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_3_e8_33_e7_220.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 13:54:27,305 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 13:54:27,307 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 13:54:27,322 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 13:54:27,323 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 13:54:27,324 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 13:54:27,325 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 13:54:27,327 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 13:54:27,329 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 13:54:27,330 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 13:54:27,332 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 13:54:27,332 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 13:54:27,333 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 13:54:27,334 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 13:54:27,334 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 13:54:27,337 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 13:54:27,339 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 13:54:27,349 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 13:54:27,350 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 13:54:27,351 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 13:54:27,352 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 13:54:27,354 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 13:54:27,354 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 13:54:27,355 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 13:54:27,359 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 13:54:27,359 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 13:54:27,360 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 13:54:27,362 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 13:54:27,363 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 13:54:27,364 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 13:54:27,364 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 13:54:27,365 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 13:54:27,365 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 13:54:27,369 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 13:54:27,369 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 13:54:27,370 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 13:54:27,393 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 13:54:27,393 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 13:54:27,394 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 13:54:27,394 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 13:54:27,395 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 13:54:27,395 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 13:54:27,399 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 13:54:27,399 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 13:54:27,399 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 13:54:27,400 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 13:54:27,400 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 13:54:27,400 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 13:54:27,400 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 13:54:27,400 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 13:54:27,400 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 13:54:27,401 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 13:54:27,401 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 13:54:27,402 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 13:54:27,402 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 13:54:27,445 INFO ]: Repository-Root is: /tmp [2018-06-18 13:54:27,457 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 13:54:27,465 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 13:54:27,466 INFO ]: Initializing SmtParser... [2018-06-18 13:54:27,467 INFO ]: SmtParser initialized [2018-06-18 13:54:27,467 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_3_e8_33_e7_220.smt2 [2018-06-18 13:54:27,469 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 13:54:27,563 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_3_e8_33_e7_220.smt2 unknown [2018-06-18 13:54:27,944 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_3_e8_33_e7_220.smt2 [2018-06-18 13:54:27,958 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 13:54:27,967 INFO ]: Walking toolchain with 4 elements. [2018-06-18 13:54:27,967 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 13:54:27,967 INFO ]: Initializing ChcToBoogie... [2018-06-18 13:54:27,967 INFO ]: ChcToBoogie initialized [2018-06-18 13:54:27,975 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 01:54:27" (1/1) ... [2018-06-18 13:54:28,060 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:28 Unit [2018-06-18 13:54:28,061 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 13:54:28,061 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 13:54:28,061 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 13:54:28,061 INFO ]: Boogie Preprocessor initialized [2018-06-18 13:54:28,081 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:28" (1/1) ... [2018-06-18 13:54:28,081 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:28" (1/1) ... [2018-06-18 13:54:28,088 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:28" (1/1) ... [2018-06-18 13:54:28,089 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:28" (1/1) ... [2018-06-18 13:54:28,093 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:28" (1/1) ... [2018-06-18 13:54:28,094 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:28" (1/1) ... [2018-06-18 13:54:28,098 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:28" (1/1) ... [2018-06-18 13:54:28,101 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 13:54:28,101 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 13:54:28,101 INFO ]: Initializing RCFGBuilder... [2018-06-18 13:54:28,101 INFO ]: RCFGBuilder initialized [2018-06-18 13:54:28,103 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:28" (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 13:54:28,114 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 13:54:28,114 INFO ]: Found specification of procedure False [2018-06-18 13:54:28,114 INFO ]: Found implementation of procedure False [2018-06-18 13:54:28,114 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 13:54:28,114 INFO ]: Found specification of procedure state [2018-06-18 13:54:28,114 INFO ]: Found implementation of procedure state [2018-06-18 13:54:28,114 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 13:54:28,114 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 13:54:28,114 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 13:54:28,468 INFO ]: Using library mode [2018-06-18 13:54:28,468 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 01:54:28 BoogieIcfgContainer [2018-06-18 13:54:28,468 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 13:54:28,469 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 13:54:28,470 INFO ]: Initializing TraceAbstraction... [2018-06-18 13:54:28,473 INFO ]: TraceAbstraction initialized [2018-06-18 13:54:28,473 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 01:54:27" (1/3) ... [2018-06-18 13:54:28,474 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50647ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 01:54:28, skipping insertion in model container [2018-06-18 13:54:28,474 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:54:28" (2/3) ... [2018-06-18 13:54:28,474 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50647ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 01:54:28, skipping insertion in model container [2018-06-18 13:54:28,474 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 01:54:28" (3/3) ... [2018-06-18 13:54:28,479 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 13:54:28,487 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 13:54:28,495 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 13:54:28,535 INFO ]: Using default assertion order modulation [2018-06-18 13:54:28,535 INFO ]: Interprodecural is true [2018-06-18 13:54:28,535 INFO ]: Hoare is false [2018-06-18 13:54:28,535 INFO ]: Compute interpolants for FPandBP [2018-06-18 13:54:28,535 INFO ]: Backedges is TWOTRACK [2018-06-18 13:54:28,536 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 13:54:28,536 INFO ]: Difference is false [2018-06-18 13:54:28,536 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 13:54:28,536 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 13:54:28,555 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 13:54:28,567 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 13:54:28,567 INFO ]: Found error trace [2018-06-18 13:54:28,568 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:54:28,569 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:54:28,573 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 13:54:28,574 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:54:28,575 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:54:28,613 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:54:28,613 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:54:28,613 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:54:28,712 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:54:28,722 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:54:29,228 WARN ]: Spent 186.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-06-18 13:54:29,232 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 13:54:29,243 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 13:54:29,244 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 13:54:29,246 INFO ]: Interpolant automaton has 4 states [2018-06-18 13:54:29,262 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 13:54:29,263 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 13:54:29,267 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 13:54:29,382 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:54:29,382 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 13:54:29,383 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 13:54:29,384 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 13:54:29,384 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:54:29,400 INFO ]: With dead ends: 13 [2018-06-18 13:54:29,400 INFO ]: Without dead ends: 13 [2018-06-18 13:54:29,404 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 13:54:29,422 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 13:54:29,443 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 13:54:29,444 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 13:54:29,445 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 13:54:29,447 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 13:54:29,447 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:54:29,447 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 13:54:29,447 INFO ]: Interpolant automaton has 4 states. [2018-06-18 13:54:29,447 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 13:54:29,449 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 13:54:29,449 INFO ]: Found error trace [2018-06-18 13:54:29,449 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:54:29,449 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:54:29,449 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 13:54:29,449 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:54:29,449 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:54:29,451 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:54:29,451 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:54:29,451 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:54:29,565 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:54:29,565 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:54:30,234 WARN ]: Spent 396.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2018-06-18 13:54:30,319 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 13:54:30,320 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:54:30,320 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 [2018-06-18 13:54:30,362 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:54:30,479 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:54:30,493 INFO ]: Computing forward predicates... [2018-06-18 13:54:31,840 WARN ]: Spent 984.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 17 [2018-06-18 13:54:31,969 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 13:54:31,991 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:54:31,991 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-18 13:54:31,991 INFO ]: Interpolant automaton has 9 states [2018-06-18 13:54:31,992 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-18 13:54:31,992 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-18 13:54:31,992 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-18 13:54:32,427 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:54:32,427 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 13:54:32,428 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 13:54:32,428 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-18 13:54:32,428 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:54:32,429 INFO ]: With dead ends: 15 [2018-06-18 13:54:32,429 INFO ]: Without dead ends: 15 [2018-06-18 13:54:32,430 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-06-18 13:54:32,430 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 13:54:32,432 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 13:54:32,432 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 13:54:32,433 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 13:54:32,433 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 13:54:32,433 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:54:32,433 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 13:54:32,433 INFO ]: Interpolant automaton has 9 states. [2018-06-18 13:54:32,433 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 13:54:32,434 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 13:54:32,434 INFO ]: Found error trace [2018-06-18 13:54:32,434 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:54:32,434 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:54:32,434 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 13:54:32,434 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:54:32,434 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:54:32,435 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:54:32,435 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:54:32,435 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:54:32,488 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:54:32,489 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:54:32,870 WARN ]: Spent 196.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2018-06-18 13:54:32,996 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2018-06-18 13:54:33,376 WARN ]: Spent 338.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-06-18 13:54:33,428 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 13:54:33,429 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:54:33,429 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 13:54:33,437 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 13:54:33,515 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 13:54:33,515 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:54:33,521 INFO ]: Computing forward predicates... [2018-06-18 13:54:34,438 WARN ]: Spent 293.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 22 [2018-06-18 13:54:34,514 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 13:54:34,551 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:54:34,551 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-18 13:54:34,551 INFO ]: Interpolant automaton has 13 states [2018-06-18 13:54:34,551 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-18 13:54:34,552 INFO ]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-06-18 13:54:34,552 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-18 13:54:34,858 WARN ]: Spent 203.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2018-06-18 13:54:35,089 WARN ]: Spent 196.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2018-06-18 13:54:35,231 WARN ]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-06-18 13:54:35,263 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:54:35,263 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-18 13:54:35,265 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 13:54:35,265 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-18 13:54:35,265 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:54:35,266 INFO ]: With dead ends: 17 [2018-06-18 13:54:35,266 INFO ]: Without dead ends: 17 [2018-06-18 13:54:35,267 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-06-18 13:54:35,267 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-18 13:54:35,270 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-18 13:54:35,270 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-18 13:54:35,270 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-18 13:54:35,270 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-18 13:54:35,271 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:54:35,271 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-18 13:54:35,271 INFO ]: Interpolant automaton has 13 states. [2018-06-18 13:54:35,271 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-18 13:54:35,271 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-18 13:54:35,272 INFO ]: Found error trace [2018-06-18 13:54:35,272 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:54:35,272 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:54:35,272 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-18 13:54:35,272 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:54:35,272 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:54:35,273 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:54:35,273 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:54:35,273 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:54:35,368 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:54:35,377 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:54:35,751 WARN ]: Spent 125.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 14 [2018-06-18 13:54:36,041 WARN ]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-06-18 13:54:36,185 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 13:54:36,185 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:54:36,185 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 [2018-06-18 13:54:36,199 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-18 13:54:36,308 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-18 13:54:36,308 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:54:36,315 INFO ]: Computing forward predicates... [2018-06-18 13:54:36,682 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 13:54:36,718 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 13:54:36,817 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:54:36,819 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:54:36,837 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 13:54:36,912 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:54:36,915 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 13:54:36,998 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 13:54:37,308 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 13:54:39,122 WARN ]: Spent 440.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 22 [2018-06-18 13:54:39,381 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:54:39,384 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:54:45,551 WARN ]: Spent 2.62 s on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2018-06-18 13:54:46,425 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 13:54:46,458 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:54:46,458 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-18 13:54:46,458 INFO ]: Interpolant automaton has 17 states [2018-06-18 13:54:46,458 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-18 13:54:46,459 INFO ]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2018-06-18 13:54:46,459 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-18 13:54:46,999 WARN ]: Spent 155.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2018-06-18 13:54:50,906 WARN ]: Spent 3.84 s on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2018-06-18 13:54:52,316 WARN ]: Spent 1.31 s on a formula simplification. DAG size of input: 101 DAG size of output: 67 [2018-06-18 13:54:56,186 WARN ]: Spent 3.83 s on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2018-06-18 13:54:57,020 WARN ]: Spent 755.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2018-06-18 13:54:57,058 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:54:57,058 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-18 13:54:57,059 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-18 13:54:57,059 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-18 13:54:57,059 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:54:57,060 INFO ]: With dead ends: 19 [2018-06-18 13:54:57,060 INFO ]: Without dead ends: 19 [2018-06-18 13:54:57,060 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2018-06-18 13:54:57,060 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-18 13:54:57,063 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-18 13:54:57,063 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-18 13:54:57,064 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-18 13:54:57,064 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-18 13:54:57,064 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:54:57,064 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-18 13:54:57,064 INFO ]: Interpolant automaton has 17 states. [2018-06-18 13:54:57,064 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-18 13:54:57,065 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-18 13:54:57,065 INFO ]: Found error trace [2018-06-18 13:54:57,065 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:54:57,065 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:54:57,065 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-18 13:54:57,065 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:54:57,065 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:54:57,066 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:54:57,066 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:54:57,066 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:54:57,169 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:54:57,170 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:54:57,502 WARN ]: Spent 108.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 16 [2018-06-18 13:54:57,654 WARN ]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2018-06-18 13:54:57,805 WARN ]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2018-06-18 13:54:57,972 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 13:54:57,972 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:54:57,972 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:54:57,979 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-18 13:54:58,059 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-18 13:54:58,059 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:54:58,065 INFO ]: Computing forward predicates... [2018-06-18 13:54:59,330 WARN ]: Spent 579.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2018-06-18 13:55:00,887 WARN ]: Spent 182.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2018-06-18 13:55:00,924 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 13:55:00,958 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:55:00,958 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-06-18 13:55:00,958 INFO ]: Interpolant automaton has 21 states [2018-06-18 13:55:00,958 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-18 13:55:00,958 INFO ]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2018-06-18 13:55:00,958 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 21 states. [2018-06-18 13:55:01,869 WARN ]: Spent 797.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 97 [2018-06-18 13:55:02,313 WARN ]: Spent 392.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 65 [2018-06-18 13:55:03,119 WARN ]: Spent 638.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 85 [2018-06-18 13:55:04,807 WARN ]: Spent 1.64 s on a formula simplification. DAG size of input: 130 DAG size of output: 96 [2018-06-18 13:55:05,824 WARN ]: Spent 909.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 96 [2018-06-18 13:55:05,837 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:55:05,837 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 13:55:05,838 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-18 13:55:05,838 INFO ]: Start accepts. Automaton has 21 states. Word has length 25 [2018-06-18 13:55:05,838 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:55:05,838 INFO ]: With dead ends: 15 [2018-06-18 13:55:05,838 INFO ]: Without dead ends: 0 [2018-06-18 13:55:05,838 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2018-06-18 13:55:05,838 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-18 13:55:05,838 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-18 13:55:05,838 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-18 13:55:05,838 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-18 13:55:05,839 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-18 13:55:05,839 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:55:05,839 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-18 13:55:05,839 INFO ]: Interpolant automaton has 21 states. [2018-06-18 13:55:05,839 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-18 13:55:05,839 INFO ]: Finished isEmpty. No accepting run. [2018-06-18 13:55:05,844 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 01:55:05 BoogieIcfgContainer [2018-06-18 13:55:05,844 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 13:55:05,845 INFO ]: Toolchain (without parser) took 37885.99 ms. Allocated memory was 303.0 MB in the beginning and 536.3 MB in the end (delta: 233.3 MB). Free memory was 249.5 MB in the beginning and 211.2 MB in the end (delta: 38.3 MB). Peak memory consumption was 271.6 MB. Max. memory is 3.6 GB. [2018-06-18 13:55:05,845 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 303.0 MB. Free memory is still 266.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 13:55:05,846 INFO ]: ChcToBoogie took 93.97 ms. Allocated memory is still 303.0 MB. Free memory was 249.5 MB in the beginning and 246.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-18 13:55:05,846 INFO ]: Boogie Preprocessor took 39.24 ms. Allocated memory is still 303.0 MB. Free memory was 246.5 MB in the beginning and 245.5 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-18 13:55:05,846 INFO ]: RCFGBuilder took 367.19 ms. Allocated memory is still 303.0 MB. Free memory was 245.5 MB in the beginning and 229.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-18 13:55:05,847 INFO ]: TraceAbstraction took 37374.46 ms. Allocated memory was 303.0 MB in the beginning and 536.3 MB in the end (delta: 233.3 MB). Free memory was 229.5 MB in the beginning and 211.2 MB in the end (delta: 18.3 MB). Peak memory consumption was 251.6 MB. Max. memory is 3.6 GB. [2018-06-18 13:55:05,849 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 303.0 MB. Free memory is still 266.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 93.97 ms. Allocated memory is still 303.0 MB. Free memory was 249.5 MB in the beginning and 246.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 39.24 ms. Allocated memory is still 303.0 MB. Free memory was 246.5 MB in the beginning and 245.5 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 367.19 ms. Allocated memory is still 303.0 MB. Free memory was 245.5 MB in the beginning and 229.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 37374.46 ms. Allocated memory was 303.0 MB in the beginning and 536.3 MB in the end (delta: 233.3 MB). Free memory was 229.5 MB in the beginning and 211.2 MB in the end (delta: 18.3 MB). Peak memory consumption was 251.6 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, 37.3s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 16.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 73 SDslu, 244 SDs, 0 SdLazy, 206 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 25.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 19.2s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 42432 SizeOfPredicates, 179 NumberOfNonLiveVariables, 1684 ConjunctsInSsa, 251 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 40/140 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_3_e8_33_e7_220.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_13-55-05-860.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_3_e8_33_e7_220.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_13-55-05-860.csv Received shutdown request...