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/015b-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:28:45,518 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:28:45,520 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:28:45,533 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:28:45,534 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:28:45,534 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:28:45,536 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:28:45,538 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:28:45,539 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:28:45,540 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:28:45,542 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:28:45,542 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:28:45,543 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:28:45,544 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:28:45,544 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:28:45,547 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:28:45,549 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:28:45,558 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:28:45,559 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:28:45,560 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:28:45,561 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:28:45,567 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:28:45,567 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:28:45,567 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:28:45,568 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:28:45,569 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:28:45,569 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:28:45,572 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:28:45,573 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:28:45,573 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:28:45,574 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:28:45,574 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:28:45,574 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:28:45,579 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:28:45,580 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:28:45,580 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:28:45,596 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:28:45,596 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:28:45,596 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:28:45,597 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:28:45,598 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:28:45,598 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:28:45,599 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:28:45,599 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:28:45,599 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:28:45,599 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:28:45,599 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:28:45,599 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:28:45,600 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:28:45,600 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:28:45,600 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:28:45,600 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:28:45,600 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:28:45,602 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:28:45,602 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:28:45,644 INFO ]: Repository-Root is: /tmp [2018-06-22 01:28:45,658 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:28:45,661 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:28:45,664 INFO ]: Initializing SmtParser... [2018-06-22 01:28:45,664 INFO ]: SmtParser initialized [2018-06-22 01:28:45,665 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/015b-horn.smt2 [2018-06-22 01:28:45,666 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 01:28:45,752 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/015b-horn.smt2 unknown [2018-06-22 01:28:45,918 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/015b-horn.smt2 [2018-06-22 01:28:45,922 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:28:45,936 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:28:45,937 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:28:45,937 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:28:45,937 INFO ]: ChcToBoogie initialized [2018-06-22 01:28:45,940 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:28:45" (1/1) ... [2018-06-22 01:28:45,990 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:45 Unit [2018-06-22 01:28:45,991 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:28:45,991 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:28:45,991 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:28:45,991 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:28:46,012 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:45" (1/1) ... [2018-06-22 01:28:46,013 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:45" (1/1) ... [2018-06-22 01:28:46,023 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:45" (1/1) ... [2018-06-22 01:28:46,023 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:45" (1/1) ... [2018-06-22 01:28:46,028 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:45" (1/1) ... [2018-06-22 01:28:46,030 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:45" (1/1) ... [2018-06-22 01:28:46,043 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:45" (1/1) ... [2018-06-22 01:28:46,045 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:28:46,045 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:28:46,045 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:28:46,045 INFO ]: RCFGBuilder initialized [2018-06-22 01:28:46,046 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:45" (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 01:28:46,073 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:28:46,073 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:28:46,073 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:28:46,073 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:28:46,073 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:28:46,073 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 01:28:46,461 INFO ]: Using library mode [2018-06-22 01:28:46,462 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:28:46 BoogieIcfgContainer [2018-06-22 01:28:46,462 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:28:46,463 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:28:46,463 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:28:46,467 INFO ]: TraceAbstraction initialized [2018-06-22 01:28:46,467 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:28:45" (1/3) ... [2018-06-22 01:28:46,468 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e24cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:28:46, skipping insertion in model container [2018-06-22 01:28:46,468 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:45" (2/3) ... [2018-06-22 01:28:46,468 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e24cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:28:46, skipping insertion in model container [2018-06-22 01:28:46,468 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:28:46" (3/3) ... [2018-06-22 01:28:46,470 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:28:46,479 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:28:46,487 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:28:46,549 INFO ]: Using default assertion order modulation [2018-06-22 01:28:46,550 INFO ]: Interprodecural is true [2018-06-22 01:28:46,550 INFO ]: Hoare is false [2018-06-22 01:28:46,550 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:28:46,550 INFO ]: Backedges is TWOTRACK [2018-06-22 01:28:46,550 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:28:46,550 INFO ]: Difference is false [2018-06-22 01:28:46,550 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:28:46,550 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:28:46,571 INFO ]: Start isEmpty. Operand 12 states. [2018-06-22 01:28:46,584 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-22 01:28:46,584 INFO ]: Found error trace [2018-06-22 01:28:46,585 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-22 01:28:46,586 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:28:46,590 INFO ]: Analyzing trace with hash -1603411828, now seen corresponding path program 1 times [2018-06-22 01:28:46,593 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:28:46,593 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:28:46,633 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:46,634 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:46,634 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:46,667 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:46,699 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:46,701 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:28:46,701 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 01:28:46,703 INFO ]: Interpolant automaton has 2 states [2018-06-22 01:28:46,719 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 01:28:46,720 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 01:28:46,723 INFO ]: Start difference. First operand 12 states. Second operand 2 states. [2018-06-22 01:28:46,747 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:28:46,747 INFO ]: Finished difference Result 10 states and 18 transitions. [2018-06-22 01:28:46,747 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 01:28:46,748 INFO ]: Start accepts. Automaton has 2 states. Word has length 6 [2018-06-22 01:28:46,748 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:28:46,757 INFO ]: With dead ends: 10 [2018-06-22 01:28:46,757 INFO ]: Without dead ends: 10 [2018-06-22 01:28:46,759 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 01:28:46,775 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 01:28:46,789 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 01:28:46,790 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 01:28:46,791 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2018-06-22 01:28:46,792 INFO ]: Start accepts. Automaton has 10 states and 18 transitions. Word has length 6 [2018-06-22 01:28:46,792 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:28:46,792 INFO ]: Abstraction has 10 states and 18 transitions. [2018-06-22 01:28:46,792 INFO ]: Interpolant automaton has 2 states. [2018-06-22 01:28:46,792 INFO ]: Start isEmpty. Operand 10 states and 18 transitions. [2018-06-22 01:28:46,792 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:28:46,792 INFO ]: Found error trace [2018-06-22 01:28:46,792 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:28:46,792 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:28:46,792 INFO ]: Analyzing trace with hash 1826089642, now seen corresponding path program 1 times [2018-06-22 01:28:46,792 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:28:46,793 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:28:46,793 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:46,793 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:46,793 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:46,812 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:46,895 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:46,895 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:28:46,896 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:28:46,897 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:28:46,897 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:28:46,897 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:28:46,897 INFO ]: Start difference. First operand 10 states and 18 transitions. Second operand 3 states. [2018-06-22 01:28:47,015 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:28:47,015 INFO ]: Finished difference Result 15 states and 30 transitions. [2018-06-22 01:28:47,015 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:28:47,015 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 01:28:47,015 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:28:47,017 INFO ]: With dead ends: 15 [2018-06-22 01:28:47,018 INFO ]: Without dead ends: 15 [2018-06-22 01:28:47,018 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 01:28:47,019 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 01:28:47,021 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 11. [2018-06-22 01:28:47,021 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 01:28:47,022 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 23 transitions. [2018-06-22 01:28:47,022 INFO ]: Start accepts. Automaton has 11 states and 23 transitions. Word has length 7 [2018-06-22 01:28:47,023 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:28:47,023 INFO ]: Abstraction has 11 states and 23 transitions. [2018-06-22 01:28:47,023 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:28:47,023 INFO ]: Start isEmpty. Operand 11 states and 23 transitions. [2018-06-22 01:28:47,023 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:28:47,023 INFO ]: Found error trace [2018-06-22 01:28:47,023 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:28:47,023 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:28:47,024 INFO ]: Analyzing trace with hash 1836248373, now seen corresponding path program 1 times [2018-06-22 01:28:47,024 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:28:47,024 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:28:47,024 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:47,024 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:47,024 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:47,040 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:47,108 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:47,109 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:28:47,109 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:28:47,109 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:28:47,109 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:28:47,109 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:28:47,109 INFO ]: Start difference. First operand 11 states and 23 transitions. Second operand 3 states. [2018-06-22 01:28:47,296 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:28:47,296 INFO ]: Finished difference Result 15 states and 30 transitions. [2018-06-22 01:28:47,298 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:28:47,298 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 01:28:47,298 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:28:47,299 INFO ]: With dead ends: 15 [2018-06-22 01:28:47,299 INFO ]: Without dead ends: 15 [2018-06-22 01:28:47,299 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 01:28:47,299 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 01:28:47,301 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 12. [2018-06-22 01:28:47,301 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 01:28:47,302 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 25 transitions. [2018-06-22 01:28:47,302 INFO ]: Start accepts. Automaton has 12 states and 25 transitions. Word has length 7 [2018-06-22 01:28:47,302 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:28:47,302 INFO ]: Abstraction has 12 states and 25 transitions. [2018-06-22 01:28:47,302 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:28:47,302 INFO ]: Start isEmpty. Operand 12 states and 25 transitions. [2018-06-22 01:28:47,302 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:28:47,302 INFO ]: Found error trace [2018-06-22 01:28:47,302 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:28:47,302 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:28:47,302 INFO ]: Analyzing trace with hash 762758728, now seen corresponding path program 1 times [2018-06-22 01:28:47,302 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:28:47,302 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:28:47,304 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:47,304 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:47,304 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:47,324 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:47,482 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:47,482 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:28:47,482 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 01:28:47,496 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:28:47,535 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:47,543 INFO ]: Computing forward predicates... [2018-06-22 01:28:47,668 INFO ]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 01:28:47,696 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:28:47,696 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-06-22 01:28:47,696 INFO ]: Interpolant automaton has 5 states [2018-06-22 01:28:47,696 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 01:28:47,696 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:28:47,696 INFO ]: Start difference. First operand 12 states and 25 transitions. Second operand 5 states. [2018-06-22 01:28:47,881 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:28:47,881 INFO ]: Finished difference Result 11 states and 16 transitions. [2018-06-22 01:28:47,881 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:28:47,881 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 01:28:47,881 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:28:47,882 INFO ]: With dead ends: 11 [2018-06-22 01:28:47,882 INFO ]: Without dead ends: 11 [2018-06-22 01:28:47,882 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-22 01:28:47,882 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 01:28:47,884 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-06-22 01:28:47,884 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 01:28:47,884 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2018-06-22 01:28:47,884 INFO ]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 8 [2018-06-22 01:28:47,884 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:28:47,884 INFO ]: Abstraction has 10 states and 14 transitions. [2018-06-22 01:28:47,884 INFO ]: Interpolant automaton has 5 states. [2018-06-22 01:28:47,884 INFO ]: Start isEmpty. Operand 10 states and 14 transitions. [2018-06-22 01:28:47,885 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:28:47,885 INFO ]: Found error trace [2018-06-22 01:28:47,885 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:28:47,885 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:28:47,885 INFO ]: Analyzing trace with hash 1085395258, now seen corresponding path program 1 times [2018-06-22 01:28:47,885 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:28:47,885 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:28:47,886 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:47,886 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:47,886 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:47,893 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:47,932 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:47,932 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:28:47,932 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:28:47,933 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:28:47,933 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:28:47,933 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:28:47,933 INFO ]: Start difference. First operand 10 states and 14 transitions. Second operand 3 states. [2018-06-22 01:28:47,965 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:28:47,965 INFO ]: Finished difference Result 5 states and 7 transitions. [2018-06-22 01:28:47,966 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:28:47,966 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-22 01:28:47,966 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:28:47,966 INFO ]: With dead ends: 5 [2018-06-22 01:28:47,966 INFO ]: Without dead ends: 0 [2018-06-22 01:28:47,966 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 01:28:47,966 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:28:47,966 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:28:47,966 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:28:47,966 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:28:47,966 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-06-22 01:28:47,966 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:28:47,966 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:28:47,966 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:28:47,966 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:28:47,966 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:28:47,971 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:28:47 BoogieIcfgContainer [2018-06-22 01:28:47,971 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:28:47,972 INFO ]: Toolchain (without parser) took 2049.92 ms. Allocated memory is still 305.1 MB. Free memory was 259.5 MB in the beginning and 203.1 MB in the end (delta: 56.5 MB). Peak memory consumption was 56.5 MB. Max. memory is 3.6 GB. [2018-06-22 01:28:47,975 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 305.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:28:47,976 INFO ]: ChcToBoogie took 54.06 ms. Allocated memory is still 305.1 MB. Free memory was 259.5 MB in the beginning and 257.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:28:47,977 INFO ]: Boogie Preprocessor took 53.48 ms. Allocated memory is still 305.1 MB. Free memory was 257.5 MB in the beginning and 255.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-22 01:28:47,977 INFO ]: RCFGBuilder took 416.69 ms. Allocated memory is still 305.1 MB. Free memory was 255.4 MB in the beginning and 245.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:28:47,978 INFO ]: TraceAbstraction took 1508.06 ms. Allocated memory is still 305.1 MB. Free memory was 245.4 MB in the beginning and 203.1 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 3.6 GB. [2018-06-22 01:28:47,984 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 305.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 54.06 ms. Allocated memory is still 305.1 MB. Free memory was 259.5 MB in the beginning and 257.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 53.48 ms. Allocated memory is still 305.1 MB. Free memory was 257.5 MB in the beginning and 255.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 416.69 ms. Allocated memory is still 305.1 MB. Free memory was 255.4 MB in the beginning and 245.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1508.06 ms. Allocated memory is still 305.1 MB. Free memory was 245.4 MB in the beginning and 203.1 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 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, 12 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 67 SDtfs, 22 SDslu, 36 SDs, 0 SdLazy, 26 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, 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, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 700 SizeOfPredicates, 4 NumberOfNonLiveVariables, 62 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 1/2 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/015b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-28-47-999.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/015b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-28-47-999.csv Received shutdown request...