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_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_3_e2_2236_e7_3681.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 17:39:33,324 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 17:39:33,343 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 17:39:33,354 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 17:39:33,354 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 17:39:33,355 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 17:39:33,356 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 17:39:33,358 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 17:39:33,359 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 17:39:33,360 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 17:39:33,361 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 17:39:33,362 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 17:39:33,362 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 17:39:33,363 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 17:39:33,364 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 17:39:33,365 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 17:39:33,366 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 17:39:33,368 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 17:39:33,369 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 17:39:33,370 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 17:39:33,371 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 17:39:33,374 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 17:39:33,374 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 17:39:33,374 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 17:39:33,375 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 17:39:33,376 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 17:39:33,376 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 17:39:33,377 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 17:39:33,378 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 17:39:33,379 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 17:39:33,379 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 17:39:33,380 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 17:39:33,380 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 17:39:33,381 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 17:39:33,382 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 17:39:33,382 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 17:39:33,413 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 17:39:33,414 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 17:39:33,414 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 17:39:33,414 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 17:39:33,415 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 17:39:33,415 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 17:39:33,416 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 17:39:33,416 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 17:39:33,416 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 17:39:33,416 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 17:39:33,416 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 17:39:33,417 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 17:39:33,417 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 17:39:33,417 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 17:39:33,417 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 17:39:33,417 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 17:39:33,418 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 17:39:33,418 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 17:39:33,418 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 17:39:33,419 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 17:39:33,419 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 17:39:33,502 INFO ]: Repository-Root is: /tmp [2018-06-22 17:39:33,536 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 17:39:33,539 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 17:39:33,540 INFO ]: Initializing SmtParser... [2018-06-22 17:39:33,540 INFO ]: SmtParser initialized [2018-06-22 17:39:33,552 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_3_e2_2236_e7_3681.smt2 [2018-06-22 17:39:33,574 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 17:39:33,811 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_3_e2_2236_e7_3681.smt2 unknown [2018-06-22 17:39:34,675 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_3_e2_2236_e7_3681.smt2 [2018-06-22 17:39:34,679 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 17:39:34,686 INFO ]: Walking toolchain with 4 elements. [2018-06-22 17:39:34,686 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 17:39:34,686 INFO ]: Initializing ChcToBoogie... [2018-06-22 17:39:34,687 INFO ]: ChcToBoogie initialized [2018-06-22 17:39:34,739 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:39:34" (1/1) ... [2018-06-22 17:39:34,813 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:39:34 Unit [2018-06-22 17:39:34,813 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 17:39:34,814 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 17:39:34,814 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 17:39:34,814 INFO ]: Boogie Preprocessor initialized [2018-06-22 17:39:34,842 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:39:34" (1/1) ... [2018-06-22 17:39:34,843 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:39:34" (1/1) ... [2018-06-22 17:39:34,855 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:39:34" (1/1) ... [2018-06-22 17:39:34,855 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:39:34" (1/1) ... [2018-06-22 17:39:34,875 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:39:34" (1/1) ... [2018-06-22 17:39:34,876 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:39:34" (1/1) ... [2018-06-22 17:39:34,888 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:39:34" (1/1) ... [2018-06-22 17:39:34,892 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 17:39:34,897 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 17:39:34,897 INFO ]: Initializing RCFGBuilder... [2018-06-22 17:39:34,897 INFO ]: RCFGBuilder initialized [2018-06-22 17:39:34,898 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:39:34" (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) [2018-06-22 17:39:34,917 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 17:39:34,917 INFO ]: Found specification of procedure False [2018-06-22 17:39:34,917 INFO ]: Found implementation of procedure False [2018-06-22 17:39:34,917 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 17:39:34,918 INFO ]: Found specification of procedure state [2018-06-22 17:39:34,918 INFO ]: Found implementation of procedure state [2018-06-22 17:39:34,918 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 17:39:34,918 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 17:39:34,918 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 [2018-06-22 17:39:35,575 INFO ]: Using library mode [2018-06-22 17:39:35,577 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:39:35 BoogieIcfgContainer [2018-06-22 17:39:35,577 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 17:39:35,579 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 17:39:35,579 INFO ]: Initializing TraceAbstraction... [2018-06-22 17:39:35,598 INFO ]: TraceAbstraction initialized [2018-06-22 17:39:35,598 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:39:34" (1/3) ... [2018-06-22 17:39:35,599 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590d437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:39:35, skipping insertion in model container [2018-06-22 17:39:35,599 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:39:34" (2/3) ... [2018-06-22 17:39:35,599 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590d437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:39:35, skipping insertion in model container [2018-06-22 17:39:35,599 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:39:35" (3/3) ... [2018-06-22 17:39:35,602 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 17:39:35,630 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 17:39:35,661 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 17:39:35,827 INFO ]: Using default assertion order modulation [2018-06-22 17:39:35,827 INFO ]: Interprodecural is true [2018-06-22 17:39:35,827 INFO ]: Hoare is false [2018-06-22 17:39:35,827 INFO ]: Compute interpolants for FPandBP [2018-06-22 17:39:35,827 INFO ]: Backedges is TWOTRACK [2018-06-22 17:39:35,827 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 17:39:35,827 INFO ]: Difference is false [2018-06-22 17:39:35,827 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 17:39:35,827 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 17:39:35,871 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 17:39:35,881 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 17:39:35,881 INFO ]: Found error trace [2018-06-22 17:39:35,882 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:39:35,882 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:39:35,892 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 17:39:35,911 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:39:35,911 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:39:35,965 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:39:35,965 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:39:35,965 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:39:36,090 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:39:36,367 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 17:39:36,369 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 17:39:36,369 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 17:39:36,371 INFO ]: Interpolant automaton has 4 states [2018-06-22 17:39:36,387 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 17:39:36,387 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 17:39:36,412 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 17:39:36,617 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:39:36,618 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 17:39:36,619 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 17:39:36,635 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 17:39:36,636 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:39:36,666 INFO ]: With dead ends: 13 [2018-06-22 17:39:36,666 INFO ]: Without dead ends: 13 [2018-06-22 17:39:36,668 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 17:39:36,720 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 17:39:36,755 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 17:39:36,756 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 17:39:36,756 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 17:39:36,758 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 17:39:36,758 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:39:36,758 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 17:39:36,758 INFO ]: Interpolant automaton has 4 states. [2018-06-22 17:39:36,758 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 17:39:36,760 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 17:39:36,760 INFO ]: Found error trace [2018-06-22 17:39:36,760 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:39:36,760 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:39:36,760 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 17:39:36,761 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:39:36,761 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:39:36,761 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:39:36,761 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:39:36,761 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:39:36,921 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:39:37,786 WARN ]: Spent 561.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2018-06-22 17:39:37,837 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 17:39:37,837 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:39:37,837 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 17:39:37,847 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:39:37,993 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:39:38,067 INFO ]: Computing forward predicates... [2018-06-22 17:39:39,452 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 17:39:39,506 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 17:39:39,681 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:39:39,688 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:39:39,866 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:39:40,070 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:39:40,311 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:39:40,322 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 17:39:40,846 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 17:39:52,573 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 17:39:52,609 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 17:39:52,609 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 17:39:52,610 INFO ]: Interpolant automaton has 7 states [2018-06-22 17:39:52,610 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 17:39:52,610 INFO ]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-22 17:39:52,610 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-06-22 17:39:52,839 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:39:52,840 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 17:39:52,840 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 17:39:52,840 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-22 17:39:52,840 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:39:52,841 INFO ]: With dead ends: 15 [2018-06-22 17:39:52,841 INFO ]: Without dead ends: 15 [2018-06-22 17:39:52,841 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-06-22 17:39:52,841 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 17:39:52,843 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 17:39:52,843 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 17:39:52,843 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 17:39:52,844 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 17:39:52,844 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:39:52,844 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 17:39:52,844 INFO ]: Interpolant automaton has 7 states. [2018-06-22 17:39:52,844 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 17:39:52,844 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 17:39:52,844 INFO ]: Found error trace [2018-06-22 17:39:52,844 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:39:52,844 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:39:52,845 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 17:39:52,845 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:39:52,845 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:39:52,845 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:39:52,845 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:39:52,845 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:39:52,957 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:39:53,397 WARN ]: Spent 202.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2018-06-22 17:39:53,886 WARN ]: Spent 474.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 73 [2018-06-22 17:39:54,097 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 12 [2018-06-22 17:39:54,144 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 17:39:54,144 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:39:54,144 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) [2018-06-22 17:39:54,162 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 17:39:54,311 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 17:39:54,312 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:39:54,319 INFO ]: Computing forward predicates... [2018-06-22 17:39:55,246 WARN ]: expecting exponential blowup for input size 22 Received shutdown request... [2018-06-22 17:40:30,456 INFO ]: Timeout while computing interpolants [2018-06-22 17:40:30,656 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 17:40:30,657 WARN ]: Verification canceled [2018-06-22 17:40:30,661 WARN ]: Timeout [2018-06-22 17:40:30,661 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:40:30 BoogieIcfgContainer [2018-06-22 17:40:30,661 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 17:40:30,662 INFO ]: Toolchain (without parser) took 55981.97 ms. Allocated memory was 304.6 MB in the beginning and 2.9 GB in the end (delta: 2.6 GB). Free memory was 236.9 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.8 GB. Max. memory is 3.6 GB. [2018-06-22 17:40:30,663 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 304.6 MB. Free memory is still 269.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 17:40:30,663 INFO ]: ChcToBoogie took 127.09 ms. Allocated memory is still 304.6 MB. Free memory was 236.9 MB in the beginning and 234.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:40:30,663 INFO ]: Boogie Preprocessor took 78.28 ms. Allocated memory is still 304.6 MB. Free memory was 234.9 MB in the beginning and 232.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:40:30,664 INFO ]: RCFGBuilder took 679.58 ms. Allocated memory is still 304.6 MB. Free memory was 232.9 MB in the beginning and 203.0 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:40:30,664 INFO ]: TraceAbstraction took 55082.11 ms. Allocated memory was 304.6 MB in the beginning and 2.9 GB in the end (delta: 2.6 GB). Free memory was 203.0 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.8 GB. Max. memory is 3.6 GB. [2018-06-22 17:40:30,679 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 304.6 MB. Free memory is still 269.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 127.09 ms. Allocated memory is still 304.6 MB. Free memory was 236.9 MB in the beginning and 234.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 78.28 ms. Allocated memory is still 304.6 MB. Free memory was 234.9 MB in the beginning and 232.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 679.58 ms. Allocated memory is still 304.6 MB. Free memory was 232.9 MB in the beginning and 203.0 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 55082.11 ms. Allocated memory was 304.6 MB in the beginning and 2.9 GB in the end (delta: 2.6 GB). Free memory was 203.0 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.8 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was transforming 22 conjuction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 54.8s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 8 SDslu, 39 SDs, 0 SdLazy, 23 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.1s 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, 15.7s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 32 NumberOfNonLiveVariables, 554 ConjunctsInSsa, 44 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/FIREFLY_3_e2_2236_e7_3681.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_17-40-30-688.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/FIREFLY_3_e2_2236_e7_3681.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_17-40-30-688.csv Completed graceful shutdown