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/SYNAPSE_5_e7_1138_e8_809.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 20:19:39,999 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 20:19:40,000 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 20:19:40,014 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 20:19:40,014 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 20:19:40,015 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 20:19:40,016 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 20:19:40,018 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 20:19:40,019 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 20:19:40,020 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 20:19:40,021 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 20:19:40,021 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 20:19:40,022 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 20:19:40,023 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 20:19:40,023 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 20:19:40,024 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 20:19:40,026 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 20:19:40,028 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 20:19:40,030 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 20:19:40,031 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 20:19:40,032 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 20:19:40,034 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 20:19:40,034 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 20:19:40,035 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 20:19:40,036 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 20:19:40,037 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 20:19:40,037 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 20:19:40,038 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 20:19:40,039 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 20:19:40,039 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 20:19:40,040 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 20:19:40,041 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 20:19:40,041 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 20:19:40,042 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 20:19:40,042 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 20:19:40,043 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 20:19:40,055 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 20:19:40,056 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 20:19:40,056 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 20:19:40,056 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 20:19:40,057 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 20:19:40,057 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 20:19:40,058 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 20:19:40,058 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 20:19:40,058 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 20:19:40,058 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 20:19:40,059 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 20:19:40,059 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 20:19:40,059 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 20:19:40,059 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 20:19:40,059 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 20:19:40,060 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 20:19:40,060 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 20:19:40,060 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 20:19:40,060 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 20:19:40,062 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 20:19:40,062 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 20:19:40,101 INFO ]: Repository-Root is: /tmp [2018-06-22 20:19:40,114 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 20:19:40,120 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 20:19:40,121 INFO ]: Initializing SmtParser... [2018-06-22 20:19:40,121 INFO ]: SmtParser initialized [2018-06-22 20:19:40,122 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_5_e7_1138_e8_809.smt2 [2018-06-22 20:19:40,124 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 20:19:40,211 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_5_e7_1138_e8_809.smt2 unknown [2018-06-22 20:19:40,593 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_5_e7_1138_e8_809.smt2 [2018-06-22 20:19:40,597 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 20:19:40,613 INFO ]: Walking toolchain with 4 elements. [2018-06-22 20:19:40,614 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 20:19:40,614 INFO ]: Initializing ChcToBoogie... [2018-06-22 20:19:40,614 INFO ]: ChcToBoogie initialized [2018-06-22 20:19:40,617 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:19:40" (1/1) ... [2018-06-22 20:19:40,684 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:40 Unit [2018-06-22 20:19:40,684 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 20:19:40,685 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 20:19:40,685 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 20:19:40,685 INFO ]: Boogie Preprocessor initialized [2018-06-22 20:19:40,706 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:40" (1/1) ... [2018-06-22 20:19:40,706 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:40" (1/1) ... [2018-06-22 20:19:40,714 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:40" (1/1) ... [2018-06-22 20:19:40,715 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:40" (1/1) ... [2018-06-22 20:19:40,725 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:40" (1/1) ... [2018-06-22 20:19:40,726 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:40" (1/1) ... [2018-06-22 20:19:40,728 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:40" (1/1) ... [2018-06-22 20:19:40,730 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 20:19:40,731 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 20:19:40,731 INFO ]: Initializing RCFGBuilder... [2018-06-22 20:19:40,731 INFO ]: RCFGBuilder initialized [2018-06-22 20:19:40,733 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:40" (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 20:19:40,748 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 20:19:40,748 INFO ]: Found specification of procedure False [2018-06-22 20:19:40,748 INFO ]: Found implementation of procedure False [2018-06-22 20:19:40,748 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 20:19:40,748 INFO ]: Found specification of procedure state [2018-06-22 20:19:40,748 INFO ]: Found implementation of procedure state [2018-06-22 20:19:40,748 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 20:19:40,748 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 20:19:40,748 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 20:19:40,988 INFO ]: Using library mode [2018-06-22 20:19:40,989 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:19:40 BoogieIcfgContainer [2018-06-22 20:19:40,989 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 20:19:40,991 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 20:19:40,991 INFO ]: Initializing TraceAbstraction... [2018-06-22 20:19:40,994 INFO ]: TraceAbstraction initialized [2018-06-22 20:19:40,994 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:19:40" (1/3) ... [2018-06-22 20:19:40,995 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f23e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:19:40, skipping insertion in model container [2018-06-22 20:19:40,995 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:40" (2/3) ... [2018-06-22 20:19:40,995 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f23e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:19:40, skipping insertion in model container [2018-06-22 20:19:40,995 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:19:40" (3/3) ... [2018-06-22 20:19:40,997 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 20:19:41,006 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 20:19:41,017 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 20:19:41,060 INFO ]: Using default assertion order modulation [2018-06-22 20:19:41,060 INFO ]: Interprodecural is true [2018-06-22 20:19:41,060 INFO ]: Hoare is false [2018-06-22 20:19:41,060 INFO ]: Compute interpolants for FPandBP [2018-06-22 20:19:41,060 INFO ]: Backedges is TWOTRACK [2018-06-22 20:19:41,060 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 20:19:41,060 INFO ]: Difference is false [2018-06-22 20:19:41,060 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 20:19:41,060 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 20:19:41,073 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 20:19:41,084 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 20:19:41,084 INFO ]: Found error trace [2018-06-22 20:19:41,085 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:19:41,086 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:19:41,092 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 20:19:41,094 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:19:41,095 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:19:41,128 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:19:41,128 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:19:41,128 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:19:41,204 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:19:41,392 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 20:19:41,394 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 20:19:41,395 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 20:19:41,396 INFO ]: Interpolant automaton has 4 states [2018-06-22 20:19:41,407 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 20:19:41,407 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:19:41,409 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 20:19:41,532 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:19:41,532 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 20:19:41,532 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 20:19:41,533 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 20:19:41,534 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:19:41,542 INFO ]: With dead ends: 13 [2018-06-22 20:19:41,542 INFO ]: Without dead ends: 13 [2018-06-22 20:19:41,544 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 20:19:41,556 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 20:19:41,586 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 20:19:41,587 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 20:19:41,587 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 20:19:41,588 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 20:19:41,588 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:19:41,588 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 20:19:41,588 INFO ]: Interpolant automaton has 4 states. [2018-06-22 20:19:41,588 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 20:19:41,589 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 20:19:41,589 INFO ]: Found error trace [2018-06-22 20:19:41,589 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:19:41,590 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:19:41,590 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 20:19:41,590 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:19:41,590 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:19:41,590 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:19:41,590 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:19:41,591 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:19:41,661 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:19:43,302 WARN ]: Spent 1.40 s on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2018-06-22 20:19:43,645 WARN ]: Spent 329.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-06-22 20:19:43,675 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:19:43,676 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:19:43,676 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 20:19:43,685 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:19:43,773 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:19:43,785 INFO ]: Computing forward predicates... [2018-06-22 20:19:43,882 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 20:19:44,083 WARN ]: Simplifying disjunction of 7776 conjuctions. This might take some time... [2018-06-22 20:19:51,731 INFO ]: Simplified to disjunction of 7776 conjuctions. [2018-06-22 20:19:51,853 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 20:19:51,996 WARN ]: Simplifying disjunction of 7776 conjuctions. This might take some time... [2018-06-22 20:20:03,770 INFO ]: Simplified to disjunction of 7776 conjuctions. [2018-06-22 20:20:12,151 WARN ]: Spent 138.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 20 [2018-06-22 20:20:12,256 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:20:12,285 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:20:12,285 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 20:20:12,286 INFO ]: Interpolant automaton has 8 states [2018-06-22 20:20:12,286 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 20:20:12,286 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 20:20:12,286 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 20:20:12,636 WARN ]: Spent 232.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2018-06-22 20:20:12,715 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:20:12,715 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 20:20:12,715 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 20:20:12,715 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 20:20:12,715 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:20:12,716 INFO ]: With dead ends: 15 [2018-06-22 20:20:12,716 INFO ]: Without dead ends: 15 [2018-06-22 20:20:12,717 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-06-22 20:20:12,717 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 20:20:12,719 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 20:20:12,719 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 20:20:12,720 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 20:20:12,720 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 20:20:12,720 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:20:12,720 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 20:20:12,720 INFO ]: Interpolant automaton has 8 states. [2018-06-22 20:20:12,720 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 20:20:12,721 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 20:20:12,721 INFO ]: Found error trace [2018-06-22 20:20:12,721 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:20:12,721 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:20:12,721 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 20:20:12,721 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:20:12,721 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:20:12,723 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:20:12,723 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:20:12,723 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:20:12,809 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:20:14,273 WARN ]: Spent 1.07 s on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2018-06-22 20:20:14,656 WARN ]: Spent 348.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 106 [2018-06-22 20:20:14,916 WARN ]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2018-06-22 20:20:14,943 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 20:20:14,943 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:20:14,943 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 20:20:14,956 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 20:20:15,044 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 20:20:15,044 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:20:15,055 INFO ]: Computing forward predicates... [2018-06-22 20:20:15,103 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 20:20:16,616 WARN ]: Simplifying disjunction of 93312 conjuctions. This might take some time... Received shutdown request... [2018-06-22 20:20:53,333 INFO ]: Timeout while computing interpolants [2018-06-22 20:20:53,534 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 20:20:53,534 WARN ]: Verification canceled [2018-06-22 20:20:53,538 WARN ]: Timeout [2018-06-22 20:20:53,538 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:20:53 BoogieIcfgContainer [2018-06-22 20:20:53,538 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 20:20:53,539 INFO ]: Toolchain (without parser) took 72941.25 ms. Allocated memory was 304.6 MB in the beginning and 746.6 MB in the end (delta: 442.0 MB). Free memory was 251.2 MB in the beginning and 422.4 MB in the end (delta: -171.2 MB). Peak memory consumption was 579.8 MB. Max. memory is 3.6 GB. [2018-06-22 20:20:53,540 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 304.6 MB. Free memory is still 270.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 20:20:53,542 INFO ]: ChcToBoogie took 70.51 ms. Allocated memory is still 304.6 MB. Free memory was 251.2 MB in the beginning and 249.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:20:53,543 INFO ]: Boogie Preprocessor took 45.93 ms. Allocated memory is still 304.6 MB. Free memory was 249.2 MB in the beginning and 247.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:20:53,543 INFO ]: RCFGBuilder took 258.08 ms. Allocated memory is still 304.6 MB. Free memory was 247.2 MB in the beginning and 230.2 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:20:53,543 INFO ]: TraceAbstraction took 72547.27 ms. Allocated memory was 304.6 MB in the beginning and 746.6 MB in the end (delta: 442.0 MB). Free memory was 230.2 MB in the beginning and 422.4 MB in the end (delta: -192.2 MB). Peak memory consumption was 558.8 MB. Max. memory is 3.6 GB. [2018-06-22 20:20:53,546 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 304.6 MB. Free memory is still 270.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 70.51 ms. Allocated memory is still 304.6 MB. Free memory was 251.2 MB in the beginning and 249.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 45.93 ms. Allocated memory is still 304.6 MB. Free memory was 249.2 MB in the beginning and 247.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 258.08 ms. Allocated memory is still 304.6 MB. Free memory was 247.2 MB in the beginning and 230.2 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 72547.27 ms. Allocated memory was 304.6 MB in the beginning and 746.6 MB in the end (delta: 442.0 MB). Free memory was 230.2 MB in the beginning and 422.4 MB in the end (delta: -192.2 MB). Peak memory consumption was 558.8 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 analyzing trace of length 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 93312 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 72.4s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 6 SDslu, 53 SDs, 0 SdLazy, 37 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 30.6s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 3108 SizeOfPredicates, 36 NumberOfNonLiveVariables, 330 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 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/SYNAPSE_5_e7_1138_e8_809.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_20-20-53-557.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/SYNAPSE_5_e7_1138_e8_809.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_20-20-53-557.csv Completed graceful shutdown