java -Xmx8000000000 -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_No_Goto.epf -i /storage/chc-comp18-benchmarks/lra/chc-lra-0022.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3d12b04 [2018-06-19 23:39:08,035 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-19 23:39:08,037 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-19 23:39:08,048 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-19 23:39:08,048 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-19 23:39:08,049 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-19 23:39:08,051 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-19 23:39:08,053 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-19 23:39:08,055 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-19 23:39:08,055 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-19 23:39:08,058 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-19 23:39:08,058 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-19 23:39:08,059 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-19 23:39:08,060 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-19 23:39:08,060 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-19 23:39:08,064 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-19 23:39:08,066 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-19 23:39:08,079 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-19 23:39:08,080 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-19 23:39:08,081 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-19 23:39:08,082 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-19 23:39:08,084 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-19 23:39:08,085 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-19 23:39:08,085 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-19 23:39:08,086 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-19 23:39:08,086 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-19 23:39:08,092 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-19 23:39:08,093 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-19 23:39:08,093 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-19 23:39:08,094 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-19 23:39:08,094 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-19 23:39:08,095 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-19 23:39:08,095 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-19 23:39:08,096 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-19 23:39:08,097 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-19 23:39:08,097 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-19 23:39:08,111 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-19 23:39:08,112 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-19 23:39:08,112 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-19 23:39:08,112 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-19 23:39:08,113 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-19 23:39:08,113 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-19 23:39:08,114 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-19 23:39:08,114 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-19 23:39:08,114 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-19 23:39:08,114 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-19 23:39:08,114 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-19 23:39:08,115 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-19 23:39:08,115 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-19 23:39:08,115 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-19 23:39:08,115 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-19 23:39:08,115 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-19 23:39:08,116 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-19 23:39:08,116 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-19 23:39:08,116 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-19 23:39:08,117 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-19 23:39:08,117 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-19 23:39:08,152 INFO ]: Repository-Root is: /tmp [2018-06-19 23:39:08,175 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-19 23:39:08,183 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-19 23:39:08,184 INFO ]: Initializing SmtParser... [2018-06-19 23:39:08,185 INFO ]: SmtParser initialized [2018-06-19 23:39:08,185 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp18-benchmarks/lra/chc-lra-0022.smt2 [2018-06-19 23:39:08,187 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 [2018-06-19 23:39:08,282 INFO ]: Executing SMT file /storage/chc-comp18-benchmarks/lra/chc-lra-0022.smt2 unknown [2018-06-19 23:39:08,669 INFO ]: Succesfully executed SMT file /storage/chc-comp18-benchmarks/lra/chc-lra-0022.smt2 [2018-06-19 23:39:08,673 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-19 23:39:08,678 INFO ]: Walking toolchain with 4 elements. [2018-06-19 23:39:08,679 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-19 23:39:08,679 INFO ]: Initializing ChcToBoogie... [2018-06-19 23:39:08,679 INFO ]: ChcToBoogie initialized [2018-06-19 23:39:08,683 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 19.06 11:39:08" (1/1) ... [2018-06-19 23:39:08,796 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:08 Unit [2018-06-19 23:39:08,796 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-19 23:39:08,797 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-19 23:39:08,797 INFO ]: Initializing Boogie Preprocessor... [2018-06-19 23:39:08,797 INFO ]: Boogie Preprocessor initialized [2018-06-19 23:39:08,820 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:08" (1/1) ... [2018-06-19 23:39:08,821 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:08" (1/1) ... [2018-06-19 23:39:08,849 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:08" (1/1) ... [2018-06-19 23:39:08,849 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:08" (1/1) ... [2018-06-19 23:39:08,866 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:08" (1/1) ... [2018-06-19 23:39:08,867 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:08" (1/1) ... [2018-06-19 23:39:08,871 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:08" (1/1) ... [2018-06-19 23:39:08,876 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-19 23:39:08,877 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-19 23:39:08,877 INFO ]: Initializing RCFGBuilder... [2018-06-19 23:39:08,877 INFO ]: RCFGBuilder initialized [2018-06-19 23:39:08,878 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:08" (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 [2018-06-19 23:39:08,908 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-19 23:39:08,908 INFO ]: Found specification of procedure False [2018-06-19 23:39:08,908 INFO ]: Found implementation of procedure False [2018-06-19 23:39:08,908 INFO ]: Specification and implementation of procedure invariant given in one single declaration [2018-06-19 23:39:08,908 INFO ]: Found specification of procedure invariant [2018-06-19 23:39:08,908 INFO ]: Found implementation of procedure invariant [2018-06-19 23:39:08,908 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-19 23:39:08,908 INFO ]: Found specification of procedure Ultimate.START [2018-06-19 23:39:08,908 INFO ]: Found implementation of procedure Ultimate.START [2018-06-19 23:39:09,370 INFO ]: Using library mode [2018-06-19 23:39:09,371 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.06 11:39:09 BoogieIcfgContainer [2018-06-19 23:39:09,371 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-19 23:39:09,373 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-19 23:39:09,374 INFO ]: Initializing TraceAbstraction... [2018-06-19 23:39:09,377 INFO ]: TraceAbstraction initialized [2018-06-19 23:39:09,377 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 19.06 11:39:08" (1/3) ... [2018-06-19 23:39:09,378 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66708a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 19.06 11:39:09, skipping insertion in model container [2018-06-19 23:39:09,378 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:08" (2/3) ... [2018-06-19 23:39:09,378 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66708a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.06 11:39:09, skipping insertion in model container [2018-06-19 23:39:09,378 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.06 11:39:09" (3/3) ... [2018-06-19 23:39:09,381 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-19 23:39:09,391 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-19 23:39:09,400 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-19 23:39:09,453 INFO ]: Using default assertion order modulation [2018-06-19 23:39:09,453 INFO ]: Interprodecural is true [2018-06-19 23:39:09,453 INFO ]: Hoare is false [2018-06-19 23:39:09,453 INFO ]: Compute interpolants for FPandBP [2018-06-19 23:39:09,453 INFO ]: Backedges is TWOTRACK [2018-06-19 23:39:09,453 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-19 23:39:09,453 INFO ]: Difference is false [2018-06-19 23:39:09,453 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-19 23:39:09,453 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-19 23:39:09,467 INFO ]: Start isEmpty. Operand 13 states. [2018-06-19 23:39:09,477 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-19 23:39:09,477 INFO ]: Found error trace [2018-06-19 23:39:09,478 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-19 23:39:09,478 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-19 23:39:09,483 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-19 23:39:09,485 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-19 23:39:09,485 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-19 23:39:09,518 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 23:39:09,518 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-19 23:39:09,518 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 23:39:09,582 INFO ]: Conjunction of SSA is unsat [2018-06-19 23:39:09,892 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-19 23:39:09,894 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-19 23:39:09,895 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-19 23:39:09,897 INFO ]: Interpolant automaton has 4 states [2018-06-19 23:39:09,907 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-19 23:39:09,908 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-19 23:39:09,910 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-19 23:39:10,049 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-19 23:39:10,049 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-19 23:39:10,051 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-19 23:39:10,053 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-19 23:39:10,053 INFO ]: Finished accepts. some prefix is accepted. [2018-06-19 23:39:10,067 INFO ]: With dead ends: 13 [2018-06-19 23:39:10,067 INFO ]: Without dead ends: 13 [2018-06-19 23:39:10,072 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-19 23:39:10,090 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-19 23:39:10,125 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-19 23:39:10,126 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-19 23:39:10,129 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-19 23:39:10,130 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-19 23:39:10,130 INFO ]: Finished accepts. word is rejected. [2018-06-19 23:39:10,130 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-19 23:39:10,130 INFO ]: Interpolant automaton has 4 states. [2018-06-19 23:39:10,130 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-19 23:39:10,133 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-19 23:39:10,133 INFO ]: Found error trace [2018-06-19 23:39:10,133 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-19 23:39:10,133 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-19 23:39:10,133 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-19 23:39:10,133 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-19 23:39:10,133 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-19 23:39:10,135 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 23:39:10,135 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-19 23:39:10,135 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 23:39:10,338 INFO ]: Conjunction of SSA is unsat [2018-06-19 23:39:10,901 WARN ]: Spent 316.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 28 [2018-06-19 23:39:11,119 WARN ]: Spent 112.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-06-19 23:39:11,121 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-19 23:39:11,121 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-19 23:39:11,121 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 [2018-06-19 23:39:11,129 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-19 23:39:11,243 INFO ]: Conjunction of SSA is unsat [2018-06-19 23:39:11,255 INFO ]: Computing forward predicates... [2018-06-19 23:39:13,124 WARN ]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-06-19 23:39:13,344 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-19 23:39:13,379 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-19 23:39:13,379 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-19 23:39:13,380 INFO ]: Interpolant automaton has 9 states [2018-06-19 23:39:13,380 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-19 23:39:13,380 INFO ]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-06-19 23:39:13,380 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-19 23:39:13,637 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-19 23:39:13,637 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-19 23:39:13,638 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-19 23:39:13,638 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-19 23:39:13,638 INFO ]: Finished accepts. some prefix is accepted. [2018-06-19 23:39:13,638 INFO ]: With dead ends: 15 [2018-06-19 23:39:13,638 INFO ]: Without dead ends: 15 [2018-06-19 23:39:13,639 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-06-19 23:39:13,639 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-19 23:39:13,642 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-19 23:39:13,642 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-19 23:39:13,642 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-19 23:39:13,643 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-19 23:39:13,643 INFO ]: Finished accepts. word is rejected. [2018-06-19 23:39:13,643 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-19 23:39:13,643 INFO ]: Interpolant automaton has 9 states. [2018-06-19 23:39:13,643 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-19 23:39:13,643 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-19 23:39:13,643 INFO ]: Found error trace [2018-06-19 23:39:13,643 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-19 23:39:13,643 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-19 23:39:13,643 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-19 23:39:13,643 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-19 23:39:13,643 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-19 23:39:13,644 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 23:39:13,644 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-19 23:39:13,644 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 23:39:13,829 INFO ]: Conjunction of SSA is unsat [2018-06-19 23:39:14,516 WARN ]: Spent 262.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 54 [2018-06-19 23:39:14,605 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-19 23:39:14,606 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-19 23:39:14,606 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 [2018-06-19 23:39:14,620 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-19 23:39:14,724 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-19 23:39:14,724 INFO ]: Conjunction of SSA is unsat [2018-06-19 23:39:14,733 INFO ]: Computing forward predicates... [2018-06-19 23:41:29,531 WARN ]: expecting exponential blowup for input size 8 Received shutdown request... [2018-06-19 23:42:42,319 INFO ]: Timeout while computing interpolants [2018-06-19 23:42:42,520 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-19 23:42:42,520 WARN ]: Verification canceled [2018-06-19 23:42:42,524 WARN ]: Timeout [2018-06-19 23:42:42,524 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.06 11:42:42 BoogieIcfgContainer [2018-06-19 23:42:42,524 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-19 23:42:42,525 INFO ]: Toolchain (without parser) took 213851.36 ms. Allocated memory was 308.8 MB in the beginning and 7.1 GB in the end (delta: 6.8 GB). Free memory was 250.2 MB in the beginning and 2.5 GB in the end (delta: -2.3 GB). Peak memory consumption was 7.6 GB. Max. memory is 7.1 GB. [2018-06-19 23:42:42,526 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2018-06-19 23:42:42,526 INFO ]: ChcToBoogie took 117.77 ms. Allocated memory is still 308.8 MB. Free memory was 250.2 MB in the beginning and 242.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 7.1 GB. [2018-06-19 23:42:42,527 INFO ]: Boogie Preprocessor took 79.35 ms. Allocated memory is still 308.8 MB. Free memory was 242.3 MB in the beginning and 240.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2018-06-19 23:42:42,528 INFO ]: RCFGBuilder took 494.26 ms. Allocated memory is still 308.8 MB. Free memory was 240.3 MB in the beginning and 217.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2018-06-19 23:42:42,528 INFO ]: TraceAbstraction took 213151.58 ms. Allocated memory was 308.8 MB in the beginning and 7.1 GB in the end (delta: 6.8 GB). Free memory was 217.2 MB in the beginning and 2.5 GB in the end (delta: -2.3 GB). Peak memory consumption was 7.6 GB. Max. memory is 7.1 GB. [2018-06-19 23:42:42,532 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 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * ChcToBoogie took 117.77 ms. Allocated memory is still 308.8 MB. Free memory was 250.2 MB in the beginning and 242.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 79.35 ms. Allocated memory is still 308.8 MB. Free memory was 242.3 MB in the beginning and 240.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 494.26 ms. Allocated memory is still 308.8 MB. Free memory was 240.3 MB in the beginning and 217.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213151.58 ms. Allocated memory was 308.8 MB in the beginning and 7.1 GB in the end (delta: 6.8 GB). Free memory was 217.2 MB in the beginning and 2.5 GB in the end (delta: -2.3 GB). Peak memory consumption was 7.6 GB. Max. memory is 7.1 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 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was transforming 8 conjuction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 213.0s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 4 SDslu, 47 SDs, 0 SdLazy, 31 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 3616 SizeOfPredicates, 45 NumberOfNonLiveVariables, 352 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 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/chc-lra-0022.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-19_23-42-42-552.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/chc-lra-0022.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-19_23-42-42-552.csv Completed graceful shutdown