java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/HOLA/03.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 08:40:02,508 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 08:40:02,511 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 08:40:02,525 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 08:40:02,525 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 08:40:02,526 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 08:40:02,527 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 08:40:02,529 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 08:40:02,531 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 08:40:02,531 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 08:40:02,532 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 08:40:02,533 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 08:40:02,533 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 08:40:02,537 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 08:40:02,537 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 08:40:02,538 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 08:40:02,541 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 08:40:02,543 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 08:40:02,544 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 08:40:02,545 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 08:40:02,547 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 08:40:02,549 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 08:40:02,549 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 08:40:02,549 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 08:40:02,550 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 08:40:02,551 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 08:40:02,552 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 08:40:02,553 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 08:40:02,554 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 08:40:02,554 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 08:40:02,555 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 08:40:02,555 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 08:40:02,556 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 08:40:02,557 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 08:40:02,557 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 08:40:02,558 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 08:40:02,572 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 08:40:02,572 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 08:40:02,573 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 08:40:02,573 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 08:40:02,574 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 08:40:02,574 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 08:40:02,575 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 08:40:02,575 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 08:40:02,575 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 08:40:02,575 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 08:40:02,576 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 08:40:02,576 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 08:40:02,576 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:40:02,576 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 08:40:02,577 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 08:40:02,577 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 08:40:02,577 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 08:40:02,577 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 08:40:02,577 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 08:40:02,578 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 08:40:02,578 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 08:40:02,579 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 08:40:02,580 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 08:40:02,629 INFO ]: Repository-Root is: /tmp [2018-06-25 08:40:02,650 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 08:40:02,657 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 08:40:02,659 INFO ]: Initializing SmtParser... [2018-06-25 08:40:02,659 INFO ]: SmtParser initialized [2018-06-25 08:40:02,660 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/03.c.smt2 [2018-06-25 08:40:02,661 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-25 08:40:02,759 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/03.c.smt2 unknown [2018-06-25 08:40:03,187 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/03.c.smt2 [2018-06-25 08:40:03,192 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 08:40:03,198 INFO ]: Walking toolchain with 4 elements. [2018-06-25 08:40:03,198 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 08:40:03,198 INFO ]: Initializing ChcToBoogie... [2018-06-25 08:40:03,198 INFO ]: ChcToBoogie initialized [2018-06-25 08:40:03,202 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:40:03" (1/1) ... [2018-06-25 08:40:03,312 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:40:03 Unit [2018-06-25 08:40:03,312 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 08:40:03,312 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 08:40:03,312 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 08:40:03,312 INFO ]: Boogie Preprocessor initialized [2018-06-25 08:40:03,357 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:40:03" (1/1) ... [2018-06-25 08:40:03,357 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:40:03" (1/1) ... [2018-06-25 08:40:03,372 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:40:03" (1/1) ... [2018-06-25 08:40:03,372 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:40:03" (1/1) ... [2018-06-25 08:40:03,386 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:40:03" (1/1) ... [2018-06-25 08:40:03,393 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:40:03" (1/1) ... [2018-06-25 08:40:03,395 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:40:03" (1/1) ... [2018-06-25 08:40:03,398 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 08:40:03,399 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 08:40:03,399 INFO ]: Initializing RCFGBuilder... [2018-06-25 08:40:03,399 INFO ]: RCFGBuilder initialized [2018-06-25 08:40:03,400 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:40:03" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-25 08:40:03,422 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 08:40:03,422 INFO ]: Found specification of procedure gotoProc [2018-06-25 08:40:03,422 INFO ]: Found implementation of procedure gotoProc [2018-06-25 08:40:03,422 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 08:40:03,423 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 08:40:03,423 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:40:04,211 INFO ]: Using library mode [2018-06-25 08:40:04,212 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:40:04 BoogieIcfgContainer [2018-06-25 08:40:04,212 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 08:40:04,213 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 08:40:04,213 INFO ]: Initializing TraceAbstraction... [2018-06-25 08:40:04,216 INFO ]: TraceAbstraction initialized [2018-06-25 08:40:04,217 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:40:03" (1/3) ... [2018-06-25 08:40:04,217 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7b4dba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 08:40:04, skipping insertion in model container [2018-06-25 08:40:04,218 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:40:03" (2/3) ... [2018-06-25 08:40:04,218 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7b4dba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 08:40:04, skipping insertion in model container [2018-06-25 08:40:04,218 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:40:04" (3/3) ... [2018-06-25 08:40:04,220 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 08:40:04,229 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 08:40:04,238 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 08:40:04,285 INFO ]: Using default assertion order modulation [2018-06-25 08:40:04,285 INFO ]: Interprodecural is true [2018-06-25 08:40:04,285 INFO ]: Hoare is false [2018-06-25 08:40:04,285 INFO ]: Compute interpolants for FPandBP [2018-06-25 08:40:04,285 INFO ]: Backedges is TWOTRACK [2018-06-25 08:40:04,285 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 08:40:04,285 INFO ]: Difference is false [2018-06-25 08:40:04,285 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 08:40:04,285 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 08:40:04,302 INFO ]: Start isEmpty. Operand 42 states. [2018-06-25 08:40:04,316 INFO ]: Finished isEmpty. Found accepting run of length 32 [2018-06-25 08:40:04,316 INFO ]: Found error trace [2018-06-25 08:40:04,317 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:40:04,317 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:40:04,320 INFO ]: Analyzing trace with hash -1768443586, now seen corresponding path program 1 times [2018-06-25 08:40:04,322 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:40:04,322 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:40:04,355 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:40:04,355 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:40:04,355 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:40:04,446 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:40:05,555 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:40:05,557 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:40:05,557 INFO ]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2018-06-25 08:40:05,559 INFO ]: Interpolant automaton has 24 states [2018-06-25 08:40:05,571 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-25 08:40:05,572 INFO ]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-06-25 08:40:05,574 INFO ]: Start difference. First operand 42 states. Second operand 24 states. [2018-06-25 08:40:08,851 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:40:08,851 INFO ]: Finished difference Result 193 states and 208 transitions. [2018-06-25 08:40:08,905 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-06-25 08:40:08,906 INFO ]: Start accepts. Automaton has 24 states. Word has length 31 [2018-06-25 08:40:08,906 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:40:08,925 INFO ]: With dead ends: 193 [2018-06-25 08:40:08,925 INFO ]: Without dead ends: 189 [2018-06-25 08:40:08,931 INFO ]: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2199 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1834, Invalid=6176, Unknown=0, NotChecked=0, Total=8010 [2018-06-25 08:40:08,950 INFO ]: Start minimizeSevpa. Operand 189 states. [2018-06-25 08:40:08,974 INFO ]: Finished minimizeSevpa. Reduced states from 189 to 58. [2018-06-25 08:40:08,975 INFO ]: Start removeUnreachable. Operand 58 states. [2018-06-25 08:40:08,976 INFO ]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2018-06-25 08:40:08,978 INFO ]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 31 [2018-06-25 08:40:08,978 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:40:08,978 INFO ]: Abstraction has 58 states and 62 transitions. [2018-06-25 08:40:08,978 INFO ]: Interpolant automaton has 24 states. [2018-06-25 08:40:08,978 INFO ]: Start isEmpty. Operand 58 states and 62 transitions. [2018-06-25 08:40:08,979 INFO ]: Finished isEmpty. Found accepting run of length 36 [2018-06-25 08:40:08,979 INFO ]: Found error trace [2018-06-25 08:40:08,980 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:40:08,980 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:40:08,980 INFO ]: Analyzing trace with hash -1581228202, now seen corresponding path program 1 times [2018-06-25 08:40:08,980 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:40:08,980 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:40:08,981 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:40:08,981 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:40:08,981 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:40:09,025 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:40:09,707 INFO ]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:40:09,708 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:40:09,708 INFO ]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2018-06-25 08:40:09,709 INFO ]: Interpolant automaton has 26 states [2018-06-25 08:40:09,709 INFO ]: Constructing interpolant automaton starting with 26 interpolants. [2018-06-25 08:40:09,709 INFO ]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-06-25 08:40:09,710 INFO ]: Start difference. First operand 58 states and 62 transitions. Second operand 26 states. [2018-06-25 08:40:13,192 WARN ]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-25 08:40:14,160 WARN ]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-06-25 08:40:14,511 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:40:14,511 INFO ]: Finished difference Result 266 states and 288 transitions. [2018-06-25 08:40:14,511 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-06-25 08:40:14,511 INFO ]: Start accepts. Automaton has 26 states. Word has length 35 [2018-06-25 08:40:14,511 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:40:14,514 INFO ]: With dead ends: 266 [2018-06-25 08:40:14,514 INFO ]: Without dead ends: 262 [2018-06-25 08:40:14,519 INFO ]: 0 DeclaredPredicates, 124 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4638 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3202, Invalid=11560, Unknown=0, NotChecked=0, Total=14762 [2018-06-25 08:40:14,519 INFO ]: Start minimizeSevpa. Operand 262 states. [2018-06-25 08:40:14,528 INFO ]: Finished minimizeSevpa. Reduced states from 262 to 60. [2018-06-25 08:40:14,528 INFO ]: Start removeUnreachable. Operand 60 states. [2018-06-25 08:40:14,529 INFO ]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2018-06-25 08:40:14,529 INFO ]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 35 [2018-06-25 08:40:14,530 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:40:14,530 INFO ]: Abstraction has 60 states and 64 transitions. [2018-06-25 08:40:14,530 INFO ]: Interpolant automaton has 26 states. [2018-06-25 08:40:14,530 INFO ]: Start isEmpty. Operand 60 states and 64 transitions. [2018-06-25 08:40:14,531 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-25 08:40:14,531 INFO ]: Found error trace [2018-06-25 08:40:14,531 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:40:14,531 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:40:14,531 INFO ]: Analyzing trace with hash 2000732086, now seen corresponding path program 1 times [2018-06-25 08:40:14,531 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:40:14,531 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:40:14,532 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:40:14,532 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:40:14,532 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:40:14,582 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:40:14,699 INFO ]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:40:14,700 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:40:14,700 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-25 08:40:14,700 INFO ]: Interpolant automaton has 8 states [2018-06-25 08:40:14,700 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 08:40:14,700 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-25 08:40:14,700 INFO ]: Start difference. First operand 60 states and 64 transitions. Second operand 8 states. [2018-06-25 08:40:14,806 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:40:14,806 INFO ]: Finished difference Result 100 states and 106 transitions. [2018-06-25 08:40:14,807 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-25 08:40:14,807 INFO ]: Start accepts. Automaton has 8 states. Word has length 37 [2018-06-25 08:40:14,807 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:40:14,808 INFO ]: With dead ends: 100 [2018-06-25 08:40:14,808 INFO ]: Without dead ends: 98 [2018-06-25 08:40:14,808 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2018-06-25 08:40:14,808 INFO ]: Start minimizeSevpa. Operand 98 states. [2018-06-25 08:40:14,816 INFO ]: Finished minimizeSevpa. Reduced states from 98 to 60. [2018-06-25 08:40:14,816 INFO ]: Start removeUnreachable. Operand 60 states. [2018-06-25 08:40:14,817 INFO ]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2018-06-25 08:40:14,817 INFO ]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 37 [2018-06-25 08:40:14,817 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:40:14,817 INFO ]: Abstraction has 60 states and 63 transitions. [2018-06-25 08:40:14,817 INFO ]: Interpolant automaton has 8 states. [2018-06-25 08:40:14,817 INFO ]: Start isEmpty. Operand 60 states and 63 transitions. [2018-06-25 08:40:14,818 INFO ]: Finished isEmpty. Found accepting run of length 52 [2018-06-25 08:40:14,818 INFO ]: Found error trace [2018-06-25 08:40:14,818 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:40:14,819 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:40:14,819 INFO ]: Analyzing trace with hash -962336350, now seen corresponding path program 1 times [2018-06-25 08:40:14,819 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:40:14,819 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:40:14,819 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:40:14,819 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:40:14,820 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:40:14,871 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:40:15,332 INFO ]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-25 08:40:15,332 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:40:15,332 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-25 08:40:15,348 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 08:40:15,466 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:40:15,480 INFO ]: Computing forward predicates... [2018-06-25 08:40:17,730 INFO ]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-25 08:40:17,780 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-25 08:40:17,781 INFO ]: Number of different interpolants: perfect sequences [15] imperfect sequences [33] total 46 [2018-06-25 08:40:17,781 INFO ]: Interpolant automaton has 46 states [2018-06-25 08:40:17,781 INFO ]: Constructing interpolant automaton starting with 46 interpolants. [2018-06-25 08:40:17,782 INFO ]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-06-25 08:40:17,782 INFO ]: Start difference. First operand 60 states and 63 transitions. Second operand 46 states. [2018-06-25 08:40:18,947 WARN ]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-06-25 08:40:20,839 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:40:20,839 INFO ]: Finished difference Result 194 states and 207 transitions. [2018-06-25 08:40:20,839 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-06-25 08:40:20,839 INFO ]: Start accepts. Automaton has 46 states. Word has length 51 [2018-06-25 08:40:20,840 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:40:20,841 INFO ]: With dead ends: 194 [2018-06-25 08:40:20,841 INFO ]: Without dead ends: 188 [2018-06-25 08:40:20,843 INFO ]: 0 DeclaredPredicates, 150 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1423, Invalid=7889, Unknown=0, NotChecked=0, Total=9312 [2018-06-25 08:40:20,844 INFO ]: Start minimizeSevpa. Operand 188 states. [2018-06-25 08:40:20,850 INFO ]: Finished minimizeSevpa. Reduced states from 188 to 72. [2018-06-25 08:40:20,850 INFO ]: Start removeUnreachable. Operand 72 states. [2018-06-25 08:40:20,851 INFO ]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2018-06-25 08:40:20,851 INFO ]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 51 [2018-06-25 08:40:20,851 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:40:20,851 INFO ]: Abstraction has 72 states and 76 transitions. [2018-06-25 08:40:20,851 INFO ]: Interpolant automaton has 46 states. [2018-06-25 08:40:20,851 INFO ]: Start isEmpty. Operand 72 states and 76 transitions. [2018-06-25 08:40:20,853 INFO ]: Finished isEmpty. Found accepting run of length 56 [2018-06-25 08:40:20,853 INFO ]: Found error trace [2018-06-25 08:40:20,853 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:40:20,853 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:40:20,853 INFO ]: Analyzing trace with hash -754934854, now seen corresponding path program 1 times [2018-06-25 08:40:20,853 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:40:20,853 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:40:20,854 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:40:20,854 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:40:20,854 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:40:20,891 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:40:21,485 INFO ]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-25 08:40:21,485 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:40:21,485 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 [2018-06-25 08:40:21,492 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:40:21,581 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:40:21,590 INFO ]: Computing forward predicates... [2018-06-25 08:40:23,077 INFO ]: Checked inductivity of 20 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:40:23,097 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:40:23,097 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 29] total 62 [2018-06-25 08:40:23,097 INFO ]: Interpolant automaton has 62 states [2018-06-25 08:40:23,097 INFO ]: Constructing interpolant automaton starting with 62 interpolants. [2018-06-25 08:40:23,098 INFO ]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-06-25 08:40:23,098 INFO ]: Start difference. First operand 72 states and 76 transitions. Second operand 62 states. [2018-06-25 08:40:25,442 WARN ]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-06-25 08:40:25,861 WARN ]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-06-25 08:40:26,008 WARN ]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-06-25 08:40:26,188 WARN ]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-06-25 08:40:26,330 WARN ]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-06-25 08:40:26,476 WARN ]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-06-25 08:40:26,628 WARN ]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-06-25 08:40:31,030 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:40:31,030 INFO ]: Finished difference Result 125 states and 131 transitions. [2018-06-25 08:40:31,030 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-06-25 08:40:31,030 INFO ]: Start accepts. Automaton has 62 states. Word has length 55 [2018-06-25 08:40:31,030 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:40:31,031 INFO ]: With dead ends: 125 [2018-06-25 08:40:31,031 INFO ]: Without dead ends: 119 [2018-06-25 08:40:31,034 INFO ]: 0 DeclaredPredicates, 163 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1395 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=2482, Invalid=11798, Unknown=0, NotChecked=0, Total=14280 [2018-06-25 08:40:31,034 INFO ]: Start minimizeSevpa. Operand 119 states. [2018-06-25 08:40:31,038 INFO ]: Finished minimizeSevpa. Reduced states from 119 to 66. [2018-06-25 08:40:31,038 INFO ]: Start removeUnreachable. Operand 66 states. [2018-06-25 08:40:31,039 INFO ]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2018-06-25 08:40:31,039 INFO ]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 55 [2018-06-25 08:40:31,039 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:40:31,039 INFO ]: Abstraction has 66 states and 69 transitions. [2018-06-25 08:40:31,039 INFO ]: Interpolant automaton has 62 states. [2018-06-25 08:40:31,040 INFO ]: Start isEmpty. Operand 66 states and 69 transitions. [2018-06-25 08:40:31,042 INFO ]: Finished isEmpty. Found accepting run of length 66 [2018-06-25 08:40:31,042 INFO ]: Found error trace [2018-06-25 08:40:31,042 INFO ]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:40:31,042 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:40:31,042 INFO ]: Analyzing trace with hash -698322614, now seen corresponding path program 1 times [2018-06-25 08:40:31,042 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:40:31,042 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:40:31,043 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:40:31,043 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:40:31,043 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:40:31,066 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:40:32,111 INFO ]: Checked inductivity of 34 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-25 08:40:32,111 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:40:32,111 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 08:40:32,119 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:40:32,243 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:40:32,251 INFO ]: Computing forward predicates... [2018-06-25 08:40:33,061 INFO ]: Checked inductivity of 34 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:40:33,081 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:40:33,081 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 34] total 59 [2018-06-25 08:40:33,082 INFO ]: Interpolant automaton has 59 states [2018-06-25 08:40:33,082 INFO ]: Constructing interpolant automaton starting with 59 interpolants. [2018-06-25 08:40:33,083 INFO ]: CoverageRelationStatistics Valid=126, Invalid=3296, Unknown=0, NotChecked=0, Total=3422 [2018-06-25 08:40:33,083 INFO ]: Start difference. First operand 66 states and 69 transitions. Second operand 59 states. [2018-06-25 08:40:36,926 WARN ]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-06-25 08:40:39,493 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:40:39,493 INFO ]: Finished difference Result 145 states and 151 transitions. [2018-06-25 08:40:39,493 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-06-25 08:40:39,493 INFO ]: Start accepts. Automaton has 59 states. Word has length 65 [2018-06-25 08:40:39,493 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:40:39,494 INFO ]: With dead ends: 145 [2018-06-25 08:40:39,494 INFO ]: Without dead ends: 126 [2018-06-25 08:40:39,498 INFO ]: 0 DeclaredPredicates, 183 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3237 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=3049, Invalid=16133, Unknown=0, NotChecked=0, Total=19182 [2018-06-25 08:40:39,498 INFO ]: Start minimizeSevpa. Operand 126 states. [2018-06-25 08:40:39,505 INFO ]: Finished minimizeSevpa. Reduced states from 126 to 80. [2018-06-25 08:40:39,505 INFO ]: Start removeUnreachable. Operand 80 states. [2018-06-25 08:40:39,506 INFO ]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2018-06-25 08:40:39,506 INFO ]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 65 [2018-06-25 08:40:39,506 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:40:39,506 INFO ]: Abstraction has 80 states and 83 transitions. [2018-06-25 08:40:39,506 INFO ]: Interpolant automaton has 59 states. [2018-06-25 08:40:39,506 INFO ]: Start isEmpty. Operand 80 states and 83 transitions. [2018-06-25 08:40:39,507 INFO ]: Finished isEmpty. Found accepting run of length 76 [2018-06-25 08:40:39,507 INFO ]: Found error trace [2018-06-25 08:40:39,507 INFO ]: trace histogram [5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:40:39,507 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:40:39,507 INFO ]: Analyzing trace with hash -1825312038, now seen corresponding path program 2 times [2018-06-25 08:40:39,507 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:40:39,507 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:40:39,508 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:40:39,508 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:40:39,508 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:40:39,538 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:40:40,136 INFO ]: Checked inductivity of 58 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-06-25 08:40:40,136 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:40:40,136 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 08:40:40,142 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 08:40:40,259 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 08:40:40,259 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:40:40,278 INFO ]: Computing forward predicates... [2018-06-25 08:40:41,431 INFO ]: Checked inductivity of 58 backedges. 38 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:40:41,452 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:40:41,452 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 42] total 70 [2018-06-25 08:40:41,453 INFO ]: Interpolant automaton has 70 states [2018-06-25 08:40:41,453 INFO ]: Constructing interpolant automaton starting with 70 interpolants. [2018-06-25 08:40:41,453 INFO ]: CoverageRelationStatistics Valid=162, Invalid=4668, Unknown=0, NotChecked=0, Total=4830 [2018-06-25 08:40:41,453 INFO ]: Start difference. First operand 80 states and 83 transitions. Second operand 70 states. [2018-06-25 08:40:45,420 WARN ]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-06-25 08:40:45,629 WARN ]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-06-25 08:40:45,849 WARN ]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-06-25 08:40:46,074 WARN ]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-06-25 08:40:46,308 WARN ]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-06-25 08:40:46,933 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:40:46,933 INFO ]: Finished difference Result 78 states and 79 transitions. [2018-06-25 08:40:46,933 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-06-25 08:40:46,933 INFO ]: Start accepts. Automaton has 70 states. Word has length 75 [2018-06-25 08:40:46,933 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:40:46,933 INFO ]: With dead ends: 78 [2018-06-25 08:40:46,933 INFO ]: Without dead ends: 0 [2018-06-25 08:40:46,935 INFO ]: 0 DeclaredPredicates, 187 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2276 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2617, Invalid=15205, Unknown=0, NotChecked=0, Total=17822 [2018-06-25 08:40:46,935 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 08:40:46,935 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 08:40:46,935 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 08:40:46,935 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 08:40:46,935 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2018-06-25 08:40:46,935 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:40:46,935 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 08:40:46,935 INFO ]: Interpolant automaton has 70 states. [2018-06-25 08:40:46,935 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 08:40:46,935 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 08:40:46,940 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 08:40:46 BoogieIcfgContainer [2018-06-25 08:40:46,940 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 08:40:46,941 INFO ]: Toolchain (without parser) took 43748.67 ms. Allocated memory was 309.3 MB in the beginning and 725.6 MB in the end (delta: 416.3 MB). Free memory was 249.7 MB in the beginning and 225.2 MB in the end (delta: 24.6 MB). Peak memory consumption was 440.9 MB. Max. memory is 3.6 GB. [2018-06-25 08:40:46,941 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:40:46,941 INFO ]: ChcToBoogie took 113.84 ms. Allocated memory is still 309.3 MB. Free memory was 249.7 MB in the beginning and 245.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:40:46,943 INFO ]: Boogie Preprocessor took 86.05 ms. Allocated memory is still 309.3 MB. Free memory is still 245.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:40:46,943 INFO ]: RCFGBuilder took 812.89 ms. Allocated memory is still 309.3 MB. Free memory was 245.8 MB in the beginning and 215.7 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:40:46,944 INFO ]: TraceAbstraction took 42726.93 ms. Allocated memory was 309.3 MB in the beginning and 725.6 MB in the end (delta: 416.3 MB). Free memory was 213.8 MB in the beginning and 225.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 404.9 MB. Max. memory is 3.6 GB. [2018-06-25 08:40:46,946 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 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 113.84 ms. Allocated memory is still 309.3 MB. Free memory was 249.7 MB in the beginning and 245.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 86.05 ms. Allocated memory is still 309.3 MB. Free memory is still 245.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 812.89 ms. Allocated memory is still 309.3 MB. Free memory was 245.8 MB in the beginning and 215.7 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 42726.93 ms. Allocated memory was 309.3 MB in the beginning and 725.6 MB in the end (delta: 416.3 MB). Free memory was 213.8 MB in the beginning and 225.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 404.9 MB. 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 2 procedures, 42 locations, 1 error locations. SAFE Result, 42.6s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 31.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 273 SDtfs, 6995 SDslu, 8633 SDs, 0 SdLazy, 7887 SolverSat, 3122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 911 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 702 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15193 ImplicationChecksByTransitivity, 34.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=6, 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, 7 MinimizatonAttempts, 586 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 595 NumberOfCodeBlocks, 595 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 584 ConstructedInterpolants, 0 QuantifiedInterpolants, 87228 SizeOfPredicates, 220 NumberOfNonLiveVariables, 3802 ConjunctsInSsa, 226 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 192/262 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/03.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_08-40-46-954.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/03.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_08-40-46-954.csv Received shutdown request...