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_3_e8_33_e2_1010.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 15:53:07,297 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 15:53:07,299 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 15:53:07,312 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 15:53:07,312 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 15:53:07,313 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 15:53:07,316 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 15:53:07,318 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 15:53:07,319 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 15:53:07,320 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 15:53:07,322 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 15:53:07,323 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 15:53:07,324 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 15:53:07,325 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 15:53:07,325 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 15:53:07,328 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 15:53:07,330 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 15:53:07,339 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 15:53:07,340 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 15:53:07,341 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 15:53:07,342 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 15:53:07,348 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 15:53:07,348 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 15:53:07,348 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 15:53:07,349 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 15:53:07,350 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 15:53:07,350 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 15:53:07,354 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 15:53:07,355 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 15:53:07,355 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 15:53:07,355 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 15:53:07,356 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 15:53:07,356 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 15:53:07,360 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 15:53:07,361 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 15:53:07,361 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 15:53:07,384 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 15:53:07,384 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 15:53:07,384 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 15:53:07,385 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 15:53:07,386 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 15:53:07,387 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 15:53:07,387 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 15:53:07,387 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 15:53:07,387 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 15:53:07,387 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 15:53:07,388 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:53:07,388 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 15:53:07,388 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 15:53:07,388 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 15:53:07,389 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 15:53:07,389 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 15:53:07,389 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 15:53:07,389 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 15:53:07,389 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 15:53:07,391 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 15:53:07,391 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 15:53:07,441 INFO ]: Repository-Root is: /tmp [2018-06-22 15:53:07,453 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 15:53:07,457 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 15:53:07,459 INFO ]: Initializing SmtParser... [2018-06-22 15:53:07,459 INFO ]: SmtParser initialized [2018-06-22 15:53:07,460 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_3_e8_33_e2_1010.smt2 [2018-06-22 15:53:07,461 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 15:53:07,552 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_3_e8_33_e2_1010.smt2 unknown [2018-06-22 15:53:07,962 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_3_e8_33_e2_1010.smt2 [2018-06-22 15:53:07,966 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 15:53:07,971 INFO ]: Walking toolchain with 4 elements. [2018-06-22 15:53:07,971 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 15:53:07,971 INFO ]: Initializing ChcToBoogie... [2018-06-22 15:53:07,972 INFO ]: ChcToBoogie initialized [2018-06-22 15:53:07,981 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:53:07" (1/1) ... [2018-06-22 15:53:08,064 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:08 Unit [2018-06-22 15:53:08,064 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 15:53:08,065 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 15:53:08,065 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 15:53:08,065 INFO ]: Boogie Preprocessor initialized [2018-06-22 15:53:08,110 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:08" (1/1) ... [2018-06-22 15:53:08,110 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:08" (1/1) ... [2018-06-22 15:53:08,129 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:08" (1/1) ... [2018-06-22 15:53:08,129 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:08" (1/1) ... [2018-06-22 15:53:08,134 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:08" (1/1) ... [2018-06-22 15:53:08,135 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:08" (1/1) ... [2018-06-22 15:53:08,144 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:08" (1/1) ... [2018-06-22 15:53:08,152 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 15:53:08,152 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 15:53:08,152 INFO ]: Initializing RCFGBuilder... [2018-06-22 15:53:08,152 INFO ]: RCFGBuilder initialized [2018-06-22 15:53:08,153 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:08" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:53:08,163 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 15:53:08,163 INFO ]: Found specification of procedure False [2018-06-22 15:53:08,163 INFO ]: Found implementation of procedure False [2018-06-22 15:53:08,163 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 15:53:08,163 INFO ]: Found specification of procedure state [2018-06-22 15:53:08,163 INFO ]: Found implementation of procedure state [2018-06-22 15:53:08,163 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 15:53:08,163 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 15:53:08,163 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 15:53:08,382 INFO ]: Using library mode [2018-06-22 15:53:08,383 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:53:08 BoogieIcfgContainer [2018-06-22 15:53:08,383 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 15:53:08,384 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 15:53:08,384 INFO ]: Initializing TraceAbstraction... [2018-06-22 15:53:08,387 INFO ]: TraceAbstraction initialized [2018-06-22 15:53:08,387 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:53:07" (1/3) ... [2018-06-22 15:53:08,388 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330e8e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 03:53:08, skipping insertion in model container [2018-06-22 15:53:08,388 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:08" (2/3) ... [2018-06-22 15:53:08,389 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330e8e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:53:08, skipping insertion in model container [2018-06-22 15:53:08,389 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:53:08" (3/3) ... [2018-06-22 15:53:08,390 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 15:53:08,399 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 15:53:08,406 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 15:53:08,437 INFO ]: Using default assertion order modulation [2018-06-22 15:53:08,438 INFO ]: Interprodecural is true [2018-06-22 15:53:08,438 INFO ]: Hoare is false [2018-06-22 15:53:08,438 INFO ]: Compute interpolants for FPandBP [2018-06-22 15:53:08,438 INFO ]: Backedges is TWOTRACK [2018-06-22 15:53:08,438 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 15:53:08,438 INFO ]: Difference is false [2018-06-22 15:53:08,438 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 15:53:08,438 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 15:53:08,452 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 15:53:08,463 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 15:53:08,463 INFO ]: Found error trace [2018-06-22 15:53:08,465 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:53:08,465 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:53:08,471 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 15:53:08,472 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:53:08,473 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:53:08,505 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:08,505 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:53:08,505 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:08,578 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:08,806 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 15:53:08,809 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 15:53:08,809 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 15:53:08,811 INFO ]: Interpolant automaton has 4 states [2018-06-22 15:53:08,823 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 15:53:08,824 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:53:08,826 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 15:53:08,937 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:53:08,937 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:53:08,938 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 15:53:08,939 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 15:53:08,940 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:53:08,953 INFO ]: With dead ends: 13 [2018-06-22 15:53:08,953 INFO ]: Without dead ends: 13 [2018-06-22 15:53:08,954 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:53:08,971 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 15:53:08,989 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 15:53:08,990 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 15:53:08,991 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 15:53:08,992 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 15:53:08,992 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:53:08,992 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 15:53:08,992 INFO ]: Interpolant automaton has 4 states. [2018-06-22 15:53:08,992 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 15:53:08,994 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 15:53:08,995 INFO ]: Found error trace [2018-06-22 15:53:08,995 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:53:08,995 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:53:08,995 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 15:53:08,995 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:53:08,995 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:53:08,996 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:08,996 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:53:08,996 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:09,085 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:09,947 WARN ]: Spent 612.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 27 [2018-06-22 15:53:10,103 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:53:10,104 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:53:10,104 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 15:53:10,119 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:53:10,214 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:10,224 INFO ]: Computing forward predicates... [2018-06-22 15:53:11,308 WARN ]: Spent 705.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 10 [2018-06-22 15:53:11,587 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:53:11,612 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:53:11,612 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 15:53:11,613 INFO ]: Interpolant automaton has 8 states [2018-06-22 15:53:11,613 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 15:53:11,613 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 15:53:11,613 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 15:53:12,000 WARN ]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-06-22 15:53:12,337 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:53:12,337 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 15:53:12,337 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:53:12,337 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 15:53:12,337 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:53:12,338 INFO ]: With dead ends: 15 [2018-06-22 15:53:12,338 INFO ]: Without dead ends: 15 [2018-06-22 15:53:12,339 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-06-22 15:53:12,339 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 15:53:12,342 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 15:53:12,342 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 15:53:12,343 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 15:53:12,343 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 15:53:12,343 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:53:12,343 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 15:53:12,343 INFO ]: Interpolant automaton has 8 states. [2018-06-22 15:53:12,343 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 15:53:12,343 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 15:53:12,343 INFO ]: Found error trace [2018-06-22 15:53:12,343 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:53:12,343 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:53:12,344 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 15:53:12,344 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:53:12,344 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:53:12,344 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:12,344 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:53:12,344 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:12,385 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:12,649 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2018-06-22 15:53:12,802 WARN ]: Spent 140.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 42 [2018-06-22 15:53:12,877 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:53:12,877 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:53:12,877 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 15:53:12,887 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:53:12,942 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:53:12,942 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:12,946 INFO ]: Computing forward predicates... [2018-06-22 15:53:13,334 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:53:13,355 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:53:13,355 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 15:53:13,356 INFO ]: Interpolant automaton has 12 states [2018-06-22 15:53:13,356 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 15:53:13,356 INFO ]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-06-22 15:53:13,356 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 15:53:13,745 WARN ]: Spent 241.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2018-06-22 15:53:14,024 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:53:14,025 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:53:14,026 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:53:14,026 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 15:53:14,026 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:53:14,027 INFO ]: With dead ends: 17 [2018-06-22 15:53:14,027 INFO ]: Without dead ends: 17 [2018-06-22 15:53:14,027 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2018-06-22 15:53:14,027 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 15:53:14,030 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 15:53:14,030 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 15:53:14,031 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 15:53:14,031 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 15:53:14,031 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:53:14,031 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 15:53:14,031 INFO ]: Interpolant automaton has 12 states. [2018-06-22 15:53:14,031 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 15:53:14,031 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 15:53:14,031 INFO ]: Found error trace [2018-06-22 15:53:14,031 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:53:14,032 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:53:14,032 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 15:53:14,032 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:53:14,032 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:53:14,033 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:14,033 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:53:14,033 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:14,077 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:14,260 INFO ]: Checked inductivity of 21 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 15:53:14,260 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:53:14,260 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 15:53:14,276 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 15:53:14,350 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 15:53:14,350 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:14,355 INFO ]: Computing forward predicates... [2018-06-22 15:53:14,690 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:53:14,709 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:53:14,709 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2018-06-22 15:53:14,710 INFO ]: Interpolant automaton has 15 states [2018-06-22 15:53:14,710 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 15:53:14,710 INFO ]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2018-06-22 15:53:14,710 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 15 states. [2018-06-22 15:53:14,860 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:53:14,860 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:53:14,861 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:53:14,861 INFO ]: Start accepts. Automaton has 15 states. Word has length 21 [2018-06-22 15:53:14,861 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:53:14,861 INFO ]: With dead ends: 13 [2018-06-22 15:53:14,861 INFO ]: Without dead ends: 0 [2018-06-22 15:53:14,861 INFO ]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2018-06-22 15:53:14,861 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 15:53:14,862 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 15:53:14,862 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 15:53:14,862 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 15:53:14,862 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 15:53:14,862 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:53:14,862 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 15:53:14,862 INFO ]: Interpolant automaton has 15 states. [2018-06-22 15:53:14,862 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 15:53:14,862 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 15:53:14,867 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:53:14 BoogieIcfgContainer [2018-06-22 15:53:14,867 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 15:53:14,868 INFO ]: Toolchain (without parser) took 6901.25 ms. Allocated memory was 308.3 MB in the beginning and 366.5 MB in the end (delta: 58.2 MB). Free memory was 256.8 MB in the beginning and 190.8 MB in the end (delta: 66.0 MB). Peak memory consumption was 124.2 MB. Max. memory is 3.6 GB. [2018-06-22 15:53:14,868 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.3 MB. Free memory is still 273.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:53:14,868 INFO ]: ChcToBoogie took 93.19 ms. Allocated memory is still 308.3 MB. Free memory was 256.8 MB in the beginning and 254.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:53:14,869 INFO ]: Boogie Preprocessor took 86.74 ms. Allocated memory is still 308.3 MB. Free memory was 254.8 MB in the beginning and 252.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:53:14,869 INFO ]: RCFGBuilder took 230.97 ms. Allocated memory is still 308.3 MB. Free memory was 252.8 MB in the beginning and 237.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:53:14,869 INFO ]: TraceAbstraction took 6482.69 ms. Allocated memory was 308.3 MB in the beginning and 366.5 MB in the end (delta: 58.2 MB). Free memory was 236.8 MB in the beginning and 190.8 MB in the end (delta: 46.0 MB). Peak memory consumption was 104.2 MB. Max. memory is 3.6 GB. [2018-06-22 15:53:14,872 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.3 MB. Free memory is still 273.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 93.19 ms. Allocated memory is still 308.3 MB. Free memory was 256.8 MB in the beginning and 254.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 86.74 ms. Allocated memory is still 308.3 MB. Free memory was 254.8 MB in the beginning and 252.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 230.97 ms. Allocated memory is still 308.3 MB. Free memory was 252.8 MB in the beginning and 237.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 6482.69 ms. Allocated memory was 308.3 MB in the beginning and 366.5 MB in the end (delta: 58.2 MB). Free memory was 236.8 MB in the beginning and 190.8 MB in the end (delta: 46.0 MB). Peak memory consumption was 104.2 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, 6.4s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 SDtfs, 30 SDslu, 131 SDs, 0 SdLazy, 112 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.9s 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, 0.3s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 8532 SizeOfPredicates, 88 NumberOfNonLiveVariables, 1071 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 23/68 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_3_e8_33_e2_1010.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_15-53-14-880.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_3_e8_33_e2_1010.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_15-53-14-880.csv Received shutdown request...