java -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/car_5_e7_244.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 13:57:54,737 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 13:57:54,740 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 13:57:54,757 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 13:57:54,757 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 13:57:54,758 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 13:57:54,759 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 13:57:54,763 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 13:57:54,765 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 13:57:54,766 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 13:57:54,768 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 13:57:54,768 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 13:57:54,769 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 13:57:54,770 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 13:57:54,770 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 13:57:54,774 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 13:57:54,775 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 13:57:54,777 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 13:57:54,787 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 13:57:54,788 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 13:57:54,789 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 13:57:54,791 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 13:57:54,791 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 13:57:54,791 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 13:57:54,795 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 13:57:54,796 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 13:57:54,797 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 13:57:54,797 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 13:57:54,798 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 13:57:54,798 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 13:57:54,801 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 13:57:54,802 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 13:57:54,802 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 13:57:54,803 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 13:57:54,803 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 13:57:54,803 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 13:57:54,828 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 13:57:54,828 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 13:57:54,829 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 13:57:54,829 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 13:57:54,832 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 13:57:54,832 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 13:57:54,832 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 13:57:54,832 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 13:57:54,832 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 13:57:54,833 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 13:57:54,833 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 13:57:54,833 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 13:57:54,833 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 13:57:54,833 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 13:57:54,833 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 13:57:54,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 13:57:54,837 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 13:57:54,840 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 13:57:54,840 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 13:57:54,901 INFO ]: Repository-Root is: /tmp [2018-06-18 13:57:54,921 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 13:57:54,926 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 13:57:54,927 INFO ]: Initializing SmtParser... [2018-06-18 13:57:54,928 INFO ]: SmtParser initialized [2018-06-18 13:57:54,928 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_5_e7_244.smt2 [2018-06-18 13:57:54,929 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-18 13:57:55,021 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_5_e7_244.smt2 unknown [2018-06-18 13:57:55,349 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_5_e7_244.smt2 [2018-06-18 13:57:55,354 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 13:57:55,368 INFO ]: Walking toolchain with 4 elements. [2018-06-18 13:57:55,369 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 13:57:55,369 INFO ]: Initializing ChcToBoogie... [2018-06-18 13:57:55,369 INFO ]: ChcToBoogie initialized [2018-06-18 13:57:55,385 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 01:57:55" (1/1) ... [2018-06-18 13:57:55,501 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:57:55 Unit [2018-06-18 13:57:55,501 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 13:57:55,504 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 13:57:55,504 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 13:57:55,504 INFO ]: Boogie Preprocessor initialized [2018-06-18 13:57:55,530 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:57:55" (1/1) ... [2018-06-18 13:57:55,530 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:57:55" (1/1) ... [2018-06-18 13:57:55,549 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:57:55" (1/1) ... [2018-06-18 13:57:55,549 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:57:55" (1/1) ... [2018-06-18 13:57:55,553 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:57:55" (1/1) ... [2018-06-18 13:57:55,555 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:57:55" (1/1) ... [2018-06-18 13:57:55,565 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:57:55" (1/1) ... [2018-06-18 13:57:55,567 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 13:57:55,569 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 13:57:55,569 INFO ]: Initializing RCFGBuilder... [2018-06-18 13:57:55,569 INFO ]: RCFGBuilder initialized [2018-06-18 13:57:55,570 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:57:55" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-18 13:57:55,589 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 13:57:55,589 INFO ]: Found specification of procedure False [2018-06-18 13:57:55,589 INFO ]: Found implementation of procedure False [2018-06-18 13:57:55,589 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 13:57:55,589 INFO ]: Found specification of procedure state [2018-06-18 13:57:55,589 INFO ]: Found implementation of procedure state [2018-06-18 13:57:55,589 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 13:57:55,589 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 13:57:55,589 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 13:57:55,998 INFO ]: Using library mode [2018-06-18 13:57:55,999 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 01:57:55 BoogieIcfgContainer [2018-06-18 13:57:55,999 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 13:57:56,000 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 13:57:56,000 INFO ]: Initializing TraceAbstraction... [2018-06-18 13:57:56,007 INFO ]: TraceAbstraction initialized [2018-06-18 13:57:56,008 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 01:57:55" (1/3) ... [2018-06-18 13:57:56,008 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50647ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 01:57:56, skipping insertion in model container [2018-06-18 13:57:56,009 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:57:55" (2/3) ... [2018-06-18 13:57:56,009 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50647ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 01:57:56, skipping insertion in model container [2018-06-18 13:57:56,009 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 01:57:55" (3/3) ... [2018-06-18 13:57:56,011 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 13:57:56,022 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 13:57:56,033 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 13:57:56,083 INFO ]: Using default assertion order modulation [2018-06-18 13:57:56,083 INFO ]: Interprodecural is true [2018-06-18 13:57:56,083 INFO ]: Hoare is false [2018-06-18 13:57:56,083 INFO ]: Compute interpolants for FPandBP [2018-06-18 13:57:56,083 INFO ]: Backedges is TWOTRACK [2018-06-18 13:57:56,083 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 13:57:56,083 INFO ]: Difference is false [2018-06-18 13:57:56,083 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 13:57:56,084 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 13:57:56,100 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 13:57:56,112 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 13:57:56,112 INFO ]: Found error trace [2018-06-18 13:57:56,113 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:57:56,113 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:57:56,118 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 13:57:56,120 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:57:56,120 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:57:56,160 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:57:56,161 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:57:56,161 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:57:56,243 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:57:56,253 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:57:56,411 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 13:57:56,414 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 13:57:56,414 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 13:57:56,416 INFO ]: Interpolant automaton has 4 states [2018-06-18 13:57:56,428 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 13:57:56,428 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 13:57:56,431 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 13:57:56,534 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:57:56,534 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 13:57:56,536 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 13:57:56,538 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 13:57:56,538 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:57:56,556 INFO ]: With dead ends: 13 [2018-06-18 13:57:56,556 INFO ]: Without dead ends: 13 [2018-06-18 13:57:56,558 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 [2018-06-18 13:57:56,577 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 13:57:56,604 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 13:57:56,606 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 13:57:56,606 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 13:57:56,607 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 13:57:56,607 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:57:56,608 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 13:57:56,608 INFO ]: Interpolant automaton has 4 states. [2018-06-18 13:57:56,608 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 13:57:56,609 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 13:57:56,609 INFO ]: Found error trace [2018-06-18 13:57:56,609 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:57:56,609 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:57:56,609 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 13:57:56,609 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:57:56,609 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:57:56,610 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:57:56,610 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:57:56,610 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:57:56,702 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:57:56,702 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:57:57,140 WARN ]: Spent 263.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 21 [2018-06-18 13:57:57,381 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 13:57:57,381 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:57:57,381 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:57:57,392 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:57:57,501 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:57:57,514 INFO ]: Computing forward predicates... [2018-06-18 13:57:58,390 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 13:57:58,421 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:57:58,421 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-18 13:57:58,421 INFO ]: Interpolant automaton has 8 states [2018-06-18 13:57:58,421 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-18 13:57:58,422 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-18 13:57:58,422 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-18 13:57:58,834 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:57:58,834 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 13:57:58,836 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 13:57:58,836 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-18 13:57:58,836 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:57:58,836 INFO ]: With dead ends: 15 [2018-06-18 13:57:58,836 INFO ]: Without dead ends: 15 [2018-06-18 13:57:58,837 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-18 13:57:58,837 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 13:57:58,840 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 13:57:58,840 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 13:57:58,840 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 13:57:58,841 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 13:57:58,845 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:57:58,845 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 13:57:58,845 INFO ]: Interpolant automaton has 8 states. [2018-06-18 13:57:58,845 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 13:57:58,846 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 13:57:58,846 INFO ]: Found error trace [2018-06-18 13:57:58,846 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:57:58,846 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:57:58,846 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 13:57:58,846 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:57:58,846 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:57:58,849 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:57:58,849 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:57:58,849 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:57:58,953 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:57:58,954 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:57:59,713 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 13:57:59,713 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:57:59,713 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:57:59,721 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 13:57:59,807 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 13:57:59,807 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:57:59,812 INFO ]: Computing forward predicates... [2018-06-18 13:58:00,162 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 13:58:00,198 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:58:00,198 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-18 13:58:00,198 INFO ]: Interpolant automaton has 12 states [2018-06-18 13:58:00,198 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-18 13:58:00,199 INFO ]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-06-18 13:58:00,199 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-18 13:58:00,383 WARN ]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-06-18 13:58:00,550 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2018-06-18 13:58:00,635 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:58:00,635 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-18 13:58:00,636 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 13:58:00,636 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-18 13:58:00,636 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:58:00,637 INFO ]: With dead ends: 17 [2018-06-18 13:58:00,637 INFO ]: Without dead ends: 17 [2018-06-18 13:58:00,637 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2018-06-18 13:58:00,637 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-18 13:58:00,640 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-18 13:58:00,640 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-18 13:58:00,640 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-18 13:58:00,640 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-18 13:58:00,641 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:58:00,641 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-18 13:58:00,641 INFO ]: Interpolant automaton has 12 states. [2018-06-18 13:58:00,641 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-18 13:58:00,641 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-18 13:58:00,641 INFO ]: Found error trace [2018-06-18 13:58:00,641 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:58:00,642 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:58:00,642 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-18 13:58:00,642 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:58:00,642 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:58:00,643 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:58:00,643 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:58:00,643 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:58:00,697 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:58:00,698 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:58:01,219 WARN ]: Spent 343.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2018-06-18 13:58:01,634 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 13:58:01,634 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:58:01,634 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) [2018-06-18 13:58:01,650 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:58:01,763 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-18 13:58:01,763 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:58:01,769 INFO ]: Computing forward predicates... [2018-06-18 13:58:02,688 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 13:58:02,717 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:58:02,717 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-18 13:58:02,717 INFO ]: Interpolant automaton has 16 states [2018-06-18 13:58:02,717 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-18 13:58:02,718 INFO ]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2018-06-18 13:58:02,718 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-18 13:58:03,187 WARN ]: Spent 284.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2018-06-18 13:58:03,588 WARN ]: Spent 356.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2018-06-18 13:58:03,894 WARN ]: Spent 283.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2018-06-18 13:58:04,169 WARN ]: Spent 249.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-06-18 13:58:04,683 WARN ]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-06-18 13:58:05,013 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:58:05,013 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-18 13:58:05,016 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-18 13:58:05,016 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-18 13:58:05,016 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:58:05,017 INFO ]: With dead ends: 21 [2018-06-18 13:58:05,017 INFO ]: Without dead ends: 21 [2018-06-18 13:58:05,017 INFO ]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2018-06-18 13:58:05,017 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-18 13:58:05,021 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-18 13:58:05,021 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-18 13:58:05,022 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-18 13:58:05,022 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 21 [2018-06-18 13:58:05,022 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:58:05,022 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-18 13:58:05,022 INFO ]: Interpolant automaton has 16 states. [2018-06-18 13:58:05,022 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-18 13:58:05,023 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-18 13:58:05,023 INFO ]: Found error trace [2018-06-18 13:58:05,023 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:58:05,023 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:58:05,023 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 4 times [2018-06-18 13:58:05,023 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:58:05,023 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:58:05,024 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:58:05,024 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:58:05,024 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:58:05,111 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:58:05,112 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:58:05,477 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2018-06-18 13:58:05,978 WARN ]: Spent 385.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2018-06-18 13:58:06,176 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2018-06-18 13:58:06,417 WARN ]: Spent 221.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-06-18 13:58:07,050 WARN ]: Spent 419.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 12 [2018-06-18 13:58:07,085 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-18 13:58:07,085 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:58:07,085 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:58:07,091 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-18 13:58:07,213 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-18 13:58:07,213 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:58:07,219 INFO ]: Computing forward predicates... [2018-06-18 13:58:08,016 INFO ]: Checked inductivity of 55 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-18 13:58:08,037 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:58:08,037 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 23 [2018-06-18 13:58:08,038 INFO ]: Interpolant automaton has 23 states [2018-06-18 13:58:08,038 INFO ]: Constructing interpolant automaton starting with 23 interpolants. [2018-06-18 13:58:08,038 INFO ]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2018-06-18 13:58:08,038 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 23 states. [2018-06-18 13:58:08,275 WARN ]: Spent 172.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2018-06-18 13:58:08,505 WARN ]: Spent 189.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-06-18 13:58:08,869 WARN ]: Spent 336.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2018-06-18 13:58:09,132 WARN ]: Spent 217.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2018-06-18 13:58:09,324 WARN ]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2018-06-18 13:58:09,648 WARN ]: Spent 218.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2018-06-18 13:58:09,694 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:58:09,694 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-18 13:58:09,695 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-18 13:58:09,695 INFO ]: Start accepts. Automaton has 23 states. Word has length 29 [2018-06-18 13:58:09,695 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:58:09,696 INFO ]: With dead ends: 23 [2018-06-18 13:58:09,696 INFO ]: Without dead ends: 23 [2018-06-18 13:58:09,696 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2018-06-18 13:58:09,696 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-18 13:58:09,700 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-18 13:58:09,700 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-18 13:58:09,701 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-18 13:58:09,701 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 29 [2018-06-18 13:58:09,701 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:58:09,701 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-18 13:58:09,701 INFO ]: Interpolant automaton has 23 states. [2018-06-18 13:58:09,701 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-18 13:58:09,702 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-18 13:58:09,702 INFO ]: Found error trace [2018-06-18 13:58:09,702 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:58:09,702 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:58:09,702 INFO ]: Analyzing trace with hash -1661294575, now seen corresponding path program 5 times [2018-06-18 13:58:09,702 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:58:09,702 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:58:09,703 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:58:09,703 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:58:09,703 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:58:09,793 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:58:09,794 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:58:10,305 WARN ]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-06-18 13:58:11,544 WARN ]: Spent 1.17 s on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2018-06-18 13:58:11,812 WARN ]: Spent 122.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2018-06-18 13:58:11,992 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2018-06-18 13:58:12,393 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-18 13:58:12,393 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:58:12,393 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 [2018-06-18 13:58:12,404 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-18 13:58:12,532 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-06-18 13:58:12,532 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:58:12,539 INFO ]: Computing forward predicates... [2018-06-18 13:58:14,365 WARN ]: Spent 908.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-06-18 13:58:15,424 WARN ]: Spent 205.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 8 [2018-06-18 13:58:15,742 INFO ]: Checked inductivity of 78 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-18 13:58:15,778 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:58:15,778 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 27 [2018-06-18 13:58:15,778 INFO ]: Interpolant automaton has 27 states [2018-06-18 13:58:15,778 INFO ]: Constructing interpolant automaton starting with 27 interpolants. [2018-06-18 13:58:15,779 INFO ]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2018-06-18 13:58:15,779 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 27 states. [2018-06-18 13:58:16,622 WARN ]: Spent 542.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2018-06-18 13:58:17,092 WARN ]: Spent 288.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2018-06-18 13:58:17,315 WARN ]: Spent 193.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2018-06-18 13:58:17,687 WARN ]: Spent 319.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2018-06-18 13:58:17,860 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2018-06-18 13:58:18,040 WARN ]: Spent 138.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2018-06-18 13:58:18,209 WARN ]: Spent 130.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2018-06-18 13:58:18,428 WARN ]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2018-06-18 13:58:18,468 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:58:18,468 INFO ]: Finished difference Result 27 states and 28 transitions. [2018-06-18 13:58:18,469 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-18 13:58:18,469 INFO ]: Start accepts. Automaton has 27 states. Word has length 33 [2018-06-18 13:58:18,469 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:58:18,470 INFO ]: With dead ends: 27 [2018-06-18 13:58:18,470 INFO ]: Without dead ends: 27 [2018-06-18 13:58:18,470 INFO ]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2018-06-18 13:58:18,470 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-18 13:58:18,476 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-18 13:58:18,476 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-18 13:58:18,477 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-06-18 13:58:18,477 INFO ]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 33 [2018-06-18 13:58:18,477 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:58:18,477 INFO ]: Abstraction has 27 states and 28 transitions. [2018-06-18 13:58:18,477 INFO ]: Interpolant automaton has 27 states. [2018-06-18 13:58:18,477 INFO ]: Start isEmpty. Operand 27 states and 28 transitions. [2018-06-18 13:58:18,478 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-18 13:58:18,478 INFO ]: Found error trace [2018-06-18 13:58:18,478 INFO ]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:58:18,478 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:58:18,478 INFO ]: Analyzing trace with hash 1618126293, now seen corresponding path program 6 times [2018-06-18 13:58:18,478 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:58:18,478 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:58:18,479 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:58:18,479 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:58:18,479 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:58:18,614 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:58:18,616 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:58:19,083 WARN ]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-06-18 13:58:19,420 WARN ]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 26 [2018-06-18 13:58:19,559 WARN ]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 27 [2018-06-18 13:58:19,711 WARN ]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2018-06-18 13:58:19,860 WARN ]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 39 [2018-06-18 13:58:20,123 WARN ]: Spent 243.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2018-06-18 13:58:20,433 WARN ]: Spent 109.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 29 [2018-06-18 13:58:20,604 WARN ]: Spent 141.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 31 [2018-06-18 13:58:20,796 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 12 [2018-06-18 13:58:20,952 INFO ]: Checked inductivity of 136 backedges. 4 proven. 96 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-18 13:58:20,952 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:58:20,952 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 [2018-06-18 13:58:20,971 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-18 13:58:21,213 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-06-18 13:58:21,213 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:58:21,223 INFO ]: Computing forward predicates... [2018-06-18 13:58:22,581 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-18 13:58:22,602 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:58:22,602 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 36 [2018-06-18 13:58:22,603 INFO ]: Interpolant automaton has 36 states [2018-06-18 13:58:22,603 INFO ]: Constructing interpolant automaton starting with 36 interpolants. [2018-06-18 13:58:22,603 INFO ]: CoverageRelationStatistics Valid=96, Invalid=1164, Unknown=0, NotChecked=0, Total=1260 [2018-06-18 13:58:22,604 INFO ]: Start difference. First operand 27 states and 28 transitions. Second operand 36 states. [2018-06-18 13:58:22,997 WARN ]: Spent 245.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 94 [2018-06-18 13:58:23,470 WARN ]: Spent 414.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 98 [2018-06-18 13:58:23,814 WARN ]: Spent 303.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 105 [2018-06-18 13:58:24,393 WARN ]: Spent 497.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 105 [2018-06-18 13:58:24,725 WARN ]: Spent 283.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 104 [2018-06-18 13:58:25,104 WARN ]: Spent 299.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 103 [2018-06-18 13:58:25,457 WARN ]: Spent 296.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 103 [2018-06-18 13:58:25,774 WARN ]: Spent 256.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 98 [2018-06-18 13:58:26,078 WARN ]: Spent 237.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 93 [2018-06-18 13:58:26,476 WARN ]: Spent 238.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 90 [2018-06-18 13:58:26,868 WARN ]: Spent 321.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 87 [2018-06-18 13:58:26,960 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:58:26,960 INFO ]: Finished difference Result 33 states and 34 transitions. [2018-06-18 13:58:26,960 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-18 13:58:26,961 INFO ]: Start accepts. Automaton has 36 states. Word has length 41 [2018-06-18 13:58:26,961 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:58:26,961 INFO ]: With dead ends: 33 [2018-06-18 13:58:26,961 INFO ]: Without dead ends: 33 [2018-06-18 13:58:26,962 INFO ]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=434, Invalid=1822, Unknown=0, NotChecked=0, Total=2256 [2018-06-18 13:58:26,962 INFO ]: Start minimizeSevpa. Operand 33 states. [2018-06-18 13:58:26,967 INFO ]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-06-18 13:58:26,967 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-18 13:58:26,967 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-06-18 13:58:26,968 INFO ]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 41 [2018-06-18 13:58:26,968 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:58:26,968 INFO ]: Abstraction has 33 states and 34 transitions. [2018-06-18 13:58:26,968 INFO ]: Interpolant automaton has 36 states. [2018-06-18 13:58:26,968 INFO ]: Start isEmpty. Operand 33 states and 34 transitions. [2018-06-18 13:58:26,969 INFO ]: Finished isEmpty. Found accepting run of length 54 [2018-06-18 13:58:26,969 INFO ]: Found error trace [2018-06-18 13:58:26,969 INFO ]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:58:26,969 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:58:26,969 INFO ]: Analyzing trace with hash 1955719355, now seen corresponding path program 7 times [2018-06-18 13:58:26,969 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:58:26,969 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:58:26,970 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:58:26,970 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:58:26,970 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:58:27,332 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:58:27,334 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:58:28,999 WARN ]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-06-18 13:58:30,123 WARN ]: Spent 1.05 s on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2018-06-18 13:58:30,724 WARN ]: Spent 484.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 44 [2018-06-18 13:58:32,319 WARN ]: Spent 1.45 s on a formula simplification. DAG size of input: 147 DAG size of output: 44 [2018-06-18 13:58:33,005 WARN ]: Spent 646.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 44 [2018-06-18 13:58:33,655 WARN ]: Spent 588.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 54 [2018-06-18 13:58:34,059 WARN ]: Spent 352.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 49 [2018-06-18 13:58:34,342 WARN ]: Spent 257.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 49 [2018-06-18 13:58:34,589 WARN ]: Spent 172.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2018-06-18 13:58:34,837 WARN ]: Spent 184.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 46 [2018-06-18 13:58:35,099 WARN ]: Spent 186.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 49 [2018-06-18 13:58:35,306 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 30 [2018-06-18 13:58:35,763 WARN ]: Spent 414.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 40 [2018-06-18 13:58:35,985 WARN ]: Spent 139.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 38 [2018-06-18 13:58:36,383 WARN ]: Spent 334.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 35 [2018-06-18 13:58:37,073 WARN ]: Spent 453.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 33 [2018-06-18 13:58:38,369 WARN ]: Spent 1.10 s on a formula simplification. DAG size of input: 422 DAG size of output: 33 [2018-06-18 13:58:39,912 WARN ]: Spent 1.26 s on a formula simplification. DAG size of input: 584 DAG size of output: 30 [2018-06-18 13:58:41,531 WARN ]: Spent 1.35 s on a formula simplification. DAG size of input: 458 DAG size of output: 29 [2018-06-18 13:58:43,014 WARN ]: Spent 1.26 s on a formula simplification. DAG size of input: 305 DAG size of output: 20 [2018-06-18 13:58:43,115 INFO ]: Checked inductivity of 253 backedges. 5 proven. 182 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-06-18 13:58:43,115 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:58:43,115 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 [2018-06-18 13:58:43,122 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:58:43,342 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:58:43,362 INFO ]: Computing forward predicates... [2018-06-18 13:58:44,664 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:58:44,670 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:58:45,180 WARN ]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 27 [2018-06-18 13:58:45,474 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2018-06-18 13:58:47,268 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:58:47,277 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:58:47,796 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:58:47,806 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:58:48,480 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:58:48,483 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:58:49,662 WARN ]: Spent 347.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 18 [2018-06-18 13:58:50,880 INFO ]: Checked inductivity of 253 backedges. 14 proven. 165 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-06-18 13:58:50,902 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:58:50,902 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21] total 43 [2018-06-18 13:58:50,903 INFO ]: Interpolant automaton has 43 states [2018-06-18 13:58:50,904 INFO ]: Constructing interpolant automaton starting with 43 interpolants. [2018-06-18 13:58:50,904 INFO ]: CoverageRelationStatistics Valid=184, Invalid=1622, Unknown=0, NotChecked=0, Total=1806 [2018-06-18 13:58:50,904 INFO ]: Start difference. First operand 33 states and 34 transitions. Second operand 43 states. [2018-06-18 13:58:52,210 WARN ]: Spent 1.17 s on a formula simplification. DAG size of input: 164 DAG size of output: 103 [2018-06-18 13:58:52,800 WARN ]: Spent 522.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 Received shutdown request... [2018-06-18 13:58:54,636 WARN ]: Removed 13 from assertion stack [2018-06-18 13:58:54,636 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 13:58:54,636 WARN ]: Verification canceled [2018-06-18 13:58:54,641 WARN ]: Timeout [2018-06-18 13:58:54,642 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 01:58:54 BoogieIcfgContainer [2018-06-18 13:58:54,642 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 13:58:54,643 INFO ]: Toolchain (without parser) took 59288.81 ms. Allocated memory was 305.1 MB in the beginning and 890.2 MB in the end (delta: 585.1 MB). Free memory was 253.6 MB in the beginning and 601.6 MB in the end (delta: -348.0 MB). Peak memory consumption was 237.1 MB. Max. memory is 3.6 GB. [2018-06-18 13:58:54,644 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 305.1 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 13:58:54,645 INFO ]: ChcToBoogie took 134.17 ms. Allocated memory is still 305.1 MB. Free memory was 253.6 MB in the beginning and 250.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-18 13:58:54,645 INFO ]: Boogie Preprocessor took 63.97 ms. Allocated memory is still 305.1 MB. Free memory was 250.6 MB in the beginning and 249.6 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. [2018-06-18 13:58:54,646 INFO ]: RCFGBuilder took 430.09 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. [2018-06-18 13:58:54,646 INFO ]: TraceAbstraction took 58641.82 ms. Allocated memory was 305.1 MB in the beginning and 890.2 MB in the end (delta: 585.1 MB). Free memory was 232.6 MB in the beginning and 601.6 MB in the end (delta: -369.0 MB). Peak memory consumption was 216.1 MB. Max. memory is 3.6 GB. [2018-06-18 13:58:54,648 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 305.1 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 134.17 ms. Allocated memory is still 305.1 MB. Free memory was 253.6 MB in the beginning and 250.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 63.97 ms. Allocated memory is still 305.1 MB. Free memory was 250.6 MB in the beginning and 249.6 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. * RCFGBuilder took 430.09 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 58641.82 ms. Allocated memory was 305.1 MB in the beginning and 890.2 MB in the end (delta: 585.1 MB). Free memory was 232.6 MB in the beginning and 601.6 MB in the end (delta: -369.0 MB). Peak memory consumption was 216.1 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 (33states) and interpolant automaton (currently 6 states, 43 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 191. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 58.5s OverallTime, 8 OverallIterations, 12 TraceHistogramMax, 15.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 84 SDtfs, 361 SDslu, 708 SDs, 0 SdLazy, 590 SolverSat, 445 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 146 SyntacticMatches, 5 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 41.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=7, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 40.2s InterpolantComputationTime, 423 NumberOfCodeBlocks, 423 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 206644 SizeOfPredicates, 461 NumberOfNonLiveVariables, 5315 ConjunctsInSsa, 476 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 329/1112 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_5_e7_244.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_13-58-54-678.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_5_e7_244.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_13-58-54-678.csv Completed graceful shutdown