java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_even_odd_abstracted.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:10:20,389 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:10:20,391 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:10:20,402 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:10:20,402 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:10:20,403 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:10:20,407 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:10:20,409 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:10:20,410 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:10:20,411 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:10:20,413 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:10:20,413 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:10:20,414 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:10:20,415 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:10:20,418 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:10:20,419 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:10:20,420 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:10:20,433 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:10:20,435 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:10:20,435 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:10:20,436 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:10:20,438 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:10:20,439 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:10:20,439 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:10:20,440 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:10:20,441 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:10:20,446 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:10:20,447 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:10:20,448 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:10:20,448 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:10:20,449 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:10:20,449 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:10:20,449 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:10:20,450 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:10:20,451 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:10:20,457 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:10:20,478 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:10:20,479 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:10:20,479 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:10:20,479 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:10:20,480 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:10:20,480 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:10:20,481 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:10:20,481 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:10:20,481 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:10:20,481 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:10:20,481 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:10:20,482 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:10:20,483 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:10:20,483 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:10:20,483 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:10:20,483 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:10:20,484 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:10:20,484 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:10:20,484 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:10:20,484 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:10:20,484 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:10:20,487 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:10:20,488 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:10:20,537 INFO ]: Repository-Root is: /tmp [2018-06-24 21:10:20,556 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:10:20,562 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:10:20,563 INFO ]: Initializing SmtParser... [2018-06-24 21:10:20,564 INFO ]: SmtParser initialized [2018-06-24 21:10:20,564 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_even_odd_abstracted.smt2 [2018-06-24 21:10:20,566 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 [2018-06-24 21:10:20,650 INFO ]: Executing SMT file /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_even_odd_abstracted.smt2 unknown [2018-06-24 21:10:20,820 INFO ]: Succesfully executed SMT file /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_even_odd_abstracted.smt2 [2018-06-24 21:10:20,832 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:10:20,843 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:10:20,843 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:10:20,843 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:10:20,843 INFO ]: ChcToBoogie initialized [2018-06-24 21:10:20,846 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:10:20" (1/1) ... [2018-06-24 21:10:20,892 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:20 Unit [2018-06-24 21:10:20,892 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:10:20,892 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:10:20,892 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:10:20,892 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:10:20,911 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:20" (1/1) ... [2018-06-24 21:10:20,911 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:20" (1/1) ... [2018-06-24 21:10:20,916 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:20" (1/1) ... [2018-06-24 21:10:20,917 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:20" (1/1) ... [2018-06-24 21:10:20,919 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:20" (1/1) ... [2018-06-24 21:10:20,921 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:20" (1/1) ... [2018-06-24 21:10:20,922 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:20" (1/1) ... [2018-06-24 21:10:20,923 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:10:20,924 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:10:20,924 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:10:20,924 INFO ]: RCFGBuilder initialized [2018-06-24 21:10:20,924 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:20" (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) [2018-06-24 21:10:20,938 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:10:20,938 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:10:20,938 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:10:20,938 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:10:20,938 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:10:20,938 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 [2018-06-24 21:10:21,159 INFO ]: Using library mode [2018-06-24 21:10:21,159 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:10:21 BoogieIcfgContainer [2018-06-24 21:10:21,159 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:10:21,160 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:10:21,160 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:10:21,161 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:10:21,167 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:10:21" (1/1) ... [2018-06-24 21:10:21,187 INFO ]: Initial Icfg 13 locations, 15 edges [2018-06-24 21:10:21,197 INFO ]: Using Remove infeasible edges [2018-06-24 21:10:21,198 INFO ]: Using Maximize final states [2018-06-24 21:10:21,198 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:10:21,199 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:10:21,200 INFO ]: Using Remove sink states [2018-06-24 21:10:21,201 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:10:21,201 INFO ]: Using Use SBE [2018-06-24 21:10:21,212 INFO ]: SBE split 0 edges [2018-06-24 21:10:21,217 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 21:10:21,219 INFO ]: 0 new accepting states [2018-06-24 21:10:21,305 INFO ]: Removed 14 edges and 5 locations by large block encoding [2018-06-24 21:10:21,307 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:10:21,308 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:10:21,308 INFO ]: 0 new accepting states [2018-06-24 21:10:21,308 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:10:21,309 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:10:21,309 INFO ]: Encoded RCFG 6 locations, 8 edges [2018-06-24 21:10:21,309 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:10:21 BasicIcfg [2018-06-24 21:10:21,309 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:10:21,310 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:10:21,310 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:10:21,314 INFO ]: TraceAbstraction initialized [2018-06-24 21:10:21,314 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:10:20" (1/4) ... [2018-06-24 21:10:21,315 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae937ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:10:21, skipping insertion in model container [2018-06-24 21:10:21,315 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:20" (2/4) ... [2018-06-24 21:10:21,316 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae937ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:10:21, skipping insertion in model container [2018-06-24 21:10:21,316 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:10:21" (3/4) ... [2018-06-24 21:10:21,316 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae937ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:10:21, skipping insertion in model container [2018-06-24 21:10:21,316 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:10:21" (4/4) ... [2018-06-24 21:10:21,319 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:10:21,331 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:10:21,341 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:10:21,390 INFO ]: Using default assertion order modulation [2018-06-24 21:10:21,390 INFO ]: Interprodecural is true [2018-06-24 21:10:21,390 INFO ]: Hoare is false [2018-06-24 21:10:21,390 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:10:21,390 INFO ]: Backedges is TWOTRACK [2018-06-24 21:10:21,390 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:10:21,390 INFO ]: Difference is false [2018-06-24 21:10:21,390 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:10:21,390 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:10:21,403 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 21:10:21,427 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:10:21,427 INFO ]: Found error trace [2018-06-24 21:10:21,428 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:10:21,428 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:10:21,435 INFO ]: Analyzing trace with hash 31924865, now seen corresponding path program 1 times [2018-06-24 21:10:21,437 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:10:21,437 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:10:21,478 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:10:21,478 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:10:21,478 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:10:21,510 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:10:21,561 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:10:21,562 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:10:21,563 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:10:21,564 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:10:21,574 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:10:21,574 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:10:21,577 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 21:10:21,632 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:10:21,632 INFO ]: Finished difference Result 7 states and 10 transitions. [2018-06-24 21:10:21,633 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:10:21,634 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:10:21,634 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:10:21,641 INFO ]: With dead ends: 7 [2018-06-24 21:10:21,641 INFO ]: Without dead ends: 7 [2018-06-24 21:10:21,642 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:10:21,657 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:10:21,675 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:10:21,676 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:10:21,677 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-06-24 21:10:21,678 INFO ]: Start accepts. Automaton has 7 states and 10 transitions. Word has length 5 [2018-06-24 21:10:21,678 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:10:21,678 INFO ]: Abstraction has 7 states and 10 transitions. [2018-06-24 21:10:21,678 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:10:21,678 INFO ]: Start isEmpty. Operand 7 states and 10 transitions. [2018-06-24 21:10:21,678 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:10:21,678 INFO ]: Found error trace [2018-06-24 21:10:21,678 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:10:21,678 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:10:21,678 INFO ]: Analyzing trace with hash 989765097, now seen corresponding path program 1 times [2018-06-24 21:10:21,678 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:10:21,678 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:10:21,680 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:10:21,680 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:10:21,680 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:10:21,710 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:10:21,779 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:10:21,779 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:10:21,779 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 [2018-06-24 21:10:21,786 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:10:21,813 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:10:21,819 INFO ]: Computing forward predicates... [2018-06-24 21:10:21,840 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:10:21,859 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:10:21,859 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-24 21:10:21,860 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:10:21,860 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:10:21,860 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:10:21,860 INFO ]: Start difference. First operand 7 states and 10 transitions. Second operand 5 states. [2018-06-24 21:10:22,024 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:10:22,024 INFO ]: Finished difference Result 11 states and 18 transitions. [2018-06-24 21:10:22,026 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 21:10:22,026 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 21:10:22,026 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:10:22,028 INFO ]: With dead ends: 11 [2018-06-24 21:10:22,028 INFO ]: Without dead ends: 11 [2018-06-24 21:10:22,029 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:10:22,029 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 21:10:22,031 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-06-24 21:10:22,031 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 21:10:22,031 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 15 transitions. [2018-06-24 21:10:22,031 INFO ]: Start accepts. Automaton has 9 states and 15 transitions. Word has length 6 [2018-06-24 21:10:22,031 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:10:22,031 INFO ]: Abstraction has 9 states and 15 transitions. [2018-06-24 21:10:22,031 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:10:22,031 INFO ]: Start isEmpty. Operand 9 states and 15 transitions. [2018-06-24 21:10:22,031 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:10:22,031 INFO ]: Found error trace [2018-06-24 21:10:22,031 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:10:22,032 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:10:22,032 INFO ]: Analyzing trace with hash 989794888, now seen corresponding path program 1 times [2018-06-24 21:10:22,032 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:10:22,032 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:10:22,033 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:10:22,033 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:10:22,033 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:10:22,046 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:10:22,354 WARN ]: Spent 179.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-06-24 21:10:22,355 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:10:22,355 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:10:22,355 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:10:22,361 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:10:22,375 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:10:22,376 INFO ]: Computing forward predicates... [2018-06-24 21:10:22,434 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:10:22,453 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:10:22,453 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-24 21:10:22,453 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:10:22,453 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:10:22,453 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:10:22,453 INFO ]: Start difference. First operand 9 states and 15 transitions. Second operand 5 states. [2018-06-24 21:10:22,573 WARN ]: Spent 108.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-06-24 21:10:22,752 WARN ]: Spent 155.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-06-24 21:10:22,767 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:10:22,767 INFO ]: Finished difference Result 12 states and 21 transitions. [2018-06-24 21:10:22,768 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:10:22,768 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 21:10:22,768 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:10:22,768 INFO ]: With dead ends: 12 [2018-06-24 21:10:22,768 INFO ]: Without dead ends: 12 [2018-06-24 21:10:22,769 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:10:22,769 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-24 21:10:22,770 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-06-24 21:10:22,770 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-24 21:10:22,771 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 19 transitions. [2018-06-24 21:10:22,771 INFO ]: Start accepts. Automaton has 11 states and 19 transitions. Word has length 6 [2018-06-24 21:10:22,771 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:10:22,771 INFO ]: Abstraction has 11 states and 19 transitions. [2018-06-24 21:10:22,771 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:10:22,772 INFO ]: Start isEmpty. Operand 11 states and 19 transitions. [2018-06-24 21:10:22,772 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:10:22,772 INFO ]: Found error trace [2018-06-24 21:10:22,772 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:10:22,772 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:10:22,772 INFO ]: Analyzing trace with hash 990688618, now seen corresponding path program 1 times [2018-06-24 21:10:22,772 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:10:22,772 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:10:22,773 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:10:22,773 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:10:22,773 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:10:22,782 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:10:22,787 ERROR]: Symbol error in Interpolant 1. Subtree only symbols: [(gotoProc_hbv_False_3_Int_0 Int)]. Non-subtree only symbols: []. [2018-06-24 21:10:22,808 ERROR]: Symbol error in Interpolant 2. Subtree only symbols: [(gotoProc_hbv_False_3_Int_0 Int)]. Non-subtree only symbols: []. [2018-06-24 21:10:22,815 FATAL]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:1007) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:210) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:228) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:410) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:425) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:309) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:151) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-06-24 21:10:22,818 INFO ]: Toolchain (without parser) took 1985.08 ms. Allocated memory is still 310.4 MB. Free memory was 266.8 MB in the beginning and 194.4 MB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 3.6 GB. [2018-06-24 21:10:22,819 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 310.4 MB. Free memory is still 274.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:10:22,819 INFO ]: ChcToBoogie took 48.81 ms. Allocated memory is still 310.4 MB. Free memory was 266.8 MB in the beginning and 264.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:10:22,822 INFO ]: Boogie Preprocessor took 30.79 ms. Allocated memory is still 310.4 MB. Free memory was 264.8 MB in the beginning and 262.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:10:22,823 INFO ]: RCFGBuilder took 235.72 ms. Allocated memory is still 310.4 MB. Free memory was 262.8 MB in the beginning and 254.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:10:22,823 INFO ]: BlockEncodingV2 took 149.51 ms. Allocated memory is still 310.4 MB. Free memory was 254.8 MB in the beginning and 248.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:10:22,824 INFO ]: TraceAbstraction took 1506.97 ms. Allocated memory is still 310.4 MB. Free memory was 248.8 MB in the beginning and 194.4 MB in the end (delta: 54.4 MB). Peak memory consumption was 54.4 MB. Max. memory is 3.6 GB. [2018-06-24 21:10:22,833 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 13 locations, 15 edges - StatisticsResult: Encoded RCFG 6 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 310.4 MB. Free memory is still 274.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 48.81 ms. Allocated memory is still 310.4 MB. Free memory was 266.8 MB in the beginning and 264.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 30.79 ms. Allocated memory is still 310.4 MB. Free memory was 264.8 MB in the beginning and 262.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 235.72 ms. Allocated memory is still 310.4 MB. Free memory was 262.8 MB in the beginning and 254.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 149.51 ms. Allocated memory is still 310.4 MB. Free memory was 254.8 MB in the beginning and 248.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1506.97 ms. Allocated memory is still 310.4 MB. Free memory was 248.8 MB in the beginning and 194.4 MB in the end (delta: 54.4 MB). Peak memory consumption was 54.4 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:1007) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_fill1_even_odd_abstracted.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-10-22-848.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_fill1_even_odd_abstracted.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-10-22-848.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_fill1_even_odd_abstracted.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-10-22-848.csv Received shutdown request...