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/graham-scan-full.33.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 08:30:28,436 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 08:30:28,438 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 08:30:28,451 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 08:30:28,451 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 08:30:28,452 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 08:30:28,453 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 08:30:28,457 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 08:30:28,459 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 08:30:28,461 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 08:30:28,462 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 08:30:28,462 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 08:30:28,463 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 08:30:28,464 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 08:30:28,464 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 08:30:28,468 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 08:30:28,469 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 08:30:28,479 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 08:30:28,481 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 08:30:28,482 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 08:30:28,483 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 08:30:28,487 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 08:30:28,487 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 08:30:28,488 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 08:30:28,488 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 08:30:28,489 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 08:30:28,490 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 08:30:28,492 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 08:30:28,493 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 08:30:28,493 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 08:30:28,494 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 08:30:28,495 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 08:30:28,495 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 08:30:28,495 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 08:30:28,496 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 08:30:28,496 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 08:30:28,515 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 08:30:28,515 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 08:30:28,516 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 08:30:28,516 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 08:30:28,519 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 08:30:28,519 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 08:30:28,519 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 08:30:28,519 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 08:30:28,520 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 08:30:28,520 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 08:30:28,520 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 08:30:28,520 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 08:30:28,520 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:30:28,520 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 08:30:28,521 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 08:30:28,521 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 08:30:28,521 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 08:30:28,521 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 08:30:28,521 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 08:30:28,521 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 08:30:28,522 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 08:30:28,524 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 08:30:28,524 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 08:30:28,567 INFO ]: Repository-Root is: /tmp [2018-06-25 08:30:28,581 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 08:30:28,584 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 08:30:28,585 INFO ]: Initializing SmtParser... [2018-06-25 08:30:28,585 INFO ]: SmtParser initialized [2018-06-25 08:30:28,586 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.33.smt2 [2018-06-25 08:30:28,587 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 08:30:28,678 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.33.smt2 unknown [2018-06-25 08:30:29,122 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.33.smt2 [2018-06-25 08:30:29,126 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 08:30:29,133 INFO ]: Walking toolchain with 4 elements. [2018-06-25 08:30:29,134 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 08:30:29,134 INFO ]: Initializing ChcToBoogie... [2018-06-25 08:30:29,134 INFO ]: ChcToBoogie initialized [2018-06-25 08:30:29,139 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:30:29" (1/1) ... [2018-06-25 08:30:29,252 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:30:29 Unit [2018-06-25 08:30:29,252 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 08:30:29,252 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 08:30:29,252 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 08:30:29,253 INFO ]: Boogie Preprocessor initialized [2018-06-25 08:30:29,273 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:30:29" (1/1) ... [2018-06-25 08:30:29,273 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:30:29" (1/1) ... [2018-06-25 08:30:29,293 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:30:29" (1/1) ... [2018-06-25 08:30:29,293 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:30:29" (1/1) ... [2018-06-25 08:30:29,324 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:30:29" (1/1) ... [2018-06-25 08:30:29,329 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:30:29" (1/1) ... [2018-06-25 08:30:29,341 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:30:29" (1/1) ... [2018-06-25 08:30:29,345 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 08:30:29,346 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 08:30:29,346 INFO ]: Initializing RCFGBuilder... [2018-06-25 08:30:29,346 INFO ]: RCFGBuilder initialized [2018-06-25 08:30:29,346 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:30:29" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:30:29,359 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 08:30:29,359 INFO ]: Found specification of procedure gotoProc [2018-06-25 08:30:29,359 INFO ]: Found implementation of procedure gotoProc [2018-06-25 08:30:29,359 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 08:30:29,359 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 08:30:29,359 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 08:30:30,911 INFO ]: Using library mode [2018-06-25 08:30:30,912 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:30:30 BoogieIcfgContainer [2018-06-25 08:30:30,912 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 08:30:30,913 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 08:30:30,913 INFO ]: Initializing TraceAbstraction... [2018-06-25 08:30:30,916 INFO ]: TraceAbstraction initialized [2018-06-25 08:30:30,916 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:30:29" (1/3) ... [2018-06-25 08:30:30,918 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136753b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 08:30:30, skipping insertion in model container [2018-06-25 08:30:30,918 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:30:29" (2/3) ... [2018-06-25 08:30:30,918 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136753b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 08:30:30, skipping insertion in model container [2018-06-25 08:30:30,918 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:30:30" (3/3) ... [2018-06-25 08:30:30,920 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 08:30:30,930 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 08:30:30,937 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 08:30:30,976 INFO ]: Using default assertion order modulation [2018-06-25 08:30:30,977 INFO ]: Interprodecural is true [2018-06-25 08:30:30,977 INFO ]: Hoare is false [2018-06-25 08:30:30,977 INFO ]: Compute interpolants for FPandBP [2018-06-25 08:30:30,977 INFO ]: Backedges is TWOTRACK [2018-06-25 08:30:30,977 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 08:30:30,977 INFO ]: Difference is false [2018-06-25 08:30:30,977 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 08:30:30,977 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 08:30:30,996 INFO ]: Start isEmpty. Operand 145 states. [2018-06-25 08:30:31,022 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 08:30:31,022 INFO ]: Found error trace [2018-06-25 08:30:31,023 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:30:31,023 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:30:31,029 INFO ]: Analyzing trace with hash -570017042, now seen corresponding path program 1 times [2018-06-25 08:30:31,031 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:30:31,031 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:30:31,073 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:30:31,073 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:30:31,073 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:30:31,160 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:30:31,402 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:30:31,404 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:30:31,404 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:30:31,405 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:30:31,415 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:30:31,416 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:30:31,417 INFO ]: Start difference. First operand 145 states. Second operand 4 states. [2018-06-25 08:30:34,407 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:30:34,407 INFO ]: Finished difference Result 283 states and 547 transitions. [2018-06-25 08:30:34,457 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:30:34,458 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-25 08:30:34,459 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:30:34,502 INFO ]: With dead ends: 283 [2018-06-25 08:30:34,502 INFO ]: Without dead ends: 269 [2018-06-25 08:30:34,504 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 08:30:34,523 INFO ]: Start minimizeSevpa. Operand 269 states. [2018-06-25 08:30:34,639 INFO ]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-06-25 08:30:34,640 INFO ]: Start removeUnreachable. Operand 269 states. [2018-06-25 08:30:34,665 INFO ]: Finished removeUnreachable. Reduced from 269 states to 269 states and 523 transitions. [2018-06-25 08:30:34,667 INFO ]: Start accepts. Automaton has 269 states and 523 transitions. Word has length 7 [2018-06-25 08:30:34,668 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:30:34,668 INFO ]: Abstraction has 269 states and 523 transitions. [2018-06-25 08:30:34,668 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:30:34,668 INFO ]: Start isEmpty. Operand 269 states and 523 transitions. [2018-06-25 08:30:34,675 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 08:30:34,675 INFO ]: Found error trace [2018-06-25 08:30:34,675 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:30:34,675 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:30:34,675 INFO ]: Analyzing trace with hash 1904355639, now seen corresponding path program 1 times [2018-06-25 08:30:34,675 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:30:34,675 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:30:34,676 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:30:34,676 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:30:34,676 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:30:34,683 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:30:34,848 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:30:34,848 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:30:34,848 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:30:34,849 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:30:34,849 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:30:34,849 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:30:34,849 INFO ]: Start difference. First operand 269 states and 523 transitions. Second operand 4 states. [2018-06-25 08:30:36,145 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:30:36,145 INFO ]: Finished difference Result 402 states and 783 transitions. [2018-06-25 08:30:36,145 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:30:36,146 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-25 08:30:36,146 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:30:36,171 INFO ]: With dead ends: 402 [2018-06-25 08:30:36,171 INFO ]: Without dead ends: 402 [2018-06-25 08:30:36,172 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 08:30:36,173 INFO ]: Start minimizeSevpa. Operand 402 states. [2018-06-25 08:30:36,238 INFO ]: Finished minimizeSevpa. Reduced states from 402 to 402. [2018-06-25 08:30:36,239 INFO ]: Start removeUnreachable. Operand 402 states. [2018-06-25 08:30:36,255 INFO ]: Finished removeUnreachable. Reduced from 402 states to 402 states and 783 transitions. [2018-06-25 08:30:36,255 INFO ]: Start accepts. Automaton has 402 states and 783 transitions. Word has length 9 [2018-06-25 08:30:36,255 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:30:36,255 INFO ]: Abstraction has 402 states and 783 transitions. [2018-06-25 08:30:36,255 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:30:36,255 INFO ]: Start isEmpty. Operand 402 states and 783 transitions. [2018-06-25 08:30:36,277 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-25 08:30:36,277 INFO ]: Found error trace [2018-06-25 08:30:36,277 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:30:36,277 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:30:36,277 INFO ]: Analyzing trace with hash 1416879016, now seen corresponding path program 1 times [2018-06-25 08:30:36,277 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:30:36,277 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:30:36,278 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:30:36,278 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:30:36,278 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:30:36,343 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:30:36,614 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:30:36,614 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:30:36,614 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-25 08:30:36,615 INFO ]: Interpolant automaton has 7 states [2018-06-25 08:30:36,615 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-25 08:30:36,615 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-25 08:30:36,615 INFO ]: Start difference. First operand 402 states and 783 transitions. Second operand 7 states. [2018-06-25 08:30:44,333 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:30:44,333 INFO ]: Finished difference Result 1649 states and 8574 transitions. [2018-06-25 08:30:44,333 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-25 08:30:44,333 INFO ]: Start accepts. Automaton has 7 states. Word has length 17 [2018-06-25 08:30:44,334 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:30:44,838 INFO ]: With dead ends: 1649 [2018-06-25 08:30:44,838 INFO ]: Without dead ends: 1649 [2018-06-25 08:30:44,838 INFO ]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2018-06-25 08:30:44,839 INFO ]: Start minimizeSevpa. Operand 1649 states. [2018-06-25 08:30:45,618 INFO ]: Finished minimizeSevpa. Reduced states from 1649 to 777. [2018-06-25 08:30:45,619 INFO ]: Start removeUnreachable. Operand 777 states. [2018-06-25 08:30:45,640 INFO ]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1689 transitions. [2018-06-25 08:30:45,640 INFO ]: Start accepts. Automaton has 777 states and 1689 transitions. Word has length 17 [2018-06-25 08:30:45,640 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:30:45,640 INFO ]: Abstraction has 777 states and 1689 transitions. [2018-06-25 08:30:45,640 INFO ]: Interpolant automaton has 7 states. [2018-06-25 08:30:45,640 INFO ]: Start isEmpty. Operand 777 states and 1689 transitions. [2018-06-25 08:30:45,679 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-25 08:30:45,679 INFO ]: Found error trace [2018-06-25 08:30:45,679 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:30:45,679 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:30:45,679 INFO ]: Analyzing trace with hash 1419887907, now seen corresponding path program 1 times [2018-06-25 08:30:45,679 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:30:45,679 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:30:45,680 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:30:45,680 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:30:45,680 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:30:45,717 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:30:46,293 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:30:46,293 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:30:46,293 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-25 08:30:46,317 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 08:30:46,399 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:30:46,412 INFO ]: Computing forward predicates... [2018-06-25 08:30:46,912 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:30:46,934 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:30:46,934 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-25 08:30:46,934 INFO ]: Interpolant automaton has 12 states [2018-06-25 08:30:46,934 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-25 08:30:46,934 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-25 08:30:46,934 INFO ]: Start difference. First operand 777 states and 1689 transitions. Second operand 12 states. [2018-06-25 08:30:47,379 WARN ]: Spent 254.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 Received shutdown request... [2018-06-25 08:31:30,739 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-06-25 08:31:30,739 WARN ]: Verification canceled [2018-06-25 08:31:30,743 WARN ]: Timeout [2018-06-25 08:31:30,744 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 08:31:30 BoogieIcfgContainer [2018-06-25 08:31:30,744 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 08:31:30,745 INFO ]: Toolchain (without parser) took 61617.64 ms. Allocated memory was 309.9 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 252.3 MB in the beginning and 716.9 MB in the end (delta: -464.6 MB). Peak memory consumption was 894.9 MB. Max. memory is 3.6 GB. [2018-06-25 08:31:30,747 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 309.9 MB. Free memory is still 275.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:31:30,747 INFO ]: ChcToBoogie took 118.28 ms. Allocated memory is still 309.9 MB. Free memory was 252.3 MB in the beginning and 248.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:31:30,748 INFO ]: Boogie Preprocessor took 92.70 ms. Allocated memory is still 309.9 MB. Free memory was 248.3 MB in the beginning and 245.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:31:30,748 INFO ]: RCFGBuilder took 1566.23 ms. Allocated memory was 309.9 MB in the beginning and 324.5 MB in the end (delta: 14.7 MB). Free memory was 245.3 MB in the beginning and 284.6 MB in the end (delta: -39.3 MB). Peak memory consumption was 62.8 MB. Max. memory is 3.6 GB. [2018-06-25 08:31:30,750 INFO ]: TraceAbstraction took 59830.77 ms. Allocated memory was 324.5 MB in the beginning and 1.7 GB in the end (delta: 1.3 GB). Free memory was 284.6 MB in the beginning and 716.9 MB in the end (delta: -432.3 MB). Peak memory consumption was 912.5 MB. Max. memory is 3.6 GB. [2018-06-25 08:31:30,762 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 309.9 MB. Free memory is still 275.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 118.28 ms. Allocated memory is still 309.9 MB. Free memory was 252.3 MB in the beginning and 248.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 92.70 ms. Allocated memory is still 309.9 MB. Free memory was 248.3 MB in the beginning and 245.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1566.23 ms. Allocated memory was 309.9 MB in the beginning and 324.5 MB in the end (delta: 14.7 MB). Free memory was 245.3 MB in the beginning and 284.6 MB in the end (delta: -39.3 MB). Peak memory consumption was 62.8 MB. Max. memory is 3.6 GB. * TraceAbstraction took 59830.77 ms. Allocated memory was 324.5 MB in the beginning and 1.7 GB in the end (delta: 1.3 GB). Free memory was 284.6 MB in the beginning and 716.9 MB in the end (delta: -432.3 MB). Peak memory consumption was 912.5 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 (777states) and interpolant automaton (currently 53 states, 12 states before enhancement), while ReachableStatesComputation was computing reachable states (7651 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 145 locations, 1 error locations. TIMEOUT Result, 59.7s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 56.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8573 SDtfs, 1317 SDslu, 35139 SDs, 0 SdLazy, 42799 SolverSat, 7553 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=777occurred in iteration=3, 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: 1.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 872 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 2100 SizeOfPredicates, 6 NumberOfNonLiveVariables, 420 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 12/14 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/graham-scan-full.33.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_08-31-30-775.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham-scan-full.33.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_08-31-30-775.csv Completed graceful shutdown