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/hsort.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:28:12,769 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:28:12,774 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:28:12,791 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:28:12,791 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:28:12,793 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:28:12,794 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:28:12,799 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:28:12,800 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:28:12,803 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:28:12,804 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:28:12,804 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:28:12,805 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:28:12,809 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:28:12,809 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:28:12,810 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:28:12,820 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:28:12,823 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:28:12,824 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:28:12,831 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:28:12,833 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:28:12,835 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:28:12,835 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:28:12,836 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:28:12,836 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:28:12,841 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:28:12,842 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:28:12,843 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:28:12,848 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:28:12,848 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:28:12,849 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:28:12,850 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:28:12,850 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:28:12,851 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:28:12,852 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:28:12,853 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:28:12,873 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:28:12,873 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:28:12,875 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:28:12,875 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:28:12,876 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:28:12,877 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:28:12,877 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:28:12,877 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:28:12,877 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 05:28:12,878 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 05:28:12,881 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:28:12,881 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:28:12,925 INFO ]: Repository-Root is: /tmp [2018-06-22 05:28:12,943 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:28:12,948 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:28:12,949 INFO ]: Initializing SmtParser... [2018-06-22 05:28:12,950 INFO ]: SmtParser initialized [2018-06-22 05:28:12,950 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/hsort.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/hsort.c.smt2 unknown [2018-06-22 05:28:14,115 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/hsort.c.smt2 [2018-06-22 05:28:14,126 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:28:14,132 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:28:14,132 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:28:14,132 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:28:14,133 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 05:28:14,669 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:28:14 Unit [2018-06-22 05:28:14,669 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:28:14,671 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:28:14,671 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:28:14,671 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:28:14,694 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 05:28:14,694 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 05:28:14,702 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 05:28:14,702 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 05:28:14,720 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 05:28:14,722 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 05:28:14,724 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 05:28:14,728 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:28:14,729 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:28:14,729 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:28:14,729 INFO ]: RCFGBuilder initialized [2018-06-22 05:28:14,730 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 05:28:14,767 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:28:14,767 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:28:14,767 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:28:14,767 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:28:14,767 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:28:14,767 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 05:28:15,180 INFO ]: Using library mode [2018-06-22 05:28:15,181 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:28:15 BoogieIcfgContainer [2018-06-22 05:28:15,181 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:28:15,182 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:28:15,182 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:28:15,186 INFO ]: TraceAbstraction initialized [2018-06-22 05:28:15,186 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 05:28:15,187 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b80cd86 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 05:28:15,187 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 05:28:15,187 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b80cd86 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 05:28:15,188 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 05:28:15,193 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:28:15,204 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 05:28:15,510 INFO ]: Using default assertion order modulation [2018-06-22 05:28:15,510 INFO ]: Interprodecural is true [2018-06-22 05:28:15,510 INFO ]: Hoare is false [2018-06-22 05:28:15,511 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:28:15,511 INFO ]: Backedges is TWOTRACK [2018-06-22 05:28:15,511 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:28:15,511 INFO ]: Difference is false [2018-06-22 05:28:15,511 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:28:15,511 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:28:15,564 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:28:15,630 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:28:15,630 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 1285054476, 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 05:28:15,782 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:28:15,909 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:28:15,910 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:28:15,910 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:28:15,912 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:28:15,922 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:28:15,922 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 05:28:16,041 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:28:16,041 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:28:16,042 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:28:16,043 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:28:16,044 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 05:28:16,089 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 05:28:16,207 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:28:16,232 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:28:16,233 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:28:16,234 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:28:16,236 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:28:16,236 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:28:16,236 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:28:16,236 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:28:16,236 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:28:16,236 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:28:16,236 INFO ]: Found error trace [2018-06-22 05:28:16,236 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:28:16,236 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:28:16,237 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 05:28:16,237 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:28:16,237 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:28:16,239 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:28:16,239 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:28:16,239 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:28:16,350 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:28:16,710 WARN ]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 05:28:16,711 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:28:16,711 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:28:16,711 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 05:28:16,727 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 05:28:16,847 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:28:16,857 INFO ]: Computing forward predicates... [2018-06-22 05:28:17,480 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:28:17,515 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:28:17,515 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:28:17,515 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:28:17,516 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:28:17,516 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:28:17,516 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:28:17,680 WARN ]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 05:28:17,772 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:28:17,772 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 05:28:17,773 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 05:28:17,773 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:28:17,774 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:28:17,774 INFO ]: With dead ends: 10 [2018-06-22 05:28:17,774 INFO ]: Without dead ends: 10 [2018-06-22 05:28:17,775 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:28:17,775 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 05:28:17,776 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 05:28:17,776 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 05:28:17,776 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 05:28:17,776 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 05:28:17,777 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:28:17,777 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 05:28:17,778 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:28:17,778 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 05:28:17,778 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 05:28:17,778 INFO ]: Found error trace [2018-06-22 05:28:17,778 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:28:17,779 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:28:17,779 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 05:28:17,779 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:28:17,779 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:28:17,780 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:28:17,780 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:28:17,780 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:28:17,903 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:28:18,274 WARN ]: Spent 224.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-06-22 05:28:18,397 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:28:18,397 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:28:18,397 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 05:28:18,412 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 05:28:18,502 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:28:18,502 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:28:18,506 INFO ]: Computing forward predicates... [2018-06-22 05:28:18,829 WARN ]: Spent 118.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 1 [2018-06-22 05:28:21,221 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:28:21,255 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:28:21,255 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-22 05:28:21,255 INFO ]: Interpolant automaton has 6 states [2018-06-22 05:28:21,256 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 05:28:21,256 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:28:21,256 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-06-22 05:28:21,524 WARN ]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 05:28:21,781 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:28:21,781 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:28:21,781 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 05:28:21,781 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-22 05:28:21,781 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:28:21,782 INFO ]: With dead ends: 11 [2018-06-22 05:28:21,782 INFO ]: Without dead ends: 11 [2018-06-22 05:28:21,782 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-06-22 05:28:21,782 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:28:21,783 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:28:21,783 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:28:21,783 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:28:21,783 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 05:28:21,784 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:28:21,784 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:28:21,784 INFO ]: Interpolant automaton has 6 states. [2018-06-22 05:28:21,784 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:28:21,784 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:28:21,784 INFO ]: Found error trace [2018-06-22 05:28:21,784 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:28:21,784 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:28:21,784 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 05:28:21,784 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:28:21,784 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:28:21,785 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:28:21,785 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:28:21,785 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:28:21,857 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:28:22,078 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 5 DAG size of output: 1 [2018-06-22 05:28:23,133 WARN ]: Spent 1.00 s on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2018-06-22 05:28:23,239 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:28:23,239 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:28:23,239 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:28:23,248 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:28:23,356 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 05:28:23,356 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:28:23,363 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 05:29:27,089 INFO ]: Timeout while computing interpolants [2018-06-22 05:29:27,291 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:29:27,291 WARN ]: Verification canceled [2018-06-22 05:29:27,295 WARN ]: Timeout [2018-06-22 05:29:27,295 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:29:27 BoogieIcfgContainer [2018-06-22 05:29:27,295 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:29:27,295 INFO ]: Toolchain (without parser) took 73169.40 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 249.8 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:29:27,296 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:29:27,297 INFO ]: ChcToBoogie took 538.31 ms. Allocated memory is still 309.3 MB. Free memory was 249.8 MB in the beginning and 245.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:29:27,297 INFO ]: Boogie Preprocessor took 56.96 ms. Allocated memory is still 309.3 MB. Free memory is still 245.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:29:27,297 INFO ]: RCFGBuilder took 452.35 ms. Allocated memory is still 309.3 MB. Free memory was 245.8 MB in the beginning and 227.8 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 3.6 GB. [2018-06-22 05:29:27,298 INFO ]: TraceAbstraction took 72112.43 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 227.8 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:29:27,301 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 538.31 ms. Allocated memory is still 309.3 MB. Free memory was 249.8 MB in the beginning and 245.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 56.96 ms. Allocated memory is still 309.3 MB. Free memory is still 245.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 452.35 ms. Allocated memory is still 309.3 MB. Free memory was 245.8 MB in the beginning and 227.8 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 3.6 GB. * TraceAbstraction took 72112.43 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 227.8 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.3 GB. 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 11 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 21 quantified variables from 26 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 71.7s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 3 SDslu, 32 SDs, 0 SdLazy, 15 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 657 SizeOfPredicates, 12 NumberOfNonLiveVariables, 400 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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/hsort.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-29-27-315.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hsort.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-29-27-315.csv Completed graceful shutdown