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-comp/vmt-chc-benchmarks/lustre/car_4_e3_57_e4_1047.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 13:54:49,558 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 13:54:49,560 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 13:54:49,601 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 13:54:49,601 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 13:54:49,602 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 13:54:49,604 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 13:54:49,611 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 13:54:49,613 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 13:54:49,616 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 13:54:49,617 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 13:54:49,617 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 13:54:49,618 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 13:54:49,630 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 13:54:49,630 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 13:54:49,631 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 13:54:49,644 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 13:54:49,651 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 13:54:49,656 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 13:54:49,657 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 13:54:49,658 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 13:54:49,668 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 13:54:49,669 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 13:54:49,669 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 13:54:49,680 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 13:54:49,681 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 13:54:49,682 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 13:54:49,683 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 13:54:49,688 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 13:54:49,688 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 13:54:49,689 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 13:54:49,690 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 13:54:49,690 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 13:54:49,696 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 13:54:49,697 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 13:54:49,698 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 13:54:49,721 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 13:54:49,721 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 13:54:49,722 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 13:54:49,722 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 13:54:49,723 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 13:54:49,727 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 13:54:49,727 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 13:54:49,727 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 13:54:49,727 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 13:54:49,728 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 13:54:49,728 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 13:54:49,728 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 13:54:49,728 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 13:54:49,728 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 13:54:49,729 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 13:54:49,729 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 13:54:49,729 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 13:54:49,732 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 13:54:49,732 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 13:54:49,790 INFO ]: Repository-Root is: /tmp [2018-06-18 13:54:49,808 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 13:54:49,814 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 13:54:49,816 INFO ]: Initializing SmtParser... [2018-06-18 13:54:49,816 INFO ]: SmtParser initialized [2018-06-18 13:54:49,817 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_4_e3_57_e4_1047.smt2 [2018-06-18 13:54:49,818 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 [2018-06-18 13:54:49,914 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_4_e3_57_e4_1047.smt2 unknown [2018-06-18 13:54:50,222 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_4_e3_57_e4_1047.smt2 [2018-06-18 13:54:50,236 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 13:54:50,243 INFO ]: Walking toolchain with 4 elements. [2018-06-18 13:54:50,243 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 13:54:50,243 INFO ]: Initializing ChcToBoogie... [2018-06-18 13:54:50,243 INFO ]: ChcToBoogie initialized [2018-06-18 13:54:50,251 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 01:54:50" (1/1) ... [2018-06-18 13:54:50,394 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:50 Unit [2018-06-18 13:54:50,395 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 13:54:50,395 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 13:54:50,395 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 13:54:50,395 INFO ]: Boogie Preprocessor initialized [2018-06-18 13:54:50,461 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:50" (1/1) ... [2018-06-18 13:54:50,461 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:50" (1/1) ... [2018-06-18 13:54:50,481 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:50" (1/1) ... [2018-06-18 13:54:50,481 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:50" (1/1) ... [2018-06-18 13:54:50,503 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:50" (1/1) ... [2018-06-18 13:54:50,504 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:50" (1/1) ... [2018-06-18 13:54:50,514 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:50" (1/1) ... [2018-06-18 13:54:50,516 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 13:54:50,517 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 13:54:50,517 INFO ]: Initializing RCFGBuilder... [2018-06-18 13:54:50,517 INFO ]: RCFGBuilder initialized [2018-06-18 13:54:50,528 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:50" (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) [2018-06-18 13:54:50,583 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 13:54:50,583 INFO ]: Found specification of procedure False [2018-06-18 13:54:50,583 INFO ]: Found implementation of procedure False [2018-06-18 13:54:50,583 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 13:54:50,583 INFO ]: Found specification of procedure state [2018-06-18 13:54:50,583 INFO ]: Found implementation of procedure state [2018-06-18 13:54:50,583 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 13:54:50,583 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 13:54:50,583 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 [2018-06-18 13:54:51,114 INFO ]: Using library mode [2018-06-18 13:54:51,115 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 01:54:51 BoogieIcfgContainer [2018-06-18 13:54:51,115 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 13:54:51,116 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 13:54:51,116 INFO ]: Initializing TraceAbstraction... [2018-06-18 13:54:51,119 INFO ]: TraceAbstraction initialized [2018-06-18 13:54:51,120 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 01:54:50" (1/3) ... [2018-06-18 13:54:51,120 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7492d1ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 01:54:51, skipping insertion in model container [2018-06-18 13:54:51,121 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:50" (2/3) ... [2018-06-18 13:54:51,121 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7492d1ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 01:54:51, skipping insertion in model container [2018-06-18 13:54:51,121 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 01:54:51" (3/3) ... [2018-06-18 13:54:51,123 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 13:54:51,133 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 13:54:51,141 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 13:54:51,200 INFO ]: Using default assertion order modulation [2018-06-18 13:54:51,201 INFO ]: Interprodecural is true [2018-06-18 13:54:51,201 INFO ]: Hoare is false [2018-06-18 13:54:51,201 INFO ]: Compute interpolants for FPandBP [2018-06-18 13:54:51,201 INFO ]: Backedges is TWOTRACK [2018-06-18 13:54:51,201 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 13:54:51,201 INFO ]: Difference is false [2018-06-18 13:54:51,201 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 13:54:51,201 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 13:54:51,227 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 13:54:51,251 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 13:54:51,251 INFO ]: Found error trace [2018-06-18 13:54:51,252 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:54:51,252 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:54:51,258 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 13:54:51,261 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:54:51,261 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:54:51,316 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:54:51,317 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:54:51,317 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:54:51,492 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:54:51,514 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:54:51,759 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 13:54:51,761 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 13:54:51,761 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 13:54:51,763 INFO ]: Interpolant automaton has 4 states [2018-06-18 13:54:51,774 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 13:54:51,774 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 13:54:51,777 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 13:54:51,901 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:54:51,901 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 13:54:51,902 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 13:54:51,903 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 13:54:51,903 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:54:51,916 INFO ]: With dead ends: 13 [2018-06-18 13:54:51,917 INFO ]: Without dead ends: 13 [2018-06-18 13:54:51,922 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 13:54:51,937 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 13:54:51,974 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 13:54:51,976 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 13:54:51,976 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 13:54:51,979 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 13:54:51,979 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:54:51,979 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 13:54:51,980 INFO ]: Interpolant automaton has 4 states. [2018-06-18 13:54:51,980 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 13:54:51,981 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 13:54:51,981 INFO ]: Found error trace [2018-06-18 13:54:51,981 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:54:51,982 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:54:51,982 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 13:54:51,982 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:54:51,982 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:54:51,983 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:54:51,983 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:54:51,983 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:54:52,086 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:54:52,087 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:54:52,750 WARN ]: Spent 399.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2018-06-18 13:54:53,224 WARN ]: Spent 191.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-06-18 13:54:53,226 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 13:54:53,226 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:54:53,226 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-18 13:54:53,244 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:54:53,388 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:54:53,399 INFO ]: Computing forward predicates... [2018-06-18 13:54:53,637 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 13:54:53,675 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:54:53,675 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-18 13:54:53,675 INFO ]: Interpolant automaton has 8 states [2018-06-18 13:54:53,675 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-18 13:54:53,676 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-18 13:54:53,676 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-18 13:54:54,013 WARN ]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-06-18 13:54:54,526 WARN ]: Spent 399.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2018-06-18 13:54:54,696 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:54:54,721 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 13:54:54,721 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 13:54:54,721 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-18 13:54:54,722 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:54:54,722 INFO ]: With dead ends: 15 [2018-06-18 13:54:54,722 INFO ]: Without dead ends: 15 [2018-06-18 13:54:54,723 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-06-18 13:54:54,723 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 13:54:54,726 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 13:54:54,726 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 13:54:54,727 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 13:54:54,727 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 13:54:54,727 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:54:54,727 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 13:54:54,727 INFO ]: Interpolant automaton has 8 states. [2018-06-18 13:54:54,727 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 13:54:54,727 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 13:54:54,728 INFO ]: Found error trace [2018-06-18 13:54:54,728 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:54:54,728 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:54:54,728 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 13:54:54,728 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:54:54,728 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:54:54,729 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:54:54,729 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:54:54,729 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:54:54,826 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:54:54,827 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:54:55,380 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 13:54:55,380 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:54:55,380 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 [2018-06-18 13:54:55,390 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 13:54:55,485 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 13:54:55,485 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:54:55,490 INFO ]: Computing forward predicates... [2018-06-18 13:54:55,936 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 14 [2018-06-18 13:54:56,023 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 13:54:56,052 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:54:56,052 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-18 13:54:56,053 INFO ]: Interpolant automaton has 12 states [2018-06-18 13:54:56,053 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-18 13:54:56,053 INFO ]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-06-18 13:54:56,053 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-18 13:54:56,385 WARN ]: Spent 242.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 16 [2018-06-18 13:54:56,610 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2018-06-18 13:54:56,622 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:54:56,622 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-18 13:54:56,622 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 13:54:56,622 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-18 13:54:56,622 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:54:56,622 INFO ]: With dead ends: 11 [2018-06-18 13:54:56,623 INFO ]: Without dead ends: 0 [2018-06-18 13:54:56,623 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-06-18 13:54:56,623 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-18 13:54:56,623 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-18 13:54:56,623 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-18 13:54:56,623 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-18 13:54:56,623 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-18 13:54:56,623 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:54:56,623 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-18 13:54:56,623 INFO ]: Interpolant automaton has 12 states. [2018-06-18 13:54:56,624 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-18 13:54:56,624 INFO ]: Finished isEmpty. No accepting run. [2018-06-18 13:54:56,629 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 01:54:56 BoogieIcfgContainer [2018-06-18 13:54:56,629 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 13:54:56,630 INFO ]: Toolchain (without parser) took 6393.71 ms. Allocated memory is still 317.2 MB. Free memory was 265.6 MB in the beginning and 240.1 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 3.6 GB. [2018-06-18 13:54:56,631 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 317.2 MB. Free memory is still 281.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 13:54:56,632 INFO ]: ChcToBoogie took 151.91 ms. Allocated memory is still 317.2 MB. Free memory was 265.6 MB in the beginning and 261.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-18 13:54:56,632 INFO ]: Boogie Preprocessor took 121.19 ms. Allocated memory is still 317.2 MB. Free memory is still 261.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 13:54:56,632 INFO ]: RCFGBuilder took 597.83 ms. Allocated memory is still 317.2 MB. Free memory was 261.6 MB in the beginning and 245.6 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-18 13:54:56,633 INFO ]: TraceAbstraction took 5513.20 ms. Allocated memory is still 317.2 MB. Free memory was 245.6 MB in the beginning and 240.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 3.6 GB. [2018-06-18 13:54:56,636 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 317.2 MB. Free memory is still 281.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 151.91 ms. Allocated memory is still 317.2 MB. Free memory was 265.6 MB in the beginning and 261.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 121.19 ms. Allocated memory is still 317.2 MB. Free memory is still 261.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 597.83 ms. Allocated memory is still 317.2 MB. Free memory was 261.6 MB in the beginning and 245.6 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5513.20 ms. Allocated memory is still 317.2 MB. Free memory was 245.6 MB in the beginning and 240.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. SAFE Result, 5.4s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 12 SDslu, 64 SDs, 0 SdLazy, 56 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.9s 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 3152 SizeOfPredicates, 41 NumberOfNonLiveVariables, 586 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/26 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_4_e3_57_e4_1047.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_13-54-56-646.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_4_e3_57_e4_1047.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_13-54-56-646.csv Received shutdown request...