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_all_e2_142_e8_194.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 16:04:40,590 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 16:04:40,592 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 16:04:40,605 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 16:04:40,605 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 16:04:40,606 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 16:04:40,609 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 16:04:40,611 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 16:04:40,612 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 16:04:40,613 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 16:04:40,614 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 16:04:40,615 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 16:04:40,616 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 16:04:40,616 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 16:04:40,617 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 16:04:40,620 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 16:04:40,621 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 16:04:40,632 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 16:04:40,633 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 16:04:40,634 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 16:04:40,635 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 16:04:40,637 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 16:04:40,637 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 16:04:40,642 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 16:04:40,643 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 16:04:40,644 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 16:04:40,645 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 16:04:40,645 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 16:04:40,646 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 16:04:40,647 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 16:04:40,647 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 16:04:40,651 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 16:04:40,652 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 16:04:40,653 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 16:04:40,653 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 16:04:40,653 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 16:04:40,673 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 16:04:40,673 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 16:04:40,674 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 16:04:40,674 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 16:04:40,675 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 16:04:40,675 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 16:04:40,675 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 16:04:40,676 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 16:04:40,676 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 16:04:40,676 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 16:04:40,676 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 16:04:40,676 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 16:04:40,676 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 16:04:40,677 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 16:04:40,677 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 16:04:40,677 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 16:04:40,678 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 16:04:40,678 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 16:04:40,678 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 16:04:40,679 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 16:04:40,679 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 16:04:40,722 INFO ]: Repository-Root is: /tmp [2018-06-22 16:04:40,738 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 16:04:40,741 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 16:04:40,742 INFO ]: Initializing SmtParser... [2018-06-22 16:04:40,743 INFO ]: SmtParser initialized [2018-06-22 16:04:40,743 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e2_142_e8_194.smt2 [2018-06-22 16:04:40,745 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 16:04:40,838 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e2_142_e8_194.smt2 unknown [2018-06-22 16:04:41,332 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e2_142_e8_194.smt2 [2018-06-22 16:04:41,336 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 16:04:41,352 INFO ]: Walking toolchain with 4 elements. [2018-06-22 16:04:41,352 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 16:04:41,352 INFO ]: Initializing ChcToBoogie... [2018-06-22 16:04:41,352 INFO ]: ChcToBoogie initialized [2018-06-22 16:04:41,355 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:04:41" (1/1) ... [2018-06-22 16:04:41,454 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:04:41 Unit [2018-06-22 16:04:41,512 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 16:04:41,513 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 16:04:41,513 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 16:04:41,513 INFO ]: Boogie Preprocessor initialized [2018-06-22 16:04:41,535 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:04:41" (1/1) ... [2018-06-22 16:04:41,535 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:04:41" (1/1) ... [2018-06-22 16:04:41,545 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:04:41" (1/1) ... [2018-06-22 16:04:41,545 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:04:41" (1/1) ... [2018-06-22 16:04:41,559 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:04:41" (1/1) ... [2018-06-22 16:04:41,560 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:04:41" (1/1) ... [2018-06-22 16:04:41,562 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:04:41" (1/1) ... [2018-06-22 16:04:41,565 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 16:04:41,566 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 16:04:41,566 INFO ]: Initializing RCFGBuilder... [2018-06-22 16:04:41,566 INFO ]: RCFGBuilder initialized [2018-06-22 16:04:41,566 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:04:41" (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 16:04:41,597 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 16:04:41,598 INFO ]: Found specification of procedure False [2018-06-22 16:04:41,598 INFO ]: Found implementation of procedure False [2018-06-22 16:04:41,598 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 16:04:41,598 INFO ]: Found specification of procedure state [2018-06-22 16:04:41,598 INFO ]: Found implementation of procedure state [2018-06-22 16:04:41,598 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 16:04:41,598 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 16:04:41,598 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 16:04:41,860 INFO ]: Using library mode [2018-06-22 16:04:41,860 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:04:41 BoogieIcfgContainer [2018-06-22 16:04:41,860 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 16:04:41,862 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 16:04:41,862 INFO ]: Initializing TraceAbstraction... [2018-06-22 16:04:41,865 INFO ]: TraceAbstraction initialized [2018-06-22 16:04:41,865 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:04:41" (1/3) ... [2018-06-22 16:04:41,866 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284ee733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:04:41, skipping insertion in model container [2018-06-22 16:04:41,866 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:04:41" (2/3) ... [2018-06-22 16:04:41,866 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284ee733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:04:41, skipping insertion in model container [2018-06-22 16:04:41,866 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:04:41" (3/3) ... [2018-06-22 16:04:41,868 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 16:04:41,878 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 16:04:41,888 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 16:04:41,925 INFO ]: Using default assertion order modulation [2018-06-22 16:04:41,926 INFO ]: Interprodecural is true [2018-06-22 16:04:41,926 INFO ]: Hoare is false [2018-06-22 16:04:41,926 INFO ]: Compute interpolants for FPandBP [2018-06-22 16:04:41,926 INFO ]: Backedges is TWOTRACK [2018-06-22 16:04:41,926 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 16:04:41,926 INFO ]: Difference is false [2018-06-22 16:04:41,926 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 16:04:41,926 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 16:04:41,940 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 16:04:41,951 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 16:04:41,951 INFO ]: Found error trace [2018-06-22 16:04:41,952 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:04:41,952 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:04:41,956 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 16:04:41,957 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:04:41,957 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:04:41,990 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:04:41,990 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:04:41,990 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:04:42,067 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:04:42,326 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 16:04:42,328 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 16:04:42,328 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 16:04:42,330 INFO ]: Interpolant automaton has 4 states [2018-06-22 16:04:42,340 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 16:04:42,341 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 16:04:42,343 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 16:04:42,453 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:04:42,453 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 16:04:42,454 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 16:04:42,455 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 16:04:42,455 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:04:42,465 INFO ]: With dead ends: 13 [2018-06-22 16:04:42,465 INFO ]: Without dead ends: 13 [2018-06-22 16:04:42,466 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 16:04:42,479 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 16:04:42,500 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 16:04:42,505 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 16:04:42,505 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 16:04:42,507 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 16:04:42,507 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:04:42,507 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 16:04:42,507 INFO ]: Interpolant automaton has 4 states. [2018-06-22 16:04:42,507 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 16:04:42,508 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 16:04:42,508 INFO ]: Found error trace [2018-06-22 16:04:42,508 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:04:42,509 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:04:42,509 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 16:04:42,509 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:04:42,509 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:04:42,510 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:04:42,510 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:04:42,510 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:04:42,605 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:04:44,121 WARN ]: Spent 1.28 s on a formula simplification. DAG size of input: 107 DAG size of output: 60 [2018-06-22 16:04:44,387 WARN ]: Spent 185.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-06-22 16:04:44,407 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 16:04:44,407 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:04:44,407 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 16:04:44,414 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:04:44,484 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:04:44,495 INFO ]: Computing forward predicates... [2018-06-22 16:04:45,199 WARN ]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-06-22 16:04:45,520 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 16:04:45,542 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:04:45,542 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 16:04:45,543 INFO ]: Interpolant automaton has 9 states [2018-06-22 16:04:45,543 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 16:04:45,543 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 16:04:45,543 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 16:04:45,736 WARN ]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-06-22 16:04:45,975 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:04:45,975 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 16:04:45,976 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 16:04:45,976 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 16:04:45,976 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:04:45,977 INFO ]: With dead ends: 15 [2018-06-22 16:04:45,977 INFO ]: Without dead ends: 15 [2018-06-22 16:04:45,978 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-06-22 16:04:45,978 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 16:04:45,980 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 16:04:45,981 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 16:04:45,981 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 16:04:45,981 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 16:04:45,981 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:04:45,981 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 16:04:45,981 INFO ]: Interpolant automaton has 9 states. [2018-06-22 16:04:45,982 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 16:04:45,982 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 16:04:45,982 INFO ]: Found error trace [2018-06-22 16:04:45,982 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:04:45,982 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:04:45,983 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 16:04:45,983 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:04:45,983 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:04:45,983 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:04:45,983 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:04:45,983 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:04:46,051 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:04:46,393 WARN ]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2018-06-22 16:04:46,846 WARN ]: Spent 429.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2018-06-22 16:04:46,969 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 16:04:46,969 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:04:46,969 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 16:04:46,985 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 16:04:47,090 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 16:04:47,090 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:04:47,097 INFO ]: Computing forward predicates... [2018-06-22 16:04:48,449 WARN ]: Spent 278.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 23 [2018-06-22 16:04:50,758 WARN ]: Spent 1.63 s on a formula simplification. DAG size of input: 85 DAG size of output: 46 [2018-06-22 16:04:50,922 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 16:04:50,946 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:04:50,947 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 16:04:50,947 INFO ]: Interpolant automaton has 13 states [2018-06-22 16:04:50,947 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 16:04:50,947 INFO ]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-06-22 16:04:50,947 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 16:04:51,574 WARN ]: Spent 589.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 138 [2018-06-22 16:04:52,039 WARN ]: Spent 381.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 82 [2018-06-22 16:04:52,438 WARN ]: Spent 369.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2018-06-22 16:04:52,486 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:04:52,486 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 16:04:52,487 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 16:04:52,487 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 16:04:52,488 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:04:52,488 INFO ]: With dead ends: 17 [2018-06-22 16:04:52,488 INFO ]: Without dead ends: 17 [2018-06-22 16:04:52,488 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-06-22 16:04:52,488 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 16:04:52,491 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 16:04:52,491 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 16:04:52,492 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 16:04:52,492 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 16:04:52,492 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:04:52,492 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 16:04:52,492 INFO ]: Interpolant automaton has 13 states. [2018-06-22 16:04:52,492 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 16:04:52,492 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 16:04:52,493 INFO ]: Found error trace [2018-06-22 16:04:52,493 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:04:52,493 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:04:52,493 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 16:04:52,493 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:04:52,493 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:04:52,494 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:04:52,494 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:04:52,494 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:04:52,577 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:04:53,374 WARN ]: Spent 461.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 93 [2018-06-22 16:04:53,877 WARN ]: Spent 492.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2018-06-22 16:04:54,171 WARN ]: Spent 245.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2018-06-22 16:04:54,514 WARN ]: Spent 163.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2018-06-22 16:04:54,552 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 16:04:54,552 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:04:54,553 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 16:04:54,559 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 16:04:54,649 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 16:04:54,649 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:04:54,656 INFO ]: Computing forward predicates... [2018-06-22 16:04:55,576 WARN ]: Spent 286.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 36 [2018-06-22 16:04:55,789 WARN ]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2018-06-22 16:04:56,278 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2018-06-22 16:04:56,638 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 16:04:56,662 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:04:56,662 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 16:04:56,663 INFO ]: Interpolant automaton has 17 states [2018-06-22 16:04:56,663 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 16:04:56,663 INFO ]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2018-06-22 16:04:56,663 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 16:04:57,748 WARN ]: Spent 979.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 191 [2018-06-22 16:04:58,661 WARN ]: Spent 731.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 117 [2018-06-22 16:04:59,434 WARN ]: Spent 715.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 111 [2018-06-22 16:05:00,333 WARN ]: Spent 716.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 133 [2018-06-22 16:05:00,391 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:05:00,391 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 16:05:00,393 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 16:05:00,393 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 16:05:00,393 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:05:00,393 INFO ]: With dead ends: 19 [2018-06-22 16:05:00,393 INFO ]: Without dead ends: 19 [2018-06-22 16:05:00,394 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2018-06-22 16:05:00,394 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 16:05:00,396 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 16:05:00,397 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 16:05:00,397 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 16:05:00,397 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 16:05:00,397 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:05:00,397 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 16:05:00,397 INFO ]: Interpolant automaton has 17 states. [2018-06-22 16:05:00,397 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 16:05:00,398 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 16:05:00,398 INFO ]: Found error trace [2018-06-22 16:05:00,398 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:05:00,398 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:05:00,398 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 16:05:00,398 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:05:00,398 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:05:00,399 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:05:00,399 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:05:00,399 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:05:00,481 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:05:01,185 WARN ]: Spent 394.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2018-06-22 16:05:01,322 WARN ]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2018-06-22 16:05:01,597 WARN ]: Spent 213.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2018-06-22 16:05:01,939 WARN ]: Spent 303.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2018-06-22 16:05:02,241 WARN ]: Spent 162.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2018-06-22 16:05:02,410 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 30 [2018-06-22 16:05:02,633 WARN ]: Spent 195.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2018-06-22 16:05:02,833 WARN ]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2018-06-22 16:05:02,884 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 16:05:02,884 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:05:02,884 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 16:05:02,891 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 16:05:03,009 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 16:05:03,009 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:05:03,025 INFO ]: Computing forward predicates... [2018-06-22 16:05:04,124 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2018-06-22 16:05:08,034 WARN ]: Spent 255.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2018-06-22 16:05:08,097 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:05:08,124 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:05:08,126 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:05:12,077 WARN ]: Spent 1.41 s on a formula simplification. DAG size of input: 206 DAG size of output: 59 [2018-06-22 16:05:12,314 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2018-06-22 16:05:12,637 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 16:05:12,658 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:05:12,658 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-06-22 16:05:12,658 INFO ]: Interpolant automaton has 21 states [2018-06-22 16:05:12,658 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 16:05:12,659 INFO ]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2018-06-22 16:05:12,659 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 21 states. [2018-06-22 16:05:14,031 WARN ]: Spent 1.29 s on a formula simplification. DAG size of input: 221 DAG size of output: 155 [2018-06-22 16:05:14,554 WARN ]: Spent 407.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 89 [2018-06-22 16:05:15,193 WARN ]: Spent 586.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 108 [2018-06-22 16:05:15,937 WARN ]: Spent 672.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 129 [2018-06-22 16:05:17,005 WARN ]: Spent 834.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 130 [2018-06-22 16:05:17,074 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:05:17,074 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 16:05:17,075 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 16:05:17,075 INFO ]: Start accepts. Automaton has 21 states. Word has length 25 [2018-06-22 16:05:17,075 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:05:17,076 INFO ]: With dead ends: 21 [2018-06-22 16:05:17,076 INFO ]: Without dead ends: 21 [2018-06-22 16:05:17,076 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2018-06-22 16:05:17,076 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 16:05:17,079 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 16:05:17,079 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 16:05:17,080 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 16:05:17,080 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 16:05:17,080 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:05:17,080 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 16:05:17,080 INFO ]: Interpolant automaton has 21 states. [2018-06-22 16:05:17,080 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 16:05:17,081 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 16:05:17,081 INFO ]: Found error trace [2018-06-22 16:05:17,081 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:05:17,081 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:05:17,081 INFO ]: Analyzing trace with hash 1986427350, now seen corresponding path program 5 times [2018-06-22 16:05:17,081 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:05:17,081 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:05:17,082 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:05:17,082 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:05:17,082 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:05:17,172 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:05:19,702 WARN ]: Spent 2.06 s on a formula simplification. DAG size of input: 183 DAG size of output: 91 [2018-06-22 16:05:19,935 WARN ]: Spent 223.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2018-06-22 16:05:20,284 WARN ]: Spent 331.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 77 [2018-06-22 16:05:20,585 WARN ]: Spent 285.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2018-06-22 16:05:20,829 WARN ]: Spent 223.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 98 [2018-06-22 16:05:21,181 WARN ]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2018-06-22 16:05:21,488 WARN ]: Spent 272.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2018-06-22 16:05:21,764 WARN ]: Spent 235.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 45 [2018-06-22 16:05:21,885 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 16:05:21,885 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:05:21,885 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 16:05:21,891 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 16:05:22,009 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 16:05:22,009 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:05:22,017 INFO ]: Computing forward predicates... [2018-06-22 16:05:23,761 WARN ]: Spent 546.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 43 [2018-06-22 16:05:23,773 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:05:31,583 WARN ]: Spent 5.21 s on a formula simplification. DAG size of input: 451 DAG size of output: 77 [2018-06-22 16:05:32,058 WARN ]: Spent 243.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 38 [2018-06-22 16:05:34,064 WARN ]: Spent 865.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 46 [2018-06-22 16:05:34,503 WARN ]: Spent 144.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2018-06-22 16:05:35,506 WARN ]: Spent 326.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 41 [2018-06-22 16:05:35,584 INFO ]: Checked inductivity of 55 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 16:05:35,605 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:05:35,605 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2018-06-22 16:05:35,605 INFO ]: Interpolant automaton has 25 states [2018-06-22 16:05:35,605 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-22 16:05:35,605 INFO ]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2018-06-22 16:05:35,606 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 25 states. [2018-06-22 16:05:39,230 WARN ]: Spent 3.52 s on a formula simplification. DAG size of input: 333 DAG size of output: 198 [2018-06-22 16:05:40,552 WARN ]: Spent 1.08 s on a formula simplification. DAG size of input: 399 DAG size of output: 103 [2018-06-22 16:05:41,756 WARN ]: Spent 1.11 s on a formula simplification. DAG size of input: 386 DAG size of output: 112 Received shutdown request... [2018-06-22 16:05:42,323 WARN ]: Removed 15 from assertion stack [2018-06-22 16:05:42,324 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 16:05:42,324 WARN ]: Verification canceled [2018-06-22 16:05:42,327 WARN ]: Timeout [2018-06-22 16:05:42,327 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:05:42 BoogieIcfgContainer [2018-06-22 16:05:42,327 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 16:05:42,328 INFO ]: Toolchain (without parser) took 60991.13 ms. Allocated memory was 305.1 MB in the beginning and 1.1 GB in the end (delta: 771.8 MB). Free memory was 253.5 MB in the beginning and 643.3 MB in the end (delta: -389.7 MB). Peak memory consumption was 382.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:05:42,329 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 305.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 16:05:42,329 INFO ]: ChcToBoogie took 160.73 ms. Allocated memory is still 305.1 MB. Free memory was 253.5 MB in the beginning and 251.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:05:42,329 INFO ]: Boogie Preprocessor took 51.80 ms. Allocated memory is still 305.1 MB. Free memory was 251.5 MB in the beginning and 249.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:05:42,330 INFO ]: RCFGBuilder took 294.67 ms. Allocated memory is still 305.1 MB. Free memory was 249.6 MB in the beginning and 233.6 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:05:42,330 INFO ]: TraceAbstraction took 60465.49 ms. Allocated memory was 305.1 MB in the beginning and 1.1 GB in the end (delta: 771.8 MB). Free memory was 233.6 MB in the beginning and 643.3 MB in the end (delta: -409.7 MB). Peak memory consumption was 362.1 MB. Max. memory is 3.6 GB. [2018-06-22 16:05:42,332 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 305.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 160.73 ms. Allocated memory is still 305.1 MB. Free memory was 253.5 MB in the beginning and 251.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 51.80 ms. Allocated memory is still 305.1 MB. Free memory was 251.5 MB in the beginning and 249.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 294.67 ms. Allocated memory is still 305.1 MB. Free memory was 249.6 MB in the beginning and 233.6 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 60465.49 ms. Allocated memory was 305.1 MB in the beginning and 1.1 GB in the end (delta: 771.8 MB). Free memory was 233.6 MB in the beginning and 643.3 MB in the end (delta: -409.7 MB). Peak memory consumption was 362.1 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was constructing difference of abstraction (21states) and interpolant automaton (currently 7 states, 25 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 352. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 60.4s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 16.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 102 SDslu, 373 SDs, 0 SdLazy, 316 SolverSat, 145 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 40.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=5, 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, 0.8s SatisfiabilityAnalysisTime, 42.1s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 225440 SizeOfPredicates, 322 NumberOfNonLiveVariables, 2425 ConjunctsInSsa, 592 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 71/250 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_all_e2_142_e8_194.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_16-05-42-341.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_all_e2_142_e8_194.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_16-05-42-341.csv Completed graceful shutdown