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_No_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/mc91.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:35:29,334 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:35:29,336 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:35:29,349 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:35:29,350 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:35:29,351 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:35:29,352 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:35:29,354 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:35:29,355 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:35:29,357 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:35:29,358 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:35:29,358 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:35:29,359 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:35:29,363 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:35:29,363 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:35:29,364 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:35:29,376 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:35:29,420 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:35:29,421 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:35:29,422 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:35:29,424 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:35:29,426 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:35:29,426 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:35:29,426 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:35:29,427 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:35:29,435 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:35:29,435 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:35:29,436 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:35:29,437 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:35:29,437 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:35:29,438 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:35:29,439 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:35:29,439 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:35:29,440 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:35:29,440 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:35:29,440 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 11:35:29,456 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:35:29,457 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:35:29,459 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:35:29,459 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:35:29,460 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:35:29,460 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:35:29,461 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:35:29,461 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:35:29,461 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:35:29,461 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:35:29,462 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:35:29,462 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:35:29,462 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:35:29,462 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:35:29,462 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:35:29,463 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:35:29,466 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:35:29,466 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:35:29,466 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:35:29,467 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:35:29,468 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:35:29,523 INFO ]: Repository-Root is: /tmp [2018-06-22 11:35:29,546 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:35:29,553 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:35:29,554 INFO ]: Initializing SmtParser... [2018-06-22 11:35:29,554 INFO ]: SmtParser initialized [2018-06-22 11:35:29,555 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/mc91.smt2 [2018-06-22 11:35:29,557 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 11:35:29,648 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/mc91.smt2 unknown [2018-06-22 11:35:29,777 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/mc91.smt2 [2018-06-22 11:35:29,782 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:35:29,791 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:35:29,791 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:35:29,791 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:35:29,791 INFO ]: ChcToBoogie initialized [2018-06-22 11:35:29,795 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:35:29" (1/1) ... [2018-06-22 11:35:29,839 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:29 Unit [2018-06-22 11:35:29,841 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:35:29,842 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:35:29,842 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:35:29,842 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:35:29,863 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:29" (1/1) ... [2018-06-22 11:35:29,863 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:29" (1/1) ... [2018-06-22 11:35:29,870 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:29" (1/1) ... [2018-06-22 11:35:29,870 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:29" (1/1) ... [2018-06-22 11:35:29,873 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:29" (1/1) ... [2018-06-22 11:35:29,874 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:29" (1/1) ... [2018-06-22 11:35:29,875 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:29" (1/1) ... [2018-06-22 11:35:29,876 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:35:29,877 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:35:29,877 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:35:29,877 INFO ]: RCFGBuilder initialized [2018-06-22 11:35:29,877 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:29" (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) [2018-06-22 11:35:29,893 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:35:29,893 INFO ]: Found specification of procedure False [2018-06-22 11:35:29,893 INFO ]: Found implementation of procedure False [2018-06-22 11:35:29,893 INFO ]: Specification and implementation of procedure mc91DLRunknownCLN2 given in one single declaration [2018-06-22 11:35:29,893 INFO ]: Found specification of procedure mc91DLRunknownCLN2 [2018-06-22 11:35:29,893 INFO ]: Found implementation of procedure mc91DLRunknownCLN2 [2018-06-22 11:35:29,893 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:35:29,893 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:35:29,893 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 11:35:30,109 INFO ]: Using library mode [2018-06-22 11:35:30,119 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:35:30 BoogieIcfgContainer [2018-06-22 11:35:30,119 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:35:30,120 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:35:30,121 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:35:30,124 INFO ]: TraceAbstraction initialized [2018-06-22 11:35:30,124 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:35:29" (1/3) ... [2018-06-22 11:35:30,125 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e86e8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:35:30, skipping insertion in model container [2018-06-22 11:35:30,125 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:29" (2/3) ... [2018-06-22 11:35:30,125 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e86e8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:35:30, skipping insertion in model container [2018-06-22 11:35:30,125 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:35:30" (3/3) ... [2018-06-22 11:35:30,127 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:35:30,136 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:35:30,154 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:35:30,202 INFO ]: Using default assertion order modulation [2018-06-22 11:35:30,203 INFO ]: Interprodecural is true [2018-06-22 11:35:30,203 INFO ]: Hoare is false [2018-06-22 11:35:30,203 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:35:30,203 INFO ]: Backedges is TWOTRACK [2018-06-22 11:35:30,203 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:35:30,203 INFO ]: Difference is false [2018-06-22 11:35:30,203 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:35:30,203 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:35:30,218 INFO ]: Start isEmpty. Operand 14 states. [2018-06-22 11:35:30,228 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:35:30,228 INFO ]: Found error trace [2018-06-22 11:35:30,229 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:35:30,229 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:30,234 INFO ]: Analyzing trace with hash 55609196, now seen corresponding path program 1 times [2018-06-22 11:35:30,236 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:30,236 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:30,281 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:30,281 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:30,281 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:30,293 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:30,318 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:35:30,320 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:35:30,320 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:35:30,322 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:35:30,339 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:35:30,340 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:35:30,344 INFO ]: Start difference. First operand 14 states. Second operand 2 states. [2018-06-22 11:35:30,365 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:30,365 INFO ]: Finished difference Result 12 states and 14 transitions. [2018-06-22 11:35:30,365 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:35:30,366 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:35:30,367 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:30,377 INFO ]: With dead ends: 12 [2018-06-22 11:35:30,377 INFO ]: Without dead ends: 12 [2018-06-22 11:35:30,379 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 11:35:30,396 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 11:35:30,421 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 11:35:30,422 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 11:35:30,422 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-06-22 11:35:30,423 INFO ]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2018-06-22 11:35:30,423 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:30,424 INFO ]: Abstraction has 12 states and 14 transitions. [2018-06-22 11:35:30,424 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:35:30,424 INFO ]: Start isEmpty. Operand 12 states and 14 transitions. [2018-06-22 11:35:30,424 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:35:30,424 INFO ]: Found error trace [2018-06-22 11:35:30,425 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:30,425 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:30,425 INFO ]: Analyzing trace with hash -853408345, now seen corresponding path program 1 times [2018-06-22 11:35:30,425 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:30,425 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:30,425 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:30,425 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:30,425 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:30,444 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:30,601 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:35:30,602 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:35:30,602 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:35:30,603 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:35:30,603 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:35:30,603 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:35:30,604 INFO ]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2018-06-22 11:35:30,655 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:30,655 INFO ]: Finished difference Result 14 states and 17 transitions. [2018-06-22 11:35:30,655 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:35:30,656 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:35:30,656 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:30,658 INFO ]: With dead ends: 14 [2018-06-22 11:35:30,658 INFO ]: Without dead ends: 14 [2018-06-22 11:35:30,658 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:35:30,659 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 11:35:30,664 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 11:35:30,665 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 11:35:30,666 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2018-06-22 11:35:30,666 INFO ]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2018-06-22 11:35:30,666 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:30,667 INFO ]: Abstraction has 14 states and 17 transitions. [2018-06-22 11:35:30,667 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:35:30,667 INFO ]: Start isEmpty. Operand 14 states and 17 transitions. [2018-06-22 11:35:30,667 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:35:30,667 INFO ]: Found error trace [2018-06-22 11:35:30,667 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:30,667 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:30,668 INFO ]: Analyzing trace with hash 1830989231, now seen corresponding path program 1 times [2018-06-22 11:35:30,668 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:30,668 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:30,668 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:30,668 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:30,668 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:30,702 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:30,945 WARN ]: Spent 167.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 6 [2018-06-22 11:35:31,366 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:35:31,366 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:35:31,366 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 [2018-06-22 11:35:31,375 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:31,395 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:31,404 INFO ]: Computing forward predicates... [2018-06-22 11:35:31,843 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:35:31,873 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:35:31,873 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 11:35:31,873 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:35:31,874 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:35:31,874 INFO ]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:35:31,874 INFO ]: Start difference. First operand 14 states and 17 transitions. Second operand 12 states. [2018-06-22 11:35:32,275 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:32,275 INFO ]: Finished difference Result 15 states and 21 transitions. [2018-06-22 11:35:32,275 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:35:32,275 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 11:35:32,276 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:32,276 INFO ]: With dead ends: 15 [2018-06-22 11:35:32,276 INFO ]: Without dead ends: 0 [2018-06-22 11:35:32,276 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:35:32,276 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:35:32,277 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:35:32,277 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:35:32,277 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:35:32,277 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-22 11:35:32,277 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:32,277 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:35:32,277 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:35:32,277 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:35:32,277 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:35:32,282 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:35:32 BoogieIcfgContainer [2018-06-22 11:35:32,282 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:35:32,283 INFO ]: Toolchain (without parser) took 2500.50 ms. Allocated memory was 308.8 MB in the beginning and 325.1 MB in the end (delta: 16.3 MB). Free memory was 266.2 MB in the beginning and 285.1 MB in the end (delta: -18.9 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:35:32,284 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:35:32,284 INFO ]: ChcToBoogie took 50.77 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 264.2 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. [2018-06-22 11:35:32,285 INFO ]: Boogie Preprocessor took 34.08 ms. Allocated memory is still 308.8 MB. Free memory was 264.2 MB in the beginning and 262.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:32,285 INFO ]: RCFGBuilder took 242.73 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 256.1 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:32,286 INFO ]: TraceAbstraction took 2161.69 ms. Allocated memory was 308.8 MB in the beginning and 325.1 MB in the end (delta: 16.3 MB). Free memory was 255.1 MB in the beginning and 285.1 MB in the end (delta: -29.9 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:35:32,290 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 50.77 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 264.2 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. * Boogie Preprocessor took 34.08 ms. Allocated memory is still 308.8 MB. Free memory was 264.2 MB in the beginning and 262.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 242.73 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 256.1 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2161.69 ms. Allocated memory was 308.8 MB in the beginning and 325.1 MB in the end (delta: 16.3 MB). Free memory was 255.1 MB in the beginning and 285.1 MB in the end (delta: -29.9 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 36 SDtfs, 10 SDslu, 39 SDs, 0 SdLazy, 69 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 2744 SizeOfPredicates, 8 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 6/18 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-35-32-301.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-35-32-301.csv Received shutdown request...