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/incremental-2lists.39.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 08:33:37,198 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 08:33:37,201 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 08:33:37,214 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 08:33:37,214 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 08:33:37,216 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 08:33:37,217 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 08:33:37,220 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 08:33:37,222 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 08:33:37,224 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 08:33:37,225 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 08:33:37,225 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 08:33:37,226 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 08:33:37,227 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 08:33:37,230 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 08:33:37,230 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 08:33:37,232 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 08:33:37,241 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 08:33:37,242 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 08:33:37,243 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 08:33:37,244 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 08:33:37,248 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 08:33:37,249 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 08:33:37,249 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 08:33:37,249 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 08:33:37,253 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 08:33:37,253 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 08:33:37,254 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 08:33:37,255 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 08:33:37,255 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 08:33:37,256 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 08:33:37,259 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 08:33:37,260 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 08:33:37,260 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 08:33:37,261 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 08:33:37,261 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 08:33:37,284 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 08:33:37,284 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 08:33:37,285 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 08:33:37,285 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 08:33:37,286 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 08:33:37,286 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 08:33:37,287 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 08:33:37,287 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 08:33:37,287 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 08:33:37,287 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 08:33:37,287 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 08:33:37,288 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 08:33:37,288 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:33:37,288 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 08:33:37,288 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 08:33:37,288 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 08:33:37,288 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 08:33:37,289 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 08:33:37,289 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 08:33:37,289 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 08:33:37,289 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 08:33:37,293 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 08:33:37,293 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 08:33:37,331 INFO ]: Repository-Root is: /tmp [2018-06-25 08:33:37,346 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 08:33:37,351 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 08:33:37,354 INFO ]: Initializing SmtParser... [2018-06-25 08:33:37,355 INFO ]: SmtParser initialized [2018-06-25 08:33:37,356 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental-2lists.39.smt2 [2018-06-25 08:33:37,357 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 08:33:37,447 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental-2lists.39.smt2 unknown [2018-06-25 08:33:38,408 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental-2lists.39.smt2 [2018-06-25 08:33:38,417 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 08:33:38,422 INFO ]: Walking toolchain with 4 elements. [2018-06-25 08:33:38,423 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 08:33:38,423 INFO ]: Initializing ChcToBoogie... [2018-06-25 08:33:38,423 INFO ]: ChcToBoogie initialized [2018-06-25 08:33:38,427 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:33:38" (1/1) ... [2018-06-25 08:33:38,571 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:33:38 Unit [2018-06-25 08:33:38,571 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 08:33:38,571 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 08:33:38,571 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 08:33:38,571 INFO ]: Boogie Preprocessor initialized [2018-06-25 08:33:38,593 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:33:38" (1/1) ... [2018-06-25 08:33:38,593 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:33:38" (1/1) ... [2018-06-25 08:33:38,616 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:33:38" (1/1) ... [2018-06-25 08:33:38,616 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:33:38" (1/1) ... [2018-06-25 08:33:38,638 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:33:38" (1/1) ... [2018-06-25 08:33:38,643 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:33:38" (1/1) ... [2018-06-25 08:33:38,649 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:33:38" (1/1) ... [2018-06-25 08:33:38,655 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 08:33:38,656 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 08:33:38,656 INFO ]: Initializing RCFGBuilder... [2018-06-25 08:33:38,656 INFO ]: RCFGBuilder initialized [2018-06-25 08:33:38,657 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:33:38" (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 08:33:38,677 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 08:33:38,677 INFO ]: Found specification of procedure gotoProc [2018-06-25 08:33:38,677 INFO ]: Found implementation of procedure gotoProc [2018-06-25 08:33:38,677 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 08:33:38,677 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 08:33:38,677 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 08:33:41,144 INFO ]: Using library mode [2018-06-25 08:33:41,145 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:33:41 BoogieIcfgContainer [2018-06-25 08:33:41,145 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 08:33:41,146 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 08:33:41,146 INFO ]: Initializing TraceAbstraction... [2018-06-25 08:33:41,149 INFO ]: TraceAbstraction initialized [2018-06-25 08:33:41,149 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:33:38" (1/3) ... [2018-06-25 08:33:41,150 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e2dd73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 08:33:41, skipping insertion in model container [2018-06-25 08:33:41,150 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:33:38" (2/3) ... [2018-06-25 08:33:41,151 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e2dd73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 08:33:41, skipping insertion in model container [2018-06-25 08:33:41,151 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:33:41" (3/3) ... [2018-06-25 08:33:41,152 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 08:33:41,161 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 08:33:41,169 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 08:33:41,212 INFO ]: Using default assertion order modulation [2018-06-25 08:33:41,212 INFO ]: Interprodecural is true [2018-06-25 08:33:41,212 INFO ]: Hoare is false [2018-06-25 08:33:41,212 INFO ]: Compute interpolants for FPandBP [2018-06-25 08:33:41,212 INFO ]: Backedges is TWOTRACK [2018-06-25 08:33:41,212 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 08:33:41,212 INFO ]: Difference is false [2018-06-25 08:33:41,212 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 08:33:41,213 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 08:33:41,231 INFO ]: Start isEmpty. Operand 144 states. [2018-06-25 08:33:41,247 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 08:33:41,247 INFO ]: Found error trace [2018-06-25 08:33:41,248 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:33:41,249 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:33:41,253 INFO ]: Analyzing trace with hash 288211053, now seen corresponding path program 1 times [2018-06-25 08:33:41,255 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:33:41,256 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:33:41,302 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:33:41,302 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:33:41,302 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:33:41,382 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:33:41,593 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:33:41,596 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:33:41,596 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:33:41,598 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:33:41,613 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:33:41,614 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:33:41,616 INFO ]: Start difference. First operand 144 states. Second operand 4 states. [2018-06-25 08:33:44,772 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:33:44,772 INFO ]: Finished difference Result 281 states and 565 transitions. [2018-06-25 08:33:44,772 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:33:44,774 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-25 08:33:44,774 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:33:44,820 INFO ]: With dead ends: 281 [2018-06-25 08:33:44,820 INFO ]: Without dead ends: 271 [2018-06-25 08:33:44,822 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 08:33:44,840 INFO ]: Start minimizeSevpa. Operand 271 states. [2018-06-25 08:33:44,959 INFO ]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-06-25 08:33:44,961 INFO ]: Start removeUnreachable. Operand 271 states. [2018-06-25 08:33:44,985 INFO ]: Finished removeUnreachable. Reduced from 271 states to 271 states and 547 transitions. [2018-06-25 08:33:44,986 INFO ]: Start accepts. Automaton has 271 states and 547 transitions. Word has length 7 [2018-06-25 08:33:44,987 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:33:44,987 INFO ]: Abstraction has 271 states and 547 transitions. [2018-06-25 08:33:44,987 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:33:44,987 INFO ]: Start isEmpty. Operand 271 states and 547 transitions. [2018-06-25 08:33:44,995 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 08:33:44,995 INFO ]: Found error trace [2018-06-25 08:33:44,995 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:33:44,995 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:33:44,995 INFO ]: Analyzing trace with hash -782975577, now seen corresponding path program 1 times [2018-06-25 08:33:44,995 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:33:44,995 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:33:44,996 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:33:44,996 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:33:44,996 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:33:45,003 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:33:45,170 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:33:45,170 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:33:45,170 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:33:45,172 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:33:45,172 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:33:45,172 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:33:45,172 INFO ]: Start difference. First operand 271 states and 547 transitions. Second operand 4 states. [2018-06-25 08:33:47,582 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:33:47,582 INFO ]: Finished difference Result 405 states and 819 transitions. [2018-06-25 08:33:47,583 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:33:47,583 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-25 08:33:47,583 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:33:47,618 INFO ]: With dead ends: 405 [2018-06-25 08:33:47,618 INFO ]: Without dead ends: 405 [2018-06-25 08:33:47,619 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 08:33:47,619 INFO ]: Start minimizeSevpa. Operand 405 states. [2018-06-25 08:33:47,712 INFO ]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-06-25 08:33:47,712 INFO ]: Start removeUnreachable. Operand 405 states. [2018-06-25 08:33:47,730 INFO ]: Finished removeUnreachable. Reduced from 405 states to 405 states and 819 transitions. [2018-06-25 08:33:47,730 INFO ]: Start accepts. Automaton has 405 states and 819 transitions. Word has length 9 [2018-06-25 08:33:47,730 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:33:47,730 INFO ]: Abstraction has 405 states and 819 transitions. [2018-06-25 08:33:47,730 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:33:47,731 INFO ]: Start isEmpty. Operand 405 states and 819 transitions. [2018-06-25 08:33:47,762 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-25 08:33:47,762 INFO ]: Found error trace [2018-06-25 08:33:47,762 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:33:47,762 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:33:47,763 INFO ]: Analyzing trace with hash 1382816036, now seen corresponding path program 1 times [2018-06-25 08:33:47,763 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:33:47,763 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:33:47,763 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:33:47,763 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:33:47,763 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:33:47,821 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:33:48,492 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:33:48,493 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:33:48,493 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 08:33:48,510 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:33:48,590 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:33:48,600 INFO ]: Computing forward predicates... [2018-06-25 08:33:49,299 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:33:49,332 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:33:49,332 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-25 08:33:49,368 INFO ]: Interpolant automaton has 12 states [2018-06-25 08:33:49,369 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-25 08:33:49,369 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-25 08:33:49,369 INFO ]: Start difference. First operand 405 states and 819 transitions. Second operand 12 states. Received shutdown request... [2018-06-25 08:34:39,746 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-06-25 08:34:39,746 WARN ]: Verification canceled [2018-06-25 08:34:39,752 WARN ]: Timeout [2018-06-25 08:34:39,752 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 08:34:39 BoogieIcfgContainer [2018-06-25 08:34:39,752 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 08:34:39,754 INFO ]: Toolchain (without parser) took 61336.43 ms. Allocated memory was 321.4 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 284.9 MB in the beginning and 684.4 MB in the end (delta: -399.5 MB). Peak memory consumption was 661.2 MB. Max. memory is 3.6 GB. [2018-06-25 08:34:39,755 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:34:39,756 INFO ]: ChcToBoogie took 148.28 ms. Allocated memory is still 321.4 MB. Free memory was 284.9 MB in the beginning and 278.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:34:39,756 INFO ]: Boogie Preprocessor took 84.06 ms. Allocated memory is still 321.4 MB. Free memory was 278.9 MB in the beginning and 275.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:34:39,756 INFO ]: RCFGBuilder took 2489.07 ms. Allocated memory was 321.4 MB in the beginning and 353.4 MB in the end (delta: 32.0 MB). Free memory was 275.9 MB in the beginning and 244.7 MB in the end (delta: 31.2 MB). Peak memory consumption was 104.8 MB. Max. memory is 3.6 GB. [2018-06-25 08:34:39,759 INFO ]: TraceAbstraction took 58606.10 ms. Allocated memory was 353.4 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 244.7 MB in the beginning and 684.4 MB in the end (delta: -439.7 MB). Peak memory consumption was 589.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:34:39,762 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 148.28 ms. Allocated memory is still 321.4 MB. Free memory was 284.9 MB in the beginning and 278.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 84.06 ms. Allocated memory is still 321.4 MB. Free memory was 278.9 MB in the beginning and 275.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 2489.07 ms. Allocated memory was 321.4 MB in the beginning and 353.4 MB in the end (delta: 32.0 MB). Free memory was 275.9 MB in the beginning and 244.7 MB in the end (delta: 31.2 MB). Peak memory consumption was 104.8 MB. Max. memory is 3.6 GB. * TraceAbstraction took 58606.10 ms. Allocated memory was 353.4 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 244.7 MB in the beginning and 684.4 MB in the end (delta: -439.7 MB). Peak memory consumption was 589.0 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 constructing difference of abstraction (405states) and interpolant automaton (currently 51 states, 12 states before enhancement), while ReachableStatesComputation was computing reachable states (4498 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 144 locations, 1 error locations. TIMEOUT Result, 58.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 56.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6730 SDtfs, 1088 SDslu, 30953 SDs, 0 SdLazy, 45975 SolverSat, 6453 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=405occurred 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: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1706 SizeOfPredicates, 7 NumberOfNonLiveVariables, 493 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 8/10 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/incremental-2lists.39.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_08-34-39-785.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/incremental-2lists.39.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_08-34-39-785.csv Completed graceful shutdown