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/car_4_e3_57_e6_784.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 15:53:47,941 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 15:53:47,943 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 15:53:47,960 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 15:53:47,961 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 15:53:47,961 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 15:53:47,963 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 15:53:47,965 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 15:53:47,967 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 15:53:47,967 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 15:53:47,970 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 15:53:47,970 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 15:53:47,971 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 15:53:47,974 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 15:53:47,975 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 15:53:47,976 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 15:53:47,978 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 15:53:47,980 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 15:53:47,982 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 15:53:47,983 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 15:53:47,984 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 15:53:47,986 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 15:53:47,986 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 15:53:47,987 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 15:53:47,987 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 15:53:47,988 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 15:53:47,989 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 15:53:47,990 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 15:53:47,991 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 15:53:47,991 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 15:53:47,992 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 15:53:47,992 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 15:53:47,993 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 15:53:47,994 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 15:53:47,994 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 15:53:47,995 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 15:53:48,008 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 15:53:48,008 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 15:53:48,008 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 15:53:48,008 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 15:53:48,010 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 15:53:48,010 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 15:53:48,010 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 15:53:48,011 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 15:53:48,011 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 15:53:48,011 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 15:53:48,011 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:53:48,011 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 15:53:48,011 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 15:53:48,012 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 15:53:48,012 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 15:53:48,012 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 15:53:48,012 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 15:53:48,012 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 15:53:48,013 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 15:53:48,014 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 15:53:48,014 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 15:53:48,054 INFO ]: Repository-Root is: /tmp [2018-06-22 15:53:48,072 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 15:53:48,078 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 15:53:48,080 INFO ]: Initializing SmtParser... [2018-06-22 15:53:48,080 INFO ]: SmtParser initialized [2018-06-22 15:53:48,081 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_4_e3_57_e6_784.smt2 [2018-06-22 15:53:48,082 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 15:53:48,174 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_4_e3_57_e6_784.smt2 unknown [2018-06-22 15:53:48,495 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_4_e3_57_e6_784.smt2 [2018-06-22 15:53:48,500 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 15:53:48,505 INFO ]: Walking toolchain with 4 elements. [2018-06-22 15:53:48,506 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 15:53:48,506 INFO ]: Initializing ChcToBoogie... [2018-06-22 15:53:48,506 INFO ]: ChcToBoogie initialized [2018-06-22 15:53:48,509 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:53:48" (1/1) ... [2018-06-22 15:53:48,558 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:48 Unit [2018-06-22 15:53:48,558 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 15:53:48,559 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 15:53:48,559 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 15:53:48,559 INFO ]: Boogie Preprocessor initialized [2018-06-22 15:53:48,582 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:48" (1/1) ... [2018-06-22 15:53:48,582 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:48" (1/1) ... [2018-06-22 15:53:48,592 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:48" (1/1) ... [2018-06-22 15:53:48,592 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:48" (1/1) ... [2018-06-22 15:53:48,608 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:48" (1/1) ... [2018-06-22 15:53:48,609 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:48" (1/1) ... [2018-06-22 15:53:48,611 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:48" (1/1) ... [2018-06-22 15:53:48,613 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 15:53:48,614 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 15:53:48,614 INFO ]: Initializing RCFGBuilder... [2018-06-22 15:53:48,614 INFO ]: RCFGBuilder initialized [2018-06-22 15:53:48,614 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:48" (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 15:53:48,646 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 15:53:48,646 INFO ]: Found specification of procedure False [2018-06-22 15:53:48,646 INFO ]: Found implementation of procedure False [2018-06-22 15:53:48,646 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 15:53:48,646 INFO ]: Found specification of procedure state [2018-06-22 15:53:48,646 INFO ]: Found implementation of procedure state [2018-06-22 15:53:48,646 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 15:53:48,646 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 15:53:48,646 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 [2018-06-22 15:53:48,980 INFO ]: Using library mode [2018-06-22 15:53:48,980 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:53:48 BoogieIcfgContainer [2018-06-22 15:53:48,980 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 15:53:48,982 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 15:53:48,982 INFO ]: Initializing TraceAbstraction... [2018-06-22 15:53:48,993 INFO ]: TraceAbstraction initialized [2018-06-22 15:53:48,993 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:53:48" (1/3) ... [2018-06-22 15:53:48,994 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792ef336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 03:53:48, skipping insertion in model container [2018-06-22 15:53:48,994 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:48" (2/3) ... [2018-06-22 15:53:48,995 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792ef336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:53:48, skipping insertion in model container [2018-06-22 15:53:48,995 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:53:48" (3/3) ... [2018-06-22 15:53:48,996 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 15:53:49,006 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 15:53:49,017 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 15:53:49,069 INFO ]: Using default assertion order modulation [2018-06-22 15:53:49,069 INFO ]: Interprodecural is true [2018-06-22 15:53:49,070 INFO ]: Hoare is false [2018-06-22 15:53:49,070 INFO ]: Compute interpolants for FPandBP [2018-06-22 15:53:49,070 INFO ]: Backedges is TWOTRACK [2018-06-22 15:53:49,070 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 15:53:49,070 INFO ]: Difference is false [2018-06-22 15:53:49,070 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 15:53:49,070 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 15:53:49,086 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 15:53:49,098 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 15:53:49,099 INFO ]: Found error trace [2018-06-22 15:53:49,099 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:53:49,100 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:53:49,105 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 15:53:49,107 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:53:49,108 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:53:49,143 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:49,143 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:53:49,143 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:49,223 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:49,409 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 15:53:49,411 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 15:53:49,411 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 15:53:49,412 INFO ]: Interpolant automaton has 4 states [2018-06-22 15:53:49,423 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 15:53:49,423 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:53:49,425 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 15:53:49,544 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:53:49,544 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:53:49,545 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 15:53:49,546 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 15:53:49,546 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:53:49,555 INFO ]: With dead ends: 13 [2018-06-22 15:53:49,556 INFO ]: Without dead ends: 13 [2018-06-22 15:53:49,557 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 [2018-06-22 15:53:49,571 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 15:53:49,597 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 15:53:49,598 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 15:53:49,599 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 15:53:49,599 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 15:53:49,600 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:53:49,600 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 15:53:49,600 INFO ]: Interpolant automaton has 4 states. [2018-06-22 15:53:49,600 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 15:53:49,601 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 15:53:49,601 INFO ]: Found error trace [2018-06-22 15:53:49,601 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:53:49,601 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:53:49,601 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 15:53:49,601 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:53:49,601 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:53:49,602 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:49,602 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:53:49,602 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:49,666 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:50,748 WARN ]: Spent 904.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2018-06-22 15:53:50,917 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:53:50,917 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:53:50,918 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 15:53:50,929 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:53:50,996 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:51,006 INFO ]: Computing forward predicates... [2018-06-22 15:53:51,478 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 7 [2018-06-22 15:53:51,755 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:53:51,789 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:53:51,789 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 15:53:51,790 INFO ]: Interpolant automaton has 9 states [2018-06-22 15:53:51,790 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 15:53:51,790 INFO ]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 15:53:51,790 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 15:53:52,305 WARN ]: Spent 371.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2018-06-22 15:53:52,518 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:53:52,518 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 15:53:52,519 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:53:52,519 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 15:53:52,519 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:53:52,520 INFO ]: With dead ends: 15 [2018-06-22 15:53:52,520 INFO ]: Without dead ends: 15 [2018-06-22 15:53:52,525 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-06-22 15:53:52,525 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 15:53:52,528 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 15:53:52,529 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 15:53:52,529 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 15:53:52,529 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 15:53:52,529 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:53:52,529 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 15:53:52,529 INFO ]: Interpolant automaton has 9 states. [2018-06-22 15:53:52,529 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 15:53:52,530 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 15:53:52,530 INFO ]: Found error trace [2018-06-22 15:53:52,530 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:53:52,530 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:53:52,530 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 15:53:52,530 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:53:52,530 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:53:52,531 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:52,531 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:53:52,531 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:52,607 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:52,940 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 27 [2018-06-22 15:53:53,034 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:53:53,035 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:53:53,035 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:53:53,050 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:53:53,126 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:53:53,126 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:53,131 INFO ]: Computing forward predicates... [2018-06-22 15:53:53,991 WARN ]: Spent 226.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 30 [2018-06-22 15:53:54,147 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:53:54,175 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:53:54,175 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 15:53:54,176 INFO ]: Interpolant automaton has 13 states [2018-06-22 15:53:54,176 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 15:53:54,176 INFO ]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-06-22 15:53:54,176 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 15:53:54,462 WARN ]: Spent 214.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2018-06-22 15:53:54,625 WARN ]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2018-06-22 15:53:54,881 WARN ]: Spent 161.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-06-22 15:53:54,913 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:53:54,913 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:53:54,915 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:53:54,915 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 15:53:54,915 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:53:54,916 INFO ]: With dead ends: 17 [2018-06-22 15:53:54,916 INFO ]: Without dead ends: 17 [2018-06-22 15:53:54,916 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-06-22 15:53:54,916 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 15:53:54,919 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 15:53:54,919 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 15:53:54,919 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 15:53:54,920 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 15:53:54,920 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:53:54,920 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 15:53:54,920 INFO ]: Interpolant automaton has 13 states. [2018-06-22 15:53:54,920 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 15:53:54,920 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 15:53:54,920 INFO ]: Found error trace [2018-06-22 15:53:54,920 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:53:54,921 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:53:54,921 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 15:53:54,921 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:53:54,921 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:53:54,922 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:54,922 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:53:54,922 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:54,998 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:55,314 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2018-06-22 15:53:55,552 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:53:55,552 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:53:55,552 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:53:55,562 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 15:53:55,668 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 15:53:55,668 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:55,674 INFO ]: Computing forward predicates... [2018-06-22 15:53:56,274 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:53:56,294 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:53:56,294 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 15:53:56,294 INFO ]: Interpolant automaton has 17 states [2018-06-22 15:53:56,294 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 15:53:56,295 INFO ]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2018-06-22 15:53:56,295 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 15:53:56,556 WARN ]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-06-22 15:53:56,742 WARN ]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2018-06-22 15:53:56,894 WARN ]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-06-22 15:53:56,903 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:53:56,903 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:53:56,904 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:53:56,904 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 15:53:56,905 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:53:56,905 INFO ]: With dead ends: 13 [2018-06-22 15:53:56,905 INFO ]: Without dead ends: 0 [2018-06-22 15:53:56,905 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2018-06-22 15:53:56,905 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 15:53:56,905 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 15:53:56,905 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 15:53:56,905 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 15:53:56,905 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 15:53:56,905 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:53:56,905 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 15:53:56,905 INFO ]: Interpolant automaton has 17 states. [2018-06-22 15:53:56,905 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 15:53:56,906 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 15:53:56,911 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:53:56 BoogieIcfgContainer [2018-06-22 15:53:56,911 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 15:53:56,911 INFO ]: Toolchain (without parser) took 8411.15 ms. Allocated memory was 296.7 MB in the beginning and 432.5 MB in the end (delta: 135.8 MB). Free memory was 245.1 MB in the beginning and 361.7 MB in the end (delta: -116.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 3.6 GB. [2018-06-22 15:53:56,912 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 296.7 MB. Free memory is still 262.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:53:56,912 INFO ]: ChcToBoogie took 52.43 ms. Allocated memory is still 296.7 MB. Free memory was 245.1 MB in the beginning and 243.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:53:56,913 INFO ]: Boogie Preprocessor took 54.30 ms. Allocated memory is still 296.7 MB. Free memory was 243.1 MB in the beginning and 241.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:53:56,913 INFO ]: RCFGBuilder took 366.91 ms. Allocated memory is still 296.7 MB. Free memory was 241.1 MB in the beginning and 225.1 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:53:56,914 INFO ]: TraceAbstraction took 7928.58 ms. Allocated memory was 296.7 MB in the beginning and 432.5 MB in the end (delta: 135.8 MB). Free memory was 225.1 MB in the beginning and 361.7 MB in the end (delta: -136.6 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:53:56,916 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 296.7 MB. Free memory is still 262.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 52.43 ms. Allocated memory is still 296.7 MB. Free memory was 245.1 MB in the beginning and 243.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 54.30 ms. Allocated memory is still 296.7 MB. Free memory was 243.1 MB in the beginning and 241.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 366.91 ms. Allocated memory is still 296.7 MB. Free memory was 241.1 MB in the beginning and 225.1 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 7928.58 ms. Allocated memory was 296.7 MB in the beginning and 432.5 MB in the end (delta: 135.8 MB). Free memory was 225.1 MB in the beginning and 361.7 MB in the end (delta: -136.6 MB). There was no memory consumed. 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, 7.8s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 SDtfs, 34 SDslu, 146 SDs, 0 SdLazy, 131 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 12064 SizeOfPredicates, 94 NumberOfNonLiveVariables, 1071 ConjunctsInSsa, 123 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 20/68 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_e6_784.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_15-53-56-926.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_4_e3_57_e6_784.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_15-53-56-926.csv Received shutdown request...