizatonAttempts, 145 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 185 NumberOfCodeBlocks, 176 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 3760 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1149 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 19 InterpolantComputations, 2 PerfectInterpolantSequences, 86/330 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/023b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-08-12-480.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/023b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-08-12-480.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/023b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-08-12-480.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/023b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-08-12-480.csv Received shutdown request...