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_1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 15:51:10,196 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 15:51:10,198 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 15:51:10,210 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 15:51:10,211 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 15:51:10,212 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 15:51:10,213 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 15:51:10,215 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 15:51:10,217 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 15:51:10,218 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 15:51:10,252 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 15:51:10,252 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 15:51:10,253 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 15:51:10,255 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 15:51:10,255 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 15:51:10,256 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 15:51:10,260 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 15:51:10,263 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 15:51:10,276 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 15:51:10,277 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 15:51:10,278 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 15:51:10,280 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 15:51:10,280 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 15:51:10,280 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 15:51:10,281 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 15:51:10,282 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 15:51:10,283 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 15:51:10,283 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 15:51:10,285 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 15:51:10,285 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 15:51:10,285 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 15:51:10,286 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 15:51:10,286 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 15:51:10,287 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 15:51:10,290 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 15:51:10,291 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 15:51:10,307 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 15:51:10,307 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 15:51:10,308 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 15:51:10,308 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 15:51:10,308 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 15:51:10,308 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 15:51:10,309 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 15:51:10,309 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 15:51:10,309 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 15:51:10,309 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 15:51:10,309 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:51:10,309 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 15:51:10,310 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 15:51:10,310 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 15:51:10,310 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 15:51:10,310 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 15:51:10,310 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 15:51:10,310 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 15:51:10,311 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 15:51:10,312 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 15:51:10,312 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 15:51:10,364 INFO ]: Repository-Root is: /tmp [2018-06-22 15:51:10,382 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 15:51:10,386 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 15:51:10,388 INFO ]: Initializing SmtParser... [2018-06-22 15:51:10,388 INFO ]: SmtParser initialized [2018-06-22 15:51:10,389 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_1.smt2 [2018-06-22 15:51:10,390 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 15:51:10,480 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_1.smt2 unknown [2018-06-22 15:51:10,940 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_1.smt2 [2018-06-22 15:51:10,945 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 15:51:10,959 INFO ]: Walking toolchain with 4 elements. [2018-06-22 15:51:10,960 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 15:51:10,960 INFO ]: Initializing ChcToBoogie... [2018-06-22 15:51:10,960 INFO ]: ChcToBoogie initialized [2018-06-22 15:51:10,963 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:51:10" (1/1) ... [2018-06-22 15:51:11,049 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:11 Unit [2018-06-22 15:51:11,049 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 15:51:11,049 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 15:51:11,049 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 15:51:11,049 INFO ]: Boogie Preprocessor initialized [2018-06-22 15:51:11,064 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:11" (1/1) ... [2018-06-22 15:51:11,064 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:11" (1/1) ... [2018-06-22 15:51:11,071 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:11" (1/1) ... [2018-06-22 15:51:11,071 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:11" (1/1) ... [2018-06-22 15:51:11,076 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:11" (1/1) ... [2018-06-22 15:51:11,078 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:11" (1/1) ... [2018-06-22 15:51:11,079 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:11" (1/1) ... [2018-06-22 15:51:11,082 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 15:51:11,082 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 15:51:11,082 INFO ]: Initializing RCFGBuilder... [2018-06-22 15:51:11,082 INFO ]: RCFGBuilder initialized [2018-06-22 15:51:11,083 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:11" (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 15:51:11,093 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 15:51:11,093 INFO ]: Found specification of procedure False [2018-06-22 15:51:11,093 INFO ]: Found implementation of procedure False [2018-06-22 15:51:11,093 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 15:51:11,093 INFO ]: Found specification of procedure state [2018-06-22 15:51:11,093 INFO ]: Found implementation of procedure state [2018-06-22 15:51:11,093 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 15:51:11,093 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 15:51:11,093 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 15:51:11,351 INFO ]: Using library mode [2018-06-22 15:51:11,351 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:51:11 BoogieIcfgContainer [2018-06-22 15:51:11,351 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 15:51:11,353 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 15:51:11,353 INFO ]: Initializing TraceAbstraction... [2018-06-22 15:51:11,356 INFO ]: TraceAbstraction initialized [2018-06-22 15:51:11,356 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:51:10" (1/3) ... [2018-06-22 15:51:11,357 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a814f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 03:51:11, skipping insertion in model container [2018-06-22 15:51:11,357 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:11" (2/3) ... [2018-06-22 15:51:11,357 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a814f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:51:11, skipping insertion in model container [2018-06-22 15:51:11,358 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:51:11" (3/3) ... [2018-06-22 15:51:11,359 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 15:51:11,368 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 15:51:11,379 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 15:51:11,418 INFO ]: Using default assertion order modulation [2018-06-22 15:51:11,418 INFO ]: Interprodecural is true [2018-06-22 15:51:11,418 INFO ]: Hoare is false [2018-06-22 15:51:11,418 INFO ]: Compute interpolants for FPandBP [2018-06-22 15:51:11,418 INFO ]: Backedges is TWOTRACK [2018-06-22 15:51:11,418 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 15:51:11,418 INFO ]: Difference is false [2018-06-22 15:51:11,418 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 15:51:11,418 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 15:51:11,430 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 15:51:11,440 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 15:51:11,440 INFO ]: Found error trace [2018-06-22 15:51:11,441 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:51:11,441 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:51:11,446 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 15:51:11,448 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:51:11,448 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:51:11,486 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:11,486 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:51:11,486 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:11,564 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:11,748 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 15:51:11,750 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 15:51:11,750 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 15:51:11,752 INFO ]: Interpolant automaton has 4 states [2018-06-22 15:51:11,762 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 15:51:11,763 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:51:11,765 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 15:51:11,869 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:51:11,869 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:51:11,870 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 15:51:11,871 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 15:51:11,871 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:51:11,882 INFO ]: With dead ends: 13 [2018-06-22 15:51:11,882 INFO ]: Without dead ends: 13 [2018-06-22 15:51:11,883 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 15:51:11,896 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 15:51:11,924 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 15:51:11,926 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 15:51:11,926 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 15:51:11,927 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 15:51:11,928 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:51:11,928 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 15:51:11,928 INFO ]: Interpolant automaton has 4 states. [2018-06-22 15:51:11,928 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 15:51:11,929 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 15:51:11,929 INFO ]: Found error trace [2018-06-22 15:51:11,929 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:51:11,929 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:51:11,929 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 15:51:11,929 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:51:11,929 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:51:11,931 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:11,931 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:51:11,931 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:12,019 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:12,530 WARN ]: Spent 388.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 21 [2018-06-22 15:51:12,578 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:51:12,578 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:51:12,578 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 15:51:12,586 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:51:12,681 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:12,688 INFO ]: Computing forward predicates... [2018-06-22 15:51:13,954 WARN ]: Spent 338.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 7 [2018-06-22 15:51:14,051 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:51:14,083 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:51:14,083 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 15:51:14,084 INFO ]: Interpolant automaton has 8 states [2018-06-22 15:51:14,084 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 15:51:14,084 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 15:51:14,084 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 15:51:14,539 WARN ]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-06-22 15:51:14,778 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:51:14,778 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 15:51:14,779 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:51:14,779 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 15:51:14,779 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:51:14,780 INFO ]: With dead ends: 15 [2018-06-22 15:51:14,780 INFO ]: Without dead ends: 15 [2018-06-22 15:51:14,781 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-22 15:51:14,781 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 15:51:14,783 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 15:51:14,783 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 15:51:14,784 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 15:51:14,784 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 15:51:14,784 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:51:14,784 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 15:51:14,784 INFO ]: Interpolant automaton has 8 states. [2018-06-22 15:51:14,784 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 15:51:14,785 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 15:51:14,785 INFO ]: Found error trace [2018-06-22 15:51:14,785 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:51:14,785 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:51:14,785 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 15:51:14,785 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:51:14,785 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:51:14,786 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:14,786 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:51:14,786 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:14,831 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:15,079 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:51:15,079 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:51:15,079 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 15:51:15,087 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:51:15,165 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:51:15,165 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:15,169 INFO ]: Computing forward predicates... [2018-06-22 15:51:15,412 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:51:15,432 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:51:15,432 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 15:51:15,432 INFO ]: Interpolant automaton has 12 states [2018-06-22 15:51:15,433 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 15:51:15,433 INFO ]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-06-22 15:51:15,433 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 15:51:15,629 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:51:15,629 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:51:15,630 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:51:15,630 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 15:51:15,630 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:51:15,631 INFO ]: With dead ends: 17 [2018-06-22 15:51:15,631 INFO ]: Without dead ends: 17 [2018-06-22 15:51:15,631 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-06-22 15:51:15,631 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 15:51:15,633 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 15:51:15,634 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 15:51:15,634 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 15:51:15,634 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 15:51:15,634 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:51:15,634 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 15:51:15,634 INFO ]: Interpolant automaton has 12 states. [2018-06-22 15:51:15,634 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 15:51:15,635 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 15:51:15,635 INFO ]: Found error trace [2018-06-22 15:51:15,635 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:51:15,635 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:51:15,635 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 15:51:15,635 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:51:15,635 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:51:15,636 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:15,636 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:51:15,636 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:15,686 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:16,012 INFO ]: Checked inductivity of 21 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 15:51:16,012 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:51:16,012 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) [2018-06-22 15:51:16,030 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:51:16,153 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 15:51:16,153 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:16,158 INFO ]: Computing forward predicates... [2018-06-22 15:51:16,393 INFO ]: Checked inductivity of 21 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 15:51:16,413 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:51:16,447 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-06-22 15:51:16,447 INFO ]: Interpolant automaton has 14 states [2018-06-22 15:51:16,447 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 15:51:16,447 INFO ]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-06-22 15:51:16,447 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 14 states. [2018-06-22 15:51:16,640 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:51:16,640 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:51:16,641 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:51:16,641 INFO ]: Start accepts. Automaton has 14 states. Word has length 21 [2018-06-22 15:51:16,642 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:51:16,642 INFO ]: With dead ends: 13 [2018-06-22 15:51:16,642 INFO ]: Without dead ends: 0 [2018-06-22 15:51:16,642 INFO ]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2018-06-22 15:51:16,642 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 15:51:16,642 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 15:51:16,642 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 15:51:16,642 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 15:51:16,642 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 15:51:16,642 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:51:16,642 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 15:51:16,642 INFO ]: Interpolant automaton has 14 states. [2018-06-22 15:51:16,642 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 15:51:16,642 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 15:51:16,647 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:51:16 BoogieIcfgContainer [2018-06-22 15:51:16,647 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 15:51:16,648 INFO ]: Toolchain (without parser) took 5702.89 ms. Allocated memory was 306.2 MB in the beginning and 378.5 MB in the end (delta: 72.4 MB). Free memory was 254.6 MB in the beginning and 337.5 MB in the end (delta: -82.9 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:51:16,649 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:51:16,649 INFO ]: ChcToBoogie took 89.29 ms. Allocated memory is still 306.2 MB. Free memory was 254.6 MB in the beginning and 252.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:51:16,654 INFO ]: Boogie Preprocessor took 32.32 ms. Allocated memory is still 306.2 MB. Free memory was 252.6 MB in the beginning and 250.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:51:16,655 INFO ]: RCFGBuilder took 269.21 ms. Allocated memory is still 306.2 MB. Free memory was 250.6 MB in the beginning and 235.5 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 3.6 GB. [2018-06-22 15:51:16,655 INFO ]: TraceAbstraction took 5294.43 ms. Allocated memory was 306.2 MB in the beginning and 378.5 MB in the end (delta: 72.4 MB). Free memory was 234.5 MB in the beginning and 337.5 MB in the end (delta: -103.0 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:51:16,657 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 306.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 89.29 ms. Allocated memory is still 306.2 MB. Free memory was 254.6 MB in the beginning and 252.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 32.32 ms. Allocated memory is still 306.2 MB. Free memory was 252.6 MB in the beginning and 250.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 269.21 ms. Allocated memory is still 306.2 MB. Free memory was 250.6 MB in the beginning and 235.5 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5294.43 ms. Allocated memory was 306.2 MB in the beginning and 378.5 MB in the end (delta: 72.4 MB). Free memory was 234.5 MB in the beginning and 337.5 MB in the end (delta: -103.0 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, 5.2s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 28 SDslu, 122 SDs, 0 SdLazy, 100 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.3s 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, 3.1s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 6748 SizeOfPredicates, 79 NumberOfNonLiveVariables, 1071 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 24/68 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_1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_15-51-16-673.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_15-51-16-673.csv Received shutdown request...