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/HOLA/38.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 20:43:46,518 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 20:43:46,521 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 20:43:46,533 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 20:43:46,533 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 20:43:46,534 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 20:43:46,535 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 20:43:46,539 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 20:43:46,541 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 20:43:46,541 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 20:43:46,543 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 20:43:46,543 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 20:43:46,544 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 20:43:46,545 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 20:43:46,546 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 20:43:46,546 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 20:43:46,550 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 20:43:46,552 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 20:43:46,564 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 20:43:46,565 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 20:43:46,566 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 20:43:46,569 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-24 20:43:46,577 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 20:43:46,578 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 20:43:46,578 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 20:43:46,578 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 20:43:46,585 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 20:43:46,586 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 20:43:46,586 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 20:43:46,604 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 20:43:46,605 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 20:43:46,607 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 20:43:46,607 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 20:43:46,608 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 20:43:46,608 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 20:43:46,609 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 20:43:46,609 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 20:43:46,609 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 20:43:46,609 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 20:43:46,609 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 20:43:46,610 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 20:43:46,610 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:43:46,610 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 20:43:46,610 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 20:43:46,610 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 20:43:46,610 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 20:43:46,611 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 20:43:46,612 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 20:43:46,612 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 20:43:46,612 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 20:43:46,613 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 20:43:46,614 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 20:43:46,657 INFO ]: Repository-Root is: /tmp [2018-06-24 20:43:46,675 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 20:43:46,682 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 20:43:46,684 INFO ]: Initializing SmtParser... [2018-06-24 20:43:46,684 INFO ]: SmtParser initialized [2018-06-24 20:43:46,685 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/38.c.smt2 [2018-06-24 20:43:46,686 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 20:43:46,772 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/38.c.smt2 unknown [2018-06-24 20:43:47,193 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/38.c.smt2 [2018-06-24 20:43:47,198 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 20:43:47,216 INFO ]: Walking toolchain with 5 elements. [2018-06-24 20:43:47,217 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 20:43:47,217 INFO ]: Initializing ChcToBoogie... [2018-06-24 20:43:47,217 INFO ]: ChcToBoogie initialized [2018-06-24 20:43:47,221 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:43:47" (1/1) ... [2018-06-24 20:43:47,307 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:47 Unit [2018-06-24 20:43:47,307 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 20:43:47,308 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 20:43:47,308 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 20:43:47,308 INFO ]: Boogie Preprocessor initialized [2018-06-24 20:43:47,336 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:47" (1/1) ... [2018-06-24 20:43:47,336 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:47" (1/1) ... [2018-06-24 20:43:47,343 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:47" (1/1) ... [2018-06-24 20:43:47,344 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:47" (1/1) ... [2018-06-24 20:43:47,348 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:47" (1/1) ... [2018-06-24 20:43:47,350 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:47" (1/1) ... [2018-06-24 20:43:47,358 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:47" (1/1) ... [2018-06-24 20:43:47,360 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 20:43:47,361 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 20:43:47,361 INFO ]: Initializing RCFGBuilder... [2018-06-24 20:43:47,361 INFO ]: RCFGBuilder initialized [2018-06-24 20:43:47,362 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:47" (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 20:43:47,372 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 20:43:47,372 INFO ]: Found specification of procedure gotoProc [2018-06-24 20:43:47,372 INFO ]: Found implementation of procedure gotoProc [2018-06-24 20:43:47,372 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 20:43:47,372 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 20:43:47,372 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 20:43:47,842 INFO ]: Using library mode [2018-06-24 20:43:47,843 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:43:47 BoogieIcfgContainer [2018-06-24 20:43:47,843 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 20:43:47,843 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 20:43:47,843 INFO ]: Initializing BlockEncodingV2... [2018-06-24 20:43:47,844 INFO ]: BlockEncodingV2 initialized [2018-06-24 20:43:47,845 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:43:47" (1/1) ... [2018-06-24 20:43:47,866 INFO ]: Initial Icfg 30 locations, 33 edges [2018-06-24 20:43:47,867 INFO ]: Using Remove infeasible edges [2018-06-24 20:43:47,867 INFO ]: Using Maximize final states [2018-06-24 20:43:47,868 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 20:43:47,868 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 20:43:47,871 INFO ]: Using Remove sink states [2018-06-24 20:43:47,872 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 20:43:47,872 INFO ]: Using Use SBE [2018-06-24 20:43:47,879 INFO ]: SBE split 0 edges [2018-06-24 20:43:47,884 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 20:43:47,886 INFO ]: 0 new accepting states [2018-06-24 20:43:48,456 INFO ]: Removed 55 edges and 22 locations by large block encoding [2018-06-24 20:43:48,458 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:43:48,459 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 20:43:48,459 INFO ]: 0 new accepting states [2018-06-24 20:43:48,459 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:43:48,460 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:43:48,464 INFO ]: Encoded RCFG 6 locations, 9 edges [2018-06-24 20:43:48,465 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:43:48 BasicIcfg [2018-06-24 20:43:48,465 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 20:43:48,466 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 20:43:48,466 INFO ]: Initializing TraceAbstraction... [2018-06-24 20:43:48,469 INFO ]: TraceAbstraction initialized [2018-06-24 20:43:48,469 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:43:47" (1/4) ... [2018-06-24 20:43:48,470 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2277f67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 08:43:48, skipping insertion in model container [2018-06-24 20:43:48,470 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:47" (2/4) ... [2018-06-24 20:43:48,470 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2277f67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:43:48, skipping insertion in model container [2018-06-24 20:43:48,470 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:43:47" (3/4) ... [2018-06-24 20:43:48,470 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2277f67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:43:48, skipping insertion in model container [2018-06-24 20:43:48,471 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:43:48" (4/4) ... [2018-06-24 20:43:48,473 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 20:43:48,484 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 20:43:48,492 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 20:43:48,538 INFO ]: Using default assertion order modulation [2018-06-24 20:43:48,538 INFO ]: Interprodecural is true [2018-06-24 20:43:48,538 INFO ]: Hoare is false [2018-06-24 20:43:48,538 INFO ]: Compute interpolants for FPandBP [2018-06-24 20:43:48,538 INFO ]: Backedges is TWOTRACK [2018-06-24 20:43:48,538 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 20:43:48,538 INFO ]: Difference is false [2018-06-24 20:43:48,538 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 20:43:48,538 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 20:43:48,547 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 20:43:48,556 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 20:43:48,556 INFO ]: Found error trace [2018-06-24 20:43:48,557 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 20:43:48,557 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:43:48,562 INFO ]: Analyzing trace with hash 38464085, now seen corresponding path program 1 times [2018-06-24 20:43:48,563 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:43:48,563 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:43:48,597 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:48,597 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:43:48,597 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:48,683 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:43:48,871 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:43:48,873 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:43:48,874 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:43:48,875 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:43:48,890 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:43:48,890 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:43:48,892 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 20:43:48,953 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:43:48,953 INFO ]: Finished difference Result 7 states and 12 transitions. [2018-06-24 20:43:48,953 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:43:48,954 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 20:43:48,955 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:43:48,962 INFO ]: With dead ends: 7 [2018-06-24 20:43:48,963 INFO ]: Without dead ends: 7 [2018-06-24 20:43:48,964 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:43:48,977 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 20:43:48,994 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 20:43:48,995 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 20:43:48,996 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2018-06-24 20:43:49,008 INFO ]: Start accepts. Automaton has 7 states and 12 transitions. Word has length 5 [2018-06-24 20:43:49,008 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:43:49,008 INFO ]: Abstraction has 7 states and 12 transitions. [2018-06-24 20:43:49,008 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:43:49,008 INFO ]: Start isEmpty. Operand 7 states and 12 transitions. [2018-06-24 20:43:49,009 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 20:43:49,009 INFO ]: Found error trace [2018-06-24 20:43:49,009 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 20:43:49,009 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:43:49,009 INFO ]: Analyzing trace with hash 1192180142, now seen corresponding path program 1 times [2018-06-24 20:43:49,009 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:43:49,009 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:43:49,010 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:49,010 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:43:49,010 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:49,085 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:43:49,203 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:43:49,204 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:43:49,204 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:43:49,205 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:43:49,205 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:43:49,205 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:43:49,205 INFO ]: Start difference. First operand 7 states and 12 transitions. Second operand 3 states. [2018-06-24 20:43:49,327 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:43:49,327 INFO ]: Finished difference Result 8 states and 12 transitions. [2018-06-24 20:43:49,328 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:43:49,328 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-24 20:43:49,328 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:43:49,328 INFO ]: With dead ends: 8 [2018-06-24 20:43:49,328 INFO ]: Without dead ends: 8 [2018-06-24 20:43:49,329 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 20:43:49,329 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-24 20:43:49,330 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-24 20:43:49,330 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-24 20:43:49,331 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 12 transitions. [2018-06-24 20:43:49,331 INFO ]: Start accepts. Automaton has 8 states and 12 transitions. Word has length 6 [2018-06-24 20:43:49,331 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:43:49,331 INFO ]: Abstraction has 8 states and 12 transitions. [2018-06-24 20:43:49,331 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:43:49,331 INFO ]: Start isEmpty. Operand 8 states and 12 transitions. [2018-06-24 20:43:49,331 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 20:43:49,331 INFO ]: Found error trace [2018-06-24 20:43:49,331 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 20:43:49,331 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:43:49,331 INFO ]: Analyzing trace with hash 1192299306, now seen corresponding path program 1 times [2018-06-24 20:43:49,331 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:43:49,331 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:43:49,332 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:49,332 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:43:49,332 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:49,387 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:43:49,520 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:43:49,520 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:43:49,520 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 20:43:49,528 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:43:49,658 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:43:49,668 INFO ]: Computing forward predicates... [2018-06-24 20:43:49,802 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:43:49,824 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 20:43:49,825 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2018-06-24 20:43:49,825 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:43:49,825 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:43:49,825 INFO ]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:43:49,825 INFO ]: Start difference. First operand 8 states and 12 transitions. Second operand 5 states. [2018-06-24 20:43:49,968 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:43:49,968 INFO ]: Finished difference Result 11 states and 17 transitions. [2018-06-24 20:43:49,969 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 20:43:49,969 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 20:43:49,969 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:43:49,970 INFO ]: With dead ends: 11 [2018-06-24 20:43:49,970 INFO ]: Without dead ends: 8 [2018-06-24 20:43:49,970 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:43:49,970 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-24 20:43:49,971 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-24 20:43:49,971 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-24 20:43:49,971 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-06-24 20:43:49,971 INFO ]: Start accepts. Automaton has 8 states and 11 transitions. Word has length 6 [2018-06-24 20:43:49,971 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:43:49,971 INFO ]: Abstraction has 8 states and 11 transitions. [2018-06-24 20:43:49,972 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:43:49,972 INFO ]: Start isEmpty. Operand 8 states and 11 transitions. [2018-06-24 20:43:49,972 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 20:43:49,972 INFO ]: Found error trace [2018-06-24 20:43:49,972 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 20:43:49,972 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:43:49,972 INFO ]: Analyzing trace with hash 1193222827, now seen corresponding path program 1 times [2018-06-24 20:43:49,972 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:43:49,972 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:43:49,975 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:49,975 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:43:49,975 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:50,007 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:43:50,062 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:43:50,062 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:43:50,062 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:43:50,062 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:43:50,062 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:43:50,062 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:43:50,063 INFO ]: Start difference. First operand 8 states and 11 transitions. Second operand 3 states. [2018-06-24 20:43:50,151 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:43:50,151 INFO ]: Finished difference Result 8 states and 10 transitions. [2018-06-24 20:43:50,152 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:43:50,152 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-24 20:43:50,152 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:43:50,152 INFO ]: With dead ends: 8 [2018-06-24 20:43:50,152 INFO ]: Without dead ends: 8 [2018-06-24 20:43:50,153 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 20:43:50,153 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-24 20:43:50,154 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-24 20:43:50,154 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-24 20:43:50,154 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-06-24 20:43:50,154 INFO ]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 6 [2018-06-24 20:43:50,154 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:43:50,154 INFO ]: Abstraction has 8 states and 10 transitions. [2018-06-24 20:43:50,154 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:43:50,154 INFO ]: Start isEmpty. Operand 8 states and 10 transitions. [2018-06-24 20:43:50,154 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 20:43:50,154 INFO ]: Found error trace [2018-06-24 20:43:50,154 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:43:50,155 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:43:50,155 INFO ]: Analyzing trace with hash -1665004520, now seen corresponding path program 1 times [2018-06-24 20:43:50,155 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:43:50,155 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:43:50,155 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:50,155 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:43:50,155 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:50,179 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:43:50,360 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:43:50,360 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:43:50,360 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 20:43:50,366 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:43:50,448 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:43:50,452 INFO ]: Computing forward predicates... [2018-06-24 20:43:50,729 INFO ]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:43:50,760 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 20:43:50,760 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-06-24 20:43:50,760 INFO ]: Interpolant automaton has 6 states [2018-06-24 20:43:50,760 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 20:43:50,761 INFO ]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-24 20:43:50,761 INFO ]: Start difference. First operand 8 states and 10 transitions. Second operand 6 states. [2018-06-24 20:43:50,905 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:43:50,905 INFO ]: Finished difference Result 10 states and 14 transitions. [2018-06-24 20:43:50,906 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 20:43:50,906 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-24 20:43:50,906 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:43:50,906 INFO ]: With dead ends: 10 [2018-06-24 20:43:50,906 INFO ]: Without dead ends: 10 [2018-06-24 20:43:50,907 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-24 20:43:50,907 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-24 20:43:50,908 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-06-24 20:43:50,908 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 20:43:50,909 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2018-06-24 20:43:50,909 INFO ]: Start accepts. Automaton has 9 states and 13 transitions. Word has length 7 [2018-06-24 20:43:50,909 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:43:50,909 INFO ]: Abstraction has 9 states and 13 transitions. [2018-06-24 20:43:50,909 INFO ]: Interpolant automaton has 6 states. [2018-06-24 20:43:50,909 INFO ]: Start isEmpty. Operand 9 states and 13 transitions. [2018-06-24 20:43:50,909 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 20:43:50,909 INFO ]: Found error trace [2018-06-24 20:43:50,909 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-06-24 20:43:50,909 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:43:50,909 INFO ]: Analyzing trace with hash -72044977, now seen corresponding path program 2 times [2018-06-24 20:43:50,909 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:43:50,909 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:43:50,910 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:50,910 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:43:50,910 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:50,929 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:43:51,022 INFO ]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:43:51,022 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:43:51,022 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 20:43:51,028 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 20:43:51,169 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 20:43:51,169 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:43:51,174 INFO ]: Computing forward predicates... [2018-06-24 20:43:51,217 INFO ]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-24 20:43:51,252 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 20:43:51,252 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-06-24 20:43:51,252 INFO ]: Interpolant automaton has 7 states [2018-06-24 20:43:51,252 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 20:43:51,253 INFO ]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:43:51,253 INFO ]: Start difference. First operand 9 states and 13 transitions. Second operand 7 states. [2018-06-24 20:43:51,304 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:43:51,304 INFO ]: Finished difference Result 4 states and 5 transitions. [2018-06-24 20:43:51,304 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 20:43:51,304 INFO ]: Start accepts. Automaton has 7 states. Word has length 8 [2018-06-24 20:43:51,304 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:43:51,304 INFO ]: With dead ends: 4 [2018-06-24 20:43:51,304 INFO ]: Without dead ends: 0 [2018-06-24 20:43:51,304 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:43:51,305 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 20:43:51,305 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 20:43:51,305 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 20:43:51,305 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 20:43:51,305 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-06-24 20:43:51,305 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:43:51,305 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 20:43:51,305 INFO ]: Interpolant automaton has 7 states. [2018-06-24 20:43:51,305 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 20:43:51,305 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 20:43:51,307 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 20:43:51,308 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:43:51 BasicIcfg [2018-06-24 20:43:51,309 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 20:43:51,309 INFO ]: Toolchain (without parser) took 4111.03 ms. Allocated memory was 305.1 MB in the beginning and 358.6 MB in the end (delta: 53.5 MB). Free memory was 250.6 MB in the beginning and 313.5 MB in the end (delta: -62.9 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:43:51,310 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 305.1 MB. Free memory is still 270.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:43:51,311 INFO ]: ChcToBoogie took 90.62 ms. Allocated memory is still 305.1 MB. Free memory was 250.6 MB in the beginning and 247.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:43:51,311 INFO ]: Boogie Preprocessor took 52.38 ms. Allocated memory is still 305.1 MB. Free memory was 247.6 MB in the beginning and 246.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 20:43:51,312 INFO ]: RCFGBuilder took 482.29 ms. Allocated memory is still 305.1 MB. Free memory was 246.6 MB in the beginning and 223.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 3.6 GB. [2018-06-24 20:43:51,312 INFO ]: BlockEncodingV2 took 621.39 ms. Allocated memory was 305.1 MB in the beginning and 324.5 MB in the end (delta: 19.4 MB). Free memory was 223.5 MB in the beginning and 291.0 MB in the end (delta: -67.6 MB). Peak memory consumption was 45.3 MB. Max. memory is 3.6 GB. [2018-06-24 20:43:51,313 INFO ]: TraceAbstraction took 2842.85 ms. Allocated memory was 324.5 MB in the beginning and 358.6 MB in the end (delta: 34.1 MB). Free memory was 291.0 MB in the beginning and 313.5 MB in the end (delta: -22.5 MB). Peak memory consumption was 11.6 MB. Max. memory is 3.6 GB. [2018-06-24 20:43:51,316 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 30 locations, 33 edges - StatisticsResult: Encoded RCFG 6 locations, 9 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 305.1 MB. Free memory is still 270.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 90.62 ms. Allocated memory is still 305.1 MB. Free memory was 250.6 MB in the beginning and 247.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 52.38 ms. Allocated memory is still 305.1 MB. Free memory was 247.6 MB in the beginning and 246.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 482.29 ms. Allocated memory is still 305.1 MB. Free memory was 246.6 MB in the beginning and 223.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 621.39 ms. Allocated memory was 305.1 MB in the beginning and 324.5 MB in the end (delta: 19.4 MB). Free memory was 223.5 MB in the beginning and 291.0 MB in the end (delta: -67.6 MB). Peak memory consumption was 45.3 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2842.85 ms. Allocated memory was 324.5 MB in the beginning and 358.6 MB in the end (delta: 34.1 MB). Free memory was 291.0 MB in the beginning and 313.5 MB in the end (delta: -22.5 MB). Peak memory consumption was 11.6 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, 2.7s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 25 SDs, 0 SdLazy, 58 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=5, 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, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 50 ConstructedInterpolants, 2 QuantifiedInterpolants, 1141 SizeOfPredicates, 109 NumberOfNonLiveVariables, 1444 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 10/22 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/38.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_20-43-51-327.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/38.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_20-43-51-327.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/38.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_20-43-51-327.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/38.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_20-43-51-327.csv Received shutdown request...