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/hcai-bench/arrays_orig/array_fill1_abstracted.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:35:47,442 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:35:47,444 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:35:47,455 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:35:47,455 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:35:47,456 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:35:47,457 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:35:47,459 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:35:47,461 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:35:47,462 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:35:47,462 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:35:47,463 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:35:47,464 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:35:47,465 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:35:47,465 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:35:47,466 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:35:47,468 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:35:47,470 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:35:47,471 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:35:47,472 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:35:47,474 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:35:47,476 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:35:47,476 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:35:47,476 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:35:47,477 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:35:47,478 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:35:47,479 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:35:47,480 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:35:47,481 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:35:47,481 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:35:47,482 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:35:47,483 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:35:47,483 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:35:47,484 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:35:47,484 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:35:47,485 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:35:47,498 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:35:47,498 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:35:47,498 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:35:47,499 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:35:47,500 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:35:47,500 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:35:47,500 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:35:47,500 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:35:47,501 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:35:47,501 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:35:47,501 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:35:47,501 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:35:47,502 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:35:47,502 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:35:47,502 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:35:47,502 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:35:47,503 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:35:47,504 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:35:47,504 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:35:47,539 INFO ]: Repository-Root is: /tmp [2018-06-22 01:35:47,551 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:35:47,554 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:35:47,556 INFO ]: Initializing SmtParser... [2018-06-22 01:35:47,556 INFO ]: SmtParser initialized [2018-06-22 01:35:47,556 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_abstracted.smt2 [2018-06-22 01:35:47,558 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 01:35:47,646 INFO ]: Executing SMT file /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_abstracted.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@2b2ae136 [2018-06-22 01:35:47,816 INFO ]: Succesfully executed SMT file /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_abstracted.smt2 [2018-06-22 01:35:47,821 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:35:47,827 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:35:47,828 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:35:47,828 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:35:47,828 INFO ]: ChcToBoogie initialized [2018-06-22 01:35:47,831 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:35:47" (1/1) ... [2018-06-22 01:35:47,886 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:47 Unit [2018-06-22 01:35:47,886 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:35:47,887 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:35:47,887 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:35:47,887 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:35:47,907 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:47" (1/1) ... [2018-06-22 01:35:47,907 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:47" (1/1) ... [2018-06-22 01:35:47,913 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:47" (1/1) ... [2018-06-22 01:35:47,913 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:47" (1/1) ... [2018-06-22 01:35:47,915 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:47" (1/1) ... [2018-06-22 01:35:47,917 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:47" (1/1) ... [2018-06-22 01:35:47,918 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:47" (1/1) ... [2018-06-22 01:35:47,919 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:35:47,920 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:35:47,920 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:35:47,920 INFO ]: RCFGBuilder initialized [2018-06-22 01:35:47,921 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:47" (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 01:35:47,934 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:35:47,934 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:35:47,934 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:35:47,934 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:35:47,934 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:35:47,934 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 01:35:48,150 INFO ]: Using library mode [2018-06-22 01:35:48,150 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:35:48 BoogieIcfgContainer [2018-06-22 01:35:48,150 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:35:48,159 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:35:48,159 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:35:48,162 INFO ]: TraceAbstraction initialized [2018-06-22 01:35:48,162 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:35:47" (1/3) ... [2018-06-22 01:35:48,163 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286926b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:35:48, skipping insertion in model container [2018-06-22 01:35:48,163 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:47" (2/3) ... [2018-06-22 01:35:48,164 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286926b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:35:48, skipping insertion in model container [2018-06-22 01:35:48,164 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:35:48" (3/3) ... [2018-06-22 01:35:48,166 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:35:48,180 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:35:48,191 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:35:48,227 INFO ]: Using default assertion order modulation [2018-06-22 01:35:48,228 INFO ]: Interprodecural is true [2018-06-22 01:35:48,228 INFO ]: Hoare is false [2018-06-22 01:35:48,228 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:35:48,228 INFO ]: Backedges is TWOTRACK [2018-06-22 01:35:48,228 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:35:48,228 INFO ]: Difference is false [2018-06-22 01:35:48,228 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:35:48,228 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:35:48,240 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 01:35:48,249 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:35:48,250 INFO ]: Found error trace [2018-06-22 01:35:48,250 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:35:48,251 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:35:48,256 INFO ]: Analyzing trace with hash 1426557264, now seen corresponding path program 1 times [2018-06-22 01:35:48,258 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:35:48,259 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:35:48,291 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:48,291 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:35:48,291 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:48,330 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:35:48,447 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:35:48,449 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:35:48,449 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:35:48,451 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:35:48,461 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:35:48,461 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:35:48,463 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 01:35:48,560 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:35:48,560 INFO ]: Finished difference Result 14 states and 16 transitions. [2018-06-22 01:35:48,560 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 01:35:48,561 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 01:35:48,561 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:35:48,568 INFO ]: With dead ends: 14 [2018-06-22 01:35:48,568 INFO ]: Without dead ends: 14 [2018-06-22 01:35:48,569 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 [2018-06-22 01:35:48,582 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 01:35:48,598 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 12. [2018-06-22 01:35:48,599 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 01:35:48,600 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-06-22 01:35:48,601 INFO ]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2018-06-22 01:35:48,601 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:35:48,601 INFO ]: Abstraction has 12 states and 13 transitions. [2018-06-22 01:35:48,601 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:35:48,602 INFO ]: Start isEmpty. Operand 12 states and 13 transitions. [2018-06-22 01:35:48,602 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 01:35:48,602 INFO ]: Found error trace [2018-06-22 01:35:48,602 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:35:48,602 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:35:48,602 INFO ]: Analyzing trace with hash -2088421178, now seen corresponding path program 1 times [2018-06-22 01:35:48,602 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:35:48,602 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:35:48,603 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:48,603 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:35:48,603 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:48,622 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:35:48,809 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:35:48,809 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:35:48,809 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 01:35:48,829 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 01:35:48,863 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:35:48,870 INFO ]: Computing forward predicates... [2018-06-22 01:35:49,490 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:35:49,525 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:35:49,525 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-06-22 01:35:49,525 INFO ]: Interpolant automaton has 10 states [2018-06-22 01:35:49,525 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 01:35:49,526 INFO ]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-06-22 01:35:49,526 INFO ]: Start difference. First operand 12 states and 13 transitions. Second operand 10 states. [2018-06-22 01:35:49,902 WARN ]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-22 01:35:50,027 WARN ]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-06-22 01:35:50,234 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:35:50,234 INFO ]: Finished difference Result 26 states and 31 transitions. [2018-06-22 01:35:50,234 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 01:35:50,234 INFO ]: Start accepts. Automaton has 10 states. Word has length 11 [2018-06-22 01:35:50,234 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:35:50,237 INFO ]: With dead ends: 26 [2018-06-22 01:35:50,237 INFO ]: Without dead ends: 26 [2018-06-22 01:35:50,239 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2018-06-22 01:35:50,239 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-22 01:35:50,243 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 15. [2018-06-22 01:35:50,243 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 01:35:50,243 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2018-06-22 01:35:50,244 INFO ]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2018-06-22 01:35:50,244 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:35:50,244 INFO ]: Abstraction has 15 states and 17 transitions. [2018-06-22 01:35:50,244 INFO ]: Interpolant automaton has 10 states. [2018-06-22 01:35:50,244 INFO ]: Start isEmpty. Operand 15 states and 17 transitions. [2018-06-22 01:35:50,244 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 01:35:50,244 INFO ]: Found error trace [2018-06-22 01:35:50,244 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:35:50,244 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:35:50,244 INFO ]: Analyzing trace with hash -2031162876, now seen corresponding path program 1 times [2018-06-22 01:35:50,244 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:35:50,245 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:35:50,247 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:50,247 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:35:50,247 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:50,264 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:35:50,345 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:35:50,345 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:35:50,345 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 01:35:50,346 INFO ]: Interpolant automaton has 5 states [2018-06-22 01:35:50,346 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 01:35:50,346 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:35:50,346 INFO ]: Start difference. First operand 15 states and 17 transitions. Second operand 5 states. [2018-06-22 01:35:50,462 WARN ]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 01:35:50,682 WARN ]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 01:35:50,705 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:35:50,705 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 01:35:50,705 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 01:35:50,705 INFO ]: Start accepts. Automaton has 5 states. Word has length 11 [2018-06-22 01:35:50,705 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:35:50,706 INFO ]: With dead ends: 15 [2018-06-22 01:35:50,706 INFO ]: Without dead ends: 15 [2018-06-22 01:35:50,706 INFO ]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-22 01:35:50,706 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 01:35:50,708 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 01:35:50,708 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 01:35:50,708 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 01:35:50,708 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2018-06-22 01:35:50,708 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:35:50,708 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 01:35:50,708 INFO ]: Interpolant automaton has 5 states. [2018-06-22 01:35:50,708 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 01:35:50,709 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 01:35:50,709 INFO ]: Found error trace [2018-06-22 01:35:50,709 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:35:50,709 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:35:50,709 INFO ]: Analyzing trace with hash -1213543024, now seen corresponding path program 2 times [2018-06-22 01:35:50,709 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:35:50,709 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:35:50,710 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:50,710 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:35:50,710 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:50,727 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:35:50,904 WARN ]: Spent 115.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-06-22 01:35:51,087 INFO ]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:35:51,087 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:35:51,087 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 01:35:51,096 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 01:35:51,115 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:35:51,115 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:35:51,117 INFO ]: Computing forward predicates... [2018-06-22 01:35:51,227 INFO ]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:35:51,248 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:35:51,248 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2018-06-22 01:35:51,248 INFO ]: Interpolant automaton has 14 states [2018-06-22 01:35:51,249 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 01:35:51,249 INFO ]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-06-22 01:35:51,249 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 14 states. [2018-06-22 01:35:51,521 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:35:51,521 INFO ]: Finished difference Result 26 states and 30 transitions. [2018-06-22 01:35:51,521 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 01:35:51,521 INFO ]: Start accepts. Automaton has 14 states. Word has length 14 [2018-06-22 01:35:51,521 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:35:51,522 INFO ]: With dead ends: 26 [2018-06-22 01:35:51,522 INFO ]: Without dead ends: 26 [2018-06-22 01:35:51,522 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-06-22 01:35:51,523 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-22 01:35:51,525 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 16. [2018-06-22 01:35:51,525 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-22 01:35:51,526 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-06-22 01:35:51,526 INFO ]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 14 [2018-06-22 01:35:51,526 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:35:51,526 INFO ]: Abstraction has 16 states and 18 transitions. [2018-06-22 01:35:51,526 INFO ]: Interpolant automaton has 14 states. [2018-06-22 01:35:51,526 INFO ]: Start isEmpty. Operand 16 states and 18 transitions. [2018-06-22 01:35:51,527 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 01:35:51,527 INFO ]: Found error trace [2018-06-22 01:35:51,527 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:35:51,527 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:35:51,527 INFO ]: Analyzing trace with hash -1156284722, now seen corresponding path program 1 times [2018-06-22 01:35:51,527 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:35:51,527 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:35:51,528 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:51,528 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:35:51,528 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:51,539 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:35:51,586 INFO ]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:35:51,586 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:35:51,586 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 01:35:51,586 INFO ]: Interpolant automaton has 6 states [2018-06-22 01:35:51,586 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 01:35:51,586 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 01:35:51,586 INFO ]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2018-06-22 01:35:51,766 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:35:51,766 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 01:35:51,766 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 01:35:51,766 INFO ]: Start accepts. Automaton has 6 states. Word has length 14 [2018-06-22 01:35:51,766 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:35:51,767 INFO ]: With dead ends: 9 [2018-06-22 01:35:51,767 INFO ]: Without dead ends: 0 [2018-06-22 01:35:51,767 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-06-22 01:35:51,767 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:35:51,767 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:35:51,767 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:35:51,767 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:35:51,767 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-06-22 01:35:51,767 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:35:51,767 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:35:51,767 INFO ]: Interpolant automaton has 6 states. [2018-06-22 01:35:51,767 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:35:51,767 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:35:51,771 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:35:51 BoogieIcfgContainer [2018-06-22 01:35:51,772 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:35:51,772 INFO ]: Toolchain (without parser) took 3950.73 ms. Allocated memory was 308.3 MB in the beginning and 325.6 MB in the end (delta: 17.3 MB). Free memory was 264.7 MB in the beginning and 205.8 MB in the end (delta: 58.9 MB). Peak memory consumption was 76.2 MB. Max. memory is 3.6 GB. [2018-06-22 01:35:51,773 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:35:51,774 INFO ]: ChcToBoogie took 58.90 ms. Allocated memory is still 308.3 MB. Free memory was 264.7 MB in the beginning and 262.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:35:51,774 INFO ]: Boogie Preprocessor took 32.19 ms. Allocated memory is still 308.3 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:35:51,775 INFO ]: RCFGBuilder took 230.46 ms. Allocated memory is still 308.3 MB. Free memory was 260.7 MB in the beginning and 253.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:35:51,775 INFO ]: TraceAbstraction took 3612.82 ms. Allocated memory was 308.3 MB in the beginning and 325.6 MB in the end (delta: 17.3 MB). Free memory was 252.7 MB in the beginning and 205.8 MB in the end (delta: 46.9 MB). Peak memory consumption was 64.2 MB. Max. memory is 3.6 GB. [2018-06-22 01:35:51,779 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 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 58.90 ms. Allocated memory is still 308.3 MB. Free memory was 264.7 MB in the beginning and 262.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 32.19 ms. Allocated memory is still 308.3 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 230.46 ms. Allocated memory is still 308.3 MB. Free memory was 260.7 MB in the beginning and 253.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3612.82 ms. Allocated memory was 308.3 MB in the beginning and 325.6 MB in the end (delta: 17.3 MB). Free memory was 252.7 MB in the beginning and 205.8 MB in the end (delta: 46.9 MB). Peak memory consumption was 64.2 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. SAFE Result, 3.5s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 39 SDtfs, 115 SDslu, 142 SDs, 0 SdLazy, 75 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=4, 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, 23 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 3978 SizeOfPredicates, 22 NumberOfNonLiveVariables, 166 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 8/18 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/array_fill1_abstracted.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-35-51-790.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_fill1_abstracted.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-35-51-790.csv Received shutdown request...