java -Xss4m -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/Consistency/incremental-2lists.38.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 08:32:35,618 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 08:32:35,620 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 08:32:35,636 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 08:32:35,636 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 08:32:35,637 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 08:32:35,638 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 08:32:35,642 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 08:32:35,644 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 08:32:35,644 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 08:32:35,645 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 08:32:35,645 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 08:32:35,647 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 08:32:35,649 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 08:32:35,649 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 08:32:35,650 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 08:32:35,655 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 08:32:35,657 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 08:32:35,668 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 08:32:35,669 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 08:32:35,671 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 08:32:35,675 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 08:32:35,675 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 08:32:35,675 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 08:32:35,676 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 08:32:35,677 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 08:32:35,677 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 08:32:35,678 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 08:32:35,679 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 08:32:35,683 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 08:32:35,684 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 08:32:35,684 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 08:32:35,685 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 08:32:35,685 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 08:32:35,686 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 08:32:35,686 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 08:32:35,709 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 08:32:35,709 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 08:32:35,709 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 08:32:35,710 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 08:32:35,711 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 08:32:35,712 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 08:32:35,712 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 08:32:35,712 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 08:32:35,712 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 08:32:35,712 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 08:32:35,713 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 08:32:35,713 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 08:32:35,713 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:32:35,713 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 08:32:35,713 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 08:32:35,714 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 08:32:35,715 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 08:32:35,715 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 08:32:35,715 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 08:32:35,715 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 08:32:35,715 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 08:32:35,717 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 08:32:35,717 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 08:32:35,769 INFO ]: Repository-Root is: /tmp [2018-06-25 08:32:35,787 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 08:32:35,792 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 08:32:35,793 INFO ]: Initializing SmtParser... [2018-06-25 08:32:35,793 INFO ]: SmtParser initialized [2018-06-25 08:32:35,794 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental-2lists.38.smt2 [2018-06-25 08:32:35,795 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 [2018-06-25 08:32:35,883 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental-2lists.38.smt2 unknown [2018-06-25 08:32:36,880 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental-2lists.38.smt2 [2018-06-25 08:32:36,885 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 08:32:36,899 INFO ]: Walking toolchain with 4 elements. [2018-06-25 08:32:36,900 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 08:32:36,900 INFO ]: Initializing ChcToBoogie... [2018-06-25 08:32:36,900 INFO ]: ChcToBoogie initialized [2018-06-25 08:32:36,907 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:32:36" (1/1) ... [2018-06-25 08:32:37,047 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:32:37 Unit [2018-06-25 08:32:37,047 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 08:32:37,048 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 08:32:37,048 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 08:32:37,048 INFO ]: Boogie Preprocessor initialized [2018-06-25 08:32:37,066 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:32:37" (1/1) ... [2018-06-25 08:32:37,066 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:32:37" (1/1) ... [2018-06-25 08:32:37,083 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:32:37" (1/1) ... [2018-06-25 08:32:37,083 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:32:37" (1/1) ... [2018-06-25 08:32:37,107 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:32:37" (1/1) ... [2018-06-25 08:32:37,117 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:32:37" (1/1) ... [2018-06-25 08:32:37,122 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:32:37" (1/1) ... [2018-06-25 08:32:37,138 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 08:32:37,138 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 08:32:37,138 INFO ]: Initializing RCFGBuilder... [2018-06-25 08:32:37,138 INFO ]: RCFGBuilder initialized [2018-06-25 08:32:37,139 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:32:37" (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) [2018-06-25 08:32:37,148 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 08:32:37,148 INFO ]: Found specification of procedure gotoProc [2018-06-25 08:32:37,148 INFO ]: Found implementation of procedure gotoProc [2018-06-25 08:32:37,148 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 08:32:37,148 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 08:32:37,148 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 [2018-06-25 08:32:39,393 INFO ]: Using library mode [2018-06-25 08:32:39,393 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:32:39 BoogieIcfgContainer [2018-06-25 08:32:39,393 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 08:32:39,395 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 08:32:39,395 INFO ]: Initializing TraceAbstraction... [2018-06-25 08:32:39,398 INFO ]: TraceAbstraction initialized [2018-06-25 08:32:39,398 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:32:36" (1/3) ... [2018-06-25 08:32:39,398 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b974e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 08:32:39, skipping insertion in model container [2018-06-25 08:32:39,398 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:32:37" (2/3) ... [2018-06-25 08:32:39,399 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b974e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 08:32:39, skipping insertion in model container [2018-06-25 08:32:39,399 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:32:39" (3/3) ... [2018-06-25 08:32:39,400 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 08:32:39,409 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 08:32:39,417 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 08:32:39,462 INFO ]: Using default assertion order modulation [2018-06-25 08:32:39,463 INFO ]: Interprodecural is true [2018-06-25 08:32:39,463 INFO ]: Hoare is false [2018-06-25 08:32:39,463 INFO ]: Compute interpolants for FPandBP [2018-06-25 08:32:39,463 INFO ]: Backedges is TWOTRACK [2018-06-25 08:32:39,463 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 08:32:39,463 INFO ]: Difference is false [2018-06-25 08:32:39,463 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 08:32:39,463 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 08:32:39,482 INFO ]: Start isEmpty. Operand 144 states. [2018-06-25 08:32:39,502 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 08:32:39,502 INFO ]: Found error trace [2018-06-25 08:32:39,503 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:32:39,504 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:32:39,509 INFO ]: Analyzing trace with hash -606918975, now seen corresponding path program 1 times [2018-06-25 08:32:39,511 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:32:39,511 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:32:39,546 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:32:39,546 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:32:39,546 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:32:39,593 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:32:39,892 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:32:39,895 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:32:39,895 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:32:39,896 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:32:39,912 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:32:39,912 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:32:39,914 INFO ]: Start difference. First operand 144 states. Second operand 4 states. [2018-06-25 08:32:43,468 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:32:43,468 INFO ]: Finished difference Result 281 states and 565 transitions. [2018-06-25 08:32:43,468 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:32:43,470 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-25 08:32:43,470 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:32:43,545 INFO ]: With dead ends: 281 [2018-06-25 08:32:43,545 INFO ]: Without dead ends: 279 [2018-06-25 08:32:43,547 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 08:32:43,569 INFO ]: Start minimizeSevpa. Operand 279 states. [2018-06-25 08:32:43,709 INFO ]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-06-25 08:32:43,710 INFO ]: Start removeUnreachable. Operand 279 states. [2018-06-25 08:32:43,778 INFO ]: Finished removeUnreachable. Reduced from 279 states to 279 states and 563 transitions. [2018-06-25 08:32:43,779 INFO ]: Start accepts. Automaton has 279 states and 563 transitions. Word has length 8 [2018-06-25 08:32:43,780 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:32:43,780 INFO ]: Abstraction has 279 states and 563 transitions. [2018-06-25 08:32:43,781 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:32:43,781 INFO ]: Start isEmpty. Operand 279 states and 563 transitions. [2018-06-25 08:32:43,787 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 08:32:43,787 INFO ]: Found error trace [2018-06-25 08:32:43,788 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:32:43,788 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:32:43,788 INFO ]: Analyzing trace with hash 341676765, now seen corresponding path program 1 times [2018-06-25 08:32:43,788 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:32:43,788 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:32:43,789 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:32:43,789 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:32:43,789 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:32:43,797 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:32:44,042 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:32:44,042 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:32:44,042 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:32:44,043 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:32:44,043 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:32:44,043 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:32:44,044 INFO ]: Start difference. First operand 279 states and 563 transitions. Second operand 4 states. [2018-06-25 08:32:45,784 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:32:45,784 INFO ]: Finished difference Result 417 states and 843 transitions. [2018-06-25 08:32:45,784 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:32:45,784 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-25 08:32:45,785 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:32:45,815 INFO ]: With dead ends: 417 [2018-06-25 08:32:45,815 INFO ]: Without dead ends: 417 [2018-06-25 08:32:45,816 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 08:32:45,816 INFO ]: Start minimizeSevpa. Operand 417 states. [2018-06-25 08:32:45,904 INFO ]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-06-25 08:32:45,904 INFO ]: Start removeUnreachable. Operand 417 states. [2018-06-25 08:32:45,931 INFO ]: Finished removeUnreachable. Reduced from 417 states to 417 states and 843 transitions. [2018-06-25 08:32:45,931 INFO ]: Start accepts. Automaton has 417 states and 843 transitions. Word has length 9 [2018-06-25 08:32:45,932 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:32:45,932 INFO ]: Abstraction has 417 states and 843 transitions. [2018-06-25 08:32:45,932 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:32:45,932 INFO ]: Start isEmpty. Operand 417 states and 843 transitions. [2018-06-25 08:32:45,935 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 08:32:45,935 INFO ]: Found error trace [2018-06-25 08:32:45,935 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:32:45,935 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:32:45,935 INFO ]: Analyzing trace with hash 289840425, now seen corresponding path program 1 times [2018-06-25 08:32:45,935 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:32:45,935 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:32:45,936 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:32:45,936 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:32:45,936 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:32:45,953 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:32:46,065 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:32:46,065 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:32:46,065 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:32:46,066 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:32:46,066 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:32:46,066 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:32:46,066 INFO ]: Start difference. First operand 417 states and 843 transitions. Second operand 4 states. [2018-06-25 08:32:47,330 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:32:47,330 INFO ]: Finished difference Result 555 states and 1123 transitions. [2018-06-25 08:32:47,331 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:32:47,331 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-25 08:32:47,331 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:32:47,371 INFO ]: With dead ends: 555 [2018-06-25 08:32:47,371 INFO ]: Without dead ends: 555 [2018-06-25 08:32:47,372 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 08:32:47,372 INFO ]: Start minimizeSevpa. Operand 555 states. [2018-06-25 08:32:47,467 INFO ]: Finished minimizeSevpa. Reduced states from 555 to 555. [2018-06-25 08:32:47,467 INFO ]: Start removeUnreachable. Operand 555 states. [2018-06-25 08:32:47,485 INFO ]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1123 transitions. [2018-06-25 08:32:47,485 INFO ]: Start accepts. Automaton has 555 states and 1123 transitions. Word has length 9 [2018-06-25 08:32:47,485 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:32:47,485 INFO ]: Abstraction has 555 states and 1123 transitions. [2018-06-25 08:32:47,485 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:32:47,485 INFO ]: Start isEmpty. Operand 555 states and 1123 transitions. [2018-06-25 08:32:47,518 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-25 08:32:47,518 INFO ]: Found error trace [2018-06-25 08:32:47,518 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:32:47,518 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:32:47,519 INFO ]: Analyzing trace with hash 1492953976, now seen corresponding path program 1 times [2018-06-25 08:32:47,519 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:32:47,519 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:32:47,519 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:32:47,519 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:32:47,519 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:32:47,561 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:32:47,782 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:32:47,782 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:32:47,782 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 [2018-06-25 08:32:47,793 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:32:47,863 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:32:47,873 INFO ]: Computing forward predicates... [2018-06-25 08:32:48,309 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:32:48,331 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:32:48,331 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-25 08:32:48,332 INFO ]: Interpolant automaton has 14 states [2018-06-25 08:32:48,332 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-25 08:32:48,332 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-25 08:32:48,332 INFO ]: Start difference. First operand 555 states and 1123 transitions. Second operand 14 states. [2018-06-25 08:32:49,633 WARN ]: Spent 305.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-06-25 08:33:00,025 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:33:00,026 INFO ]: Finished difference Result 1802 states and 4856 transitions. [2018-06-25 08:33:00,027 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-06-25 08:33:00,027 INFO ]: Start accepts. Automaton has 14 states. Word has length 19 [2018-06-25 08:33:00,027 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:33:00,217 INFO ]: With dead ends: 1802 [2018-06-25 08:33:00,217 INFO ]: Without dead ends: 1358 [2018-06-25 08:33:00,219 INFO ]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=214, Invalid=1192, Unknown=0, NotChecked=0, Total=1406 [2018-06-25 08:33:00,220 INFO ]: Start minimizeSevpa. Operand 1358 states. [2018-06-25 08:33:00,570 INFO ]: Finished minimizeSevpa. Reduced states from 1358 to 1111. [2018-06-25 08:33:00,570 INFO ]: Start removeUnreachable. Operand 1111 states. [2018-06-25 08:33:00,616 INFO ]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2463 transitions. [2018-06-25 08:33:00,616 INFO ]: Start accepts. Automaton has 1111 states and 2463 transitions. Word has length 19 [2018-06-25 08:33:00,617 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:33:00,617 INFO ]: Abstraction has 1111 states and 2463 transitions. [2018-06-25 08:33:00,618 INFO ]: Interpolant automaton has 14 states. [2018-06-25 08:33:00,618 INFO ]: Start isEmpty. Operand 1111 states and 2463 transitions. [2018-06-25 08:33:00,656 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-25 08:33:00,656 INFO ]: Found error trace [2018-06-25 08:33:00,656 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:33:00,656 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:33:00,657 INFO ]: Analyzing trace with hash -2076952689, now seen corresponding path program 1 times [2018-06-25 08:33:00,657 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:33:00,657 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:33:00,658 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:33:00,658 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:33:00,658 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:33:00,725 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:33:01,226 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:33:01,226 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:33:01,226 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-25 08:33:01,226 INFO ]: Interpolant automaton has 8 states [2018-06-25 08:33:01,226 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 08:33:01,226 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-25 08:33:01,226 INFO ]: Start difference. First operand 1111 states and 2463 transitions. Second operand 8 states. [2018-06-25 08:33:09,646 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:33:09,646 INFO ]: Finished difference Result 3588 states and 25562 transitions. [2018-06-25 08:33:09,647 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-25 08:33:09,647 INFO ]: Start accepts. Automaton has 8 states. Word has length 19 [2018-06-25 08:33:09,647 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:33:10,697 INFO ]: With dead ends: 3588 [2018-06-25 08:33:10,697 INFO ]: Without dead ends: 3474 [2018-06-25 08:33:10,698 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-06-25 08:33:10,700 INFO ]: Start minimizeSevpa. Operand 3474 states. [2018-06-25 08:33:14,306 INFO ]: Finished minimizeSevpa. Reduced states from 3474 to 1841. [2018-06-25 08:33:14,307 INFO ]: Start removeUnreachable. Operand 1841 states. [2018-06-25 08:33:14,550 INFO ]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 4417 transitions. [2018-06-25 08:33:14,550 INFO ]: Start accepts. Automaton has 1841 states and 4417 transitions. Word has length 19 [2018-06-25 08:33:14,550 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:33:14,550 INFO ]: Abstraction has 1841 states and 4417 transitions. [2018-06-25 08:33:14,550 INFO ]: Interpolant automaton has 8 states. [2018-06-25 08:33:14,550 INFO ]: Start isEmpty. Operand 1841 states and 4417 transitions. [2018-06-25 08:33:14,573 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-25 08:33:14,573 INFO ]: Found error trace [2018-06-25 08:33:14,573 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:33:14,573 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:33:14,574 INFO ]: Analyzing trace with hash -2075046065, now seen corresponding path program 1 times [2018-06-25 08:33:14,574 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:33:14,574 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:33:14,575 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:33:14,575 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:33:14,575 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:33:14,609 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:33:14,863 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:33:14,863 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:33:14,863 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-25 08:33:14,863 INFO ]: Interpolant automaton has 8 states [2018-06-25 08:33:14,863 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 08:33:14,863 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-25 08:33:14,863 INFO ]: Start difference. First operand 1841 states and 4417 transitions. Second operand 8 states. Received shutdown request... [2018-06-25 08:33:33,970 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-06-25 08:33:33,970 WARN ]: Verification canceled [2018-06-25 08:33:33,974 WARN ]: Timeout [2018-06-25 08:33:33,974 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 08:33:33 BoogieIcfgContainer [2018-06-25 08:33:33,974 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 08:33:33,975 INFO ]: Toolchain (without parser) took 57089.81 ms. Allocated memory was 321.4 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 288.5 MB in the beginning and 1.2 GB in the end (delta: -960.5 MB). Peak memory consumption was 497.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:33:33,976 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:33:33,977 INFO ]: ChcToBoogie took 147.71 ms. Allocated memory is still 321.4 MB. Free memory was 288.5 MB in the beginning and 284.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 3.6 GB. [2018-06-25 08:33:33,977 INFO ]: Boogie Preprocessor took 90.14 ms. Allocated memory is still 321.4 MB. Free memory was 284.0 MB in the beginning and 281.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 3.6 GB. [2018-06-25 08:33:33,978 INFO ]: RCFGBuilder took 2255.16 ms. Allocated memory was 321.4 MB in the beginning and 361.8 MB in the end (delta: 40.4 MB). Free memory was 281.7 MB in the beginning and 293.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 113.1 MB. Max. memory is 3.6 GB. [2018-06-25 08:33:33,978 INFO ]: TraceAbstraction took 54579.74 ms. Allocated memory was 361.8 MB in the beginning and 1.8 GB in the end (delta: 1.4 GB). Free memory was 293.4 MB in the beginning and 1.2 GB in the end (delta: -955.6 MB). Peak memory consumption was 461.5 MB. Max. memory is 3.6 GB. [2018-06-25 08:33:33,981 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 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 147.71 ms. Allocated memory is still 321.4 MB. Free memory was 288.5 MB in the beginning and 284.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 90.14 ms. Allocated memory is still 321.4 MB. Free memory was 284.0 MB in the beginning and 281.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 3.6 GB. * RCFGBuilder took 2255.16 ms. Allocated memory was 321.4 MB in the beginning and 361.8 MB in the end (delta: 40.4 MB). Free memory was 281.7 MB in the beginning and 293.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 113.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 54579.74 ms. Allocated memory was 361.8 MB in the beginning and 1.8 GB in the end (delta: 1.4 GB). Free memory was 293.4 MB in the beginning and 1.2 GB in the end (delta: -955.6 MB). Peak memory consumption was 461.5 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was constructing difference of abstraction (1841states) and interpolant automaton (currently 22 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (7236 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 144 locations, 1 error locations. TIMEOUT Result, 54.5s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 47.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4985 SDtfs, 1825 SDslu, 16157 SDs, 0 SdLazy, 26944 SolverSat, 6099 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 35.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1841occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 1880 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 3679 SizeOfPredicates, 8 NumberOfNonLiveVariables, 497 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 16/18 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/incremental-2lists.38.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_08-33-33-991.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/incremental-2lists.38.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_08-33-33-991.csv Completed graceful shutdown