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_e2_1525.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 20:19:32,001 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 20:19:32,003 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 20:19:32,017 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 20:19:32,017 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 20:19:32,018 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 20:19:32,019 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 20:19:32,026 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 20:19:32,027 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 20:19:32,028 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 20:19:32,028 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 20:19:32,030 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 20:19:32,031 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 20:19:32,032 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 20:19:32,033 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 20:19:32,033 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 20:19:32,037 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 20:19:32,039 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 20:19:32,048 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 20:19:32,049 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 20:19:32,050 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 20:19:32,051 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 20:19:32,052 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 20:19:32,052 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 20:19:32,053 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 20:19:32,057 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 20:19:32,057 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 20:19:32,058 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 20:19:32,059 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 20:19:32,059 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 20:19:32,059 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 20:19:32,062 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 20:19:32,062 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 20:19:32,063 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 20:19:32,063 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 20:19:32,064 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 20:19:32,078 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 20:19:32,078 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 20:19:32,079 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 20:19:32,079 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 20:19:32,080 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 20:19:32,080 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 20:19:32,080 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 20:19:32,080 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 20:19:32,081 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 20:19:32,081 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 20:19:32,081 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 20:19:32,081 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 20:19:32,081 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 20:19:32,081 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 20:19:32,082 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 20:19:32,082 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 20:19:32,082 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 20:19:32,082 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 20:19:32,082 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 20:19:32,084 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 20:19:32,084 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 20:19:32,133 INFO ]: Repository-Root is: /tmp [2018-06-22 20:19:32,145 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 20:19:32,149 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 20:19:32,153 INFO ]: Initializing SmtParser... [2018-06-22 20:19:32,154 INFO ]: SmtParser initialized [2018-06-22 20:19:32,154 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_5_e2_1525.smt2 [2018-06-22 20:19:32,156 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 20:19:32,248 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_5_e2_1525.smt2 unknown [2018-06-22 20:19:32,607 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_5_e2_1525.smt2 [2018-06-22 20:19:32,614 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 20:19:32,623 INFO ]: Walking toolchain with 4 elements. [2018-06-22 20:19:32,623 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 20:19:32,623 INFO ]: Initializing ChcToBoogie... [2018-06-22 20:19:32,623 INFO ]: ChcToBoogie initialized [2018-06-22 20:19:32,626 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:19:32" (1/1) ... [2018-06-22 20:19:32,671 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:32 Unit [2018-06-22 20:19:32,671 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 20:19:32,672 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 20:19:32,672 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 20:19:32,672 INFO ]: Boogie Preprocessor initialized [2018-06-22 20:19:32,688 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:32" (1/1) ... [2018-06-22 20:19:32,688 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:32" (1/1) ... [2018-06-22 20:19:32,699 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:32" (1/1) ... [2018-06-22 20:19:32,699 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:32" (1/1) ... [2018-06-22 20:19:32,704 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:32" (1/1) ... [2018-06-22 20:19:32,705 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:32" (1/1) ... [2018-06-22 20:19:32,707 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:32" (1/1) ... [2018-06-22 20:19:32,709 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 20:19:32,710 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 20:19:32,710 INFO ]: Initializing RCFGBuilder... [2018-06-22 20:19:32,710 INFO ]: RCFGBuilder initialized [2018-06-22 20:19:32,710 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:32" (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 20:19:32,724 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 20:19:32,724 INFO ]: Found specification of procedure False [2018-06-22 20:19:32,725 INFO ]: Found implementation of procedure False [2018-06-22 20:19:32,725 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 20:19:32,725 INFO ]: Found specification of procedure state [2018-06-22 20:19:32,725 INFO ]: Found implementation of procedure state [2018-06-22 20:19:32,725 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 20:19:32,725 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 20:19:32,725 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 20:19:33,071 INFO ]: Using library mode [2018-06-22 20:19:33,072 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:19:33 BoogieIcfgContainer [2018-06-22 20:19:33,072 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 20:19:33,073 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 20:19:33,073 INFO ]: Initializing TraceAbstraction... [2018-06-22 20:19:33,076 INFO ]: TraceAbstraction initialized [2018-06-22 20:19:33,076 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:19:32" (1/3) ... [2018-06-22 20:19:33,077 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4111c254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:19:33, skipping insertion in model container [2018-06-22 20:19:33,077 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:19:32" (2/3) ... [2018-06-22 20:19:33,077 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4111c254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:19:33, skipping insertion in model container [2018-06-22 20:19:33,077 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:19:33" (3/3) ... [2018-06-22 20:19:33,079 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 20:19:33,088 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 20:19:33,102 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 20:19:33,143 INFO ]: Using default assertion order modulation [2018-06-22 20:19:33,144 INFO ]: Interprodecural is true [2018-06-22 20:19:33,144 INFO ]: Hoare is false [2018-06-22 20:19:33,144 INFO ]: Compute interpolants for FPandBP [2018-06-22 20:19:33,144 INFO ]: Backedges is TWOTRACK [2018-06-22 20:19:33,144 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 20:19:33,144 INFO ]: Difference is false [2018-06-22 20:19:33,144 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 20:19:33,144 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 20:19:33,157 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 20:19:33,168 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 20:19:33,168 INFO ]: Found error trace [2018-06-22 20:19:33,169 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:19:33,169 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:19:33,175 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 20:19:33,177 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:19:33,178 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:19:33,218 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:19:33,219 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:19:33,219 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:19:33,290 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:19:33,462 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 20:19:33,464 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 20:19:33,464 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 20:19:33,466 INFO ]: Interpolant automaton has 4 states [2018-06-22 20:19:33,477 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 20:19:33,477 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:19:33,479 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 20:19:33,606 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:19:33,607 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 20:19:33,608 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 20:19:33,610 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 20:19:33,610 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:19:33,625 INFO ]: With dead ends: 13 [2018-06-22 20:19:33,625 INFO ]: Without dead ends: 13 [2018-06-22 20:19:33,626 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 20:19:33,639 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 20:19:33,660 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 20:19:33,661 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 20:19:33,661 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 20:19:33,662 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 20:19:33,662 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:19:33,662 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 20:19:33,662 INFO ]: Interpolant automaton has 4 states. [2018-06-22 20:19:33,662 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 20:19:33,663 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 20:19:33,663 INFO ]: Found error trace [2018-06-22 20:19:33,664 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:19:33,664 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:19:33,664 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 20:19:33,664 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:19:33,664 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:19:33,665 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:19:33,665 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:19:33,665 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:19:33,763 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:19:35,782 WARN ]: Spent 1.77 s on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2018-06-22 20:19:36,072 WARN ]: Spent 280.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-06-22 20:19:36,131 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:19:36,131 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:19:36,131 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) [2018-06-22 20:19:36,147 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 20:19:36,228 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:19:36,241 INFO ]: Computing forward predicates... [2018-06-22 20:19:36,702 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:19:36,769 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:19:36,802 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:19:36,807 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:19:36,810 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:19:36,850 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:19:39,164 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:19:39,186 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:19:39,186 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 20:19:39,187 INFO ]: Interpolant automaton has 8 states [2018-06-22 20:19:39,187 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 20:19:39,187 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 20:19:39,187 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 20:19:39,537 WARN ]: Spent 203.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2018-06-22 20:19:39,614 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:19:39,614 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 20:19:39,615 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 20:19:39,615 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 20:19:39,615 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:19:39,616 INFO ]: With dead ends: 15 [2018-06-22 20:19:39,616 INFO ]: Without dead ends: 15 [2018-06-22 20:19:39,617 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-06-22 20:19:39,617 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 20:19:39,619 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 20:19:39,619 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 20:19:39,620 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 20:19:39,620 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 20:19:39,620 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:19:39,620 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 20:19:39,620 INFO ]: Interpolant automaton has 8 states. [2018-06-22 20:19:39,620 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 20:19:39,620 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 20:19:39,620 INFO ]: Found error trace [2018-06-22 20:19:39,621 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:19:39,621 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:19:39,621 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 20:19:39,621 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:19:39,621 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:19:39,622 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:19:39,622 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:19:39,622 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:19:39,693 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:19:40,411 WARN ]: Spent 373.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2018-06-22 20:19:40,698 WARN ]: Spent 252.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-06-22 20:19:40,718 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 20:19:40,718 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:19:40,718 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 20:19:40,734 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 20:19:40,819 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 20:19:40,819 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:19:40,828 INFO ]: Computing forward predicates... [2018-06-22 20:19:40,877 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 20:19:41,912 WARN ]: Simplifying disjunction of 93312 conjuctions. This might take some time... Received shutdown request... [2018-06-22 20:20:50,841 INFO ]: Timeout while computing interpolants [2018-06-22 20:20:51,042 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 20:20:51,042 WARN ]: Verification canceled [2018-06-22 20:20:51,046 WARN ]: Timeout [2018-06-22 20:20:51,046 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:20:51 BoogieIcfgContainer [2018-06-22 20:20:51,046 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 20:20:51,047 INFO ]: Toolchain (without parser) took 78431.99 ms. Allocated memory was 307.8 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 254.2 MB in the beginning and 467.1 MB in the end (delta: -212.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 20:20:51,048 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 20:20:51,048 INFO ]: ChcToBoogie took 48.58 ms. Allocated memory is still 307.8 MB. Free memory was 254.2 MB in the beginning and 252.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:20:51,048 INFO ]: Boogie Preprocessor took 37.21 ms. Allocated memory is still 307.8 MB. Free memory was 252.2 MB in the beginning and 250.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:20:51,049 INFO ]: RCFGBuilder took 362.12 ms. Allocated memory is still 307.8 MB. Free memory was 250.2 MB in the beginning and 233.2 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:20:51,049 INFO ]: TraceAbstraction took 77973.14 ms. Allocated memory was 307.8 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 233.2 MB in the beginning and 467.1 MB in the end (delta: -233.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 20:20:51,052 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 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 48.58 ms. Allocated memory is still 307.8 MB. Free memory was 254.2 MB in the beginning and 252.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.21 ms. Allocated memory is still 307.8 MB. Free memory was 252.2 MB in the beginning and 250.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 362.12 ms. Allocated memory is still 307.8 MB. Free memory was 250.2 MB in the beginning and 233.2 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 77973.14 ms. Allocated memory was 307.8 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 233.2 MB in the beginning and 467.1 MB in the end (delta: -233.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 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, 77.9s 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.7s 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, 0.2s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 3108 SizeOfPredicates, 36 NumberOfNonLiveVariables, 330 ConjunctsInSsa, 45 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_e2_1525.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_20-20-51-063.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/SYNAPSE_5_e2_1525.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_20-20-51-063.csv Completed graceful shutdown