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.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 15:53:17,566 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 15:53:17,569 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 15:53:17,581 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 15:53:17,581 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 15:53:17,582 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 15:53:17,585 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 15:53:17,587 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 15:53:17,590 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 15:53:17,591 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 15:53:17,591 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 15:53:17,591 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 15:53:17,592 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 15:53:17,595 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 15:53:17,595 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 15:53:17,596 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 15:53:17,606 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 15:53:17,608 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 15:53:17,609 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 15:53:17,610 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 15:53:17,611 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 15:53:17,616 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 15:53:17,616 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 15:53:17,616 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 15:53:17,617 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 15:53:17,620 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 15:53:17,620 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 15:53:17,621 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 15:53:17,622 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 15:53:17,622 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 15:53:17,623 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 15:53:17,623 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 15:53:17,624 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 15:53:17,624 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 15:53:17,625 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 15:53:17,625 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 15:53:17,638 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 15:53:17,638 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 15:53:17,638 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 15:53:17,642 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 15:53:17,643 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 15:53:17,643 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 15:53:17,643 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 15:53:17,644 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 15:53:17,644 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 15:53:17,644 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 15:53:17,644 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:53:17,644 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 15:53:17,644 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 15:53:17,645 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 15:53:17,645 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 15:53:17,645 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 15:53:17,645 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 15:53:17,645 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 15:53:17,645 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 15:53:17,647 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 15:53:17,647 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 15:53:17,700 INFO ]: Repository-Root is: /tmp [2018-06-22 15:53:17,715 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 15:53:17,720 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 15:53:17,721 INFO ]: Initializing SmtParser... [2018-06-22 15:53:17,721 INFO ]: SmtParser initialized [2018-06-22 15:53:17,722 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_3_e8_33.smt2 [2018-06-22 15:53:17,723 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 15:53:17,806 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_3_e8_33.smt2 unknown [2018-06-22 15:53:18,149 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_3_e8_33.smt2 [2018-06-22 15:53:18,154 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 15:53:18,168 INFO ]: Walking toolchain with 4 elements. [2018-06-22 15:53:18,168 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 15:53:18,168 INFO ]: Initializing ChcToBoogie... [2018-06-22 15:53:18,168 INFO ]: ChcToBoogie initialized [2018-06-22 15:53:18,181 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:53:18" (1/1) ... [2018-06-22 15:53:18,241 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:18 Unit [2018-06-22 15:53:18,241 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 15:53:18,254 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 15:53:18,254 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 15:53:18,254 INFO ]: Boogie Preprocessor initialized [2018-06-22 15:53:18,295 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:18" (1/1) ... [2018-06-22 15:53:18,295 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:18" (1/1) ... [2018-06-22 15:53:18,313 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:18" (1/1) ... [2018-06-22 15:53:18,313 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:18" (1/1) ... [2018-06-22 15:53:18,326 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:18" (1/1) ... [2018-06-22 15:53:18,328 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:18" (1/1) ... [2018-06-22 15:53:18,329 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:18" (1/1) ... [2018-06-22 15:53:18,337 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 15:53:18,338 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 15:53:18,338 INFO ]: Initializing RCFGBuilder... [2018-06-22 15:53:18,338 INFO ]: RCFGBuilder initialized [2018-06-22 15:53:18,339 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:18" (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 15:53:18,354 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 15:53:18,354 INFO ]: Found specification of procedure False [2018-06-22 15:53:18,354 INFO ]: Found implementation of procedure False [2018-06-22 15:53:18,354 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 15:53:18,354 INFO ]: Found specification of procedure state [2018-06-22 15:53:18,354 INFO ]: Found implementation of procedure state [2018-06-22 15:53:18,354 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 15:53:18,354 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 15:53:18,354 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 15:53:18,569 INFO ]: Using library mode [2018-06-22 15:53:18,569 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:53:18 BoogieIcfgContainer [2018-06-22 15:53:18,569 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 15:53:18,571 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 15:53:18,571 INFO ]: Initializing TraceAbstraction... [2018-06-22 15:53:18,574 INFO ]: TraceAbstraction initialized [2018-06-22 15:53:18,574 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:53:18" (1/3) ... [2018-06-22 15:53:18,574 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625b0368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 03:53:18, skipping insertion in model container [2018-06-22 15:53:18,575 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:18" (2/3) ... [2018-06-22 15:53:18,575 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625b0368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:53:18, skipping insertion in model container [2018-06-22 15:53:18,575 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:53:18" (3/3) ... [2018-06-22 15:53:18,577 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 15:53:18,586 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 15:53:18,597 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 15:53:18,648 INFO ]: Using default assertion order modulation [2018-06-22 15:53:18,649 INFO ]: Interprodecural is true [2018-06-22 15:53:18,649 INFO ]: Hoare is false [2018-06-22 15:53:18,649 INFO ]: Compute interpolants for FPandBP [2018-06-22 15:53:18,649 INFO ]: Backedges is TWOTRACK [2018-06-22 15:53:18,649 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 15:53:18,649 INFO ]: Difference is false [2018-06-22 15:53:18,649 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 15:53:18,649 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 15:53:18,665 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 15:53:18,679 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 15:53:18,679 INFO ]: Found error trace [2018-06-22 15:53:18,680 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:53:18,680 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:53:18,685 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 15:53:18,687 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:53:18,687 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:53:18,735 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:18,736 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:53:18,736 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:18,819 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:18,992 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 15:53:18,993 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 15:53:18,994 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 15:53:18,995 INFO ]: Interpolant automaton has 4 states [2018-06-22 15:53:19,005 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 15:53:19,005 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:53:19,007 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 15:53:19,132 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:53:19,132 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:53:19,133 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 15:53:19,135 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 15:53:19,135 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:53:19,149 INFO ]: With dead ends: 13 [2018-06-22 15:53:19,149 INFO ]: Without dead ends: 13 [2018-06-22 15:53:19,151 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:53:19,170 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 15:53:19,193 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 15:53:19,194 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 15:53:19,194 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 15:53:19,196 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 15:53:19,196 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:53:19,196 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 15:53:19,196 INFO ]: Interpolant automaton has 4 states. [2018-06-22 15:53:19,196 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 15:53:19,197 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 15:53:19,197 INFO ]: Found error trace [2018-06-22 15:53:19,197 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:53:19,197 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:53:19,198 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 15:53:19,198 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:53:19,198 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:53:19,199 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:19,199 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:53:19,199 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:19,257 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:19,871 WARN ]: Spent 438.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 24 [2018-06-22 15:53:20,078 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:53:20,078 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:53:20,078 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 15:53:20,086 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:53:20,188 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:20,199 INFO ]: Computing forward predicates... [2018-06-22 15:53:21,035 WARN ]: Spent 554.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 17 [2018-06-22 15:53:21,220 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:53:21,241 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:53:21,242 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 15:53:21,242 INFO ]: Interpolant automaton has 9 states [2018-06-22 15:53:21,242 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 15:53:21,242 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 15:53:21,243 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 15:53:21,598 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:53:21,598 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 15:53:21,600 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:53:21,600 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 15:53:21,600 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:53:21,601 INFO ]: With dead ends: 15 [2018-06-22 15:53:21,601 INFO ]: Without dead ends: 15 [2018-06-22 15:53:21,602 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-06-22 15:53:21,602 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 15:53:21,604 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 15:53:21,604 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 15:53:21,605 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 15:53:21,605 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 15:53:21,605 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:53:21,605 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 15:53:21,605 INFO ]: Interpolant automaton has 9 states. [2018-06-22 15:53:21,605 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 15:53:21,606 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 15:53:21,606 INFO ]: Found error trace [2018-06-22 15:53:21,606 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:53:21,606 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:53:21,606 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 15:53:21,606 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:53:21,606 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:53:21,607 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:21,607 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:53:21,607 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:21,667 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:22,152 WARN ]: Spent 325.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 27 [2018-06-22 15:53:22,268 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2018-06-22 15:53:22,373 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:53:22,373 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:53:22,373 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) [2018-06-22 15:53:22,388 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:53:22,470 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:53:22,470 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:22,475 INFO ]: Computing forward predicates... [2018-06-22 15:53:23,274 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:53:23,306 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:53:23,306 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 15:53:23,307 INFO ]: Interpolant automaton has 13 states [2018-06-22 15:53:23,307 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 15:53:23,307 INFO ]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-06-22 15:53:23,307 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 15:53:23,582 WARN ]: Spent 197.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2018-06-22 15:53:23,849 WARN ]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2018-06-22 15:53:23,877 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:53:23,877 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:53:23,879 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:53:23,879 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 15:53:23,879 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:53:23,879 INFO ]: With dead ends: 17 [2018-06-22 15:53:23,879 INFO ]: Without dead ends: 17 [2018-06-22 15:53:23,880 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-06-22 15:53:23,880 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 15:53:23,883 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 15:53:23,883 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 15:53:23,883 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 15:53:23,883 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 15:53:23,883 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:53:23,883 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 15:53:23,883 INFO ]: Interpolant automaton has 13 states. [2018-06-22 15:53:23,883 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 15:53:23,884 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 15:53:23,884 INFO ]: Found error trace [2018-06-22 15:53:23,884 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:53:23,884 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:53:23,884 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 15:53:23,884 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:53:23,884 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:53:23,885 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:23,885 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:53:23,885 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:23,948 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:24,365 WARN ]: Spent 167.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2018-06-22 15:53:24,630 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:53:24,631 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:53:24,631 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 15:53:24,645 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 15:53:24,773 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 15:53:24,773 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:24,780 INFO ]: Computing forward predicates... [2018-06-22 15:53:25,148 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 15:53:25,187 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 15:53:25,272 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:53:25,273 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:53:25,290 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 15:53:25,338 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:53:25,340 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 15:53:25,434 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 15:53:25,673 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 15:53:26,838 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:53:26,840 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:53:26,845 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:53:26,846 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:53:30,960 WARN ]: Spent 801.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 52 [2018-06-22 15:53:31,330 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:53:31,353 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:53:31,353 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 15:53:31,353 INFO ]: Interpolant automaton has 17 states [2018-06-22 15:53:31,353 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 15:53:31,353 INFO ]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2018-06-22 15:53:31,354 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 15:53:32,091 WARN ]: Spent 653.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2018-06-22 15:53:32,477 WARN ]: Spent 347.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 67 [2018-06-22 15:53:33,055 WARN ]: Spent 538.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2018-06-22 15:53:33,627 WARN ]: Spent 540.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2018-06-22 15:53:33,663 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:53:33,663 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 15:53:33,663 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 15:53:33,663 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 15:53:33,663 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:53:33,664 INFO ]: With dead ends: 19 [2018-06-22 15:53:33,664 INFO ]: Without dead ends: 19 [2018-06-22 15:53:33,664 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2018-06-22 15:53:33,664 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 15:53:33,667 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 15:53:33,667 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 15:53:33,668 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 15:53:33,668 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 15:53:33,668 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:53:33,668 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 15:53:33,668 INFO ]: Interpolant automaton has 17 states. [2018-06-22 15:53:33,668 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 15:53:33,669 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 15:53:33,669 INFO ]: Found error trace [2018-06-22 15:53:33,669 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:53:33,669 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:53:33,669 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 15:53:33,669 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:53:33,669 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:53:33,670 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:33,670 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:53:33,670 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:53:33,764 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:34,289 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:53:34,289 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:53:34,289 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 [2018-06-22 15:53:34,296 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 15:53:34,391 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 15:53:34,391 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:53:34,397 INFO ]: Computing forward predicates... [2018-06-22 15:53:34,656 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:53:34,851 WARN ]: Spent 126.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2018-06-22 15:53:35,271 WARN ]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-06-22 15:53:35,305 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:53:35,324 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:53:35,325 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-06-22 15:53:35,325 INFO ]: Interpolant automaton has 21 states [2018-06-22 15:53:35,325 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 15:53:35,325 INFO ]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2018-06-22 15:53:35,325 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 21 states. [2018-06-22 15:53:35,954 WARN ]: Spent 568.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 84 [2018-06-22 15:53:36,647 WARN ]: Spent 583.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 89 [2018-06-22 15:53:37,294 WARN ]: Spent 549.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 87 [2018-06-22 15:53:38,158 WARN ]: Spent 818.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 86 [2018-06-22 15:53:38,692 WARN ]: Spent 486.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 81 [2018-06-22 15:53:38,775 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:53:38,775 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 15:53:38,776 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 15:53:38,776 INFO ]: Start accepts. Automaton has 21 states. Word has length 25 [2018-06-22 15:53:38,776 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:53:38,776 INFO ]: With dead ends: 15 [2018-06-22 15:53:38,776 INFO ]: Without dead ends: 0 [2018-06-22 15:53:38,776 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2018-06-22 15:53:38,776 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 15:53:38,777 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 15:53:38,777 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 15:53:38,777 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 15:53:38,777 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 15:53:38,777 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:53:38,777 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 15:53:38,777 INFO ]: Interpolant automaton has 21 states. [2018-06-22 15:53:38,777 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 15:53:38,777 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 15:53:38,782 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:53:38 BoogieIcfgContainer [2018-06-22 15:53:38,782 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 15:53:38,783 INFO ]: Toolchain (without parser) took 20628.67 ms. Allocated memory was 305.1 MB in the beginning and 585.6 MB in the end (delta: 280.5 MB). Free memory was 253.7 MB in the beginning and 404.3 MB in the end (delta: -150.6 MB). Peak memory consumption was 129.9 MB. Max. memory is 3.6 GB. [2018-06-22 15:53:38,784 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 305.1 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:53:38,784 INFO ]: ChcToBoogie took 73.36 ms. Allocated memory is still 305.1 MB. Free memory was 253.7 MB in the beginning and 251.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:53:38,784 INFO ]: Boogie Preprocessor took 83.24 ms. Allocated memory is still 305.1 MB. Free memory was 251.7 MB in the beginning and 249.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:53:38,785 INFO ]: RCFGBuilder took 231.67 ms. Allocated memory is still 305.1 MB. Free memory was 249.7 MB in the beginning and 233.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:53:38,785 INFO ]: TraceAbstraction took 20211.42 ms. Allocated memory was 305.1 MB in the beginning and 585.6 MB in the end (delta: 280.5 MB). Free memory was 233.7 MB in the beginning and 404.3 MB in the end (delta: -170.6 MB). Peak memory consumption was 109.9 MB. Max. memory is 3.6 GB. [2018-06-22 15:53:38,787 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 305.1 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 73.36 ms. Allocated memory is still 305.1 MB. Free memory was 253.7 MB in the beginning and 251.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 83.24 ms. Allocated memory is still 305.1 MB. Free memory was 251.7 MB in the beginning and 249.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 231.67 ms. Allocated memory is still 305.1 MB. Free memory was 249.7 MB in the beginning and 233.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 20211.42 ms. Allocated memory was 305.1 MB in the beginning and 585.6 MB in the end (delta: 280.5 MB). Free memory was 233.7 MB in the beginning and 404.3 MB in the end (delta: -170.6 MB). Peak memory consumption was 109.9 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, 20.1s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 6.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 80 SDslu, 233 SDs, 0 SdLazy, 196 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 10.9s 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, 12.2s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 45280 SizeOfPredicates, 182 NumberOfNonLiveVariables, 1684 ConjunctsInSsa, 258 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.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_15-53-38-797.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_3_e8_33.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_15-53-38-797.csv Received shutdown request...