java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/reve/010-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:13:25,225 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:13:25,228 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:13:25,243 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:13:25,245 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:13:25,245 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:13:25,246 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:13:25,249 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:13:25,250 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:13:25,252 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:13:25,253 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:13:25,253 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:13:25,254 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:13:25,259 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:13:25,260 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:13:25,260 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:13:25,272 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:13:25,274 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:13:25,275 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:13:25,276 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:13:25,277 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:13:25,279 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:13:25,282 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:13:25,283 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:13:25,284 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:13:25,285 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:13:25,285 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:13:25,287 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:13:25,287 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:13:25,288 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:13:25,288 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:13:25,289 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:13:25,289 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:13:25,295 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:13:25,295 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:13:25,296 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 11:13:25,314 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:13:25,315 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:13:25,315 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:13:25,315 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:13:25,317 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:13:25,317 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:13:25,317 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:13:25,317 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:13:25,318 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:13:25,318 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:13:25,318 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:13:25,318 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:13:25,318 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:13:25,318 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:13:25,319 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:13:25,319 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:13:25,319 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:13:25,319 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:13:25,319 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:13:25,320 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:13:25,322 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:13:25,368 INFO ]: Repository-Root is: /tmp [2018-06-22 11:13:25,383 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:13:25,388 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:13:25,390 INFO ]: Initializing SmtParser... [2018-06-22 11:13:25,390 INFO ]: SmtParser initialized [2018-06-22 11:13:25,391 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/010-horn.smt2 [2018-06-22 11:13:25,392 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 [2018-06-22 11:13:25,483 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/010-horn.smt2 unknown [2018-06-22 11:13:25,644 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/010-horn.smt2 [2018-06-22 11:13:25,649 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:13:25,655 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:13:25,656 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:13:25,656 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:13:25,656 INFO ]: ChcToBoogie initialized [2018-06-22 11:13:25,659 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:13:25" (1/1) ... [2018-06-22 11:13:25,703 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:13:25 Unit [2018-06-22 11:13:25,704 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:13:25,705 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:13:25,705 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:13:25,705 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:13:25,724 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:13:25" (1/1) ... [2018-06-22 11:13:25,725 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:13:25" (1/1) ... [2018-06-22 11:13:25,732 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:13:25" (1/1) ... [2018-06-22 11:13:25,732 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:13:25" (1/1) ... [2018-06-22 11:13:25,734 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:13:25" (1/1) ... [2018-06-22 11:13:25,737 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:13:25" (1/1) ... [2018-06-22 11:13:25,737 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:13:25" (1/1) ... [2018-06-22 11:13:25,739 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:13:25,739 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:13:25,739 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:13:25,739 INFO ]: RCFGBuilder initialized [2018-06-22 11:13:25,743 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:13:25" (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) [2018-06-22 11:13:25,758 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:13:25,758 INFO ]: Found specification of procedure False [2018-06-22 11:13:25,758 INFO ]: Found implementation of procedure False [2018-06-22 11:13:25,758 INFO ]: Specification and implementation of procedure INV1 given in one single declaration [2018-06-22 11:13:25,758 INFO ]: Found specification of procedure INV1 [2018-06-22 11:13:25,758 INFO ]: Found implementation of procedure INV1 [2018-06-22 11:13:25,758 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:13:25,758 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:13:25,758 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 [2018-06-22 11:13:26,013 INFO ]: Using library mode [2018-06-22 11:13:26,014 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:13:26 BoogieIcfgContainer [2018-06-22 11:13:26,014 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:13:26,015 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:13:26,015 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:13:26,023 INFO ]: TraceAbstraction initialized [2018-06-22 11:13:26,023 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:13:25" (1/3) ... [2018-06-22 11:13:26,024 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10dfd04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:13:26, skipping insertion in model container [2018-06-22 11:13:26,024 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:13:25" (2/3) ... [2018-06-22 11:13:26,024 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10dfd04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:13:26, skipping insertion in model container [2018-06-22 11:13:26,024 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:13:26" (3/3) ... [2018-06-22 11:13:26,026 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:13:26,039 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:13:26,050 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:13:26,082 INFO ]: Using default assertion order modulation [2018-06-22 11:13:26,082 INFO ]: Interprodecural is true [2018-06-22 11:13:26,082 INFO ]: Hoare is false [2018-06-22 11:13:26,082 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:13:26,082 INFO ]: Backedges is TWOTRACK [2018-06-22 11:13:26,082 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:13:26,082 INFO ]: Difference is false [2018-06-22 11:13:26,083 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:13:26,083 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:13:26,095 INFO ]: Start isEmpty. Operand 15 states. [2018-06-22 11:13:26,106 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:13:26,106 INFO ]: Found error trace [2018-06-22 11:13:26,108 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:13:26,108 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:13:26,114 INFO ]: Analyzing trace with hash -1409059775, now seen corresponding path program 1 times [2018-06-22 11:13:26,116 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:13:26,116 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:13:26,152 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:26,152 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:13:26,152 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:26,196 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:26,349 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:13:26,351 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:13:26,351 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:13:26,352 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:13:26,362 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:13:26,363 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:13:26,365 INFO ]: Start difference. First operand 15 states. Second operand 4 states. [2018-06-22 11:13:26,487 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:13:26,487 INFO ]: Finished difference Result 15 states and 22 transitions. [2018-06-22 11:13:26,488 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:13:26,489 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:13:26,489 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:13:26,498 INFO ]: With dead ends: 15 [2018-06-22 11:13:26,498 INFO ]: Without dead ends: 15 [2018-06-22 11:13:26,500 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:13:26,513 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 11:13:26,551 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 11:13:26,552 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 11:13:26,553 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2018-06-22 11:13:26,554 INFO ]: Start accepts. Automaton has 15 states and 22 transitions. Word has length 9 [2018-06-22 11:13:26,555 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:13:26,555 INFO ]: Abstraction has 15 states and 22 transitions. [2018-06-22 11:13:26,555 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:13:26,555 INFO ]: Start isEmpty. Operand 15 states and 22 transitions. [2018-06-22 11:13:26,557 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:13:26,557 INFO ]: Found error trace [2018-06-22 11:13:26,557 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:13:26,557 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:13:26,558 INFO ]: Analyzing trace with hash 1397489035, now seen corresponding path program 1 times [2018-06-22 11:13:26,558 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:13:26,558 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:13:26,558 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:26,558 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:13:26,559 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:26,575 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:27,063 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:13:27,063 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:13:27,063 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 [2018-06-22 11:13:27,080 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:13:27,116 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:27,124 INFO ]: Computing forward predicates... [2018-06-22 11:13:27,228 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:13:27,252 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:13:27,252 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 11:13:27,253 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:13:27,253 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:13:27,253 INFO ]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:13:27,254 INFO ]: Start difference. First operand 15 states and 22 transitions. Second operand 9 states. [2018-06-22 11:13:27,568 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:13:27,568 INFO ]: Finished difference Result 19 states and 31 transitions. [2018-06-22 11:13:27,568 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:13:27,568 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 11:13:27,569 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:13:27,569 INFO ]: With dead ends: 19 [2018-06-22 11:13:27,569 INFO ]: Without dead ends: 19 [2018-06-22 11:13:27,570 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:13:27,570 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 11:13:27,577 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-06-22 11:13:27,577 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 11:13:27,577 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 26 transitions. [2018-06-22 11:13:27,577 INFO ]: Start accepts. Automaton has 17 states and 26 transitions. Word has length 13 [2018-06-22 11:13:27,578 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:13:27,578 INFO ]: Abstraction has 17 states and 26 transitions. [2018-06-22 11:13:27,578 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:13:27,578 INFO ]: Start isEmpty. Operand 17 states and 26 transitions. [2018-06-22 11:13:27,579 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:13:27,579 INFO ]: Found error trace [2018-06-22 11:13:27,579 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:13:27,579 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:13:27,579 INFO ]: Analyzing trace with hash 1152238182, now seen corresponding path program 1 times [2018-06-22 11:13:27,579 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:13:27,579 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:13:27,580 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:27,580 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:13:27,580 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:27,597 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:27,642 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:13:27,642 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:13:27,642 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:13:27,642 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:13:27,642 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:13:27,642 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:13:27,643 INFO ]: Start difference. First operand 17 states and 26 transitions. Second operand 4 states. [2018-06-22 11:13:27,738 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:13:27,738 INFO ]: Finished difference Result 19 states and 30 transitions. [2018-06-22 11:13:27,738 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:13:27,738 INFO ]: Start accepts. Automaton has 4 states. Word has length 13 [2018-06-22 11:13:27,739 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:13:27,739 INFO ]: With dead ends: 19 [2018-06-22 11:13:27,739 INFO ]: Without dead ends: 19 [2018-06-22 11:13:27,740 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:13:27,740 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 11:13:27,745 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-06-22 11:13:27,745 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 11:13:27,746 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2018-06-22 11:13:27,746 INFO ]: Start accepts. Automaton has 17 states and 25 transitions. Word has length 13 [2018-06-22 11:13:27,746 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:13:27,746 INFO ]: Abstraction has 17 states and 25 transitions. [2018-06-22 11:13:27,746 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:13:27,746 INFO ]: Start isEmpty. Operand 17 states and 25 transitions. [2018-06-22 11:13:27,747 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:13:27,747 INFO ]: Found error trace [2018-06-22 11:13:27,747 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:13:27,747 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:13:27,747 INFO ]: Analyzing trace with hash 1300014339, now seen corresponding path program 1 times [2018-06-22 11:13:27,747 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:13:27,747 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:13:27,748 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:27,748 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:13:27,748 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:27,759 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:27,822 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:13:27,822 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:13:27,823 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 [2018-06-22 11:13:27,834 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:13:27,848 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:27,850 INFO ]: Computing forward predicates... [2018-06-22 11:13:27,940 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:13:27,979 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:13:27,979 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 11:13:27,979 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:13:27,979 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:13:27,979 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:13:27,979 INFO ]: Start difference. First operand 17 states and 25 transitions. Second operand 7 states. [2018-06-22 11:13:28,324 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:13:28,324 INFO ]: Finished difference Result 25 states and 43 transitions. [2018-06-22 11:13:28,325 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:13:28,325 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-22 11:13:28,325 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:13:28,326 INFO ]: With dead ends: 25 [2018-06-22 11:13:28,326 INFO ]: Without dead ends: 25 [2018-06-22 11:13:28,326 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:13:28,327 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 11:13:28,334 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 19. [2018-06-22 11:13:28,334 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:13:28,334 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 29 transitions. [2018-06-22 11:13:28,334 INFO ]: Start accepts. Automaton has 19 states and 29 transitions. Word has length 13 [2018-06-22 11:13:28,335 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:13:28,335 INFO ]: Abstraction has 19 states and 29 transitions. [2018-06-22 11:13:28,335 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:13:28,335 INFO ]: Start isEmpty. Operand 19 states and 29 transitions. [2018-06-22 11:13:28,336 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:13:28,336 INFO ]: Found error trace [2018-06-22 11:13:28,336 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:13:28,336 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:13:28,336 INFO ]: Analyzing trace with hash 400296240, now seen corresponding path program 1 times [2018-06-22 11:13:28,336 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:13:28,336 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:13:28,337 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:28,337 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:13:28,337 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:28,345 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:28,368 INFO ]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:13:28,368 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:13:28,368 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:13:28,369 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:13:28,369 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:13:28,369 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:13:28,369 INFO ]: Start difference. First operand 19 states and 29 transitions. Second operand 4 states. [2018-06-22 11:13:28,604 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:13:28,604 INFO ]: Finished difference Result 36 states and 61 transitions. [2018-06-22 11:13:28,604 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:13:28,604 INFO ]: Start accepts. Automaton has 4 states. Word has length 17 [2018-06-22 11:13:28,604 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:13:28,606 INFO ]: With dead ends: 36 [2018-06-22 11:13:28,606 INFO ]: Without dead ends: 36 [2018-06-22 11:13:28,606 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:13:28,606 INFO ]: Start minimizeSevpa. Operand 36 states. [2018-06-22 11:13:28,614 INFO ]: Finished minimizeSevpa. Reduced states from 36 to 28. [2018-06-22 11:13:28,614 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-22 11:13:28,615 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 46 transitions. [2018-06-22 11:13:28,615 INFO ]: Start accepts. Automaton has 28 states and 46 transitions. Word has length 17 [2018-06-22 11:13:28,615 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:13:28,615 INFO ]: Abstraction has 28 states and 46 transitions. [2018-06-22 11:13:28,615 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:13:28,615 INFO ]: Start isEmpty. Operand 28 states and 46 transitions. [2018-06-22 11:13:28,616 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:13:28,616 INFO ]: Found error trace [2018-06-22 11:13:28,616 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:13:28,616 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:13:28,617 INFO ]: Analyzing trace with hash -1645927347, now seen corresponding path program 1 times [2018-06-22 11:13:28,617 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:13:28,617 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:13:28,617 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:28,617 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:13:28,617 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:28,627 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:28,672 INFO ]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:13:28,672 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:13:28,672 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:13:28,672 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:13:28,672 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:13:28,672 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:13:28,672 INFO ]: Start difference. First operand 28 states and 46 transitions. Second operand 4 states. [2018-06-22 11:13:28,709 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:13:28,709 INFO ]: Finished difference Result 36 states and 57 transitions. [2018-06-22 11:13:28,709 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:13:28,709 INFO ]: Start accepts. Automaton has 4 states. Word has length 17 [2018-06-22 11:13:28,710 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:13:28,710 INFO ]: With dead ends: 36 [2018-06-22 11:13:28,711 INFO ]: Without dead ends: 36 [2018-06-22 11:13:28,711 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:13:28,711 INFO ]: Start minimizeSevpa. Operand 36 states. [2018-06-22 11:13:28,718 INFO ]: Finished minimizeSevpa. Reduced states from 36 to 26. [2018-06-22 11:13:28,718 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-22 11:13:28,719 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 40 transitions. [2018-06-22 11:13:28,719 INFO ]: Start accepts. Automaton has 26 states and 40 transitions. Word has length 17 [2018-06-22 11:13:28,719 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:13:28,719 INFO ]: Abstraction has 26 states and 40 transitions. [2018-06-22 11:13:28,719 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:13:28,719 INFO ]: Start isEmpty. Operand 26 states and 40 transitions. [2018-06-22 11:13:28,720 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:13:28,720 INFO ]: Found error trace [2018-06-22 11:13:28,720 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:13:28,720 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:13:28,721 INFO ]: Analyzing trace with hash -837330219, now seen corresponding path program 2 times [2018-06-22 11:13:28,721 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:13:28,721 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:13:28,721 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:28,721 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:13:28,721 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:28,731 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:28,801 INFO ]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:13:28,801 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:13:28,801 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 [2018-06-22 11:13:28,808 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:13:28,829 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:13:28,829 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:28,830 INFO ]: Computing forward predicates... [2018-06-22 11:13:28,855 INFO ]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:13:28,875 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:13:28,875 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 11:13:28,875 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:13:28,876 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:13:28,876 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:13:28,876 INFO ]: Start difference. First operand 26 states and 40 transitions. Second operand 7 states. [2018-06-22 11:13:29,129 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:13:29,129 INFO ]: Finished difference Result 41 states and 65 transitions. [2018-06-22 11:13:29,129 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:13:29,129 INFO ]: Start accepts. Automaton has 7 states. Word has length 17 [2018-06-22 11:13:29,130 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:13:29,130 INFO ]: With dead ends: 41 [2018-06-22 11:13:29,130 INFO ]: Without dead ends: 29 [2018-06-22 11:13:29,131 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:13:29,131 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-22 11:13:29,137 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-22 11:13:29,137 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-22 11:13:29,138 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 48 transitions. [2018-06-22 11:13:29,138 INFO ]: Start accepts. Automaton has 29 states and 48 transitions. Word has length 17 [2018-06-22 11:13:29,138 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:13:29,138 INFO ]: Abstraction has 29 states and 48 transitions. [2018-06-22 11:13:29,138 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:13:29,138 INFO ]: Start isEmpty. Operand 29 states and 48 transitions. [2018-06-22 11:13:29,139 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:13:29,139 INFO ]: Found error trace [2018-06-22 11:13:29,139 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:13:29,140 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:13:29,140 INFO ]: Analyzing trace with hash -829829691, now seen corresponding path program 2 times [2018-06-22 11:13:29,140 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:13:29,140 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:13:29,140 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:29,140 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:13:29,140 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:29,151 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:29,218 INFO ]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:13:29,218 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:13:29,218 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 [2018-06-22 11:13:29,225 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:13:29,264 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:13:29,264 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:29,268 INFO ]: Computing forward predicates... [2018-06-22 11:13:29,462 INFO ]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:13:29,494 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:13:29,494 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-06-22 11:13:29,494 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:13:29,495 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:13:29,495 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:13:29,495 INFO ]: Start difference. First operand 29 states and 48 transitions. Second operand 9 states. [2018-06-22 11:13:29,642 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:13:29,642 INFO ]: Finished difference Result 41 states and 65 transitions. [2018-06-22 11:13:29,642 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:13:29,642 INFO ]: Start accepts. Automaton has 9 states. Word has length 17 [2018-06-22 11:13:29,642 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:13:29,643 INFO ]: With dead ends: 41 [2018-06-22 11:13:29,643 INFO ]: Without dead ends: 41 [2018-06-22 11:13:29,643 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:13:29,644 INFO ]: Start minimizeSevpa. Operand 41 states. [2018-06-22 11:13:29,651 INFO ]: Finished minimizeSevpa. Reduced states from 41 to 31. [2018-06-22 11:13:29,651 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-22 11:13:29,652 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 48 transitions. [2018-06-22 11:13:29,652 INFO ]: Start accepts. Automaton has 31 states and 48 transitions. Word has length 17 [2018-06-22 11:13:29,652 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:13:29,652 INFO ]: Abstraction has 31 states and 48 transitions. [2018-06-22 11:13:29,652 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:13:29,652 INFO ]: Start isEmpty. Operand 31 states and 48 transitions. [2018-06-22 11:13:29,653 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:13:29,653 INFO ]: Found error trace [2018-06-22 11:13:29,653 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:13:29,653 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:13:29,653 INFO ]: Analyzing trace with hash -21232563, now seen corresponding path program 2 times [2018-06-22 11:13:29,653 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:13:29,653 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:13:29,654 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:29,654 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:13:29,654 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:29,667 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:29,773 INFO ]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:13:29,773 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:13:29,773 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 [2018-06-22 11:13:29,781 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:13:29,815 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:13:29,815 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:29,818 INFO ]: Computing forward predicates... [2018-06-22 11:13:29,870 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:13:29,890 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:13:29,890 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2018-06-22 11:13:29,890 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:13:29,890 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:13:29,890 INFO ]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:13:29,890 INFO ]: Start difference. First operand 31 states and 48 transitions. Second operand 10 states. [2018-06-22 11:13:30,019 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:13:30,019 INFO ]: Finished difference Result 45 states and 66 transitions. [2018-06-22 11:13:30,020 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:13:30,020 INFO ]: Start accepts. Automaton has 10 states. Word has length 17 [2018-06-22 11:13:30,020 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:13:30,024 INFO ]: With dead ends: 45 [2018-06-22 11:13:30,024 INFO ]: Without dead ends: 45 [2018-06-22 11:13:30,024 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:13:30,024 INFO ]: Start minimizeSevpa. Operand 45 states. [2018-06-22 11:13:30,031 INFO ]: Finished minimizeSevpa. Reduced states from 45 to 33. [2018-06-22 11:13:30,031 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-22 11:13:30,032 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2018-06-22 11:13:30,032 INFO ]: Start accepts. Automaton has 33 states and 50 transitions. Word has length 17 [2018-06-22 11:13:30,032 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:13:30,032 INFO ]: Abstraction has 33 states and 50 transitions. [2018-06-22 11:13:30,032 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:13:30,032 INFO ]: Start isEmpty. Operand 33 states and 50 transitions. [2018-06-22 11:13:30,033 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:13:30,033 INFO ]: Found error trace [2018-06-22 11:13:30,033 INFO ]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:13:30,033 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:13:30,033 INFO ]: Analyzing trace with hash 201160599, now seen corresponding path program 3 times [2018-06-22 11:13:30,033 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:13:30,033 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:13:30,034 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:30,034 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:13:30,034 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:30,044 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:30,125 INFO ]: Checked inductivity of 19 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:13:30,125 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:13:30,125 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 [2018-06-22 11:13:30,131 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:13:30,169 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 11:13:30,169 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:30,171 INFO ]: Computing forward predicates... [2018-06-22 11:13:30,212 INFO ]: Checked inductivity of 19 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:13:30,231 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:13:30,231 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-06-22 11:13:30,232 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:13:30,232 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:13:30,232 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:13:30,232 INFO ]: Start difference. First operand 33 states and 50 transitions. Second operand 9 states. [2018-06-22 11:13:30,353 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:13:30,353 INFO ]: Finished difference Result 35 states and 51 transitions. [2018-06-22 11:13:30,353 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:13:30,354 INFO ]: Start accepts. Automaton has 9 states. Word has length 21 [2018-06-22 11:13:30,354 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:13:30,354 INFO ]: With dead ends: 35 [2018-06-22 11:13:30,354 INFO ]: Without dead ends: 26 [2018-06-22 11:13:30,355 INFO ]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:13:30,355 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-22 11:13:30,357 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-06-22 11:13:30,358 INFO ]: Start removeUnreachable. Operand 24 states. [2018-06-22 11:13:30,359 INFO ]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-06-22 11:13:30,359 INFO ]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 21 [2018-06-22 11:13:30,359 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:13:30,359 INFO ]: Abstraction has 24 states and 34 transitions. [2018-06-22 11:13:30,359 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:13:30,359 INFO ]: Start isEmpty. Operand 24 states and 34 transitions. [2018-06-22 11:13:30,360 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:13:30,360 INFO ]: Found error trace [2018-06-22 11:13:30,360 INFO ]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:13:30,360 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:13:30,360 INFO ]: Analyzing trace with hash 1700390570, now seen corresponding path program 1 times [2018-06-22 11:13:30,360 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:13:30,360 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:13:30,361 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:30,361 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:13:30,361 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:13:30,367 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:30,414 INFO ]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:13:30,414 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:13:30,414 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 [2018-06-22 11:13:30,422 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:13:30,441 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:13:30,443 INFO ]: Computing forward predicates... [2018-06-22 11:13:30,450 INFO ]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:13:30,470 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:13:30,470 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 11:13:30,470 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:13:30,470 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:13:30,470 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:13:30,470 INFO ]: Start difference. First operand 24 states and 34 transitions. Second operand 4 states. [2018-06-22 11:13:30,516 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:13:30,516 INFO ]: Finished difference Result 16 states and 21 transitions. [2018-06-22 11:13:30,516 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:13:30,516 INFO ]: Start accepts. Automaton has 4 states. Word has length 21 [2018-06-22 11:13:30,516 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:13:30,516 INFO ]: With dead ends: 16 [2018-06-22 11:13:30,516 INFO ]: Without dead ends: 0 [2018-06-22 11:13:30,516 INFO ]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:13:30,516 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:13:30,516 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:13:30,517 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:13:30,517 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:13:30,517 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 11:13:30,517 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:13:30,517 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:13:30,517 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:13:30,517 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:13:30,517 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:13:30,521 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:13:30 BoogieIcfgContainer [2018-06-22 11:13:30,521 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:13:30,521 INFO ]: Toolchain (without parser) took 4871.72 ms. Allocated memory was 309.3 MB in the beginning and 338.7 MB in the end (delta: 29.4 MB). Free memory was 265.7 MB in the beginning and 213.9 MB in the end (delta: 51.8 MB). Peak memory consumption was 81.2 MB. Max. memory is 3.6 GB. [2018-06-22 11:13:30,523 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:13:30,523 INFO ]: ChcToBoogie took 48.51 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 261.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:13:30,523 INFO ]: Boogie Preprocessor took 33.97 ms. Allocated memory is still 309.3 MB. Free memory is still 261.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:13:30,524 INFO ]: RCFGBuilder took 274.36 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 253.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:13:30,524 INFO ]: TraceAbstraction took 4505.69 ms. Allocated memory was 309.3 MB in the beginning and 338.7 MB in the end (delta: 29.4 MB). Free memory was 253.7 MB in the beginning and 213.9 MB in the end (delta: 39.8 MB). Peak memory consumption was 69.2 MB. Max. memory is 3.6 GB. [2018-06-22 11:13:30,527 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 48.51 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 261.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 33.97 ms. Allocated memory is still 309.3 MB. Free memory is still 261.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 274.36 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 253.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4505.69 ms. Allocated memory was 309.3 MB in the beginning and 338.7 MB in the end (delta: 29.4 MB). Free memory was 253.7 MB in the beginning and 213.9 MB in the end (delta: 39.8 MB). Peak memory consumption was 69.2 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 3 procedures, 15 locations, 1 error locations. SAFE Result, 4.4s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 199 SDtfs, 56 SDslu, 354 SDs, 0 SdLazy, 570 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 52 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 294 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 276 ConstructedInterpolants, 0 QuantifiedInterpolants, 12448 SizeOfPredicates, 28 NumberOfNonLiveVariables, 789 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 121/167 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/010-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-13-30-538.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/010-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-13-30-538.csv Received shutdown request...