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/hopv/lia/mochi/neg2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:50:59,987 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:50:59,989 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:51:00,002 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:51:00,002 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:51:00,003 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:51:00,004 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:51:00,008 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:51:00,009 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:51:00,011 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:51:00,012 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:51:00,012 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:51:00,013 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:51:00,014 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:51:00,018 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:51:00,019 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:51:00,021 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:51:00,032 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:51:00,034 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:51:00,035 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:51:00,036 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:51:00,038 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:51:00,038 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:51:00,038 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:51:00,039 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:51:00,040 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:51:00,040 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:51:00,041 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:51:00,042 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:51:00,042 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:51:00,043 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:51:00,043 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:51:00,044 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:51:00,044 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:51:00,045 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:51:00,045 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:51:00,062 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:51:00,067 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:51:00,067 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:51:00,067 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:51:00,068 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:51:00,069 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:51:00,069 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:51:00,069 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:51:00,069 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:51:00,069 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:51:00,070 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:51:00,070 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:51:00,070 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:51:00,070 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:51:00,070 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:51:00,070 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:51:00,071 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:51:00,072 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:51:00,073 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:51:00,119 INFO ]: Repository-Root is: /tmp [2018-06-22 01:51:00,135 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:51:00,141 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:51:00,143 INFO ]: Initializing SmtParser... [2018-06-22 01:51:00,143 INFO ]: SmtParser initialized [2018-06-22 01:51:00,144 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/neg2.smt2 [2018-06-22 01:51:00,145 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 01:51:00,237 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/neg2.smt2 unknown [2018-06-22 01:51:00,397 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/neg2.smt2 [2018-06-22 01:51:00,401 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:51:00,410 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:51:00,410 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:51:00,410 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:51:00,410 INFO ]: ChcToBoogie initialized [2018-06-22 01:51:00,414 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:51:00" (1/1) ... [2018-06-22 01:51:00,467 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:00 Unit [2018-06-22 01:51:00,467 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:51:00,467 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:51:00,467 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:51:00,467 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:51:00,487 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:00" (1/1) ... [2018-06-22 01:51:00,487 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:00" (1/1) ... [2018-06-22 01:51:00,492 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:00" (1/1) ... [2018-06-22 01:51:00,492 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:00" (1/1) ... [2018-06-22 01:51:00,495 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:00" (1/1) ... [2018-06-22 01:51:00,497 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:00" (1/1) ... [2018-06-22 01:51:00,499 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:00" (1/1) ... [2018-06-22 01:51:00,500 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:51:00,501 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:51:00,501 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:51:00,501 INFO ]: RCFGBuilder initialized [2018-06-22 01:51:00,501 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:00" (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 01:51:00,519 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:51:00,519 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:51:00,519 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:51:00,519 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:51:00,519 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:51:00,520 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:51:00,884 INFO ]: Using library mode [2018-06-22 01:51:00,885 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:51:00 BoogieIcfgContainer [2018-06-22 01:51:00,885 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:51:00,886 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:51:00,886 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:51:00,891 INFO ]: TraceAbstraction initialized [2018-06-22 01:51:00,891 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:51:00" (1/3) ... [2018-06-22 01:51:00,892 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e96653a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:51:00, skipping insertion in model container [2018-06-22 01:51:00,892 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:00" (2/3) ... [2018-06-22 01:51:00,892 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e96653a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:51:00, skipping insertion in model container [2018-06-22 01:51:00,892 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:51:00" (3/3) ... [2018-06-22 01:51:00,894 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:51:00,902 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:51:00,907 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:51:00,940 INFO ]: Using default assertion order modulation [2018-06-22 01:51:00,940 INFO ]: Interprodecural is true [2018-06-22 01:51:00,941 INFO ]: Hoare is false [2018-06-22 01:51:00,941 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:51:00,941 INFO ]: Backedges is TWOTRACK [2018-06-22 01:51:00,941 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:51:00,941 INFO ]: Difference is false [2018-06-22 01:51:00,941 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:51:00,941 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:51:00,954 INFO ]: Start isEmpty. Operand 23 states. [2018-06-22 01:51:00,963 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:51:00,964 INFO ]: Found error trace [2018-06-22 01:51:00,964 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:00,964 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:00,972 INFO ]: Analyzing trace with hash -837355597, now seen corresponding path program 1 times [2018-06-22 01:51:00,974 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:00,974 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:01,010 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:01,010 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:01,010 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:01,038 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:01,122 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:51:01,125 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:51:01,125 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:51:01,126 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:51:01,137 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:51:01,137 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:51:01,139 INFO ]: Start difference. First operand 23 states. Second operand 4 states. [2018-06-22 01:51:01,360 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:01,360 INFO ]: Finished difference Result 38 states and 50 transitions. [2018-06-22 01:51:01,361 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:51:01,362 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-22 01:51:01,362 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:01,371 INFO ]: With dead ends: 38 [2018-06-22 01:51:01,371 INFO ]: Without dead ends: 38 [2018-06-22 01:51:01,373 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:51:01,389 INFO ]: Start minimizeSevpa. Operand 38 states. [2018-06-22 01:51:01,422 INFO ]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-06-22 01:51:01,423 INFO ]: Start removeUnreachable. Operand 38 states. [2018-06-22 01:51:01,427 INFO ]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2018-06-22 01:51:01,428 INFO ]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 7 [2018-06-22 01:51:01,428 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:01,428 INFO ]: Abstraction has 38 states and 50 transitions. [2018-06-22 01:51:01,428 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:51:01,428 INFO ]: Start isEmpty. Operand 38 states and 50 transitions. [2018-06-22 01:51:01,431 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-22 01:51:01,431 INFO ]: Found error trace [2018-06-22 01:51:01,431 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:01,432 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:01,432 INFO ]: Analyzing trace with hash -2009839517, now seen corresponding path program 1 times [2018-06-22 01:51:01,432 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:01,432 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:01,433 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:01,433 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:01,433 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:01,438 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:01,575 INFO ]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 01:51:01,575 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:51:01,575 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 01:51:01,587 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:51:01,631 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:01,644 INFO ]: Computing forward predicates... [2018-06-22 01:51:01,691 INFO ]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 01:51:01,727 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:51:01,727 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 01:51:01,728 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:51:01,728 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:51:01,728 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:51:01,729 INFO ]: Start difference. First operand 38 states and 50 transitions. Second operand 4 states. [2018-06-22 01:51:02,388 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:02,388 INFO ]: Finished difference Result 55 states and 73 transitions. [2018-06-22 01:51:02,388 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:51:02,388 INFO ]: Start accepts. Automaton has 4 states. Word has length 16 [2018-06-22 01:51:02,388 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:02,392 INFO ]: With dead ends: 55 [2018-06-22 01:51:02,392 INFO ]: Without dead ends: 55 [2018-06-22 01:51:02,392 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:51:02,392 INFO ]: Start minimizeSevpa. Operand 55 states. [2018-06-22 01:51:02,400 INFO ]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-06-22 01:51:02,400 INFO ]: Start removeUnreachable. Operand 55 states. [2018-06-22 01:51:02,402 INFO ]: Finished removeUnreachable. Reduced from 55 states to 55 states and 73 transitions. [2018-06-22 01:51:02,403 INFO ]: Start accepts. Automaton has 55 states and 73 transitions. Word has length 16 [2018-06-22 01:51:02,403 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:02,403 INFO ]: Abstraction has 55 states and 73 transitions. [2018-06-22 01:51:02,403 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:51:02,403 INFO ]: Start isEmpty. Operand 55 states and 73 transitions. [2018-06-22 01:51:02,406 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 01:51:02,406 INFO ]: Found error trace [2018-06-22 01:51:02,406 INFO ]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:02,407 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:02,407 INFO ]: Analyzing trace with hash 997383825, now seen corresponding path program 1 times [2018-06-22 01:51:02,407 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:02,407 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:02,408 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:02,408 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:02,408 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:02,435 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:02,972 INFO ]: Checked inductivity of 48 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-06-22 01:51:02,973 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:51:02,973 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:51:02,986 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:03,023 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:03,029 INFO ]: Computing forward predicates... [2018-06-22 01:51:04,383 INFO ]: Checked inductivity of 48 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-06-22 01:51:04,417 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:51:04,417 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2018-06-22 01:51:04,417 INFO ]: Interpolant automaton has 24 states [2018-06-22 01:51:04,417 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 01:51:04,418 INFO ]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2018-06-22 01:51:04,419 INFO ]: Start difference. First operand 55 states and 73 transitions. Second operand 24 states. [2018-06-22 01:51:06,582 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:06,582 INFO ]: Finished difference Result 123 states and 209 transitions. [2018-06-22 01:51:06,582 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-06-22 01:51:06,582 INFO ]: Start accepts. Automaton has 24 states. Word has length 41 [2018-06-22 01:51:06,583 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:06,589 INFO ]: With dead ends: 123 [2018-06-22 01:51:06,589 INFO ]: Without dead ends: 99 [2018-06-22 01:51:06,590 INFO ]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=218, Invalid=1588, Unknown=0, NotChecked=0, Total=1806 [2018-06-22 01:51:06,590 INFO ]: Start minimizeSevpa. Operand 99 states. [2018-06-22 01:51:06,622 INFO ]: Finished minimizeSevpa. Reduced states from 99 to 72. [2018-06-22 01:51:06,622 INFO ]: Start removeUnreachable. Operand 72 states. [2018-06-22 01:51:06,624 INFO ]: Finished removeUnreachable. Reduced from 72 states to 72 states and 103 transitions. [2018-06-22 01:51:06,625 INFO ]: Start accepts. Automaton has 72 states and 103 transitions. Word has length 41 [2018-06-22 01:51:06,625 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:06,625 INFO ]: Abstraction has 72 states and 103 transitions. [2018-06-22 01:51:06,625 INFO ]: Interpolant automaton has 24 states. [2018-06-22 01:51:06,625 INFO ]: Start isEmpty. Operand 72 states and 103 transitions. [2018-06-22 01:51:06,629 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 01:51:06,629 INFO ]: Found error trace [2018-06-22 01:51:06,630 INFO ]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:06,630 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:06,630 INFO ]: Analyzing trace with hash -131110287, now seen corresponding path program 1 times [2018-06-22 01:51:06,630 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:06,630 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:06,631 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:06,631 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:06,631 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:06,652 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:06,828 INFO ]: Checked inductivity of 48 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-06-22 01:51:06,828 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:51:06,828 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 01:51:06,835 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:06,861 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:06,866 INFO ]: Computing forward predicates... [2018-06-22 01:51:07,224 INFO ]: Checked inductivity of 48 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-06-22 01:51:07,257 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:51:07,257 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2018-06-22 01:51:07,258 INFO ]: Interpolant automaton has 24 states [2018-06-22 01:51:07,258 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 01:51:07,258 INFO ]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2018-06-22 01:51:07,258 INFO ]: Start difference. First operand 72 states and 103 transitions. Second operand 24 states. [2018-06-22 01:51:08,742 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:08,743 INFO ]: Finished difference Result 123 states and 211 transitions. [2018-06-22 01:51:08,745 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-06-22 01:51:08,745 INFO ]: Start accepts. Automaton has 24 states. Word has length 41 [2018-06-22 01:51:08,745 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:08,748 INFO ]: With dead ends: 123 [2018-06-22 01:51:08,748 INFO ]: Without dead ends: 108 [2018-06-22 01:51:08,749 INFO ]: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=191, Invalid=1369, Unknown=0, NotChecked=0, Total=1560 [2018-06-22 01:51:08,749 INFO ]: Start minimizeSevpa. Operand 108 states. [2018-06-22 01:51:08,774 INFO ]: Finished minimizeSevpa. Reduced states from 108 to 75. [2018-06-22 01:51:08,774 INFO ]: Start removeUnreachable. Operand 75 states. [2018-06-22 01:51:08,776 INFO ]: Finished removeUnreachable. Reduced from 75 states to 75 states and 106 transitions. [2018-06-22 01:51:08,776 INFO ]: Start accepts. Automaton has 75 states and 106 transitions. Word has length 41 [2018-06-22 01:51:08,776 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:08,776 INFO ]: Abstraction has 75 states and 106 transitions. [2018-06-22 01:51:08,776 INFO ]: Interpolant automaton has 24 states. [2018-06-22 01:51:08,776 INFO ]: Start isEmpty. Operand 75 states and 106 transitions. [2018-06-22 01:51:08,780 INFO ]: Finished isEmpty. Found accepting run of length 60 [2018-06-22 01:51:08,780 INFO ]: Found error trace [2018-06-22 01:51:08,780 INFO ]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:08,780 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:08,780 INFO ]: Analyzing trace with hash 1563282745, now seen corresponding path program 2 times [2018-06-22 01:51:08,780 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:08,780 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:08,781 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:08,781 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:08,781 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:08,788 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:08,943 INFO ]: Checked inductivity of 117 backedges. 28 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-06-22 01:51:08,943 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:51:08,943 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 01:51:08,958 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 01:51:09,027 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:51:09,027 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:09,030 INFO ]: Computing forward predicates... [2018-06-22 01:51:09,038 INFO ]: Checked inductivity of 117 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-06-22 01:51:09,058 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:51:09,058 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 01:51:09,058 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:51:09,058 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:51:09,059 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:51:09,059 INFO ]: Start difference. First operand 75 states and 106 transitions. Second operand 4 states. [2018-06-22 01:51:09,102 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:09,102 INFO ]: Finished difference Result 49 states and 60 transitions. [2018-06-22 01:51:09,103 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:51:09,103 INFO ]: Start accepts. Automaton has 4 states. Word has length 59 [2018-06-22 01:51:09,103 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:09,103 INFO ]: With dead ends: 49 [2018-06-22 01:51:09,103 INFO ]: Without dead ends: 0 [2018-06-22 01:51:09,103 INFO ]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:51:09,103 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:51:09,103 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:51:09,103 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:51:09,103 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:51:09,103 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2018-06-22 01:51:09,103 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:09,104 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:51:09,104 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:51:09,104 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:51:09,104 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:51:09,108 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:51:09 BoogieIcfgContainer [2018-06-22 01:51:09,108 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:51:09,108 INFO ]: Toolchain (without parser) took 8707.00 ms. Allocated memory was 309.3 MB in the beginning and 387.4 MB in the end (delta: 78.1 MB). Free memory was 265.9 MB in the beginning and 324.6 MB in the end (delta: -58.8 MB). Peak memory consumption was 19.3 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:09,112 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:51:09,112 INFO ]: ChcToBoogie took 56.82 ms. Allocated memory is still 309.3 MB. Free memory was 265.9 MB in the beginning and 263.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:09,113 INFO ]: Boogie Preprocessor took 32.69 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 261.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:09,113 INFO ]: RCFGBuilder took 384.58 ms. Allocated memory is still 309.3 MB. Free memory was 261.9 MB in the beginning and 252.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:09,114 INFO ]: TraceAbstraction took 8221.58 ms. Allocated memory was 309.3 MB in the beginning and 387.4 MB in the end (delta: 78.1 MB). Free memory was 252.9 MB in the beginning and 324.6 MB in the end (delta: -71.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:09,118 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 56.82 ms. Allocated memory is still 309.3 MB. Free memory was 265.9 MB in the beginning and 263.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 32.69 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 261.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 384.58 ms. Allocated memory is still 309.3 MB. Free memory was 261.9 MB in the beginning and 252.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 8221.58 ms. Allocated memory was 309.3 MB in the beginning and 387.4 MB in the end (delta: 78.1 MB). Free memory was 252.9 MB in the beginning and 324.6 MB in the end (delta: -71.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. SAFE Result, 8.1s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 4.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 152 SDtfs, 216 SDslu, 959 SDs, 0 SdLazy, 1708 SolverSat, 181 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 240 GetRequests, 150 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 312 ConstructedInterpolants, 16 QuantifiedInterpolants, 36758 SizeOfPredicates, 32 NumberOfNonLiveVariables, 533 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 352/434 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/neg2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-51-09-142.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/neg2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-51-09-142.csv Received shutdown request...