java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i '/storage/chc-comp/llreve-bench/smt2/faulty__limit1!.smt2' -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 02:09:02,303 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 02:09:02,305 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 02:09:02,321 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 02:09:02,321 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 02:09:02,323 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 02:09:02,324 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 02:09:02,329 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 02:09:02,332 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 02:09:02,333 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 02:09:02,334 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 02:09:02,334 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 02:09:02,335 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 02:09:02,336 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 02:09:02,339 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 02:09:02,340 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 02:09:02,354 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 02:09:02,356 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 02:09:02,357 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 02:09:02,358 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 02:09:02,359 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 02:09:02,361 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 02:09:02,362 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 02:09:02,362 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 02:09:02,366 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 02:09:02,368 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 02:09:02,368 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 02:09:02,369 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 02:09:02,373 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 02:09:02,373 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 02:09:02,374 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 02:09:02,374 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 02:09:02,375 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 02:09:02,375 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 02:09:02,377 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 02:09:02,377 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 02:09:02,398 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 02:09:02,402 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 02:09:02,402 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 02:09:02,402 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 02:09:02,403 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 02:09:02,404 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 02:09:02,404 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 02:09:02,404 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 02:09:02,404 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 02:09:02,404 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 02:09:02,405 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 02:09:02,405 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 02:09:02,406 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 02:09:02,406 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 02:09:02,406 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 02:09:02,406 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 02:09:02,406 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 02:09:02,408 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 02:09:02,408 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 02:09:02,467 INFO ]: Repository-Root is: /tmp [2018-06-22 02:09:02,488 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 02:09:02,495 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 02:09:02,496 INFO ]: Initializing SmtParser... [2018-06-22 02:09:02,497 INFO ]: SmtParser initialized [2018-06-22 02:09:02,497 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/faulty__limit1!.smt2 [2018-06-22 02:09:02,499 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 02:09:02,592 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/faulty__limit1!.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@e38f228 [2018-06-22 02:09:02,872 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/faulty__limit1!.smt2 [2018-06-22 02:09:02,877 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 02:09:02,884 INFO ]: Walking toolchain with 4 elements. [2018-06-22 02:09:02,885 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 02:09:02,885 INFO ]: Initializing ChcToBoogie... [2018-06-22 02:09:02,885 INFO ]: ChcToBoogie initialized [2018-06-22 02:09:02,889 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:09:02" (1/1) ... [2018-06-22 02:09:02,956 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:02 Unit [2018-06-22 02:09:02,956 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 02:09:02,958 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 02:09:02,958 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 02:09:02,958 INFO ]: Boogie Preprocessor initialized [2018-06-22 02:09:02,981 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:02" (1/1) ... [2018-06-22 02:09:02,981 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:02" (1/1) ... [2018-06-22 02:09:02,993 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:02" (1/1) ... [2018-06-22 02:09:02,993 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:02" (1/1) ... [2018-06-22 02:09:02,998 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:02" (1/1) ... [2018-06-22 02:09:03,003 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:02" (1/1) ... [2018-06-22 02:09:03,004 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:02" (1/1) ... [2018-06-22 02:09:03,007 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 02:09:03,007 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 02:09:03,007 INFO ]: Initializing RCFGBuilder... [2018-06-22 02:09:03,007 INFO ]: RCFGBuilder initialized [2018-06-22 02:09:03,008 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:02" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 02:09:03,025 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 02:09:03,025 INFO ]: Found specification of procedure gotoProc [2018-06-22 02:09:03,025 INFO ]: Found implementation of procedure gotoProc [2018-06-22 02:09:03,025 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 02:09:03,026 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 02:09:03,026 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 02:09:03,443 INFO ]: Using library mode [2018-06-22 02:09:03,444 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:09:03 BoogieIcfgContainer [2018-06-22 02:09:03,444 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 02:09:03,445 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 02:09:03,445 INFO ]: Initializing TraceAbstraction... [2018-06-22 02:09:03,449 INFO ]: TraceAbstraction initialized [2018-06-22 02:09:03,449 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:09:02" (1/3) ... [2018-06-22 02:09:03,450 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385803f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:09:03, skipping insertion in model container [2018-06-22 02:09:03,450 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:02" (2/3) ... [2018-06-22 02:09:03,450 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385803f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:09:03, skipping insertion in model container [2018-06-22 02:09:03,450 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:09:03" (3/3) ... [2018-06-22 02:09:03,452 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 02:09:03,462 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 02:09:03,472 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 02:09:03,536 INFO ]: Using default assertion order modulation [2018-06-22 02:09:03,536 INFO ]: Interprodecural is true [2018-06-22 02:09:03,536 INFO ]: Hoare is false [2018-06-22 02:09:03,536 INFO ]: Compute interpolants for FPandBP [2018-06-22 02:09:03,536 INFO ]: Backedges is TWOTRACK [2018-06-22 02:09:03,537 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 02:09:03,537 INFO ]: Difference is false [2018-06-22 02:09:03,537 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 02:09:03,537 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 02:09:03,556 INFO ]: Start isEmpty. Operand 28 states. [2018-06-22 02:09:03,571 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 02:09:03,571 INFO ]: Found error trace [2018-06-22 02:09:03,573 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:09:03,573 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:09:03,578 INFO ]: Analyzing trace with hash -440785053, now seen corresponding path program 1 times [2018-06-22 02:09:03,579 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:09:03,579 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:09:03,614 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:09:03,614 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:09:03,614 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:09:03,642 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:09:03,671 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:09:03,673 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 02:09:03,673 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 02:09:03,675 INFO ]: Interpolant automaton has 2 states [2018-06-22 02:09:03,686 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 02:09:03,686 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 02:09:03,689 INFO ]: Start difference. First operand 28 states. Second operand 2 states. [2018-06-22 02:09:03,721 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:09:03,721 INFO ]: Finished difference Result 26 states and 41 transitions. [2018-06-22 02:09:03,722 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 02:09:03,723 INFO ]: Start accepts. Automaton has 2 states. Word has length 7 [2018-06-22 02:09:03,723 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:09:03,737 INFO ]: With dead ends: 26 [2018-06-22 02:09:03,737 INFO ]: Without dead ends: 26 [2018-06-22 02:09:03,739 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 02:09:03,760 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-22 02:09:03,785 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-06-22 02:09:03,786 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-22 02:09:03,788 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 41 transitions. [2018-06-22 02:09:03,790 INFO ]: Start accepts. Automaton has 26 states and 41 transitions. Word has length 7 [2018-06-22 02:09:03,790 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:09:03,790 INFO ]: Abstraction has 26 states and 41 transitions. [2018-06-22 02:09:03,790 INFO ]: Interpolant automaton has 2 states. [2018-06-22 02:09:03,790 INFO ]: Start isEmpty. Operand 26 states and 41 transitions. [2018-06-22 02:09:03,791 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 02:09:03,791 INFO ]: Found error trace [2018-06-22 02:09:03,791 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:09:03,791 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:09:03,792 INFO ]: Analyzing trace with hash -777721728, now seen corresponding path program 1 times [2018-06-22 02:09:03,792 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:09:03,792 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:09:03,792 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:09:03,792 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:09:03,792 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:09:03,802 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:09:03,866 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:09:03,867 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 02:09:03,867 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 02:09:03,868 INFO ]: Interpolant automaton has 4 states [2018-06-22 02:09:03,869 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 02:09:03,869 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 02:09:03,869 INFO ]: Start difference. First operand 26 states and 41 transitions. Second operand 4 states. [2018-06-22 02:09:04,379 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:09:04,379 INFO ]: Finished difference Result 49 states and 79 transitions. [2018-06-22 02:09:04,380 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 02:09:04,380 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 02:09:04,380 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:09:04,383 INFO ]: With dead ends: 49 [2018-06-22 02:09:04,383 INFO ]: Without dead ends: 49 [2018-06-22 02:09:04,384 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 02:09:04,384 INFO ]: Start minimizeSevpa. Operand 49 states. [2018-06-22 02:09:04,394 INFO ]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-06-22 02:09:04,395 INFO ]: Start removeUnreachable. Operand 49 states. [2018-06-22 02:09:04,400 INFO ]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2018-06-22 02:09:04,400 INFO ]: Start accepts. Automaton has 49 states and 79 transitions. Word has length 8 [2018-06-22 02:09:04,400 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:09:04,400 INFO ]: Abstraction has 49 states and 79 transitions. [2018-06-22 02:09:04,400 INFO ]: Interpolant automaton has 4 states. [2018-06-22 02:09:04,400 INFO ]: Start isEmpty. Operand 49 states and 79 transitions. [2018-06-22 02:09:04,404 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 02:09:04,404 INFO ]: Found error trace [2018-06-22 02:09:04,405 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:09:04,405 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:09:04,405 INFO ]: Analyzing trace with hash 1243788222, now seen corresponding path program 1 times [2018-06-22 02:09:04,405 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:09:04,405 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:09:04,407 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:09:04,407 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:09:04,407 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:09:04,413 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:09:04,515 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:09:04,515 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 02:09:04,515 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 02:09:04,515 INFO ]: Interpolant automaton has 4 states [2018-06-22 02:09:04,516 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 02:09:04,516 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 02:09:04,516 INFO ]: Start difference. First operand 49 states and 79 transitions. Second operand 4 states. [2018-06-22 02:09:04,865 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:09:04,866 INFO ]: Finished difference Result 72 states and 117 transitions. [2018-06-22 02:09:04,867 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 02:09:04,867 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 02:09:04,867 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:09:04,870 INFO ]: With dead ends: 72 [2018-06-22 02:09:04,870 INFO ]: Without dead ends: 72 [2018-06-22 02:09:04,870 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 02:09:04,871 INFO ]: Start minimizeSevpa. Operand 72 states. [2018-06-22 02:09:04,889 INFO ]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-06-22 02:09:04,889 INFO ]: Start removeUnreachable. Operand 72 states. [2018-06-22 02:09:04,894 INFO ]: Finished removeUnreachable. Reduced from 72 states to 72 states and 117 transitions. [2018-06-22 02:09:04,894 INFO ]: Start accepts. Automaton has 72 states and 117 transitions. Word has length 9 [2018-06-22 02:09:04,894 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:09:04,894 INFO ]: Abstraction has 72 states and 117 transitions. [2018-06-22 02:09:04,894 INFO ]: Interpolant automaton has 4 states. [2018-06-22 02:09:04,894 INFO ]: Start isEmpty. Operand 72 states and 117 transitions. [2018-06-22 02:09:04,895 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 02:09:04,895 INFO ]: Found error trace [2018-06-22 02:09:04,895 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:09:04,895 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:09:04,895 INFO ]: Analyzing trace with hash 1249329348, now seen corresponding path program 1 times [2018-06-22 02:09:04,895 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:09:04,895 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:09:04,899 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:09:04,899 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:09:04,899 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:09:04,904 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:09:04,935 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:09:04,935 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 02:09:04,935 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 02:09:04,935 INFO ]: Interpolant automaton has 4 states [2018-06-22 02:09:04,935 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 02:09:04,935 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 02:09:04,936 INFO ]: Start difference. First operand 72 states and 117 transitions. Second operand 4 states. [2018-06-22 02:09:05,254 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:09:05,254 INFO ]: Finished difference Result 95 states and 155 transitions. [2018-06-22 02:09:05,255 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 02:09:05,255 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 02:09:05,255 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:09:05,258 INFO ]: With dead ends: 95 [2018-06-22 02:09:05,258 INFO ]: Without dead ends: 95 [2018-06-22 02:09:05,258 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 02:09:05,258 INFO ]: Start minimizeSevpa. Operand 95 states. [2018-06-22 02:09:05,281 INFO ]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-06-22 02:09:05,281 INFO ]: Start removeUnreachable. Operand 95 states. [2018-06-22 02:09:05,286 INFO ]: Finished removeUnreachable. Reduced from 95 states to 95 states and 155 transitions. [2018-06-22 02:09:05,287 INFO ]: Start accepts. Automaton has 95 states and 155 transitions. Word has length 9 [2018-06-22 02:09:05,287 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:09:05,287 INFO ]: Abstraction has 95 states and 155 transitions. [2018-06-22 02:09:05,287 INFO ]: Interpolant automaton has 4 states. [2018-06-22 02:09:05,287 INFO ]: Start isEmpty. Operand 95 states and 155 transitions. [2018-06-22 02:09:05,287 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 02:09:05,287 INFO ]: Found error trace [2018-06-22 02:09:05,287 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:09:05,288 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:09:05,289 INFO ]: Analyzing trace with hash -1165847200, now seen corresponding path program 1 times [2018-06-22 02:09:05,289 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:09:05,289 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:09:05,290 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:09:05,290 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:09:05,290 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:09:05,327 INFO ]: Conjunction of SSA is sat [2018-06-22 02:09:05,333 INFO ]: Counterexample might be feasible [2018-06-22 02:09:05,357 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:09:05 BoogieIcfgContainer [2018-06-22 02:09:05,357 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 02:09:05,741 INFO ]: Toolchain (without parser) took 2479.80 ms. Allocated memory was 305.7 MB in the beginning and 325.1 MB in the end (delta: 19.4 MB). Free memory was 258.0 MB in the beginning and 281.3 MB in the end (delta: -23.2 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 02:09:05,743 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 305.7 MB. Free memory is still 268.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 02:09:05,743 INFO ]: ChcToBoogie took 71.73 ms. Allocated memory is still 305.7 MB. Free memory was 258.0 MB in the beginning and 256.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 02:09:05,744 INFO ]: Boogie Preprocessor took 48.99 ms. Allocated memory is still 305.7 MB. Free memory was 256.1 MB in the beginning and 254.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 02:09:05,749 INFO ]: RCFGBuilder took 436.99 ms. Allocated memory is still 305.7 MB. Free memory was 254.1 MB in the beginning and 242.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 02:09:05,750 INFO ]: TraceAbstraction took 1911.47 ms. Allocated memory was 305.7 MB in the beginning and 325.1 MB in the end (delta: 19.4 MB). Free memory was 242.1 MB in the beginning and 281.3 MB in the end (delta: -39.2 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 02:09:05,764 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 305.7 MB. Free memory is still 268.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 71.73 ms. Allocated memory is still 305.7 MB. Free memory was 258.0 MB in the beginning and 256.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 48.99 ms. Allocated memory is still 305.7 MB. Free memory was 256.1 MB in the beginning and 254.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 436.99 ms. Allocated memory is still 305.7 MB. Free memory was 254.1 MB in the beginning and 242.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1911.47 ms. Allocated memory was 305.7 MB in the beginning and 325.1 MB in the end (delta: 19.4 MB). Free memory was 242.1 MB in the beginning and 281.3 MB in the end (delta: -39.2 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [UNKNOWN] : assertion can be violated assertion can be violated We found a FailurePath: [L0] CALL call gotoProc(0, 0, 0, 0, 0); [L0] gotoSwitch := gotoSwitch_in; [L0] COND FALSE !(gotoSwitch == 6) [L0] COND FALSE !(gotoSwitch == 4) [L0] COND FALSE !(gotoSwitch == 2) [L0] assume ((!(hbv_False_2_Int <= 1) && !(hbv_False_1_Int + hbv_False_3_Int == hbv_False_2_Int + (hbv_False_2_Int - 1) + hbv_False_4_Int)) && !(hbv_False_1_Int <= 1)) && hbv_False_1_Int == hbv_False_2_Int; [L0] hhv_INV_REC_f^f_0_Int, hhv_INV_REC_f^f_1_Int, hhv_INV_REC_f^f_2_Int, hhv_INV_REC_f^f_3_Int := hbv_False_1_Int - 1, hbv_False_2_Int - 3, hbv_False_3_Int, hbv_False_4_Int; [L0] havoc hbv_False_4_Int, hbv_False_2_Int, hbv_False_1_Int, hbv_False_3_Int; [L0] assume ((hhv_INV_REC_f^f_0_Int <= 1 && hhv_INV_REC_f^f_3_Int == hhv_INV_REC_f^f_1_Int) && hhv_INV_REC_f^f_2_Int == hhv_INV_REC_f^f_0_Int) && hhv_INV_REC_f^f_1_Int <= 1; [L0] hhv_INV_REC_f^f_PRE_0_Int, hhv_INV_REC_f^f_PRE_1_Int := hhv_INV_REC_f^f_0_Int, hhv_INV_REC_f^f_1_Int; [L0] assume (((!(hbv_INV_REC_f^f_PRE_2_Int <= 1) && hhv_INV_REC_f^f_PRE_0_Int == hbv_INV_REC_f^f_PRE_1_Int - 1) && !(hbv_INV_REC_f^f_PRE_1_Int <= 1)) && hbv_INV_REC_f^f_PRE_1_Int == hbv_INV_REC_f^f_PRE_2_Int) && hhv_INV_REC_f^f_PRE_1_Int == hbv_INV_REC_f^f_PRE_2_Int - 3; [L0] RET call gotoProc(0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. UNSAFE Result, 1.8s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 187 SDtfs, 167 SDslu, 69 SDs, 0 SdLazy, 158 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 475 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/faulty__limit1!.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_02-09-05-796.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/faulty__limit1!.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_02-09-05-796.csv Received shutdown request...