java -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf -i /storage/chc-comp18-benchmarks/lia/chc-lia-0061.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-f5d4fca [2018-06-19 16:10:19,028 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-19 16:10:19,031 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-19 16:10:19,046 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-19 16:10:19,047 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-19 16:10:19,048 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-19 16:10:19,049 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-19 16:10:19,052 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-19 16:10:19,054 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-19 16:10:19,056 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-19 16:10:19,057 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-19 16:10:19,057 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-19 16:10:19,058 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-19 16:10:19,061 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-19 16:10:19,062 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-19 16:10:19,063 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-19 16:10:19,072 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-19 16:10:19,074 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-19 16:10:19,076 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-19 16:10:19,077 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-19 16:10:19,078 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-19 16:10:19,082 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-19 16:10:19,082 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-19 16:10:19,082 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-19 16:10:19,083 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-19 16:10:19,087 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-19 16:10:19,088 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-19 16:10:19,088 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-19 16:10:19,089 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-19 16:10:19,090 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-19 16:10:19,090 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-19 16:10:19,094 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-19 16:10:19,094 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-19 16:10:19,095 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-19 16:10:19,096 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-19 16:10:19,096 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-19 16:10:19,126 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-19 16:10:19,126 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-19 16:10:19,127 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-19 16:10:19,127 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-19 16:10:19,128 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-19 16:10:19,128 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-19 16:10:19,128 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-19 16:10:19,133 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-19 16:10:19,133 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-19 16:10:19,133 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-19 16:10:19,133 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-19 16:10:19,134 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-19 16:10:19,134 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-19 16:10:19,134 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-19 16:10:19,134 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-19 16:10:19,134 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-19 16:10:19,134 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-19 16:10:19,136 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-19 16:10:19,136 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-19 16:10:19,185 INFO ]: Repository-Root is: /tmp [2018-06-19 16:10:19,199 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-19 16:10:19,205 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-19 16:10:19,206 INFO ]: Initializing SmtParser... [2018-06-19 16:10:19,206 INFO ]: SmtParser initialized [2018-06-19 16:10:19,207 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp18-benchmarks/lia/chc-lia-0061.smt2 [2018-06-19 16:10:19,208 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 16:10:19,303 INFO ]: Executing SMT file /storage/chc-comp18-benchmarks/lia/chc-lia-0061.smt2 unknown [2018-06-19 16:10:19,460 INFO ]: Succesfully executed SMT file /storage/chc-comp18-benchmarks/lia/chc-lia-0061.smt2 [2018-06-19 16:10:19,465 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-19 16:10:19,472 INFO ]: Walking toolchain with 4 elements. [2018-06-19 16:10:19,472 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-19 16:10:19,472 INFO ]: Initializing ChcToBoogie... [2018-06-19 16:10:19,472 INFO ]: ChcToBoogie initialized [2018-06-19 16:10:19,476 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 19.06 04:10:19" (1/1) ... [2018-06-19 16:10:19,568 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 04:10:19 Unit [2018-06-19 16:10:19,568 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-19 16:10:19,569 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-19 16:10:19,569 INFO ]: Initializing Boogie Preprocessor... [2018-06-19 16:10:19,569 INFO ]: Boogie Preprocessor initialized [2018-06-19 16:10:19,591 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 04:10:19" (1/1) ... [2018-06-19 16:10:19,591 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 04:10:19" (1/1) ... [2018-06-19 16:10:19,599 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 04:10:19" (1/1) ... [2018-06-19 16:10:19,599 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 04:10:19" (1/1) ... [2018-06-19 16:10:19,604 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 04:10:19" (1/1) ... [2018-06-19 16:10:19,619 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 04:10:19" (1/1) ... [2018-06-19 16:10:19,620 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 04:10:19" (1/1) ... [2018-06-19 16:10:19,622 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-19 16:10:19,623 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-19 16:10:19,623 INFO ]: Initializing RCFGBuilder... [2018-06-19 16:10:19,623 INFO ]: RCFGBuilder initialized [2018-06-19 16:10:19,624 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 04:10:19" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-19 16:10:19,646 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-19 16:10:19,646 INFO ]: Found specification of procedure gotoProc [2018-06-19 16:10:19,646 INFO ]: Found implementation of procedure gotoProc [2018-06-19 16:10:19,646 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-19 16:10:19,646 INFO ]: Found specification of procedure Ultimate.START [2018-06-19 16:10:19,646 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-19 16:10:19,944 INFO ]: Using library mode [2018-06-19 16:10:19,944 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.06 04:10:19 BoogieIcfgContainer [2018-06-19 16:10:19,945 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-19 16:10:19,946 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-19 16:10:19,946 INFO ]: Initializing TraceAbstraction... [2018-06-19 16:10:19,949 INFO ]: TraceAbstraction initialized [2018-06-19 16:10:19,949 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 19.06 04:10:19" (1/3) ... [2018-06-19 16:10:19,950 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680a3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 19.06 04:10:19, skipping insertion in model container [2018-06-19 16:10:19,950 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 04:10:19" (2/3) ... [2018-06-19 16:10:19,951 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680a3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.06 04:10:19, skipping insertion in model container [2018-06-19 16:10:19,951 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.06 04:10:19" (3/3) ... [2018-06-19 16:10:19,953 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-19 16:10:19,962 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-19 16:10:19,980 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-19 16:10:20,026 INFO ]: Using default assertion order modulation [2018-06-19 16:10:20,027 INFO ]: Interprodecural is true [2018-06-19 16:10:20,027 INFO ]: Hoare is false [2018-06-19 16:10:20,027 INFO ]: Compute interpolants for FPandBP [2018-06-19 16:10:20,027 INFO ]: Backedges is TWOTRACK [2018-06-19 16:10:20,027 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-19 16:10:20,027 INFO ]: Difference is false [2018-06-19 16:10:20,027 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-19 16:10:20,027 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-19 16:10:20,040 INFO ]: Start isEmpty. Operand 11 states. [2018-06-19 16:10:20,050 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-19 16:10:20,050 INFO ]: Found error trace [2018-06-19 16:10:20,051 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-19 16:10:20,051 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-19 16:10:20,055 INFO ]: Analyzing trace with hash 1430470486, now seen corresponding path program 1 times [2018-06-19 16:10:20,056 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-19 16:10:20,057 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-19 16:10:20,090 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 16:10:20,090 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-19 16:10:20,090 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 16:10:20,125 INFO ]: Conjunction of SSA is unsat [2018-06-19 16:10:20,266 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-19 16:10:20,268 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-19 16:10:20,268 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-19 16:10:20,270 INFO ]: Interpolant automaton has 4 states [2018-06-19 16:10:20,281 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-19 16:10:20,282 INFO ]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-19 16:10:20,285 INFO ]: Start difference. First operand 11 states. Second operand 4 states. [2018-06-19 16:10:20,389 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-19 16:10:20,390 INFO ]: Finished difference Result 12 states and 13 transitions. [2018-06-19 16:10:20,390 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-19 16:10:20,392 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-19 16:10:20,392 INFO ]: Finished accepts. some prefix is accepted. [2018-06-19 16:10:20,401 INFO ]: With dead ends: 12 [2018-06-19 16:10:20,401 INFO ]: Without dead ends: 10 [2018-06-19 16:10:20,402 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-19 16:10:20,415 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-19 16:10:20,430 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-19 16:10:20,431 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-19 16:10:20,432 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2018-06-19 16:10:20,433 INFO ]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2018-06-19 16:10:20,433 INFO ]: Finished accepts. word is rejected. [2018-06-19 16:10:20,434 INFO ]: Abstraction has 10 states and 11 transitions. [2018-06-19 16:10:20,434 INFO ]: Interpolant automaton has 4 states. [2018-06-19 16:10:20,434 INFO ]: Start isEmpty. Operand 10 states and 11 transitions. [2018-06-19 16:10:20,434 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-19 16:10:20,434 INFO ]: Found error trace [2018-06-19 16:10:20,434 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-19 16:10:20,434 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-19 16:10:20,434 INFO ]: Analyzing trace with hash 1395740628, now seen corresponding path program 1 times [2018-06-19 16:10:20,434 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-19 16:10:20,434 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-19 16:10:20,435 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 16:10:20,435 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-19 16:10:20,435 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 16:10:20,459 INFO ]: Conjunction of SSA is unsat [2018-06-19 16:10:20,585 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-19 16:10:20,585 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-19 16:10:20,585 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 16:10:20,593 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-19 16:10:20,637 INFO ]: Conjunction of SSA is unsat [2018-06-19 16:10:20,647 INFO ]: Computing forward predicates... [2018-06-19 16:10:20,951 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-19 16:10:20,972 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-19 16:10:20,972 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-19 16:10:20,973 INFO ]: Interpolant automaton has 6 states [2018-06-19 16:10:20,973 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-19 16:10:20,973 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-19 16:10:20,973 INFO ]: Start difference. First operand 10 states and 11 transitions. Second operand 6 states. [2018-06-19 16:10:21,332 WARN ]: Spent 265.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 10 [2018-06-19 16:10:21,494 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-19 16:10:21,494 INFO ]: Finished difference Result 14 states and 15 transitions. [2018-06-19 16:10:21,495 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-19 16:10:21,495 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-19 16:10:21,495 INFO ]: Finished accepts. some prefix is accepted. [2018-06-19 16:10:21,495 INFO ]: With dead ends: 14 [2018-06-19 16:10:21,495 INFO ]: Without dead ends: 12 [2018-06-19 16:10:21,496 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-19 16:10:21,496 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-19 16:10:21,497 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-06-19 16:10:21,497 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-19 16:10:21,498 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-06-19 16:10:21,498 INFO ]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-06-19 16:10:21,498 INFO ]: Finished accepts. word is rejected. [2018-06-19 16:10:21,498 INFO ]: Abstraction has 11 states and 12 transitions. [2018-06-19 16:10:21,498 INFO ]: Interpolant automaton has 6 states. [2018-06-19 16:10:21,498 INFO ]: Start isEmpty. Operand 11 states and 12 transitions. [2018-06-19 16:10:21,498 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-19 16:10:21,498 INFO ]: Found error trace [2018-06-19 16:10:21,498 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-19 16:10:21,498 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-19 16:10:21,499 INFO ]: Analyzing trace with hash 319115030, now seen corresponding path program 2 times [2018-06-19 16:10:21,499 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-19 16:10:21,499 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-19 16:10:21,499 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 16:10:21,500 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-19 16:10:21,500 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 16:10:21,555 INFO ]: Conjunction of SSA is unsat [2018-06-19 16:10:21,744 WARN ]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-19 16:10:21,748 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-19 16:10:21,748 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-19 16:10:21,748 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 16:10:21,754 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-19 16:10:21,767 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-06-19 16:10:21,767 INFO ]: Conjunction of SSA is unsat [2018-06-19 16:10:21,768 INFO ]: Computing forward predicates... [2018-06-19 16:10:21,818 INFO ]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-19 16:10:21,843 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-19 16:10:21,843 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2018-06-19 16:10:21,843 INFO ]: Interpolant automaton has 8 states [2018-06-19 16:10:21,843 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-19 16:10:21,843 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-19 16:10:21,843 INFO ]: Start difference. First operand 11 states and 12 transitions. Second operand 8 states. [2018-06-19 16:10:22,202 WARN ]: Spent 314.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 10 [2018-06-19 16:10:22,454 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-19 16:10:22,454 INFO ]: Finished difference Result 22 states and 23 transitions. [2018-06-19 16:10:22,454 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-19 16:10:22,454 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-19 16:10:22,454 INFO ]: Finished accepts. some prefix is accepted. [2018-06-19 16:10:22,454 INFO ]: With dead ends: 22 [2018-06-19 16:10:22,454 INFO ]: Without dead ends: 12 [2018-06-19 16:10:22,455 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-06-19 16:10:22,455 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-19 16:10:22,456 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-19 16:10:22,456 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-19 16:10:22,457 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-19 16:10:22,457 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-06-19 16:10:22,457 INFO ]: Finished accepts. word is rejected. [2018-06-19 16:10:22,457 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-19 16:10:22,457 INFO ]: Interpolant automaton has 8 states. [2018-06-19 16:10:22,457 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-19 16:10:22,457 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-19 16:10:22,457 INFO ]: Found error trace [2018-06-19 16:10:22,457 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-19 16:10:22,458 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-19 16:10:22,458 INFO ]: Analyzing trace with hash 949203065, now seen corresponding path program 1 times [2018-06-19 16:10:22,458 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-19 16:10:22,458 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-19 16:10:22,459 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 16:10:22,459 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-19 16:10:22,459 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 16:10:22,492 INFO ]: Conjunction of SSA is unsat [2018-06-19 16:10:22,956 WARN ]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-19 16:10:22,957 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-19 16:10:22,975 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-19 16:10:22,975 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 [2018-06-19 16:10:22,984 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-19 16:10:23,026 INFO ]: Conjunction of SSA is unsat [2018-06-19 16:10:23,029 INFO ]: Computing forward predicates... [2018-06-19 16:10:23,609 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-19 16:10:23,632 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-19 16:10:23,632 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-06-19 16:10:23,632 INFO ]: Interpolant automaton has 6 states [2018-06-19 16:10:23,632 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-19 16:10:23,632 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-19 16:10:23,633 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2018-06-19 16:10:23,716 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-19 16:10:23,716 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-19 16:10:23,716 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-19 16:10:23,716 INFO ]: Start accepts. Automaton has 6 states. Word has length 11 [2018-06-19 16:10:23,716 INFO ]: Finished accepts. some prefix is accepted. [2018-06-19 16:10:23,717 INFO ]: With dead ends: 13 [2018-06-19 16:10:23,717 INFO ]: Without dead ends: 13 [2018-06-19 16:10:23,717 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-06-19 16:10:23,717 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-19 16:10:23,718 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-19 16:10:23,718 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-19 16:10:23,719 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-19 16:10:23,719 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-19 16:10:23,720 INFO ]: Finished accepts. word is rejected. [2018-06-19 16:10:23,720 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-19 16:10:23,720 INFO ]: Interpolant automaton has 6 states. [2018-06-19 16:10:23,720 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-19 16:10:23,720 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-19 16:10:23,720 INFO ]: Found error trace [2018-06-19 16:10:23,720 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-19 16:10:23,720 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-19 16:10:23,720 INFO ]: Analyzing trace with hash -638647535, now seen corresponding path program 2 times [2018-06-19 16:10:23,720 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-19 16:10:23,720 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-19 16:10:23,721 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 16:10:23,721 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-19 16:10:23,721 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 16:10:23,747 INFO ]: Conjunction of SSA is unsat [2018-06-19 16:10:23,928 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-19 16:10:23,929 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-19 16:10:23,929 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 [2018-06-19 16:10:23,944 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-19 16:10:23,990 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-19 16:10:23,990 INFO ]: Conjunction of SSA is unsat [2018-06-19 16:10:23,994 INFO ]: Computing forward predicates... [2018-06-19 16:10:25,749 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-19 16:10:25,782 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-19 16:10:25,782 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-06-19 16:10:25,783 INFO ]: Interpolant automaton has 7 states [2018-06-19 16:10:25,783 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-19 16:10:25,783 INFO ]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-06-19 16:10:25,783 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-06-19 16:10:26,382 WARN ]: Spent 521.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 7 [2018-06-19 16:10:26,653 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-19 16:10:26,653 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-19 16:10:26,653 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-19 16:10:26,653 INFO ]: Start accepts. Automaton has 7 states. Word has length 12 [2018-06-19 16:10:26,653 INFO ]: Finished accepts. some prefix is accepted. [2018-06-19 16:10:26,653 INFO ]: With dead ends: 14 [2018-06-19 16:10:26,653 INFO ]: Without dead ends: 14 [2018-06-19 16:10:26,654 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-06-19 16:10:26,654 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-19 16:10:26,655 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-19 16:10:26,655 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-19 16:10:26,655 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-19 16:10:26,655 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-19 16:10:26,656 INFO ]: Finished accepts. word is rejected. [2018-06-19 16:10:26,656 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-19 16:10:26,656 INFO ]: Interpolant automaton has 7 states. [2018-06-19 16:10:26,656 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-19 16:10:26,656 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-19 16:10:26,656 INFO ]: Found error trace [2018-06-19 16:10:26,656 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-19 16:10:26,656 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-19 16:10:26,656 INFO ]: Analyzing trace with hash 1677591417, now seen corresponding path program 3 times [2018-06-19 16:10:26,656 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-19 16:10:26,656 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-19 16:10:26,657 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 16:10:26,657 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-19 16:10:26,657 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 16:10:26,707 INFO ]: Conjunction of SSA is unsat [2018-06-19 16:10:27,473 WARN ]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-06-19 16:10:27,762 WARN ]: Spent 205.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-06-19 16:10:28,021 WARN ]: Spent 114.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-06-19 16:10:28,032 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-19 16:10:28,058 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-19 16:10:28,058 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) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-19 16:10:28,065 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-19 16:10:28,153 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-19 16:10:28,153 INFO ]: Conjunction of SSA is unsat [2018-06-19 16:10:28,157 INFO ]: Computing forward predicates... [2018-06-19 16:10:28,992 WARN ]: expecting exponential blowup for input size 7 [2018-06-19 16:10:32,035 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-19 16:10:32,056 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-19 16:10:32,056 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-06-19 16:10:32,056 INFO ]: Interpolant automaton has 8 states [2018-06-19 16:10:32,056 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-19 16:10:32,056 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-19 16:10:32,056 INFO ]: Start difference. First operand 14 states and 14 transitions. Second operand 8 states. [2018-06-19 16:10:32,220 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2018-06-19 16:10:32,339 WARN ]: Spent 110.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2018-06-19 16:10:32,557 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-19 16:10:32,557 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-19 16:10:32,557 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-19 16:10:32,557 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-19 16:10:32,557 INFO ]: Finished accepts. some prefix is accepted. [2018-06-19 16:10:32,557 INFO ]: With dead ends: 15 [2018-06-19 16:10:32,557 INFO ]: Without dead ends: 15 [2018-06-19 16:10:32,558 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2018-06-19 16:10:32,558 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-19 16:10:32,559 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-19 16:10:32,559 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-19 16:10:32,560 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-19 16:10:32,560 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-06-19 16:10:32,560 INFO ]: Finished accepts. word is rejected. [2018-06-19 16:10:32,560 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-19 16:10:32,560 INFO ]: Interpolant automaton has 8 states. [2018-06-19 16:10:32,560 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-19 16:10:32,560 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-19 16:10:32,560 INFO ]: Found error trace [2018-06-19 16:10:32,560 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-19 16:10:32,560 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-19 16:10:32,561 INFO ]: Analyzing trace with hash 466554897, now seen corresponding path program 4 times [2018-06-19 16:10:32,561 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-19 16:10:32,561 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-19 16:10:32,561 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 16:10:32,561 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-19 16:10:32,561 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 16:10:32,595 INFO ]: Conjunction of SSA is unsat [2018-06-19 16:10:32,908 WARN ]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-19 16:10:33,025 WARN ]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-06-19 16:10:33,176 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-19 16:10:33,176 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-19 16:10:33,176 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 [2018-06-19 16:10:33,190 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-19 16:10:33,232 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-19 16:10:33,232 INFO ]: Conjunction of SSA is unsat [2018-06-19 16:10:33,235 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-19 16:11:27,592 INFO ]: Timeout while computing interpolants [2018-06-19 16:11:27,793 WARN ]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-19 16:11:27,793 WARN ]: Verification canceled [2018-06-19 16:11:27,797 WARN ]: Timeout [2018-06-19 16:11:27,797 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.06 04:11:27 BoogieIcfgContainer [2018-06-19 16:11:27,797 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-19 16:11:27,798 INFO ]: Toolchain (without parser) took 68332.61 ms. Allocated memory was 303.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 258.9 MB in the beginning and 690.8 MB in the end (delta: -431.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-19 16:11:27,799 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 303.6 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-19 16:11:27,800 INFO ]: ChcToBoogie took 96.53 ms. Allocated memory is still 303.6 MB. Free memory was 258.9 MB in the beginning and 255.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-19 16:11:27,800 INFO ]: Boogie Preprocessor took 53.24 ms. Allocated memory is still 303.6 MB. Free memory was 255.9 MB in the beginning and 254.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-19 16:11:27,801 INFO ]: RCFGBuilder took 321.67 ms. Allocated memory is still 303.6 MB. Free memory was 254.9 MB in the beginning and 244.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-19 16:11:27,801 INFO ]: TraceAbstraction took 67851.24 ms. Allocated memory was 303.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 244.9 MB in the beginning and 690.8 MB in the end (delta: -445.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-19 16:11:27,804 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 303.6 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 96.53 ms. Allocated memory is still 303.6 MB. Free memory was 258.9 MB in the beginning and 255.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 53.24 ms. Allocated memory is still 303.6 MB. Free memory was 255.9 MB in the beginning and 254.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 321.67 ms. Allocated memory is still 303.6 MB. Free memory was 254.9 MB in the beginning and 244.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 67851.24 ms. Allocated memory was 303.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 244.9 MB in the beginning and 690.8 MB in the end (delta: -445.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 15 with TraceHistMax 6, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 16196 quantified variables from 10 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 11 locations, 1 error locations. TIMEOUT Result, 67.7s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 2.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 23 SDslu, 107 SDs, 0 SdLazy, 87 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 46 SyntacticMatches, 11 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 113 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 5025 SizeOfPredicates, 17 NumberOfNonLiveVariables, 611 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 3/70 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-lia-0061.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-19_16-11-27-815.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/chc-lia-0061.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-19_16-11-27-815.csv Completed graceful shutdown