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_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/reve/016b-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:28:50,651 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:28:50,654 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:28:50,668 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:28:50,669 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:28:50,669 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:28:50,670 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:28:50,672 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:28:50,674 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:28:50,674 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:28:50,675 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:28:50,675 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:28:50,677 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:28:50,678 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:28:50,679 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:28:50,680 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:28:50,684 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:28:50,686 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:28:50,689 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:28:50,690 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:28:50,691 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:28:50,694 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:28:50,694 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:28:50,694 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:28:50,695 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:28:50,696 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:28:50,697 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:28:50,697 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:28:50,698 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:28:50,699 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:28:50,706 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:28:50,707 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:28:50,707 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:28:50,708 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:28:50,708 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:28:50,709 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:28:50,728 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:28:50,729 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:28:50,730 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:28:50,730 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:28:50,731 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:28:50,731 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:28:50,731 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:28:50,732 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:28:50,732 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:28:50,732 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:28:50,732 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:28:50,732 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:28:50,733 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:28:50,733 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:28:50,733 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:28:50,733 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:28:50,733 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:28:50,735 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:28:50,735 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:28:50,798 INFO ]: Repository-Root is: /tmp [2018-06-22 01:28:50,817 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:28:50,823 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:28:50,824 INFO ]: Initializing SmtParser... [2018-06-22 01:28:50,825 INFO ]: SmtParser initialized [2018-06-22 01:28:50,825 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/016b-horn.smt2 [2018-06-22 01:28:50,826 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 01:28:50,917 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/016b-horn.smt2 unknown [2018-06-22 01:28:51,059 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/016b-horn.smt2 [2018-06-22 01:28:51,064 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:28:51,069 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:28:51,069 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:28:51,069 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:28:51,069 INFO ]: ChcToBoogie initialized [2018-06-22 01:28:51,073 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:28:51" (1/1) ... [2018-06-22 01:28:51,120 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:51 Unit [2018-06-22 01:28:51,120 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:28:51,121 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:28:51,121 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:28:51,121 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:28:51,141 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:51" (1/1) ... [2018-06-22 01:28:51,141 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:51" (1/1) ... [2018-06-22 01:28:51,147 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:51" (1/1) ... [2018-06-22 01:28:51,147 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:51" (1/1) ... [2018-06-22 01:28:51,151 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:51" (1/1) ... [2018-06-22 01:28:51,154 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:51" (1/1) ... [2018-06-22 01:28:51,154 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:51" (1/1) ... [2018-06-22 01:28:51,156 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:28:51,156 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:28:51,156 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:28:51,157 INFO ]: RCFGBuilder initialized [2018-06-22 01:28:51,161 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:51" (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 01:28:51,177 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:28:51,177 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:28:51,177 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:28:51,177 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:28:51,177 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:28:51,177 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 01:28:51,443 INFO ]: Using library mode [2018-06-22 01:28:51,444 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:28:51 BoogieIcfgContainer [2018-06-22 01:28:51,444 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:28:51,445 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:28:51,445 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:28:51,457 INFO ]: TraceAbstraction initialized [2018-06-22 01:28:51,458 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:28:51" (1/3) ... [2018-06-22 01:28:51,459 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c17d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:28:51, skipping insertion in model container [2018-06-22 01:28:51,459 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:51" (2/3) ... [2018-06-22 01:28:51,459 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c17d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:28:51, skipping insertion in model container [2018-06-22 01:28:51,459 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:28:51" (3/3) ... [2018-06-22 01:28:51,461 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:28:51,481 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:28:51,488 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:28:51,563 INFO ]: Using default assertion order modulation [2018-06-22 01:28:51,564 INFO ]: Interprodecural is true [2018-06-22 01:28:51,564 INFO ]: Hoare is false [2018-06-22 01:28:51,564 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:28:51,564 INFO ]: Backedges is TWOTRACK [2018-06-22 01:28:51,564 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:28:51,564 INFO ]: Difference is false [2018-06-22 01:28:51,564 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:28:51,564 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:28:51,577 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 01:28:51,585 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:28:51,585 INFO ]: Found error trace [2018-06-22 01:28:51,586 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:28:51,586 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:28:51,590 INFO ]: Analyzing trace with hash -204663978, now seen corresponding path program 1 times [2018-06-22 01:28:51,591 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:28:51,592 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:28:51,625 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:51,625 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:51,625 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:51,671 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:51,747 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:51,748 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:28:51,748 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:28:51,749 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:28:51,760 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:28:51,760 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:28:51,762 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 01:28:51,826 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:28:51,827 INFO ]: Finished difference Result 9 states and 13 transitions. [2018-06-22 01:28:51,827 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:28:51,828 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 01:28:51,829 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:28:51,836 INFO ]: With dead ends: 9 [2018-06-22 01:28:51,836 INFO ]: Without dead ends: 9 [2018-06-22 01:28:51,838 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:28:51,854 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 01:28:51,869 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 01:28:51,870 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 01:28:51,870 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2018-06-22 01:28:51,872 INFO ]: Start accepts. Automaton has 9 states and 13 transitions. Word has length 7 [2018-06-22 01:28:51,872 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:28:51,872 INFO ]: Abstraction has 9 states and 13 transitions. [2018-06-22 01:28:51,872 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:28:51,872 INFO ]: Start isEmpty. Operand 9 states and 13 transitions. [2018-06-22 01:28:51,872 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:28:51,872 INFO ]: Found error trace [2018-06-22 01:28:51,872 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:28:51,872 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:28:51,873 INFO ]: Analyzing trace with hash -2057099186, now seen corresponding path program 1 times [2018-06-22 01:28:51,873 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:28:51,873 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:28:51,873 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:51,874 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:51,874 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:51,886 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:52,001 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:52,001 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:28:52,001 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 01:28:52,011 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:52,052 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:52,059 INFO ]: Computing forward predicates... [2018-06-22 01:28:52,104 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:52,138 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:28:52,138 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-06-22 01:28:52,139 INFO ]: Interpolant automaton has 5 states [2018-06-22 01:28:52,139 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 01:28:52,139 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:28:52,139 INFO ]: Start difference. First operand 9 states and 13 transitions. Second operand 5 states. [2018-06-22 01:28:52,507 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:28:52,507 INFO ]: Finished difference Result 11 states and 18 transitions. [2018-06-22 01:28:52,508 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:28:52,508 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 01:28:52,508 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:28:52,508 INFO ]: With dead ends: 11 [2018-06-22 01:28:52,508 INFO ]: Without dead ends: 11 [2018-06-22 01:28:52,509 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-22 01:28:52,509 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 01:28:52,510 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 01:28:52,510 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 01:28:52,510 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 18 transitions. [2018-06-22 01:28:52,510 INFO ]: Start accepts. Automaton has 11 states and 18 transitions. Word has length 8 [2018-06-22 01:28:52,511 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:28:52,511 INFO ]: Abstraction has 11 states and 18 transitions. [2018-06-22 01:28:52,511 INFO ]: Interpolant automaton has 5 states. [2018-06-22 01:28:52,511 INFO ]: Start isEmpty. Operand 11 states and 18 transitions. [2018-06-22 01:28:52,511 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:28:52,511 INFO ]: Found error trace [2018-06-22 01:28:52,511 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:28:52,511 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:28:52,511 INFO ]: Analyzing trace with hash -2048787497, now seen corresponding path program 1 times [2018-06-22 01:28:52,511 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:28:52,511 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:28:52,512 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:52,512 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:52,512 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:52,524 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:52,606 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:52,606 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:28:52,606 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 01:28:52,614 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:52,641 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:52,643 INFO ]: Computing forward predicates... [2018-06-22 01:28:52,689 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:52,719 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:28:52,719 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2018-06-22 01:28:52,720 INFO ]: Interpolant automaton has 6 states [2018-06-22 01:28:52,720 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 01:28:52,720 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-22 01:28:52,720 INFO ]: Start difference. First operand 11 states and 18 transitions. Second operand 6 states. [2018-06-22 01:28:52,939 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:28:52,939 INFO ]: Finished difference Result 15 states and 28 transitions. [2018-06-22 01:28:52,940 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 01:28:52,940 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 01:28:52,940 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:28:52,940 INFO ]: With dead ends: 15 [2018-06-22 01:28:52,940 INFO ]: Without dead ends: 15 [2018-06-22 01:28:52,941 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-06-22 01:28:52,941 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 01:28:52,943 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 12. [2018-06-22 01:28:52,943 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 01:28:52,943 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 20 transitions. [2018-06-22 01:28:52,943 INFO ]: Start accepts. Automaton has 12 states and 20 transitions. Word has length 8 [2018-06-22 01:28:52,943 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:28:52,944 INFO ]: Abstraction has 12 states and 20 transitions. [2018-06-22 01:28:52,944 INFO ]: Interpolant automaton has 6 states. [2018-06-22 01:28:52,944 INFO ]: Start isEmpty. Operand 12 states and 20 transitions. [2018-06-22 01:28:52,944 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 01:28:52,944 INFO ]: Found error trace [2018-06-22 01:28:52,944 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:28:52,944 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:28:52,944 INFO ]: Analyzing trace with hash -1308612146, now seen corresponding path program 1 times [2018-06-22 01:28:52,944 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:28:52,944 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:28:52,945 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:52,945 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:52,945 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:52,967 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:53,096 INFO ]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 01:28:53,096 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:28:53,096 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 01:28:53,111 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:53,147 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:53,149 INFO ]: Computing forward predicates... [2018-06-22 01:28:53,298 INFO ]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:53,333 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:28:53,333 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 01:28:53,333 INFO ]: Interpolant automaton has 8 states [2018-06-22 01:28:53,333 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 01:28:53,333 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 01:28:53,334 INFO ]: Start difference. First operand 12 states and 20 transitions. Second operand 8 states. [2018-06-22 01:28:53,817 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:28:53,817 INFO ]: Finished difference Result 18 states and 32 transitions. [2018-06-22 01:28:53,818 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 01:28:53,818 INFO ]: Start accepts. Automaton has 8 states. Word has length 10 [2018-06-22 01:28:53,818 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:28:53,819 INFO ]: With dead ends: 18 [2018-06-22 01:28:53,819 INFO ]: Without dead ends: 11 [2018-06-22 01:28:53,819 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2018-06-22 01:28:53,819 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 01:28:53,820 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 01:28:53,820 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 01:28:53,821 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2018-06-22 01:28:53,821 INFO ]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 10 [2018-06-22 01:28:53,821 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:28:53,821 INFO ]: Abstraction has 11 states and 15 transitions. [2018-06-22 01:28:53,821 INFO ]: Interpolant automaton has 8 states. [2018-06-22 01:28:53,821 INFO ]: Start isEmpty. Operand 11 states and 15 transitions. [2018-06-22 01:28:53,821 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 01:28:53,821 INFO ]: Found error trace [2018-06-22 01:28:53,821 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:28:53,821 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:28:53,822 INFO ]: Analyzing trace with hash -1911013609, now seen corresponding path program 1 times [2018-06-22 01:28:53,822 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:28:53,822 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:28:53,822 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:53,822 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:53,823 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:53,846 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:53,907 INFO ]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 01:28:53,907 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:28:53,907 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 01:28:53,914 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:53,949 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:53,951 INFO ]: Computing forward predicates... [2018-06-22 01:28:54,198 INFO ]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:54,219 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:28:54,219 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2018-06-22 01:28:54,219 INFO ]: Interpolant automaton has 9 states [2018-06-22 01:28:54,219 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 01:28:54,219 INFO ]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-06-22 01:28:54,219 INFO ]: Start difference. First operand 11 states and 15 transitions. Second operand 9 states. [2018-06-22 01:28:54,495 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:28:54,495 INFO ]: Finished difference Result 12 states and 21 transitions. [2018-06-22 01:28:54,496 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 01:28:54,496 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-22 01:28:54,496 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:28:54,496 INFO ]: With dead ends: 12 [2018-06-22 01:28:54,496 INFO ]: Without dead ends: 0 [2018-06-22 01:28:54,496 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2018-06-22 01:28:54,496 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:28:54,496 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:28:54,496 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:28:54,496 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:28:54,496 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-06-22 01:28:54,496 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:28:54,496 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:28:54,496 INFO ]: Interpolant automaton has 9 states. [2018-06-22 01:28:54,497 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:28:54,497 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:28:54,500 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:28:54 BoogieIcfgContainer [2018-06-22 01:28:54,500 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:28:54,501 INFO ]: Toolchain (without parser) took 3436.54 ms. Allocated memory was 308.8 MB in the beginning and 326.1 MB in the end (delta: 17.3 MB). Free memory was 265.2 MB in the beginning and 211.2 MB in the end (delta: 54.0 MB). Peak memory consumption was 71.3 MB. Max. memory is 3.6 GB. [2018-06-22 01:28:54,502 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:28:54,503 INFO ]: ChcToBoogie took 51.32 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 263.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:28:54,503 INFO ]: Boogie Preprocessor took 35.13 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 261.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:28:54,504 INFO ]: RCFGBuilder took 287.52 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 253.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:28:54,504 INFO ]: TraceAbstraction took 3055.24 ms. Allocated memory was 308.8 MB in the beginning and 326.1 MB in the end (delta: 17.3 MB). Free memory was 253.2 MB in the beginning and 211.2 MB in the end (delta: 42.0 MB). Peak memory consumption was 59.3 MB. Max. memory is 3.6 GB. [2018-06-22 01:28:54,508 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 51.32 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 263.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 35.13 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 261.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 287.52 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 253.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3055.24 ms. Allocated memory was 308.8 MB in the beginning and 326.1 MB in the end (delta: 17.3 MB). Free memory was 253.2 MB in the beginning and 211.2 MB in the end (delta: 42.0 MB). Peak memory consumption was 59.3 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. SAFE Result, 2.9s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 6 SDslu, 70 SDs, 0 SdLazy, 127 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=3, 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 1954 SizeOfPredicates, 16 NumberOfNonLiveVariables, 456 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 12/28 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/016b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-28-54-519.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/016b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-28-54-519.csv Received shutdown request...