java -Xss4m -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_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/Consistency/fortune-half.23.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 08:25:44,205 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 08:25:44,207 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 08:25:44,220 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 08:25:44,220 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 08:25:44,222 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 08:25:44,223 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 08:25:44,225 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 08:25:44,226 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 08:25:44,227 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 08:25:44,228 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 08:25:44,228 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 08:25:44,229 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 08:25:44,230 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 08:25:44,231 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 08:25:44,232 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 08:25:44,233 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 08:25:44,238 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 08:25:44,239 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 08:25:44,247 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 08:25:44,248 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 08:25:44,256 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 08:25:44,256 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 08:25:44,257 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 08:25:44,258 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 08:25:44,258 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 08:25:44,259 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 08:25:44,260 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 08:25:44,261 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 08:25:44,261 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 08:25:44,262 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 08:25:44,263 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 08:25:44,263 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 08:25:44,264 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 08:25:44,264 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 08:25:44,264 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 08:25:44,278 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 08:25:44,278 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 08:25:44,279 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 08:25:44,279 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 08:25:44,280 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 08:25:44,280 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 08:25:44,280 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 08:25:44,280 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 08:25:44,281 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 08:25:44,281 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 08:25:44,281 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 08:25:44,281 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 08:25:44,282 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:25:44,282 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 08:25:44,282 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 08:25:44,282 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 08:25:44,282 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 08:25:44,282 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 08:25:44,283 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 08:25:44,283 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 08:25:44,283 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 08:25:44,288 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 08:25:44,288 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 08:25:44,331 INFO ]: Repository-Root is: /tmp [2018-06-25 08:25:44,350 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 08:25:44,354 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 08:25:44,356 INFO ]: Initializing SmtParser... [2018-06-25 08:25:44,356 INFO ]: SmtParser initialized [2018-06-25 08:25:44,357 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/fortune-half.23.smt2 [2018-06-25 08:25:44,359 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 [2018-06-25 08:25:44,459 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/fortune-half.23.smt2 unknown [2018-06-25 08:25:44,982 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/fortune-half.23.smt2 [2018-06-25 08:25:44,987 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 08:25:44,992 INFO ]: Walking toolchain with 4 elements. [2018-06-25 08:25:44,995 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 08:25:44,995 INFO ]: Initializing ChcToBoogie... [2018-06-25 08:25:44,995 INFO ]: ChcToBoogie initialized [2018-06-25 08:25:44,998 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:25:44" (1/1) ... [2018-06-25 08:25:45,113 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:25:45 Unit [2018-06-25 08:25:45,113 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 08:25:45,114 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 08:25:45,114 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 08:25:45,114 INFO ]: Boogie Preprocessor initialized [2018-06-25 08:25:45,136 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:25:45" (1/1) ... [2018-06-25 08:25:45,136 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:25:45" (1/1) ... [2018-06-25 08:25:45,150 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:25:45" (1/1) ... [2018-06-25 08:25:45,150 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:25:45" (1/1) ... [2018-06-25 08:25:45,165 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:25:45" (1/1) ... [2018-06-25 08:25:45,169 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:25:45" (1/1) ... [2018-06-25 08:25:45,173 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:25:45" (1/1) ... [2018-06-25 08:25:45,177 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 08:25:45,178 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 08:25:45,178 INFO ]: Initializing RCFGBuilder... [2018-06-25 08:25:45,178 INFO ]: RCFGBuilder initialized [2018-06-25 08:25:45,179 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:25:45" (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) [2018-06-25 08:25:45,211 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 08:25:45,211 INFO ]: Found specification of procedure gotoProc [2018-06-25 08:25:45,211 INFO ]: Found implementation of procedure gotoProc [2018-06-25 08:25:45,211 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 08:25:45,211 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 08:25:45,211 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 [2018-06-25 08:25:46,785 INFO ]: Using library mode [2018-06-25 08:25:46,786 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:25:46 BoogieIcfgContainer [2018-06-25 08:25:46,786 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 08:25:46,788 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 08:25:46,788 INFO ]: Initializing TraceAbstraction... [2018-06-25 08:25:46,793 INFO ]: TraceAbstraction initialized [2018-06-25 08:25:46,793 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:25:44" (1/3) ... [2018-06-25 08:25:46,794 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbff232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 08:25:46, skipping insertion in model container [2018-06-25 08:25:46,794 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:25:45" (2/3) ... [2018-06-25 08:25:46,795 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbff232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 08:25:46, skipping insertion in model container [2018-06-25 08:25:46,795 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:25:46" (3/3) ... [2018-06-25 08:25:46,797 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 08:25:46,807 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 08:25:46,814 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 08:25:46,850 INFO ]: Using default assertion order modulation [2018-06-25 08:25:46,850 INFO ]: Interprodecural is true [2018-06-25 08:25:46,850 INFO ]: Hoare is false [2018-06-25 08:25:46,850 INFO ]: Compute interpolants for FPandBP [2018-06-25 08:25:46,850 INFO ]: Backedges is TWOTRACK [2018-06-25 08:25:46,850 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 08:25:46,850 INFO ]: Difference is false [2018-06-25 08:25:46,850 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 08:25:46,850 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 08:25:46,870 INFO ]: Start isEmpty. Operand 144 states. [2018-06-25 08:25:46,885 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 08:25:46,885 INFO ]: Found error trace [2018-06-25 08:25:46,886 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:25:46,886 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:25:46,890 INFO ]: Analyzing trace with hash 435501815, now seen corresponding path program 1 times [2018-06-25 08:25:46,891 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:25:46,891 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:25:46,938 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:25:46,938 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:25:46,938 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:25:46,982 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:25:47,138 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:25:47,139 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:25:47,139 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:25:47,141 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:25:47,153 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:25:47,153 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:25:47,156 INFO ]: Start difference. First operand 144 states. Second operand 4 states. [2018-06-25 08:25:49,834 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:25:49,834 INFO ]: Finished difference Result 281 states and 547 transitions. [2018-06-25 08:25:49,835 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:25:49,836 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-25 08:25:49,836 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:25:49,883 INFO ]: With dead ends: 281 [2018-06-25 08:25:49,883 INFO ]: Without dead ends: 271 [2018-06-25 08:25:49,885 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 08:25:49,915 INFO ]: Start minimizeSevpa. Operand 271 states. [2018-06-25 08:25:50,022 INFO ]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-06-25 08:25:50,024 INFO ]: Start removeUnreachable. Operand 271 states. [2018-06-25 08:25:50,052 INFO ]: Finished removeUnreachable. Reduced from 271 states to 271 states and 529 transitions. [2018-06-25 08:25:50,053 INFO ]: Start accepts. Automaton has 271 states and 529 transitions. Word has length 8 [2018-06-25 08:25:50,054 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:25:50,054 INFO ]: Abstraction has 271 states and 529 transitions. [2018-06-25 08:25:50,054 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:25:50,054 INFO ]: Start isEmpty. Operand 271 states and 529 transitions. [2018-06-25 08:25:50,058 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 08:25:50,058 INFO ]: Found error trace [2018-06-25 08:25:50,058 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:25:50,058 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:25:50,059 INFO ]: Analyzing trace with hash 303468103, now seen corresponding path program 1 times [2018-06-25 08:25:50,059 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:25:50,059 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:25:50,060 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:25:50,060 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:25:50,060 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:25:50,067 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:25:50,224 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:25:50,224 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:25:50,224 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:25:50,226 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:25:50,226 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:25:50,226 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:25:50,226 INFO ]: Start difference. First operand 271 states and 529 transitions. Second operand 4 states. [2018-06-25 08:25:53,046 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:25:53,047 INFO ]: Finished difference Result 405 states and 792 transitions. [2018-06-25 08:25:53,047 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:25:53,047 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-25 08:25:53,048 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:25:53,075 INFO ]: With dead ends: 405 [2018-06-25 08:25:53,075 INFO ]: Without dead ends: 405 [2018-06-25 08:25:53,076 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 08:25:53,077 INFO ]: Start minimizeSevpa. Operand 405 states. [2018-06-25 08:25:53,213 INFO ]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-06-25 08:25:53,213 INFO ]: Start removeUnreachable. Operand 405 states. [2018-06-25 08:25:53,261 INFO ]: Finished removeUnreachable. Reduced from 405 states to 405 states and 792 transitions. [2018-06-25 08:25:53,261 INFO ]: Start accepts. Automaton has 405 states and 792 transitions. Word has length 8 [2018-06-25 08:25:53,261 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:25:53,261 INFO ]: Abstraction has 405 states and 792 transitions. [2018-06-25 08:25:53,261 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:25:53,261 INFO ]: Start isEmpty. Operand 405 states and 792 transitions. [2018-06-25 08:25:53,292 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-25 08:25:53,292 INFO ]: Found error trace [2018-06-25 08:25:53,292 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:25:53,292 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:25:53,292 INFO ]: Analyzing trace with hash 1330234027, now seen corresponding path program 1 times [2018-06-25 08:25:53,292 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:25:53,292 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:25:53,293 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:25:53,293 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:25:53,293 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:25:53,341 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:25:53,502 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:25:53,502 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:25:53,502 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-25 08:25:53,503 INFO ]: Interpolant automaton has 7 states [2018-06-25 08:25:53,503 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-25 08:25:53,503 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-25 08:25:53,503 INFO ]: Start difference. First operand 405 states and 792 transitions. Second operand 7 states. [2018-06-25 08:26:07,757 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:26:07,757 INFO ]: Finished difference Result 1758 states and 11567 transitions. [2018-06-25 08:26:07,758 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-25 08:26:07,758 INFO ]: Start accepts. Automaton has 7 states. Word has length 18 [2018-06-25 08:26:07,758 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:26:08,590 INFO ]: With dead ends: 1758 [2018-06-25 08:26:08,590 INFO ]: Without dead ends: 1758 [2018-06-25 08:26:08,590 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2018-06-25 08:26:08,591 INFO ]: Start minimizeSevpa. Operand 1758 states. [2018-06-25 08:26:09,763 INFO ]: Finished minimizeSevpa. Reduced states from 1758 to 869. [2018-06-25 08:26:09,764 INFO ]: Start removeUnreachable. Operand 869 states. [2018-06-25 08:26:09,824 INFO ]: Finished removeUnreachable. Reduced from 869 states to 869 states and 2274 transitions. [2018-06-25 08:26:09,824 INFO ]: Start accepts. Automaton has 869 states and 2274 transitions. Word has length 18 [2018-06-25 08:26:09,824 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:26:09,824 INFO ]: Abstraction has 869 states and 2274 transitions. [2018-06-25 08:26:09,824 INFO ]: Interpolant automaton has 7 states. [2018-06-25 08:26:09,825 INFO ]: Start isEmpty. Operand 869 states and 2274 transitions. [2018-06-25 08:26:09,844 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-25 08:26:09,845 INFO ]: Found error trace [2018-06-25 08:26:09,845 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:26:09,845 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:26:09,845 INFO ]: Analyzing trace with hash 585531529, now seen corresponding path program 1 times [2018-06-25 08:26:09,845 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:26:09,845 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:26:09,846 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:26:09,846 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:26:09,846 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:26:09,896 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:26:10,575 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:26:10,608 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:26:10,608 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-25 08:26:10,608 INFO ]: Interpolant automaton has 7 states [2018-06-25 08:26:10,608 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-25 08:26:10,608 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-25 08:26:10,608 INFO ]: Start difference. First operand 869 states and 2274 transitions. Second operand 7 states. [2018-06-25 08:26:27,520 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:26:27,520 INFO ]: Finished difference Result 3545 states and 38911 transitions. [2018-06-25 08:26:27,520 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-25 08:26:27,520 INFO ]: Start accepts. Automaton has 7 states. Word has length 18 [2018-06-25 08:26:27,520 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:26:31,895 INFO ]: With dead ends: 3545 [2018-06-25 08:26:31,896 INFO ]: Without dead ends: 3465 [2018-06-25 08:26:31,896 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2018-06-25 08:26:31,898 INFO ]: Start minimizeSevpa. Operand 3465 states. [2018-06-25 08:26:36,459 INFO ]: Finished minimizeSevpa. Reduced states from 3465 to 1916. [2018-06-25 08:26:36,459 INFO ]: Start removeUnreachable. Operand 1916 states. [2018-06-25 08:26:36,838 INFO ]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 7313 transitions. [2018-06-25 08:26:36,838 INFO ]: Start accepts. Automaton has 1916 states and 7313 transitions. Word has length 18 [2018-06-25 08:26:36,838 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:26:36,838 INFO ]: Abstraction has 1916 states and 7313 transitions. [2018-06-25 08:26:36,838 INFO ]: Interpolant automaton has 7 states. [2018-06-25 08:26:36,838 INFO ]: Start isEmpty. Operand 1916 states and 7313 transitions. [2018-06-25 08:26:36,867 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-25 08:26:36,867 INFO ]: Found error trace [2018-06-25 08:26:36,867 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:26:36,868 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:26:36,868 INFO ]: Analyzing trace with hash 585531529, now seen corresponding path program 1 times [2018-06-25 08:26:36,868 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:26:36,868 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:26:36,870 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:26:36,870 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:26:36,870 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:26:36,896 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:26:37,173 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:26:37,173 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:26:37,173 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 [2018-06-25 08:26:37,181 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:26:37,240 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:26:37,255 INFO ]: Computing forward predicates... [2018-06-25 08:26:37,615 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:26:37,636 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:26:37,636 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-25 08:26:37,636 INFO ]: Interpolant automaton has 12 states [2018-06-25 08:26:37,636 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-25 08:26:37,637 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-25 08:26:37,637 INFO ]: Start difference. First operand 1916 states and 7313 transitions. Second operand 12 states. Received shutdown request... [2018-06-25 08:26:41,971 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-06-25 08:26:42,043 WARN ]: Verification canceled [2018-06-25 08:26:42,047 WARN ]: Timeout [2018-06-25 08:26:42,047 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 08:26:42 BoogieIcfgContainer [2018-06-25 08:26:42,047 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 08:26:42,048 INFO ]: Toolchain (without parser) took 57061.12 ms. Allocated memory was 307.8 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 247.2 MB in the beginning and 495.3 MB in the end (delta: -248.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-25 08:26:42,050 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 307.8 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:26:42,050 INFO ]: ChcToBoogie took 118.85 ms. Allocated memory is still 307.8 MB. Free memory was 247.2 MB in the beginning and 243.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:26:42,051 INFO ]: Boogie Preprocessor took 63.37 ms. Allocated memory is still 307.8 MB. Free memory was 243.2 MB in the beginning and 241.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:26:42,051 INFO ]: RCFGBuilder took 1608.37 ms. Allocated memory was 307.8 MB in the beginning and 327.2 MB in the end (delta: 19.4 MB). Free memory was 240.2 MB in the beginning and 280.6 MB in the end (delta: -40.4 MB). Peak memory consumption was 59.6 MB. Max. memory is 3.6 GB. [2018-06-25 08:26:42,052 INFO ]: TraceAbstraction took 55259.89 ms. Allocated memory was 327.2 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 280.6 MB in the beginning and 495.3 MB in the end (delta: -214.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-25 08:26:42,055 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 307.8 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 118.85 ms. Allocated memory is still 307.8 MB. Free memory was 247.2 MB in the beginning and 243.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 63.37 ms. Allocated memory is still 307.8 MB. Free memory was 243.2 MB in the beginning and 241.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1608.37 ms. Allocated memory was 307.8 MB in the beginning and 327.2 MB in the end (delta: 19.4 MB). Free memory was 240.2 MB in the beginning and 280.6 MB in the end (delta: -40.4 MB). Peak memory consumption was 59.6 MB. Max. memory is 3.6 GB. * TraceAbstraction took 55259.89 ms. Allocated memory was 327.2 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 280.6 MB in the beginning and 495.3 MB in the end (delta: -214.7 MB). Peak memory consumption was 1.1 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 constructing difference of abstraction (1916states) and interpolant automaton (currently 29 states, 12 states before enhancement), while ReachableStatesComputation was computing reachable states (909 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 144 locations, 1 error locations. TIMEOUT Result, 55.2s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 46.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3578 SDtfs, 1246 SDslu, 7343 SDs, 0 SdLazy, 20485 SolverSat, 6525 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1916occurred in iteration=4, 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: 6.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 2438 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 3298 SizeOfPredicates, 7 NumberOfNonLiveVariables, 293 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 16/18 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/fortune-half.23.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_08-26-42-065.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fortune-half.23.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_08-26-42-065.csv Completed graceful shutdown