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/sally-chc-benchmarks/oral_messages/om1_with_relays_validity_two_faults.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 13:46:32,047 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 13:46:32,049 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 13:46:32,062 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 13:46:32,062 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 13:46:32,063 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 13:46:32,067 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 13:46:32,069 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 13:46:32,071 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 13:46:32,073 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 13:46:32,074 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 13:46:32,074 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 13:46:32,075 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 13:46:32,076 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 13:46:32,076 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 13:46:32,081 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 13:46:32,083 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 13:46:32,085 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 13:46:32,098 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 13:46:32,099 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 13:46:32,100 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 13:46:32,102 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 13:46:32,102 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 13:46:32,103 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 13:46:32,103 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 13:46:32,104 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 13:46:32,105 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 13:46:32,106 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 13:46:32,110 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 13:46:32,110 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 13:46:32,111 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 13:46:32,111 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 13:46:32,112 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 13:46:32,112 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 13:46:32,120 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 13:46:32,120 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 13:46:32,140 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 13:46:32,141 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 13:46:32,141 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 13:46:32,141 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 13:46:32,143 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 13:46:32,143 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 13:46:32,144 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 13:46:32,144 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 13:46:32,144 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 13:46:32,144 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 13:46:32,144 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 13:46:32,145 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 13:46:32,145 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 13:46:32,145 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 13:46:32,145 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 13:46:32,145 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 13:46:32,145 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 13:46:32,146 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 13:46:32,146 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 13:46:32,148 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 13:46:32,148 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 13:46:32,197 INFO ]: Repository-Root is: /tmp [2018-06-22 13:46:32,210 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 13:46:32,216 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 13:46:32,217 INFO ]: Initializing SmtParser... [2018-06-22 13:46:32,218 INFO ]: SmtParser initialized [2018-06-22 13:46:32,218 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/sally-chc-benchmarks/oral_messages/om1_with_relays_validity_two_faults.smt2 [2018-06-22 13:46:32,219 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 13:46:32,307 INFO ]: Executing SMT file /storage/chc-comp/sally-chc-benchmarks/oral_messages/om1_with_relays_validity_two_faults.smt2 unknown [2018-06-22 13:46:32,623 INFO ]: Succesfully executed SMT file /storage/chc-comp/sally-chc-benchmarks/oral_messages/om1_with_relays_validity_two_faults.smt2 [2018-06-22 13:46:32,627 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 13:46:32,642 INFO ]: Walking toolchain with 4 elements. [2018-06-22 13:46:32,643 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 13:46:32,643 INFO ]: Initializing ChcToBoogie... [2018-06-22 13:46:32,643 INFO ]: ChcToBoogie initialized [2018-06-22 13:46:32,646 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:46:32" (1/1) ... [2018-06-22 13:46:32,701 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:46:32 Unit [2018-06-22 13:46:32,701 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 13:46:32,703 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 13:46:32,703 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 13:46:32,703 INFO ]: Boogie Preprocessor initialized [2018-06-22 13:46:32,725 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:46:32" (1/1) ... [2018-06-22 13:46:32,725 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:46:32" (1/1) ... [2018-06-22 13:46:32,737 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:46:32" (1/1) ... [2018-06-22 13:46:32,737 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:46:32" (1/1) ... [2018-06-22 13:46:32,754 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:46:32" (1/1) ... [2018-06-22 13:46:32,755 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:46:32" (1/1) ... [2018-06-22 13:46:32,757 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:46:32" (1/1) ... [2018-06-22 13:46:32,768 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 13:46:32,769 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 13:46:32,769 INFO ]: Initializing RCFGBuilder... [2018-06-22 13:46:32,769 INFO ]: RCFGBuilder initialized [2018-06-22 13:46:32,769 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:46:32" (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 13:46:32,801 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 13:46:32,801 INFO ]: Found specification of procedure False [2018-06-22 13:46:32,801 INFO ]: Found implementation of procedure False [2018-06-22 13:46:32,801 INFO ]: Specification and implementation of procedure invariant given in one single declaration [2018-06-22 13:46:32,801 INFO ]: Found specification of procedure invariant [2018-06-22 13:46:32,801 INFO ]: Found implementation of procedure invariant [2018-06-22 13:46:32,801 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 13:46:32,801 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 13:46:32,801 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 13:46:33,152 INFO ]: Using library mode [2018-06-22 13:46:33,152 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:46:33 BoogieIcfgContainer [2018-06-22 13:46:33,152 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 13:46:33,154 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 13:46:33,154 INFO ]: Initializing TraceAbstraction... [2018-06-22 13:46:33,160 INFO ]: TraceAbstraction initialized [2018-06-22 13:46:33,160 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:46:32" (1/3) ... [2018-06-22 13:46:33,161 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331c6e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:46:33, skipping insertion in model container [2018-06-22 13:46:33,161 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:46:32" (2/3) ... [2018-06-22 13:46:33,162 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331c6e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:46:33, skipping insertion in model container [2018-06-22 13:46:33,162 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:46:33" (3/3) ... [2018-06-22 13:46:33,163 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 13:46:33,172 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 13:46:33,177 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 13:46:33,217 INFO ]: Using default assertion order modulation [2018-06-22 13:46:33,218 INFO ]: Interprodecural is true [2018-06-22 13:46:33,218 INFO ]: Hoare is false [2018-06-22 13:46:33,218 INFO ]: Compute interpolants for FPandBP [2018-06-22 13:46:33,218 INFO ]: Backedges is TWOTRACK [2018-06-22 13:46:33,218 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 13:46:33,218 INFO ]: Difference is false [2018-06-22 13:46:33,218 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 13:46:33,218 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 13:46:33,235 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 13:46:33,249 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 13:46:33,249 INFO ]: Found error trace [2018-06-22 13:46:33,250 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 13:46:33,250 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 13:46:33,256 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 13:46:33,258 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 13:46:33,258 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 13:46:33,306 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 13:46:33,306 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 13:46:33,306 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 13:46:33,395 INFO ]: Conjunction of SSA is unsat [2018-06-22 13:46:33,552 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 13:46:33,554 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 13:46:33,554 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 13:46:33,555 INFO ]: Interpolant automaton has 4 states [2018-06-22 13:46:33,565 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 13:46:33,566 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 13:46:33,567 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 13:46:33,705 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 13:46:33,705 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 13:46:33,708 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 13:46:33,710 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 13:46:33,710 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 13:46:33,723 INFO ]: With dead ends: 13 [2018-06-22 13:46:33,723 INFO ]: Without dead ends: 13 [2018-06-22 13:46:33,724 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 13:46:33,744 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 13:46:33,783 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 13:46:33,784 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 13:46:33,785 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 13:46:33,786 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 13:46:33,786 INFO ]: Finished accepts. word is rejected. [2018-06-22 13:46:33,786 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 13:46:33,786 INFO ]: Interpolant automaton has 4 states. [2018-06-22 13:46:33,786 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 13:46:33,789 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 13:46:33,789 INFO ]: Found error trace [2018-06-22 13:46:33,789 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 13:46:33,789 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 13:46:33,789 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 13:46:33,789 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 13:46:33,789 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 13:46:33,790 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 13:46:33,790 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 13:46:33,790 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 13:46:33,869 INFO ]: Conjunction of SSA is unsat [2018-06-22 13:46:34,035 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 13:46:34,035 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 13:46:34,035 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 13:46:34,047 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 13:46:34,174 INFO ]: Conjunction of SSA is unsat [2018-06-22 13:46:34,186 INFO ]: Computing forward predicates... [2018-06-22 13:46:35,210 WARN ]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-06-22 13:46:35,350 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 13:46:35,375 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 13:46:35,375 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 13:46:35,375 INFO ]: Interpolant automaton has 9 states [2018-06-22 13:46:35,375 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 13:46:35,376 INFO ]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-06-22 13:46:35,376 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 13:46:35,926 WARN ]: Spent 338.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 12 [2018-06-22 13:46:35,984 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 13:46:35,984 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 13:46:35,985 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 13:46:35,985 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 13:46:35,985 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 13:46:35,986 INFO ]: With dead ends: 17 [2018-06-22 13:46:35,986 INFO ]: Without dead ends: 17 [2018-06-22 13:46:35,986 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-06-22 13:46:35,987 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 13:46:35,989 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 13:46:35,989 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 13:46:35,990 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 13:46:35,990 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2018-06-22 13:46:35,990 INFO ]: Finished accepts. word is rejected. [2018-06-22 13:46:35,990 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 13:46:35,990 INFO ]: Interpolant automaton has 9 states. [2018-06-22 13:46:35,990 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 13:46:35,991 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 13:46:35,991 INFO ]: Found error trace [2018-06-22 13:46:35,991 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 13:46:35,991 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 13:46:35,991 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 2 times [2018-06-22 13:46:35,991 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 13:46:35,991 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 13:46:35,992 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 13:46:35,992 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 13:46:35,992 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 13:46:36,220 INFO ]: Conjunction of SSA is unsat [2018-06-22 13:46:37,861 WARN ]: Spent 581.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-06-22 13:46:41,975 WARN ]: Spent 4.06 s on a formula simplification. DAG size of input: 362 DAG size of output: 303 [2018-06-22 13:46:46,562 WARN ]: Spent 4.42 s on a formula simplification. DAG size of input: 504 DAG size of output: 401 [2018-06-22 13:46:48,197 WARN ]: Spent 1.51 s on a formula simplification. DAG size of input: 391 DAG size of output: 186 [2018-06-22 13:46:48,521 WARN ]: Spent 264.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 56 [2018-06-22 13:46:49,531 WARN ]: Spent 927.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 126 [2018-06-22 13:46:51,314 WARN ]: Spent 1.69 s on a formula simplification. DAG size of input: 243 DAG size of output: 184 [2018-06-22 13:46:51,617 WARN ]: Spent 218.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 51 [2018-06-22 13:46:51,633 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 13:46:51,634 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 13:46:51,634 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 13:46:51,642 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 13:46:51,781 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 13:46:51,781 INFO ]: Conjunction of SSA is unsat [2018-06-22 13:46:51,797 INFO ]: Computing forward predicates... [2018-06-22 13:47:05,885 WARN ]: Spent 843.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 182 [2018-06-22 13:47:10,342 WARN ]: Spent 4.23 s on a formula simplification. DAG size of input: 947 DAG size of output: 334 [2018-06-22 13:47:11,318 WARN ]: Spent 845.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 187 [2018-06-22 13:47:12,736 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 13:47:12,751 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 13:47:12,768 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 13:47:12,821 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 13:47:12,961 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 13:47:13,243 WARN ]: Simplifying disjunction of 12096 conjuctions. This might take some time... [2018-06-22 13:47:36,686 INFO ]: Simplified to disjunction of 12096 conjuctions. Received shutdown request... [2018-06-22 13:47:37,117 INFO ]: Timeout while computing interpolants [2018-06-22 13:47:37,318 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 13:47:37,318 WARN ]: Verification canceled [2018-06-22 13:47:37,322 WARN ]: Timeout [2018-06-22 13:47:37,322 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:47:37 BoogieIcfgContainer [2018-06-22 13:47:37,322 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 13:47:37,323 INFO ]: Toolchain (without parser) took 64695.29 ms. Allocated memory was 309.3 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 255.7 MB in the beginning and 1.2 GB in the end (delta: -962.8 MB). Peak memory consumption was 955.9 MB. Max. memory is 3.6 GB. [2018-06-22 13:47:37,324 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 13:47:37,324 INFO ]: ChcToBoogie took 58.67 ms. Allocated memory is still 309.3 MB. Free memory was 255.7 MB in the beginning and 253.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 13:47:37,324 INFO ]: Boogie Preprocessor took 65.01 ms. Allocated memory is still 309.3 MB. Free memory was 253.7 MB in the beginning and 251.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 13:47:37,325 INFO ]: RCFGBuilder took 383.89 ms. Allocated memory is still 309.3 MB. Free memory was 251.8 MB in the beginning and 233.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 3.6 GB. [2018-06-22 13:47:37,325 INFO ]: TraceAbstraction took 64168.02 ms. Allocated memory was 309.3 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 233.8 MB in the beginning and 1.2 GB in the end (delta: -984.8 MB). Peak memory consumption was 934.0 MB. Max. memory is 3.6 GB. [2018-06-22 13:47:37,328 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 58.67 ms. Allocated memory is still 309.3 MB. Free memory was 255.7 MB in the beginning and 253.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 65.01 ms. Allocated memory is still 309.3 MB. Free memory was 253.7 MB in the beginning and 251.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 383.89 ms. Allocated memory is still 309.3 MB. Free memory was 251.8 MB in the beginning and 233.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 64168.02 ms. Allocated memory was 309.3 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 233.8 MB in the beginning and 1.2 GB in the end (delta: -984.8 MB). Peak memory consumption was 934.0 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 22 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 32 quantified variables from 35 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 64.1s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 6 SDslu, 38 SDs, 0 SdLazy, 26 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 1.4s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1048 SizeOfPredicates, 92 NumberOfNonLiveVariables, 267 ConjunctsInSsa, 7 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/om1_with_relays_validity_two_faults.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_13-47-37-342.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/om1_with_relays_validity_two_faults.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_13-47-37-342.csv Completed graceful shutdown