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/barbrprime.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:09:36,896 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:09:36,898 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:09:36,911 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:09:36,911 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:09:36,912 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:09:36,916 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:09:36,919 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:09:36,921 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:09:36,923 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:09:36,924 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:09:36,924 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:09:36,925 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:09:36,926 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:09:36,927 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:09:36,931 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:09:36,932 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:09:36,942 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:09:36,944 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:09:36,945 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:09:36,946 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:09:36,951 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:09:36,951 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:09:36,951 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:09:36,952 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:09:36,953 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:09:36,956 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:09:36,957 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:09:36,958 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:09:36,958 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:09:36,959 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:09:36,959 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:09:36,960 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:09:36,964 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:09:36,964 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:09:36,965 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:09:36,989 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:09:36,989 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:09:36,991 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:09:36,991 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:09:36,993 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:09:36,993 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:09:36,995 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:09:36,996 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:09:36,996 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:09:36,996 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:09:36,996 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:09:36,997 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:09:36,997 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:09:36,998 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:09:36,998 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:09:36,998 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:09:36,998 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:09:37,000 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:09:37,000 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:09:37,048 INFO ]: Repository-Root is: /tmp [2018-06-22 05:09:37,065 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:09:37,069 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:09:37,071 INFO ]: Initializing SmtParser... [2018-06-22 05:09:37,071 INFO ]: SmtParser initialized [2018-06-22 05:09:37,071 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/barbrprime.c.smt2 [2018-06-22 05:09:37,073 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 05:09:37,170 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/barbrprime.c.smt2 unknown [2018-06-22 05:09:37,843 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/barbrprime.c.smt2 [2018-06-22 05:09:37,848 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:09:37,858 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:09:37,858 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:09:37,858 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:09:37,858 INFO ]: ChcToBoogie initialized [2018-06-22 05:09:37,902 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:09:37" (1/1) ... [2018-06-22 05:09:37,999 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:37 Unit [2018-06-22 05:09:37,999 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:09:38,000 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:09:38,000 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:09:38,000 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:09:38,024 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:37" (1/1) ... [2018-06-22 05:09:38,024 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:37" (1/1) ... [2018-06-22 05:09:38,041 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:37" (1/1) ... [2018-06-22 05:09:38,041 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:37" (1/1) ... [2018-06-22 05:09:38,065 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:37" (1/1) ... [2018-06-22 05:09:38,067 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:37" (1/1) ... [2018-06-22 05:09:38,072 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:37" (1/1) ... [2018-06-22 05:09:38,078 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:09:38,078 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:09:38,078 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:09:38,078 INFO ]: RCFGBuilder initialized [2018-06-22 05:09:38,079 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:37" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:09:38,095 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:09:38,095 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:09:38,095 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:09:38,095 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:09:38,095 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:09:38,095 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 05:09:38,555 INFO ]: Using library mode [2018-06-22 05:09:38,556 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:09:38 BoogieIcfgContainer [2018-06-22 05:09:38,556 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:09:38,557 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:09:38,557 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:09:38,560 INFO ]: TraceAbstraction initialized [2018-06-22 05:09:38,560 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:09:37" (1/3) ... [2018-06-22 05:09:38,561 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677b77a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:09:38, skipping insertion in model container [2018-06-22 05:09:38,561 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:37" (2/3) ... [2018-06-22 05:09:38,561 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677b77a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:09:38, skipping insertion in model container [2018-06-22 05:09:38,562 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:09:38" (3/3) ... [2018-06-22 05:09:38,563 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:09:38,601 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:09:38,627 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:09:39,050 INFO ]: Using default assertion order modulation [2018-06-22 05:09:39,050 INFO ]: Interprodecural is true [2018-06-22 05:09:39,050 INFO ]: Hoare is false [2018-06-22 05:09:39,050 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:09:39,050 INFO ]: Backedges is TWOTRACK [2018-06-22 05:09:39,050 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:09:39,050 INFO ]: Difference is false [2018-06-22 05:09:39,050 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:09:39,050 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:09:39,065 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:09:39,078 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:09:39,078 INFO ]: Found error trace [2018-06-22 05:09:39,079 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:09:39,079 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:09:39,082 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 05:09:39,084 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:09:39,084 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:09:39,121 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:39,121 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:09:39,121 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:39,176 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:39,294 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:39,296 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:09:39,296 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:09:39,298 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:09:39,309 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:09:39,310 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:09:39,312 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:09:39,416 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:09:39,417 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:09:39,418 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:09:39,419 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:09:39,419 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:09:39,429 INFO ]: With dead ends: 9 [2018-06-22 05:09:39,429 INFO ]: Without dead ends: 9 [2018-06-22 05:09:39,434 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 05:09:39,453 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:09:39,478 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:09:39,479 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:09:39,480 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:09:39,481 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:09:39,481 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:09:39,481 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:09:39,481 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:09:39,481 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:09:39,482 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:09:39,482 INFO ]: Found error trace [2018-06-22 05:09:39,482 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:09:39,482 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:09:39,482 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 05:09:39,482 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:09:39,482 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:09:39,483 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:39,483 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:09:39,483 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:39,666 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:39,936 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:39,936 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:09:39,988 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 05:09:39,995 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:09:40,131 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:40,145 INFO ]: Computing forward predicates... [2018-06-22 05:09:40,526 WARN ]: Spent 191.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 1 [2018-06-22 05:09:40,943 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:40,979 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:09:40,979 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:09:40,980 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:09:40,980 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:09:40,980 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:09:40,980 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:09:41,038 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:09:41,039 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:09:41,039 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 05:09:41,039 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:09:41,039 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:09:41,040 INFO ]: With dead ends: 11 [2018-06-22 05:09:41,040 INFO ]: Without dead ends: 11 [2018-06-22 05:09:41,041 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:09:41,041 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:09:41,042 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:09:41,042 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:09:41,042 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:09:41,042 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 05:09:41,043 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:09:41,043 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:09:41,043 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:09:41,043 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:09:41,044 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:09:41,044 INFO ]: Found error trace [2018-06-22 05:09:41,044 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:09:41,044 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:09:41,044 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-22 05:09:41,044 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:09:41,044 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:09:41,046 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:41,046 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:09:41,046 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:41,271 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:41,840 WARN ]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 05:09:42,137 WARN ]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 05:09:42,157 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:42,157 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:09:42,158 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:09:42,164 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 05:09:42,438 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:09:42,438 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:42,446 INFO ]: Computing forward predicates... [2018-06-22 05:09:42,754 WARN ]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 05:09:45,644 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:45,680 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:09:45,680 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 05:09:45,680 INFO ]: Interpolant automaton has 7 states [2018-06-22 05:09:45,680 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 05:09:45,680 INFO ]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-22 05:09:45,680 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-06-22 05:09:45,867 WARN ]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 05:09:46,338 WARN ]: Spent 430.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-06-22 05:09:46,525 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:09:46,525 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:09:46,525 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 05:09:46,525 INFO ]: Start accepts. Automaton has 7 states. Word has length 10 [2018-06-22 05:09:46,525 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:09:46,525 INFO ]: With dead ends: 13 [2018-06-22 05:09:46,525 INFO ]: Without dead ends: 13 [2018-06-22 05:09:46,526 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2018-06-22 05:09:46,526 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:09:46,528 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:09:46,528 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:09:46,529 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:09:46,529 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 05:09:46,529 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:09:46,529 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:09:46,529 INFO ]: Interpolant automaton has 7 states. [2018-06-22 05:09:46,529 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:09:46,529 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:09:46,529 INFO ]: Found error trace [2018-06-22 05:09:46,530 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:09:46,530 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:09:46,530 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 3 times [2018-06-22 05:09:46,530 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:09:46,530 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:09:46,531 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:46,531 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:09:46,531 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:46,745 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:47,368 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:47,368 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:09:47,368 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 05:09:47,374 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:09:47,653 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 05:09:47,654 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:47,665 INFO ]: Computing forward predicates... [2018-06-22 05:09:51,992 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:52,017 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:09:52,017 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-06-22 05:09:52,017 INFO ]: Interpolant automaton has 8 states [2018-06-22 05:09:52,017 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 05:09:52,017 INFO ]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:09:52,018 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 8 states. [2018-06-22 05:09:52,390 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:09:52,390 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 05:09:52,390 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 05:09:52,390 INFO ]: Start accepts. Automaton has 8 states. Word has length 12 [2018-06-22 05:09:52,390 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:09:52,390 INFO ]: With dead ends: 14 [2018-06-22 05:09:52,390 INFO ]: Without dead ends: 14 [2018-06-22 05:09:52,391 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2018-06-22 05:09:52,391 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 05:09:52,392 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 05:09:52,392 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 05:09:52,393 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 05:09:52,393 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-22 05:09:52,393 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:09:52,393 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 05:09:52,393 INFO ]: Interpolant automaton has 8 states. [2018-06-22 05:09:52,393 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 05:09:52,393 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 05:09:52,393 INFO ]: Found error trace [2018-06-22 05:09:52,393 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:09:52,393 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:09:52,394 INFO ]: Analyzing trace with hash 679342766, now seen corresponding path program 4 times [2018-06-22 05:09:52,394 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:09:52,394 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:09:52,394 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:52,394 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:09:52,394 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:52,568 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:53,078 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:53,078 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:09:53,078 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:09:53,086 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 05:09:53,375 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 05:09:53,376 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:53,385 INFO ]: Computing forward predicates... [2018-06-22 05:09:53,639 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:53,662 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:09:53,663 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-06-22 05:09:53,663 INFO ]: Interpolant automaton has 10 states [2018-06-22 05:09:53,663 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 05:09:53,663 INFO ]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-06-22 05:09:53,663 INFO ]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2018-06-22 05:09:53,819 WARN ]: Spent 115.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-06-22 05:09:54,164 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:09:54,164 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-22 05:09:54,165 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 05:09:54,165 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-22 05:09:54,165 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:09:54,165 INFO ]: With dead ends: 16 [2018-06-22 05:09:54,165 INFO ]: Without dead ends: 16 [2018-06-22 05:09:54,165 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2018-06-22 05:09:54,166 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-22 05:09:54,167 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-22 05:09:54,167 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-22 05:09:54,168 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-22 05:09:54,168 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-06-22 05:09:54,168 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:09:54,168 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-22 05:09:54,168 INFO ]: Interpolant automaton has 10 states. [2018-06-22 05:09:54,168 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-22 05:09:54,168 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 05:09:54,168 INFO ]: Found error trace [2018-06-22 05:09:54,168 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:09:54,168 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:09:54,168 INFO ]: Analyzing trace with hash 39881678, now seen corresponding path program 5 times [2018-06-22 05:09:54,169 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:09:54,169 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:09:54,169 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:54,169 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:09:54,169 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:54,348 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:55,000 WARN ]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 05:09:55,143 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:55,143 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:09:55,143 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 05:09:55,162 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:09:55,520 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-06-22 05:09:55,520 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:55,533 INFO ]: Computing forward predicates... [2018-06-22 05:09:57,497 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:57,521 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:09:57,521 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-06-22 05:09:57,521 INFO ]: Interpolant automaton has 12 states [2018-06-22 05:09:57,522 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 05:09:57,522 INFO ]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-06-22 05:09:57,522 INFO ]: Start difference. First operand 16 states and 16 transitions. Second operand 12 states. [2018-06-22 05:09:57,843 WARN ]: Spent 120.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-06-22 05:09:58,337 WARN ]: Spent 138.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-06-22 05:09:58,339 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:09:58,339 INFO ]: Finished difference Result 18 states and 18 transitions. [2018-06-22 05:09:58,339 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 05:09:58,339 INFO ]: Start accepts. Automaton has 12 states. Word has length 15 [2018-06-22 05:09:58,339 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:09:58,339 INFO ]: With dead ends: 18 [2018-06-22 05:09:58,339 INFO ]: Without dead ends: 18 [2018-06-22 05:09:58,340 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2018-06-22 05:09:58,340 INFO ]: Start minimizeSevpa. Operand 18 states. [2018-06-22 05:09:58,341 INFO ]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-06-22 05:09:58,341 INFO ]: Start removeUnreachable. Operand 18 states. [2018-06-22 05:09:58,342 INFO ]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-06-22 05:09:58,342 INFO ]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-06-22 05:09:58,342 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:09:58,342 INFO ]: Abstraction has 18 states and 18 transitions. [2018-06-22 05:09:58,342 INFO ]: Interpolant automaton has 12 states. [2018-06-22 05:09:58,342 INFO ]: Start isEmpty. Operand 18 states and 18 transitions. [2018-06-22 05:09:58,342 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 05:09:58,342 INFO ]: Found error trace [2018-06-22 05:09:58,342 INFO ]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:09:58,343 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:09:58,343 INFO ]: Analyzing trace with hash -301900562, now seen corresponding path program 6 times [2018-06-22 05:09:58,343 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:09:58,343 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:09:58,343 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:58,343 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:09:58,343 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:58,621 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:59,250 WARN ]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 05:09:59,494 WARN ]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-22 05:09:59,699 INFO ]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:59,699 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:09:59,699 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:09:59,713 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 05:10:00,350 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-06-22 05:10:00,351 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:10:00,366 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 05:10:40,632 INFO ]: Timeout while computing interpolants [2018-06-22 05:10:40,833 WARN ]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:10:40,833 WARN ]: Verification canceled [2018-06-22 05:10:40,837 WARN ]: Timeout [2018-06-22 05:10:40,838 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:10:40 BoogieIcfgContainer [2018-06-22 05:10:40,838 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:10:40,850 INFO ]: Toolchain (without parser) took 62989.60 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 219.9 MB in the beginning and 489.9 MB in the end (delta: -270.0 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-22 05:10:40,850 INFO ]: SmtParser took 0.07 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 05:10:40,851 INFO ]: ChcToBoogie took 141.13 ms. Allocated memory is still 309.3 MB. Free memory was 219.9 MB in the beginning and 217.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:10:40,851 INFO ]: Boogie Preprocessor took 78.08 ms. Allocated memory is still 309.3 MB. Free memory was 217.9 MB in the beginning and 215.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:10:40,852 INFO ]: RCFGBuilder took 477.51 ms. Allocated memory is still 309.3 MB. Free memory was 215.9 MB in the beginning and 268.1 MB in the end (delta: -52.2 MB). Peak memory consumption was 32.4 MB. Max. memory is 3.6 GB. [2018-06-22 05:10:40,852 INFO ]: TraceAbstraction took 62280.76 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 268.1 MB in the beginning and 489.9 MB in the end (delta: -221.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-22 05:10:40,856 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 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 141.13 ms. Allocated memory is still 309.3 MB. Free memory was 219.9 MB in the beginning and 217.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 78.08 ms. Allocated memory is still 309.3 MB. Free memory was 217.9 MB in the beginning and 215.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 477.51 ms. Allocated memory is still 309.3 MB. Free memory was 215.9 MB in the beginning and 268.1 MB in the end (delta: -52.2 MB). Peak memory consumption was 32.4 MB. Max. memory is 3.6 GB. * TraceAbstraction took 62280.76 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 268.1 MB in the beginning and 489.9 MB in the end (delta: -221.8 MB). Peak memory consumption was 1.4 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 18 with TraceHistMax 10, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 22177 quantified variables from 18 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 61.8s OverallTime, 7 OverallIterations, 10 TraceHistogramMax, 2.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 17 SDslu, 136 SDs, 0 SdLazy, 51 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 45 SyntacticMatches, 16 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=6, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 6592 SizeOfPredicates, 40 NumberOfNonLiveVariables, 5101 ConjunctsInSsa, 261 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/158 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/barbrprime.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-10-40-879.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/barbrprime.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-10-40-879.csv Completed graceful shutdown