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/vmt-chc-benchmarks/ctigar/hsortprime.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:28:12,765 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:28:12,769 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:28:12,782 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:28:12,782 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:28:12,784 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:28:12,785 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:28:12,790 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:28:12,791 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:28:12,794 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:28:12,795 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:28:12,795 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:28:12,796 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:28:12,799 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:28:12,800 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:28:12,801 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:28:12,805 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:28:12,807 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:28:12,821 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:28:12,822 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:28:12,823 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:28:12,826 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:28:12,826 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:28:12,826 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:28:12,827 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:28:12,828 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:28:12,833 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:28:12,834 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:28:12,835 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:28:12,835 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:28:12,836 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:28:12,843 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:28:12,843 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:28:12,844 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:28:12,845 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:28:12,845 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:28:12,872 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:28:12,872 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:28:12,872 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:28:12,873 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:28:12,874 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:28:12,874 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:28:12,874 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:28:12,874 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:28:12,874 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:28:12,878 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:28:12,878 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:28:12,878 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:28:12,878 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:28:12,878 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:28:12,879 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:28:12,879 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:28:12,879 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:28:12,880 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:28:12,882 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:28:12,932 INFO ]: Repository-Root is: /tmp [2018-06-22 05:28:12,949 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:28:12,953 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:28:12,955 INFO ]: Initializing SmtParser... [2018-06-22 05:28:12,955 INFO ]: SmtParser initialized [2018-06-22 05:28:12,956 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/hsortprime.c.smt2 [2018-06-22 05:28:12,973 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 05:28:13,155 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/hsortprime.c.smt2 unknown [2018-06-22 05:28:14,054 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/hsortprime.c.smt2 [2018-06-22 05:28:14,103 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:28:14,112 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:28:14,112 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:28:14,112 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:28:14,112 INFO ]: ChcToBoogie initialized [2018-06-22 05:28:14,255 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:28:14" (1/1) ... [2018-06-22 05:28:14,650 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:28:14 Unit [2018-06-22 05:28:14,650 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:28:14,651 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:28:14,651 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:28:14,651 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:28:14,684 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:28:14" (1/1) ... [2018-06-22 05:28:14,684 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:28:14" (1/1) ... [2018-06-22 05:28:14,696 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:28:14" (1/1) ... [2018-06-22 05:28:14,696 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:28:14" (1/1) ... [2018-06-22 05:28:14,708 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:28:14" (1/1) ... [2018-06-22 05:28:14,710 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:28:14" (1/1) ... [2018-06-22 05:28:14,712 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:28:14" (1/1) ... [2018-06-22 05:28:14,715 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:28:14,716 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:28:14,716 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:28:14,716 INFO ]: RCFGBuilder initialized [2018-06-22 05:28:14,717 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:28:14" (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 05:28:14,766 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:28:14,766 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:28:14,766 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:28:14,766 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:28:14,766 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:28:14,766 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 05:28:15,096 INFO ]: Using library mode [2018-06-22 05:28:15,097 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:28:15 BoogieIcfgContainer [2018-06-22 05:28:15,097 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:28:15,098 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:28:15,098 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:28:15,156 INFO ]: TraceAbstraction initialized [2018-06-22 05:28:15,156 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:28:14" (1/3) ... [2018-06-22 05:28:15,157 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698cf9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:28:15, skipping insertion in model container [2018-06-22 05:28:15,157 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:28:14" (2/3) ... [2018-06-22 05:28:15,157 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698cf9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:28:15, skipping insertion in model container [2018-06-22 05:28:15,157 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:28:15" (3/3) ... [2018-06-22 05:28:15,159 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:28:15,192 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:28:15,217 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:28:15,508 INFO ]: Using default assertion order modulation [2018-06-22 05:28:15,509 INFO ]: Interprodecural is true [2018-06-22 05:28:15,509 INFO ]: Hoare is false [2018-06-22 05:28:15,509 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:28:15,509 INFO ]: Backedges is TWOTRACK [2018-06-22 05:28:15,509 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:28:15,509 INFO ]: Difference is false [2018-06-22 05:28:15,509 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:28:15,509 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:28:15,564 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:28:15,628 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:28:15,628 INFO ]: Found error trace [2018-06-22 05:28:15,649 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:28:15,649 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:28:15,660 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 05:28:15,662 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:28:15,662 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:28:15,709 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:28:15,709 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:28:15,709 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:28:15,780 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:28:15,888 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:28:15,890 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:28:15,890 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:28:15,891 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:28:15,910 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:28:15,911 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:28:15,944 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:28:16,050 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:28:16,050 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:28:16,050 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:28:16,052 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:28:16,052 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:28:16,088 INFO ]: With dead ends: 9 [2018-06-22 05:28:16,088 INFO ]: Without dead ends: 9 [2018-06-22 05:28:16,091 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 05:28:16,208 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:28:16,239 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:28:16,240 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:28:16,240 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:28:16,241 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:28:16,241 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:28:16,241 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:28:16,241 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:28:16,242 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:28:16,242 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:28:16,242 INFO ]: Found error trace [2018-06-22 05:28:16,242 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:28:16,242 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:28:16,242 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 05:28:16,242 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:28:16,242 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:28:16,243 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:28:16,243 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:28:16,243 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:28:16,312 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:28:16,474 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:28:16,474 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:28:16,474 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:28:16,484 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:28:16,566 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:28:16,577 INFO ]: Computing forward predicates... [2018-06-22 05:28:18,099 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:28:18,135 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:28:18,135 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:28:18,136 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:28:18,136 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:28:18,136 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:28:18,136 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:28:18,356 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:28:18,357 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:28:18,358 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 05:28:18,358 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:28:18,358 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:28:18,358 INFO ]: With dead ends: 11 [2018-06-22 05:28:18,358 INFO ]: Without dead ends: 11 [2018-06-22 05:28:18,359 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:28:18,359 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:28:18,360 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:28:18,360 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:28:18,361 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:28:18,361 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 05:28:18,361 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:28:18,361 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:28:18,361 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:28:18,361 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:28:18,361 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:28:18,361 INFO ]: Found error trace [2018-06-22 05:28:18,361 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:28:18,361 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:28:18,361 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-22 05:28:18,362 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:28:18,362 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:28:18,363 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:28:18,363 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:28:18,363 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:28:18,522 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:28:19,013 WARN ]: Spent 315.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2018-06-22 05:28:19,346 WARN ]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 05:28:19,347 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:28:19,368 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:28:19,368 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) [2018-06-22 05:28:19,379 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:28:19,515 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:28:19,515 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:28:19,520 INFO ]: Computing forward predicates... [2018-06-22 05:28:28,123 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:28:29,990 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:28:30,012 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:28:30,012 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 05:28:30,013 INFO ]: Interpolant automaton has 7 states [2018-06-22 05:28:30,013 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 05:28:30,013 INFO ]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-22 05:28:30,013 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-06-22 05:28:30,129 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:28:30,129 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:28:30,129 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 05:28:30,129 INFO ]: Start accepts. Automaton has 7 states. Word has length 10 [2018-06-22 05:28:30,129 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:28:30,129 INFO ]: With dead ends: 13 [2018-06-22 05:28:30,129 INFO ]: Without dead ends: 13 [2018-06-22 05:28:30,130 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2018-06-22 05:28:30,130 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:28:30,131 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:28:30,131 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:28:30,131 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:28:30,131 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 05:28:30,131 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:28:30,132 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:28:30,132 INFO ]: Interpolant automaton has 7 states. [2018-06-22 05:28:30,132 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:28:30,132 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:28:30,132 INFO ]: Found error trace [2018-06-22 05:28:30,132 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:28:30,132 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:28:30,132 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 3 times [2018-06-22 05:28:30,132 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:28:30,133 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:28:30,133 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:28:30,134 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:28:30,134 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:28:30,298 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:28:30,717 WARN ]: Spent 146.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 11 [2018-06-22 05:28:30,749 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:28:30,749 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:28:30,750 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 05:28:30,765 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:28:30,868 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 05:28:30,868 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:28:30,874 INFO ]: Computing forward predicates... [2018-06-22 05:28:33,380 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 05:29:19,300 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:29:19,462 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:29:19,462 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2018-06-22 05:29:19,462 INFO ]: Interpolant automaton has 10 states [2018-06-22 05:29:19,462 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 05:29:19,462 INFO ]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-06-22 05:29:19,463 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 10 states. [2018-06-22 05:29:19,661 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:29:19,661 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 05:29:19,661 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 05:29:19,661 INFO ]: Start accepts. Automaton has 10 states. Word has length 12 [2018-06-22 05:29:19,661 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:29:19,661 INFO ]: With dead ends: 14 [2018-06-22 05:29:19,661 INFO ]: Without dead ends: 14 [2018-06-22 05:29:19,662 INFO ]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2018-06-22 05:29:19,662 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 05:29:19,663 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 05:29:19,663 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 05:29:19,664 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 05:29:19,664 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-22 05:29:19,664 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:29:19,664 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 05:29:19,664 INFO ]: Interpolant automaton has 10 states. [2018-06-22 05:29:19,664 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 05:29:19,664 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 05:29:19,664 INFO ]: Found error trace [2018-06-22 05:29:19,664 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:29:19,665 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:29:19,665 INFO ]: Analyzing trace with hash 679342766, now seen corresponding path program 4 times [2018-06-22 05:29:19,665 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:29:19,665 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:29:19,665 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:29:19,665 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:29:19,665 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:29:19,799 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:29:21,039 WARN ]: Spent 991.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-06-22 05:29:21,555 WARN ]: Spent 446.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 Received shutdown request... [2018-06-22 05:29:21,711 WARN ]: Verification canceled [2018-06-22 05:29:21,734 WARN ]: Timeout [2018-06-22 05:29:21,734 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:29:21 BoogieIcfgContainer [2018-06-22 05:29:21,734 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:29:21,752 INFO ]: Toolchain (without parser) took 67647.88 ms. Allocated memory was 309.9 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 254.4 MB in the beginning and 562.8 MB in the end (delta: -308.4 MB). Peak memory consumption was 889.6 MB. Max. memory is 3.6 GB. [2018-06-22 05:29:21,752 INFO ]: SmtParser took 0.11 ms. Allocated memory is still 309.9 MB. Free memory is still 274.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:29:21,753 INFO ]: ChcToBoogie took 538.09 ms. Allocated memory is still 309.9 MB. Free memory was 254.4 MB in the beginning and 252.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:29:21,753 INFO ]: Boogie Preprocessor took 64.59 ms. Allocated memory is still 309.9 MB. Free memory was 252.4 MB in the beginning and 250.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:29:21,754 INFO ]: RCFGBuilder took 381.13 ms. Allocated memory is still 309.9 MB. Free memory was 250.4 MB in the beginning and 236.3 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 3.6 GB. [2018-06-22 05:29:21,754 INFO ]: TraceAbstraction took 66636.12 ms. Allocated memory was 309.9 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 236.3 MB in the beginning and 562.8 MB in the end (delta: -326.5 MB). Peak memory consumption was 871.5 MB. Max. memory is 3.6 GB. [2018-06-22 05:29:21,758 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.11 ms. Allocated memory is still 309.9 MB. Free memory is still 274.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 538.09 ms. Allocated memory is still 309.9 MB. Free memory was 254.4 MB in the beginning and 252.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 64.59 ms. Allocated memory is still 309.9 MB. Free memory was 252.4 MB in the beginning and 250.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 381.13 ms. Allocated memory is still 309.9 MB. Free memory was 250.4 MB in the beginning and 236.3 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 66636.12 ms. Allocated memory was 309.9 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 236.3 MB in the beginning and 562.8 MB in the end (delta: -326.5 MB). Peak memory consumption was 871.5 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 analyzing trace of length 14 with TraceHistMax 6, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 66.2s OverallTime, 5 OverallIterations, 6 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 6 SDslu, 74 SDs, 0 SdLazy, 31 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 61.9s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 2106 SizeOfPredicates, 18 NumberOfNonLiveVariables, 885 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/44 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/hsortprime.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-29-21-827.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hsortprime.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-29-21-827.csv Completed graceful shutdown