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/sally-chc-benchmarks/misc/frolloc_lifo_prop1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 12:36:25,452 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 12:36:25,454 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 12:36:25,465 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 12:36:25,465 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 12:36:25,466 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 12:36:25,467 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 12:36:25,469 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 12:36:25,471 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 12:36:25,471 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 12:36:25,472 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 12:36:25,473 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 12:36:25,473 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 12:36:25,474 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 12:36:25,475 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 12:36:25,476 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 12:36:25,478 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 12:36:25,480 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 12:36:25,481 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 12:36:25,482 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 12:36:25,484 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 12:36:25,486 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 12:36:25,486 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 12:36:25,487 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 12:36:25,487 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 12:36:25,488 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 12:36:25,489 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 12:36:25,490 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 12:36:25,491 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 12:36:25,491 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 12:36:25,492 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 12:36:25,492 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 12:36:25,493 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 12:36:25,494 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 12:36:25,494 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 12:36:25,495 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 12:36:25,508 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 12:36:25,508 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 12:36:25,509 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 12:36:25,509 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 12:36:25,510 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 12:36:25,510 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 12:36:25,510 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 12:36:25,510 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 12:36:25,511 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 12:36:25,511 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 12:36:25,511 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 12:36:25,511 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 12:36:25,511 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 12:36:25,512 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 12:36:25,512 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 12:36:25,512 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 12:36:25,512 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 12:36:25,512 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 12:36:25,513 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 12:36:25,514 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 12:36:25,514 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 12:36:25,561 INFO ]: Repository-Root is: /tmp [2018-06-22 12:36:25,577 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 12:36:25,583 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 12:36:25,584 INFO ]: Initializing SmtParser... [2018-06-22 12:36:25,585 INFO ]: SmtParser initialized [2018-06-22 12:36:25,586 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/sally-chc-benchmarks/misc/frolloc_lifo_prop1.smt2 [2018-06-22 12:36:25,587 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 12:36:25,678 INFO ]: Executing SMT file /storage/chc-comp/sally-chc-benchmarks/misc/frolloc_lifo_prop1.smt2 unknown [2018-06-22 12:36:26,018 INFO ]: Succesfully executed SMT file /storage/chc-comp/sally-chc-benchmarks/misc/frolloc_lifo_prop1.smt2 [2018-06-22 12:36:26,023 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 12:36:26,029 INFO ]: Walking toolchain with 4 elements. [2018-06-22 12:36:26,029 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 12:36:26,029 INFO ]: Initializing ChcToBoogie... [2018-06-22 12:36:26,030 INFO ]: ChcToBoogie initialized [2018-06-22 12:36:26,036 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:36:26" (1/1) ... [2018-06-22 12:36:26,090 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:36:26 Unit [2018-06-22 12:36:26,090 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 12:36:26,091 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 12:36:26,091 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 12:36:26,091 INFO ]: Boogie Preprocessor initialized [2018-06-22 12:36:26,113 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:36:26" (1/1) ... [2018-06-22 12:36:26,113 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:36:26" (1/1) ... [2018-06-22 12:36:26,135 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:36:26" (1/1) ... [2018-06-22 12:36:26,135 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:36:26" (1/1) ... [2018-06-22 12:36:26,148 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:36:26" (1/1) ... [2018-06-22 12:36:26,150 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:36:26" (1/1) ... [2018-06-22 12:36:26,160 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:36:26" (1/1) ... [2018-06-22 12:36:26,163 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 12:36:26,164 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 12:36:26,164 INFO ]: Initializing RCFGBuilder... [2018-06-22 12:36:26,164 INFO ]: RCFGBuilder initialized [2018-06-22 12:36:26,165 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:36:26" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 12:36:26,195 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 12:36:26,195 INFO ]: Found specification of procedure False [2018-06-22 12:36:26,195 INFO ]: Found implementation of procedure False [2018-06-22 12:36:26,195 INFO ]: Specification and implementation of procedure invariant given in one single declaration [2018-06-22 12:36:26,195 INFO ]: Found specification of procedure invariant [2018-06-22 12:36:26,195 INFO ]: Found implementation of procedure invariant [2018-06-22 12:36:26,195 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 12:36:26,195 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 12:36:26,195 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 12:36:26,551 INFO ]: Using library mode [2018-06-22 12:36:26,552 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:36:26 BoogieIcfgContainer [2018-06-22 12:36:26,552 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 12:36:26,553 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 12:36:26,553 INFO ]: Initializing TraceAbstraction... [2018-06-22 12:36:26,562 INFO ]: TraceAbstraction initialized [2018-06-22 12:36:26,562 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:36:26" (1/3) ... [2018-06-22 12:36:26,563 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc99e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:36:26, skipping insertion in model container [2018-06-22 12:36:26,563 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:36:26" (2/3) ... [2018-06-22 12:36:26,563 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc99e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:36:26, skipping insertion in model container [2018-06-22 12:36:26,563 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:36:26" (3/3) ... [2018-06-22 12:36:26,566 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 12:36:26,576 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 12:36:26,586 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 12:36:26,628 INFO ]: Using default assertion order modulation [2018-06-22 12:36:26,629 INFO ]: Interprodecural is true [2018-06-22 12:36:26,629 INFO ]: Hoare is false [2018-06-22 12:36:26,629 INFO ]: Compute interpolants for FPandBP [2018-06-22 12:36:26,629 INFO ]: Backedges is TWOTRACK [2018-06-22 12:36:26,629 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 12:36:26,629 INFO ]: Difference is false [2018-06-22 12:36:26,629 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 12:36:26,629 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 12:36:26,641 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 12:36:26,650 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 12:36:26,650 INFO ]: Found error trace [2018-06-22 12:36:26,651 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:36:26,651 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:36:26,655 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 12:36:26,657 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:36:26,657 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:36:26,697 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:36:26,697 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:36:26,697 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:36:26,753 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:36:26,882 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 12:36:26,884 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 12:36:26,884 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 12:36:26,886 INFO ]: Interpolant automaton has 4 states [2018-06-22 12:36:26,900 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 12:36:26,900 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 12:36:26,902 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 12:36:27,029 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:36:27,029 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 12:36:27,030 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 12:36:27,031 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 12:36:27,031 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:36:27,042 INFO ]: With dead ends: 13 [2018-06-22 12:36:27,043 INFO ]: Without dead ends: 13 [2018-06-22 12:36:27,044 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 12:36:27,059 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 12:36:27,087 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 12:36:27,089 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 12:36:27,089 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 12:36:27,091 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 12:36:27,091 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:36:27,091 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 12:36:27,091 INFO ]: Interpolant automaton has 4 states. [2018-06-22 12:36:27,091 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 12:36:27,092 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 12:36:27,092 INFO ]: Found error trace [2018-06-22 12:36:27,092 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:36:27,093 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:36:27,093 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 12:36:27,093 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:36:27,093 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:36:27,095 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:36:27,095 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:36:27,095 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:36:27,243 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:36:27,547 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 12:36:27,547 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 12:36:27,547 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 12:36:27,578 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:36:27,690 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:36:27,700 INFO ]: Computing forward predicates... [2018-06-22 12:36:28,003 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 12:36:28,039 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 12:36:28,040 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 12:36:28,040 INFO ]: Interpolant automaton has 8 states [2018-06-22 12:36:28,040 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 12:36:28,040 INFO ]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-06-22 12:36:28,041 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 12:36:28,293 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:36:28,293 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 12:36:28,295 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 12:36:28,295 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 12:36:28,295 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:36:28,296 INFO ]: With dead ends: 15 [2018-06-22 12:36:28,296 INFO ]: Without dead ends: 15 [2018-06-22 12:36:28,297 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-06-22 12:36:28,297 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 12:36:28,302 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 12:36:28,302 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 12:36:28,303 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 12:36:28,303 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 12:36:28,303 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:36:28,303 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 12:36:28,303 INFO ]: Interpolant automaton has 8 states. [2018-06-22 12:36:28,303 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 12:36:28,304 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 12:36:28,304 INFO ]: Found error trace [2018-06-22 12:36:28,304 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:36:28,304 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:36:28,304 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 12:36:28,304 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:36:28,304 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:36:28,307 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:36:28,307 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:36:28,307 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:36:28,396 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:36:29,001 WARN ]: Spent 296.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-06-22 12:36:29,150 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 12:36:29,150 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 12:36:29,150 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 12:36:29,159 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 12:36:29,273 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 12:36:29,273 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:36:29,278 INFO ]: Computing forward predicates... [2018-06-22 12:36:29,615 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2018-06-22 12:36:29,742 INFO ]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 12:36:29,769 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 12:36:29,769 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 12:36:29,769 INFO ]: Interpolant automaton has 12 states [2018-06-22 12:36:29,770 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 12:36:29,770 INFO ]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-06-22 12:36:29,770 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 12:36:29,936 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:36:29,936 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-22 12:36:29,936 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 12:36:29,937 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 12:36:29,937 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:36:29,937 INFO ]: With dead ends: 11 [2018-06-22 12:36:29,937 INFO ]: Without dead ends: 0 [2018-06-22 12:36:29,938 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2018-06-22 12:36:29,938 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 12:36:29,938 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 12:36:29,938 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 12:36:29,938 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 12:36:29,938 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-22 12:36:29,938 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:36:29,938 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 12:36:29,938 INFO ]: Interpolant automaton has 12 states. [2018-06-22 12:36:29,938 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 12:36:29,939 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 12:36:29,943 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:36:29 BoogieIcfgContainer [2018-06-22 12:36:29,943 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 12:36:29,944 INFO ]: Toolchain (without parser) took 3921.04 ms. Allocated memory was 309.3 MB in the beginning and 347.1 MB in the end (delta: 37.7 MB). Free memory was 253.8 MB in the beginning and 311.8 MB in the end (delta: -58.0 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 12:36:29,945 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 12:36:29,945 INFO ]: ChcToBoogie took 61.03 ms. Allocated memory is still 309.3 MB. Free memory was 253.8 MB in the beginning and 251.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 12:36:29,946 INFO ]: Boogie Preprocessor took 72.28 ms. Allocated memory is still 309.3 MB. Free memory was 251.8 MB in the beginning and 249.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 12:36:29,946 INFO ]: RCFGBuilder took 388.06 ms. Allocated memory is still 309.3 MB. Free memory was 249.7 MB in the beginning and 227.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 3.6 GB. [2018-06-22 12:36:29,947 INFO ]: TraceAbstraction took 3390.12 ms. Allocated memory was 309.3 MB in the beginning and 347.1 MB in the end (delta: 37.7 MB). Free memory was 227.8 MB in the beginning and 311.8 MB in the end (delta: -84.0 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 12:36:29,950 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 61.03 ms. Allocated memory is still 309.3 MB. Free memory was 253.8 MB in the beginning and 251.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 72.28 ms. Allocated memory is still 309.3 MB. Free memory was 251.8 MB in the beginning and 249.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 388.06 ms. Allocated memory is still 309.3 MB. Free memory was 249.7 MB in the beginning and 227.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3390.12 ms. Allocated memory was 309.3 MB in the beginning and 347.1 MB in the end (delta: 37.7 MB). Free memory was 227.8 MB in the beginning and 311.8 MB in the end (delta: -84.0 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. SAFE Result, 3.3s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 10 SDslu, 52 SDs, 0 SdLazy, 40 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 3180 SizeOfPredicates, 16 NumberOfNonLiveVariables, 727 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 9/26 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/frolloc_lifo_prop1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_12-36-29-962.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/frolloc_lifo_prop1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_12-36-29-962.csv Received shutdown request...