java -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/chccomp2018/chcToBoogie_automizer.epf -i /storage/chc-comp/vmt-chc-benchmarks/ctigar/hsortprime.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 13:23:37,174 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 13:23:37,176 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 13:23:37,190 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 13:23:37,190 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 13:23:37,191 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 13:23:37,195 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 13:23:37,197 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 13:23:37,198 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 13:23:37,200 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 13:23:37,201 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 13:23:37,201 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 13:23:37,202 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 13:23:37,205 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 13:23:37,206 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 13:23:37,206 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 13:23:37,208 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 13:23:37,222 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 13:23:37,224 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 13:23:37,224 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 13:23:37,225 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 13:23:37,228 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 13:23:37,228 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 13:23:37,228 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 13:23:37,229 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 13:23:37,230 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 13:23:37,234 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 13:23:37,235 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 13:23:37,236 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 13:23:37,236 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 13:23:37,243 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 13:23:37,244 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 13:23:37,244 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 13:23:37,245 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 13:23:37,246 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 13:23:37,246 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 13:23:37,263 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 13:23:37,263 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 13:23:37,264 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 13:23:37,264 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 13:23:37,265 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 13:23:37,265 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 13:23:37,266 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 13:23:37,266 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 13:23:37,266 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 13:23:37,266 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 13:23:37,266 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 13:23:37,267 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 13:23:37,267 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 13:23:37,267 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 13:23:37,267 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 13:23:37,267 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 13:23:37,267 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 13:23:37,269 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 13:23:37,269 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 13:23:37,304 INFO ]: Repository-Root is: /tmp [2018-06-18 13:23:37,322 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 13:23:37,328 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 13:23:37,329 INFO ]: Initializing SmtParser... [2018-06-18 13:23:37,329 INFO ]: SmtParser initialized [2018-06-18 13:23:37,330 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/hsortprime.c.smt2 [2018-06-18 13:23:37,331 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 [2018-06-18 13:23:37,423 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/hsortprime.c.smt2 unknown [2018-06-18 13:23:37,895 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/hsortprime.c.smt2 [2018-06-18 13:23:37,900 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 13:23:37,905 INFO ]: Walking toolchain with 4 elements. [2018-06-18 13:23:37,906 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 13:23:37,906 INFO ]: Initializing ChcToBoogie... [2018-06-18 13:23:37,906 INFO ]: ChcToBoogie initialized [2018-06-18 13:23:37,913 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 01:23:37" (1/1) ... [2018-06-18 13:23:38,013 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:23:38 Unit [2018-06-18 13:23:38,013 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 13:23:38,014 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 13:23:38,014 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 13:23:38,014 INFO ]: Boogie Preprocessor initialized [2018-06-18 13:23:38,037 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:23:38" (1/1) ... [2018-06-18 13:23:38,037 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:23:38" (1/1) ... [2018-06-18 13:23:38,060 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:23:38" (1/1) ... [2018-06-18 13:23:38,060 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:23:38" (1/1) ... [2018-06-18 13:23:38,076 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:23:38" (1/1) ... [2018-06-18 13:23:38,087 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:23:38" (1/1) ... [2018-06-18 13:23:38,090 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:23:38" (1/1) ... [2018-06-18 13:23:38,094 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 13:23:38,094 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 13:23:38,094 INFO ]: Initializing RCFGBuilder... [2018-06-18 13:23:38,094 INFO ]: RCFGBuilder initialized [2018-06-18 13:23:38,100 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:23:38" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 13:23:38,123 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 13:23:38,123 INFO ]: Found specification of procedure False [2018-06-18 13:23:38,123 INFO ]: Found implementation of procedure False [2018-06-18 13:23:38,123 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 13:23:38,123 INFO ]: Found specification of procedure state [2018-06-18 13:23:38,123 INFO ]: Found implementation of procedure state [2018-06-18 13:23:38,123 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 13:23:38,123 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 13:23:38,123 INFO ]: Found implementation of procedure Ultimate.START [2018-06-18 13:23:38,375 INFO ]: Using library mode [2018-06-18 13:23:38,375 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 01:23:38 BoogieIcfgContainer [2018-06-18 13:23:38,375 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 13:23:38,377 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 13:23:38,377 INFO ]: Initializing TraceAbstraction... [2018-06-18 13:23:38,380 INFO ]: TraceAbstraction initialized [2018-06-18 13:23:38,380 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 01:23:37" (1/3) ... [2018-06-18 13:23:38,381 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64137628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 01:23:38, skipping insertion in model container [2018-06-18 13:23:38,381 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:23:38" (2/3) ... [2018-06-18 13:23:38,381 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64137628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 01:23:38, skipping insertion in model container [2018-06-18 13:23:38,382 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 01:23:38" (3/3) ... [2018-06-18 13:23:38,383 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 13:23:38,393 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 13:23:38,400 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 13:23:38,444 INFO ]: Using default assertion order modulation [2018-06-18 13:23:38,449 INFO ]: Interprodecural is true [2018-06-18 13:23:38,449 INFO ]: Hoare is false [2018-06-18 13:23:38,449 INFO ]: Compute interpolants for FPandBP [2018-06-18 13:23:38,449 INFO ]: Backedges is TWOTRACK [2018-06-18 13:23:38,449 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 13:23:38,449 INFO ]: Difference is false [2018-06-18 13:23:38,449 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 13:23:38,449 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 13:23:38,481 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 13:23:38,494 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 13:23:38,494 INFO ]: Found error trace [2018-06-18 13:23:38,495 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:23:38,495 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:23:38,506 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 13:23:38,508 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:23:38,509 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:23:38,550 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:23:38,550 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:23:38,550 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:23:38,587 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:23:38,596 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:23:38,758 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 13:23:38,760 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 13:23:38,760 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 13:23:38,762 INFO ]: Interpolant automaton has 4 states [2018-06-18 13:23:38,775 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 13:23:38,776 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 13:23:38,778 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 13:23:38,894 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:23:38,894 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 13:23:38,896 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 13:23:38,897 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 13:23:38,898 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:23:38,911 INFO ]: With dead ends: 13 [2018-06-18 13:23:38,911 INFO ]: Without dead ends: 13 [2018-06-18 13:23:38,913 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 13:23:38,934 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 13:23:38,954 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 13:23:38,957 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 13:23:38,958 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 13:23:38,959 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 13:23:38,959 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:23:38,959 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 13:23:38,959 INFO ]: Interpolant automaton has 4 states. [2018-06-18 13:23:38,959 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 13:23:38,961 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 13:23:38,961 INFO ]: Found error trace [2018-06-18 13:23:38,961 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:23:38,961 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:23:38,961 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 13:23:38,961 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:23:38,961 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:23:38,962 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:23:38,962 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:23:38,962 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:23:39,036 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:23:39,036 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:23:39,277 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 13:23:39,277 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:23:39,277 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 [2018-06-18 13:23:39,286 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:23:39,330 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:23:39,340 INFO ]: Computing forward predicates... [2018-06-18 13:23:39,931 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 13:23:39,966 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:23:39,966 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-18 13:23:39,967 INFO ]: Interpolant automaton has 9 states [2018-06-18 13:23:39,967 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-18 13:23:39,967 INFO ]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-18 13:23:39,967 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-18 13:23:40,563 WARN ]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-18 13:23:40,638 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:23:40,638 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 13:23:40,639 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 13:23:40,639 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-18 13:23:40,639 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:23:40,639 INFO ]: With dead ends: 15 [2018-06-18 13:23:40,640 INFO ]: Without dead ends: 15 [2018-06-18 13:23:40,641 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-06-18 13:23:40,641 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 13:23:40,643 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 13:23:40,643 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 13:23:40,645 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 13:23:40,645 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 13:23:40,645 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:23:40,645 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 13:23:40,645 INFO ]: Interpolant automaton has 9 states. [2018-06-18 13:23:40,645 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 13:23:40,646 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 13:23:40,646 INFO ]: Found error trace [2018-06-18 13:23:40,646 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:23:40,646 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:23:40,646 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 13:23:40,646 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:23:40,646 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:23:40,647 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:23:40,647 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:23:40,647 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:23:40,746 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:23:40,747 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:23:41,030 WARN ]: Spent 114.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2018-06-18 13:23:41,449 WARN ]: Spent 407.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-06-18 13:23:41,519 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 13:23:41,520 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:23:41,520 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 [2018-06-18 13:23:41,531 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 13:23:41,586 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 13:23:41,586 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:23:41,590 INFO ]: Computing forward predicates... [2018-06-18 13:23:41,748 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 9 [2018-06-18 13:23:41,925 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 13:23:41,952 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:23:41,952 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-18 13:23:41,952 INFO ]: Interpolant automaton has 11 states [2018-06-18 13:23:41,952 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-18 13:23:41,952 INFO ]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-06-18 13:23:41,953 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2018-06-18 13:23:42,088 WARN ]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-06-18 13:23:42,186 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:23:42,186 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-18 13:23:42,187 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 13:23:42,187 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-18 13:23:42,187 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:23:42,187 INFO ]: With dead ends: 17 [2018-06-18 13:23:42,187 INFO ]: Without dead ends: 17 [2018-06-18 13:23:42,188 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-06-18 13:23:42,188 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-18 13:23:42,191 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-18 13:23:42,191 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-18 13:23:42,192 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-18 13:23:42,192 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-18 13:23:42,192 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:23:42,192 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-18 13:23:42,192 INFO ]: Interpolant automaton has 11 states. [2018-06-18 13:23:42,192 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-18 13:23:42,193 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-18 13:23:42,193 INFO ]: Found error trace [2018-06-18 13:23:42,193 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:23:42,193 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:23:42,193 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-18 13:23:42,193 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:23:42,193 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:23:42,194 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:23:42,194 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:23:42,194 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:23:42,252 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:23:42,253 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:23:42,551 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-06-18 13:23:42,794 WARN ]: Spent 235.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-06-18 13:23:42,919 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 13:23:42,919 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:23:42,920 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 [2018-06-18 13:23:42,935 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-18 13:23:42,991 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-18 13:23:42,991 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:23:42,996 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-18 13:24:49,610 WARN ]: Removed 2 from assertion stack [2018-06-18 13:24:49,611 INFO ]: Timeout while computing interpolants [2018-06-18 13:24:49,811 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:24:49,811 WARN ]: Verification canceled [2018-06-18 13:24:49,817 WARN ]: Timeout [2018-06-18 13:24:49,817 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 01:24:49 BoogieIcfgContainer [2018-06-18 13:24:49,817 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 13:24:49,818 INFO ]: Toolchain (without parser) took 71917.37 ms. Allocated memory was 308.3 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 253.7 MB in the beginning and 567.5 MB in the end (delta: -313.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-18 13:24:49,819 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.3 MB. Free memory is still 273.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 13:24:49,819 INFO ]: ChcToBoogie took 108.06 ms. Allocated memory is still 308.3 MB. Free memory was 253.7 MB in the beginning and 247.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-18 13:24:49,820 INFO ]: Boogie Preprocessor took 79.56 ms. Allocated memory is still 308.3 MB. Free memory was 247.7 MB in the beginning and 246.7 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. [2018-06-18 13:24:49,821 INFO ]: RCFGBuilder took 281.02 ms. Allocated memory is still 308.3 MB. Free memory was 246.7 MB in the beginning and 231.5 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 3.6 GB. [2018-06-18 13:24:49,821 INFO ]: TraceAbstraction took 71440.39 ms. Allocated memory was 308.3 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 231.5 MB in the beginning and 567.5 MB in the end (delta: -336.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-18 13:24:49,830 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 308.3 MB. Free memory is still 273.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 108.06 ms. Allocated memory is still 308.3 MB. Free memory was 253.7 MB in the beginning and 247.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 79.56 ms. Allocated memory is still 308.3 MB. Free memory was 247.7 MB in the beginning and 246.7 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. * RCFGBuilder took 281.02 ms. Allocated memory is still 308.3 MB. Free memory was 246.7 MB in the beginning and 231.5 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 3.6 GB. * TraceAbstraction took 71440.39 ms. Allocated memory was 308.3 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 231.5 MB in the beginning and 567.5 MB in the end (delta: -336.1 MB). Peak memory consumption was 1.1 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 22 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 6277. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 71.3s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 SDtfs, 22 SDslu, 78 SDs, 0 SdLazy, 52 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 3816 SizeOfPredicates, 60 NumberOfNonLiveVariables, 332 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/26 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_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_13-24-49-847.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hsortprime.c.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_13-24-49-847.csv Completed graceful shutdown