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/cd_e7_621_e8_714.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 16:08:47,698 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 16:08:47,701 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 16:08:47,712 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 16:08:47,712 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 16:08:47,713 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 16:08:47,717 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 16:08:47,720 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 16:08:47,721 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 16:08:47,722 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 16:08:47,723 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 16:08:47,724 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 16:08:47,724 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 16:08:47,726 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 16:08:47,726 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 16:08:47,727 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 16:08:47,729 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 16:08:47,732 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 16:08:47,734 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 16:08:47,735 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 16:08:47,736 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 16:08:47,739 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 16:08:47,739 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 16:08:47,739 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 16:08:47,740 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 16:08:47,741 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 16:08:47,742 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 16:08:47,742 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 16:08:47,743 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 16:08:47,744 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 16:08:47,744 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 16:08:47,745 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 16:08:47,745 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 16:08:47,746 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 16:08:47,747 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 16:08:47,747 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 16:08:47,760 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 16:08:47,761 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 16:08:47,761 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 16:08:47,761 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 16:08:47,762 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 16:08:47,762 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 16:08:47,763 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 16:08:47,763 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 16:08:47,763 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 16:08:47,763 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 16:08:47,764 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 16:08:47,764 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 16:08:47,764 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 16:08:47,764 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 16:08:47,765 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 16:08:47,765 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 16:08:47,765 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 16:08:47,765 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 16:08:47,765 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 16:08:47,767 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 16:08:47,767 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 16:08:47,812 INFO ]: Repository-Root is: /tmp [2018-06-22 16:08:47,827 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 16:08:47,831 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 16:08:47,832 INFO ]: Initializing SmtParser... [2018-06-22 16:08:47,832 INFO ]: SmtParser initialized [2018-06-22 16:08:47,833 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/cd_e7_621_e8_714.smt2 [2018-06-22 16:08:47,834 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 16:08:47,923 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/cd_e7_621_e8_714.smt2 unknown [2018-06-22 16:08:48,186 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/cd_e7_621_e8_714.smt2 [2018-06-22 16:08:48,192 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 16:08:48,198 INFO ]: Walking toolchain with 4 elements. [2018-06-22 16:08:48,199 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 16:08:48,199 INFO ]: Initializing ChcToBoogie... [2018-06-22 16:08:48,199 INFO ]: ChcToBoogie initialized [2018-06-22 16:08:48,204 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:08:48" (1/1) ... [2018-06-22 16:08:48,254 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:08:48 Unit [2018-06-22 16:08:48,254 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 16:08:48,255 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 16:08:48,255 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 16:08:48,255 INFO ]: Boogie Preprocessor initialized [2018-06-22 16:08:48,278 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:08:48" (1/1) ... [2018-06-22 16:08:48,278 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:08:48" (1/1) ... [2018-06-22 16:08:48,287 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:08:48" (1/1) ... [2018-06-22 16:08:48,287 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:08:48" (1/1) ... [2018-06-22 16:08:48,298 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:08:48" (1/1) ... [2018-06-22 16:08:48,299 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:08:48" (1/1) ... [2018-06-22 16:08:48,300 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:08:48" (1/1) ... [2018-06-22 16:08:48,308 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 16:08:48,309 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 16:08:48,309 INFO ]: Initializing RCFGBuilder... [2018-06-22 16:08:48,309 INFO ]: RCFGBuilder initialized [2018-06-22 16:08:48,310 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:08:48" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 16:08:48,329 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 16:08:48,329 INFO ]: Found specification of procedure False [2018-06-22 16:08:48,329 INFO ]: Found implementation of procedure False [2018-06-22 16:08:48,329 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 16:08:48,329 INFO ]: Found specification of procedure state [2018-06-22 16:08:48,329 INFO ]: Found implementation of procedure state [2018-06-22 16:08:48,329 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 16:08:48,329 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 16:08:48,329 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 16:08:48,695 INFO ]: Using library mode [2018-06-22 16:08:48,696 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:08:48 BoogieIcfgContainer [2018-06-22 16:08:48,696 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 16:08:48,700 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 16:08:48,700 INFO ]: Initializing TraceAbstraction... [2018-06-22 16:08:48,703 INFO ]: TraceAbstraction initialized [2018-06-22 16:08:48,703 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:08:48" (1/3) ... [2018-06-22 16:08:48,707 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6837e98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:08:48, skipping insertion in model container [2018-06-22 16:08:48,707 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:08:48" (2/3) ... [2018-06-22 16:08:48,707 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6837e98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:08:48, skipping insertion in model container [2018-06-22 16:08:48,707 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:08:48" (3/3) ... [2018-06-22 16:08:48,709 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 16:08:48,718 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 16:08:48,728 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 16:08:48,775 INFO ]: Using default assertion order modulation [2018-06-22 16:08:48,776 INFO ]: Interprodecural is true [2018-06-22 16:08:48,776 INFO ]: Hoare is false [2018-06-22 16:08:48,776 INFO ]: Compute interpolants for FPandBP [2018-06-22 16:08:48,776 INFO ]: Backedges is TWOTRACK [2018-06-22 16:08:48,776 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 16:08:48,776 INFO ]: Difference is false [2018-06-22 16:08:48,776 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 16:08:48,776 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 16:08:48,792 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 16:08:48,803 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 16:08:48,803 INFO ]: Found error trace [2018-06-22 16:08:48,805 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:08:48,805 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:08:48,810 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 16:08:48,812 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:08:48,813 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:08:48,855 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:48,855 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:08:48,855 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:48,915 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:49,064 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 16:08:49,067 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 16:08:49,067 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 16:08:49,068 INFO ]: Interpolant automaton has 4 states [2018-06-22 16:08:49,082 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 16:08:49,083 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 16:08:49,085 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 16:08:49,211 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:08:49,211 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 16:08:49,212 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 16:08:49,213 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 16:08:49,214 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:08:49,228 INFO ]: With dead ends: 13 [2018-06-22 16:08:49,229 INFO ]: Without dead ends: 13 [2018-06-22 16:08:49,232 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 16:08:49,251 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 16:08:49,288 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 16:08:49,289 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 16:08:49,290 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 16:08:49,291 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 16:08:49,291 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:08:49,291 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 16:08:49,291 INFO ]: Interpolant automaton has 4 states. [2018-06-22 16:08:49,291 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 16:08:49,292 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 16:08:49,292 INFO ]: Found error trace [2018-06-22 16:08:49,292 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:08:49,292 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:08:49,293 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 16:08:49,293 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:08:49,293 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:08:49,294 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:49,294 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:08:49,294 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:49,368 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:49,619 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 16:08:49,619 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:08:49,619 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 16:08:49,629 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:08:49,711 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:49,720 INFO ]: Computing forward predicates... [2018-06-22 16:08:50,174 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 16:08:50,194 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:08:50,195 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 16:08:50,195 INFO ]: Interpolant automaton has 8 states [2018-06-22 16:08:50,195 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 16:08:50,195 INFO ]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-06-22 16:08:50,196 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 16:08:50,505 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:08:50,505 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 16:08:50,507 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 16:08:50,507 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 16:08:50,508 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:08:50,508 INFO ]: With dead ends: 15 [2018-06-22 16:08:50,508 INFO ]: Without dead ends: 15 [2018-06-22 16:08:50,509 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-06-22 16:08:50,509 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 16:08:50,511 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 16:08:50,511 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 16:08:50,514 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 16:08:50,514 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 16:08:50,514 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:08:50,514 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 16:08:50,515 INFO ]: Interpolant automaton has 8 states. [2018-06-22 16:08:50,515 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 16:08:50,515 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 16:08:50,515 INFO ]: Found error trace [2018-06-22 16:08:50,515 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:08:50,515 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:08:50,516 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 16:08:50,516 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:08:50,516 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:08:50,516 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:50,516 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:08:50,516 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:50,630 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:51,157 WARN ]: Spent 330.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2018-06-22 16:08:51,238 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 16:08:51,238 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:08:51,238 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 16:08:51,247 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 16:08:51,321 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 16:08:51,321 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:51,324 INFO ]: Computing forward predicates... [2018-06-22 16:08:51,461 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 16:08:51,481 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:08:51,481 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 16:08:51,481 INFO ]: Interpolant automaton has 12 states [2018-06-22 16:08:51,482 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 16:08:51,482 INFO ]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-06-22 16:08:51,482 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 16:08:51,735 WARN ]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-06-22 16:08:52,194 WARN ]: Spent 402.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2018-06-22 16:08:52,320 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:08:52,320 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 16:08:52,320 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 16:08:52,321 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 16:08:52,321 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:08:52,321 INFO ]: With dead ends: 17 [2018-06-22 16:08:52,321 INFO ]: Without dead ends: 17 [2018-06-22 16:08:52,322 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-06-22 16:08:52,322 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 16:08:52,325 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 16:08:52,325 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 16:08:52,326 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 16:08:52,326 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 16:08:52,326 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:08:52,326 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 16:08:52,326 INFO ]: Interpolant automaton has 12 states. [2018-06-22 16:08:52,326 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 16:08:52,326 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 16:08:52,327 INFO ]: Found error trace [2018-06-22 16:08:52,327 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:08:52,327 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:08:52,327 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 16:08:52,327 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:08:52,327 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:08:52,328 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:52,328 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:08:52,328 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:52,366 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:52,642 WARN ]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 16:08:52,925 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 16:08:52,925 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:08:52,948 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 16:08:52,957 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 16:08:53,003 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 16:08:53,003 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:53,007 INFO ]: Computing forward predicates... [2018-06-22 16:08:53,510 WARN ]: Spent 173.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 15 [2018-06-22 16:08:53,843 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 16:08:53,874 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:08:53,874 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2018-06-22 16:08:53,874 INFO ]: Interpolant automaton has 15 states [2018-06-22 16:08:53,874 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 16:08:53,874 INFO ]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-06-22 16:08:53,875 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 15 states. [2018-06-22 16:08:54,207 WARN ]: Spent 155.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2018-06-22 16:08:54,503 WARN ]: Spent 253.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-06-22 16:08:54,708 WARN ]: Spent 183.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-06-22 16:08:54,736 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:08:54,736 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 16:08:54,737 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 16:08:54,737 INFO ]: Start accepts. Automaton has 15 states. Word has length 21 [2018-06-22 16:08:54,737 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:08:54,738 INFO ]: With dead ends: 19 [2018-06-22 16:08:54,738 INFO ]: Without dead ends: 19 [2018-06-22 16:08:54,738 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-06-22 16:08:54,738 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 16:08:54,741 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 16:08:54,741 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 16:08:54,742 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 16:08:54,742 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 16:08:54,742 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:08:54,742 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 16:08:54,742 INFO ]: Interpolant automaton has 15 states. [2018-06-22 16:08:54,742 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 16:08:54,743 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 16:08:54,743 INFO ]: Found error trace [2018-06-22 16:08:54,743 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:08:54,743 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:08:54,743 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 16:08:54,743 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:08:54,743 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:08:54,744 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:54,744 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:08:54,744 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:54,791 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:55,136 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 16:08:55,136 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:08:55,136 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 16:08:55,143 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 16:08:55,205 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 16:08:55,205 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:55,208 INFO ]: Computing forward predicates... [2018-06-22 16:08:55,482 INFO ]: Checked inductivity of 36 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-06-22 16:08:55,502 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:08:55,502 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2018-06-22 16:08:55,502 INFO ]: Interpolant automaton has 18 states [2018-06-22 16:08:55,502 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 16:08:55,502 INFO ]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2018-06-22 16:08:55,502 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 18 states. [2018-06-22 16:08:55,760 WARN ]: Spent 212.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2018-06-22 16:08:55,957 WARN ]: Spent 154.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2018-06-22 16:08:56,160 WARN ]: Spent 166.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2018-06-22 16:08:56,302 WARN ]: Spent 114.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2018-06-22 16:08:56,439 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-06-22 16:08:56,479 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:08:56,479 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 16:08:56,480 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 16:08:56,480 INFO ]: Start accepts. Automaton has 18 states. Word has length 25 [2018-06-22 16:08:56,480 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:08:56,481 INFO ]: With dead ends: 21 [2018-06-22 16:08:56,481 INFO ]: Without dead ends: 21 [2018-06-22 16:08:56,482 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2018-06-22 16:08:56,482 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 16:08:56,487 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 16:08:56,488 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 16:08:56,488 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 16:08:56,488 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 16:08:56,488 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:08:56,489 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 16:08:56,489 INFO ]: Interpolant automaton has 18 states. [2018-06-22 16:08:56,489 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 16:08:56,489 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 16:08:56,489 INFO ]: Found error trace [2018-06-22 16:08:56,489 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:08:56,490 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:08:56,491 INFO ]: Analyzing trace with hash 1986427350, now seen corresponding path program 5 times [2018-06-22 16:08:56,491 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:08:56,491 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:08:56,491 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:56,491 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:08:56,491 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:56,554 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:56,885 INFO ]: Checked inductivity of 55 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 16:08:56,886 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:08:56,886 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 16:08:56,891 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 16:08:56,961 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 16:08:56,961 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:56,966 INFO ]: Computing forward predicates... [2018-06-22 16:08:57,348 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2018-06-22 16:08:57,863 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 16:08:57,883 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:08:57,883 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2018-06-22 16:08:57,883 INFO ]: Interpolant automaton has 23 states [2018-06-22 16:08:57,884 INFO ]: Constructing interpolant automaton starting with 23 interpolants. [2018-06-22 16:08:57,884 INFO ]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2018-06-22 16:08:57,884 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 23 states. [2018-06-22 16:08:58,173 WARN ]: Spent 246.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 93 [2018-06-22 16:08:58,619 WARN ]: Spent 381.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 102 [2018-06-22 16:08:59,040 WARN ]: Spent 359.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2018-06-22 16:08:59,307 WARN ]: Spent 233.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2018-06-22 16:08:59,625 WARN ]: Spent 279.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 93 [2018-06-22 16:08:59,889 WARN ]: Spent 223.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2018-06-22 16:09:00,068 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:09:00,068 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 16:09:00,069 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 16:09:00,069 INFO ]: Start accepts. Automaton has 23 states. Word has length 29 [2018-06-22 16:09:00,070 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:09:00,070 INFO ]: With dead ends: 23 [2018-06-22 16:09:00,070 INFO ]: Without dead ends: 23 [2018-06-22 16:09:00,071 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2018-06-22 16:09:00,071 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 16:09:00,074 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 16:09:00,074 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 16:09:00,075 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 16:09:00,075 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 29 [2018-06-22 16:09:00,075 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:09:00,075 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 16:09:00,075 INFO ]: Interpolant automaton has 23 states. [2018-06-22 16:09:00,075 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 16:09:00,076 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 16:09:00,076 INFO ]: Found error trace [2018-06-22 16:09:00,076 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:09:00,076 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:09:00,076 INFO ]: Analyzing trace with hash 800064122, now seen corresponding path program 6 times [2018-06-22 16:09:00,076 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:09:00,076 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:09:00,077 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:09:00,077 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:09:00,077 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:09:00,192 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:09:00,547 WARN ]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 16:09:00,915 WARN ]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-06-22 16:09:01,333 WARN ]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-06-22 16:09:01,771 WARN ]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-06-22 16:09:02,014 WARN ]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-06-22 16:09:02,224 WARN ]: Spent 200.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2018-06-22 16:09:02,365 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 16:09:02,365 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:09:02,365 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 16:09:02,379 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 16:09:02,458 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-06-22 16:09:02,458 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:09:02,464 INFO ]: Computing forward predicates... [2018-06-22 16:09:02,839 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:09:02,968 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:09:13,910 WARN ]: Spent 2.88 s on a formula simplification. DAG size of input: 411 DAG size of output: 42 [2018-06-22 16:09:14,066 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2018-06-22 16:09:16,514 WARN ]: Spent 281.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 6 [2018-06-22 16:09:17,457 WARN ]: Spent 295.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 6 [2018-06-22 16:09:17,782 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 16:09:17,814 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:09:17,814 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 27 [2018-06-22 16:09:17,814 INFO ]: Interpolant automaton has 27 states [2018-06-22 16:09:17,815 INFO ]: Constructing interpolant automaton starting with 27 interpolants. [2018-06-22 16:09:17,815 INFO ]: CoverageRelationStatistics Valid=61, Invalid=641, Unknown=0, NotChecked=0, Total=702 [2018-06-22 16:09:17,815 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 27 states. [2018-06-22 16:09:18,324 WARN ]: Spent 451.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 126 [2018-06-22 16:09:18,496 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-06-22 16:09:19,075 WARN ]: Spent 492.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 133 [2018-06-22 16:09:19,636 WARN ]: Spent 522.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 141 [2018-06-22 16:09:20,152 WARN ]: Spent 475.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 131 [2018-06-22 16:09:20,696 WARN ]: Spent 495.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 131 [2018-06-22 16:09:21,208 WARN ]: Spent 460.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 126 [2018-06-22 16:09:21,723 WARN ]: Spent 452.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 123 [2018-06-22 16:09:21,775 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:09:21,775 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-22 16:09:21,777 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 16:09:21,777 INFO ]: Start accepts. Automaton has 27 states. Word has length 33 [2018-06-22 16:09:21,777 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:09:21,778 INFO ]: With dead ends: 25 [2018-06-22 16:09:21,778 INFO ]: Without dead ends: 25 [2018-06-22 16:09:21,778 INFO ]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=220, Invalid=970, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 16:09:21,779 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 16:09:21,782 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 16:09:21,782 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 16:09:21,783 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-22 16:09:21,783 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 33 [2018-06-22 16:09:21,783 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:09:21,783 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-22 16:09:21,783 INFO ]: Interpolant automaton has 27 states. [2018-06-22 16:09:21,783 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-22 16:09:21,784 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 16:09:21,784 INFO ]: Found error trace [2018-06-22 16:09:21,784 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:09:21,784 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:09:21,784 INFO ]: Analyzing trace with hash -411423458, now seen corresponding path program 7 times [2018-06-22 16:09:21,784 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:09:21,784 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:09:21,785 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:09:21,785 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:09:21,785 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:09:21,871 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:09:22,281 INFO ]: Checked inductivity of 105 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-06-22 16:09:22,281 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:09:22,281 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 16:09:22,288 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:09:22,368 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:09:22,373 INFO ]: Computing forward predicates... [2018-06-22 16:09:22,650 INFO ]: Checked inductivity of 105 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-06-22 16:09:22,672 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:09:22,672 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 24 [2018-06-22 16:09:22,673 INFO ]: Interpolant automaton has 24 states [2018-06-22 16:09:22,673 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 16:09:22,673 INFO ]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2018-06-22 16:09:22,673 INFO ]: Start difference. First operand 25 states and 26 transitions. Second operand 24 states. [2018-06-22 16:09:23,424 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:09:23,424 INFO ]: Finished difference Result 27 states and 28 transitions. [2018-06-22 16:09:23,425 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 16:09:23,425 INFO ]: Start accepts. Automaton has 24 states. Word has length 37 [2018-06-22 16:09:23,425 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:09:23,426 INFO ]: With dead ends: 27 [2018-06-22 16:09:23,426 INFO ]: Without dead ends: 27 [2018-06-22 16:09:23,428 INFO ]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=245, Invalid=811, Unknown=0, NotChecked=0, Total=1056 [2018-06-22 16:09:23,428 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 16:09:23,431 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 16:09:23,431 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 16:09:23,433 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-06-22 16:09:23,433 INFO ]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 37 [2018-06-22 16:09:23,433 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:09:23,433 INFO ]: Abstraction has 27 states and 28 transitions. [2018-06-22 16:09:23,433 INFO ]: Interpolant automaton has 24 states. [2018-06-22 16:09:23,433 INFO ]: Start isEmpty. Operand 27 states and 28 transitions. [2018-06-22 16:09:23,434 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 16:09:23,434 INFO ]: Found error trace [2018-06-22 16:09:23,434 INFO ]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:09:23,434 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:09:23,434 INFO ]: Analyzing trace with hash -544278078, now seen corresponding path program 8 times [2018-06-22 16:09:23,434 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:09:23,434 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:09:23,435 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:09:23,435 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:09:23,435 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:09:23,518 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:09:24,043 INFO ]: Checked inductivity of 136 backedges. 5 proven. 85 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-06-22 16:09:24,044 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:09:24,044 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 16:09:24,050 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 16:09:24,169 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 16:09:24,169 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:09:24,175 INFO ]: Computing forward predicates... [2018-06-22 16:09:24,450 INFO ]: Checked inductivity of 136 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-06-22 16:09:24,470 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:09:24,470 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 27 [2018-06-22 16:09:24,470 INFO ]: Interpolant automaton has 27 states [2018-06-22 16:09:24,470 INFO ]: Constructing interpolant automaton starting with 27 interpolants. [2018-06-22 16:09:24,471 INFO ]: CoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2018-06-22 16:09:24,471 INFO ]: Start difference. First operand 27 states and 28 transitions. Second operand 27 states. [2018-06-22 16:09:25,371 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:09:25,371 INFO ]: Finished difference Result 29 states and 30 transitions. [2018-06-22 16:09:25,427 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 16:09:25,427 INFO ]: Start accepts. Automaton has 27 states. Word has length 41 [2018-06-22 16:09:25,427 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:09:25,428 INFO ]: With dead ends: 29 [2018-06-22 16:09:25,428 INFO ]: Without dead ends: 29 [2018-06-22 16:09:25,428 INFO ]: 0 DeclaredPredicates, 70 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=299, Invalid=1033, Unknown=0, NotChecked=0, Total=1332 [2018-06-22 16:09:25,429 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-22 16:09:25,432 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-22 16:09:25,432 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-22 16:09:25,433 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-06-22 16:09:25,433 INFO ]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 41 [2018-06-22 16:09:25,433 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:09:25,433 INFO ]: Abstraction has 29 states and 30 transitions. [2018-06-22 16:09:25,433 INFO ]: Interpolant automaton has 27 states. [2018-06-22 16:09:25,433 INFO ]: Start isEmpty. Operand 29 states and 30 transitions. [2018-06-22 16:09:25,434 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 16:09:25,434 INFO ]: Found error trace [2018-06-22 16:09:25,434 INFO ]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:09:25,434 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:09:25,434 INFO ]: Analyzing trace with hash 1442343014, now seen corresponding path program 9 times [2018-06-22 16:09:25,434 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:09:25,434 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:09:25,435 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:09:25,435 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:09:25,435 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:09:25,496 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:09:25,884 WARN ]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 16:09:26,553 INFO ]: Checked inductivity of 171 backedges. 3 proven. 123 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-06-22 16:09:26,553 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:09:26,553 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 16:09:26,558 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 16:09:26,727 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-06-22 16:09:26,727 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:09:26,736 INFO ]: Computing forward predicates... [2018-06-22 16:09:30,121 WARN ]: Spent 2.37 s on a formula simplification. DAG size of input: 325 DAG size of output: 56 [2018-06-22 16:09:30,142 WARN ]: expecting exponential blowup for input size 6 Received shutdown request... [2018-06-22 16:09:49,444 WARN ]: Removed 1047 from assertion stack [2018-06-22 16:09:49,444 INFO ]: Timeout while computing interpolants [2018-06-22 16:09:49,645 WARN ]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 16:09:49,645 WARN ]: Verification canceled [2018-06-22 16:09:49,649 WARN ]: Timeout [2018-06-22 16:09:49,649 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:09:49 BoogieIcfgContainer [2018-06-22 16:09:49,649 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 16:09:49,650 INFO ]: Toolchain (without parser) took 61457.53 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 260.6 MB in the beginning and 1.2 GB in the end (delta: -954.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 16:09:49,650 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 16:09:49,650 INFO ]: ChcToBoogie took 55.61 ms. Allocated memory is still 309.3 MB. Free memory was 260.6 MB in the beginning and 258.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:09:49,651 INFO ]: Boogie Preprocessor took 53.34 ms. Allocated memory is still 309.3 MB. Free memory was 258.6 MB in the beginning and 256.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:09:49,651 INFO ]: RCFGBuilder took 386.93 ms. Allocated memory is still 309.3 MB. Free memory was 256.6 MB in the beginning and 243.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:09:49,651 INFO ]: TraceAbstraction took 60948.49 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 243.6 MB in the beginning and 1.2 GB in the end (delta: -971.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 16:09:49,654 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 55.61 ms. Allocated memory is still 309.3 MB. Free memory was 260.6 MB in the beginning and 258.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 53.34 ms. Allocated memory is still 309.3 MB. Free memory was 258.6 MB in the beginning and 256.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 386.93 ms. Allocated memory is still 309.3 MB. Free memory was 256.6 MB in the beginning and 243.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 60948.49 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 243.6 MB in the beginning and 1.2 GB in the end (delta: -971.5 MB). Peak memory consumption was 1.2 GB. 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 analyzing trace of length 46 with TraceHistMax 10, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 1681. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 60.8s OverallTime, 10 OverallIterations, 10 TraceHistogramMax, 11.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 98 SDtfs, 313 SDslu, 710 SDs, 0 SdLazy, 561 SolverSat, 378 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 366 GetRequests, 173 SyntacticMatches, 3 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 21.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=9, 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 23.8s InterpolantComputationTime, 441 NumberOfCodeBlocks, 441 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 424 ConstructedInterpolants, 0 QuantifiedInterpolants, 105980 SizeOfPredicates, 256 NumberOfNonLiveVariables, 3600 ConjunctsInSsa, 295 ConjunctsInUnsatCore, 17 InterpolantComputations, 1 PerfectInterpolantSequences, 297/888 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/cd_e7_621_e8_714.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_16-09-49-661.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cd_e7_621_e8_714.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_16-09-49-661.csv Completed graceful shutdown