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/eldarica-misc/LIA/reve/022-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:21:08,696 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:21:08,698 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:21:08,709 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:21:08,709 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:21:08,710 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:21:08,713 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:21:08,715 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:21:08,716 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:21:08,717 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:21:08,718 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:21:08,718 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:21:08,719 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:21:08,720 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:21:08,720 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:21:08,721 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:21:08,723 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:21:08,725 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:21:08,726 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:21:08,727 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:21:08,728 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:21:08,730 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:21:08,731 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:21:08,731 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:21:08,732 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:21:08,733 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:21:08,733 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:21:08,734 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:21:08,735 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:21:08,736 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:21:08,736 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:21:08,737 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:21:08,737 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:21:08,738 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:21:08,739 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:21:08,739 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 11:21:08,752 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:21:08,752 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:21:08,752 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:21:08,753 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:21:08,754 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:21:08,754 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:21:08,754 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:21:08,754 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:21:08,755 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:21:08,755 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:21:08,755 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:21:08,755 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:21:08,756 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:21:08,756 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:21:08,756 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:21:08,756 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:21:08,757 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:21:08,757 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:21:08,757 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:21:08,758 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:21:08,759 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:21:08,802 INFO ]: Repository-Root is: /tmp [2018-06-22 11:21:08,818 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:21:08,824 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:21:08,825 INFO ]: Initializing SmtParser... [2018-06-22 11:21:08,825 INFO ]: SmtParser initialized [2018-06-22 11:21:08,826 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/022-horn.smt2 [2018-06-22 11:21:08,827 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 11:21:08,915 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/022-horn.smt2 unknown [2018-06-22 11:21:09,200 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/022-horn.smt2 [2018-06-22 11:21:09,205 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:21:09,219 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:21:09,220 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:21:09,220 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:21:09,220 INFO ]: ChcToBoogie initialized [2018-06-22 11:21:09,223 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:21:09" (1/1) ... [2018-06-22 11:21:09,283 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:09 Unit [2018-06-22 11:21:09,283 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:21:09,283 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:21:09,283 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:21:09,283 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:21:09,305 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:09" (1/1) ... [2018-06-22 11:21:09,305 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:09" (1/1) ... [2018-06-22 11:21:09,315 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:09" (1/1) ... [2018-06-22 11:21:09,315 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:09" (1/1) ... [2018-06-22 11:21:09,321 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:09" (1/1) ... [2018-06-22 11:21:09,322 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:09" (1/1) ... [2018-06-22 11:21:09,324 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:09" (1/1) ... [2018-06-22 11:21:09,326 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:21:09,326 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:21:09,326 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:21:09,326 INFO ]: RCFGBuilder initialized [2018-06-22 11:21:09,327 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:09" (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 11:21:09,351 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:21:09,351 INFO ]: Found specification of procedure False [2018-06-22 11:21:09,351 INFO ]: Found implementation of procedure False [2018-06-22 11:21:09,351 INFO ]: Specification and implementation of procedure INV1 given in one single declaration [2018-06-22 11:21:09,351 INFO ]: Found specification of procedure INV1 [2018-06-22 11:21:09,351 INFO ]: Found implementation of procedure INV1 [2018-06-22 11:21:09,351 INFO ]: Specification and implementation of procedure INV4 given in one single declaration [2018-06-22 11:21:09,351 INFO ]: Found specification of procedure INV4 [2018-06-22 11:21:09,351 INFO ]: Found implementation of procedure INV4 [2018-06-22 11:21:09,351 INFO ]: Specification and implementation of procedure INV2 given in one single declaration [2018-06-22 11:21:09,351 INFO ]: Found specification of procedure INV2 [2018-06-22 11:21:09,352 INFO ]: Found implementation of procedure INV2 [2018-06-22 11:21:09,352 INFO ]: Specification and implementation of procedure INV3 given in one single declaration [2018-06-22 11:21:09,352 INFO ]: Found specification of procedure INV3 [2018-06-22 11:21:09,352 INFO ]: Found implementation of procedure INV3 [2018-06-22 11:21:09,352 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:21:09,352 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:21:09,352 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 11:21:09,729 INFO ]: Using library mode [2018-06-22 11:21:09,729 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:21:09 BoogieIcfgContainer [2018-06-22 11:21:09,729 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:21:09,731 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:21:09,731 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:21:09,734 INFO ]: TraceAbstraction initialized [2018-06-22 11:21:09,734 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:21:09" (1/3) ... [2018-06-22 11:21:09,735 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17fd66b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:21:09, skipping insertion in model container [2018-06-22 11:21:09,735 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:09" (2/3) ... [2018-06-22 11:21:09,735 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17fd66b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:21:09, skipping insertion in model container [2018-06-22 11:21:09,735 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:21:09" (3/3) ... [2018-06-22 11:21:09,737 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:21:09,745 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:21:09,752 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:21:09,792 INFO ]: Using default assertion order modulation [2018-06-22 11:21:09,793 INFO ]: Interprodecural is true [2018-06-22 11:21:09,793 INFO ]: Hoare is false [2018-06-22 11:21:09,793 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:21:09,793 INFO ]: Backedges is TWOTRACK [2018-06-22 11:21:09,793 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:21:09,793 INFO ]: Difference is false [2018-06-22 11:21:09,793 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:21:09,793 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:21:09,807 INFO ]: Start isEmpty. Operand 40 states. [2018-06-22 11:21:09,822 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:21:09,822 INFO ]: Found error trace [2018-06-22 11:21:09,823 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:09,823 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:09,828 INFO ]: Analyzing trace with hash -1812575919, now seen corresponding path program 1 times [2018-06-22 11:21:09,829 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:09,830 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:09,864 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:09,864 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:09,864 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:09,895 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:09,992 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:21:09,994 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:21:09,994 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:21:09,995 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:21:10,005 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:21:10,006 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:10,008 INFO ]: Start difference. First operand 40 states. Second operand 4 states. [2018-06-22 11:21:10,247 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:10,248 INFO ]: Finished difference Result 40 states and 73 transitions. [2018-06-22 11:21:10,249 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:21:10,251 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:21:10,251 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:10,262 INFO ]: With dead ends: 40 [2018-06-22 11:21:10,262 INFO ]: Without dead ends: 40 [2018-06-22 11:21:10,264 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:10,277 INFO ]: Start minimizeSevpa. Operand 40 states. [2018-06-22 11:21:10,308 INFO ]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-06-22 11:21:10,312 INFO ]: Start removeUnreachable. Operand 40 states. [2018-06-22 11:21:10,314 INFO ]: Finished removeUnreachable. Reduced from 40 states to 40 states and 73 transitions. [2018-06-22 11:21:10,318 INFO ]: Start accepts. Automaton has 40 states and 73 transitions. Word has length 9 [2018-06-22 11:21:10,319 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:10,319 INFO ]: Abstraction has 40 states and 73 transitions. [2018-06-22 11:21:10,319 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:21:10,319 INFO ]: Start isEmpty. Operand 40 states and 73 transitions. [2018-06-22 11:21:10,324 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:21:10,324 INFO ]: Found error trace [2018-06-22 11:21:10,324 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:10,325 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:10,325 INFO ]: Analyzing trace with hash -1024867717, now seen corresponding path program 1 times [2018-06-22 11:21:10,325 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:10,325 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:10,326 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:10,326 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:10,326 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:10,351 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:10,543 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 8 [2018-06-22 11:21:10,689 INFO ]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:21:10,689 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:21:10,689 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 11:21:10,698 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:10,734 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:10,741 INFO ]: Computing forward predicates... [2018-06-22 11:21:10,911 INFO ]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:21:10,933 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:21:10,933 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 11:21:10,934 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:21:10,934 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:21:10,934 INFO ]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:21:10,934 INFO ]: Start difference. First operand 40 states and 73 transitions. Second operand 7 states. [2018-06-22 11:21:11,681 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:11,681 INFO ]: Finished difference Result 47 states and 99 transitions. [2018-06-22 11:21:11,682 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:21:11,682 INFO ]: Start accepts. Automaton has 7 states. Word has length 21 [2018-06-22 11:21:11,682 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:11,685 INFO ]: With dead ends: 47 [2018-06-22 11:21:11,685 INFO ]: Without dead ends: 47 [2018-06-22 11:21:11,687 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:21:11,688 INFO ]: Start minimizeSevpa. Operand 47 states. [2018-06-22 11:21:11,703 INFO ]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-06-22 11:21:11,703 INFO ]: Start removeUnreachable. Operand 43 states. [2018-06-22 11:21:11,705 INFO ]: Finished removeUnreachable. Reduced from 43 states to 43 states and 81 transitions. [2018-06-22 11:21:11,706 INFO ]: Start accepts. Automaton has 43 states and 81 transitions. Word has length 21 [2018-06-22 11:21:11,706 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:11,706 INFO ]: Abstraction has 43 states and 81 transitions. [2018-06-22 11:21:11,706 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:21:11,706 INFO ]: Start isEmpty. Operand 43 states and 81 transitions. [2018-06-22 11:21:11,709 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:21:11,709 INFO ]: Found error trace [2018-06-22 11:21:11,709 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:11,709 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:11,709 INFO ]: Analyzing trace with hash 2133562827, now seen corresponding path program 1 times [2018-06-22 11:21:11,709 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:11,710 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:11,710 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:11,710 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:11,710 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:11,742 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:11,793 INFO ]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:21:11,793 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:21:11,793 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 [2018-06-22 11:21:11,799 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:11,824 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:11,826 INFO ]: Computing forward predicates... [2018-06-22 11:21:11,969 INFO ]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:21:11,995 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:21:11,995 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 8 [2018-06-22 11:21:11,996 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:21:11,996 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:21:11,996 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:21:11,996 INFO ]: Start difference. First operand 43 states and 81 transitions. Second operand 8 states. [2018-06-22 11:21:12,574 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:12,574 INFO ]: Finished difference Result 49 states and 120 transitions. [2018-06-22 11:21:12,576 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:21:12,576 INFO ]: Start accepts. Automaton has 8 states. Word has length 21 [2018-06-22 11:21:12,576 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:12,579 INFO ]: With dead ends: 49 [2018-06-22 11:21:12,579 INFO ]: Without dead ends: 49 [2018-06-22 11:21:12,579 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:21:12,579 INFO ]: Start minimizeSevpa. Operand 49 states. [2018-06-22 11:21:12,595 INFO ]: Finished minimizeSevpa. Reduced states from 49 to 47. [2018-06-22 11:21:12,595 INFO ]: Start removeUnreachable. Operand 47 states. [2018-06-22 11:21:12,597 INFO ]: Finished removeUnreachable. Reduced from 47 states to 47 states and 106 transitions. [2018-06-22 11:21:12,598 INFO ]: Start accepts. Automaton has 47 states and 106 transitions. Word has length 21 [2018-06-22 11:21:12,604 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:12,604 INFO ]: Abstraction has 47 states and 106 transitions. [2018-06-22 11:21:12,604 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:21:12,604 INFO ]: Start isEmpty. Operand 47 states and 106 transitions. [2018-06-22 11:21:12,607 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:21:12,607 INFO ]: Found error trace [2018-06-22 11:21:12,607 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:12,607 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:12,607 INFO ]: Analyzing trace with hash 101617301, now seen corresponding path program 1 times [2018-06-22 11:21:12,607 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:12,607 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:12,608 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:12,608 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:12,608 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:12,634 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:12,669 INFO ]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:21:12,669 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:21:12,669 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 [2018-06-22 11:21:12,677 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:12,704 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:12,705 INFO ]: Computing forward predicates... [2018-06-22 11:21:12,801 INFO ]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:21:12,823 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:21:12,823 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 8 [2018-06-22 11:21:12,824 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:21:12,824 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:21:12,824 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:21:12,824 INFO ]: Start difference. First operand 47 states and 106 transitions. Second operand 8 states. [2018-06-22 11:21:13,261 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:13,261 INFO ]: Finished difference Result 49 states and 118 transitions. [2018-06-22 11:21:13,263 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:21:13,263 INFO ]: Start accepts. Automaton has 8 states. Word has length 21 [2018-06-22 11:21:13,263 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:13,265 INFO ]: With dead ends: 49 [2018-06-22 11:21:13,265 INFO ]: Without dead ends: 49 [2018-06-22 11:21:13,265 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:21:13,265 INFO ]: Start minimizeSevpa. Operand 49 states. [2018-06-22 11:21:13,283 INFO ]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-06-22 11:21:13,283 INFO ]: Start removeUnreachable. Operand 49 states. [2018-06-22 11:21:13,287 INFO ]: Finished removeUnreachable. Reduced from 49 states to 49 states and 118 transitions. [2018-06-22 11:21:13,287 INFO ]: Start accepts. Automaton has 49 states and 118 transitions. Word has length 21 [2018-06-22 11:21:13,287 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:13,287 INFO ]: Abstraction has 49 states and 118 transitions. [2018-06-22 11:21:13,287 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:21:13,287 INFO ]: Start isEmpty. Operand 49 states and 118 transitions. [2018-06-22 11:21:13,290 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:21:13,290 INFO ]: Found error trace [2018-06-22 11:21:13,290 INFO ]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:13,290 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:13,290 INFO ]: Analyzing trace with hash 1225443801, now seen corresponding path program 1 times [2018-06-22 11:21:13,290 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:13,290 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:13,294 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:13,294 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:13,294 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:13,325 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:13,366 INFO ]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-06-22 11:21:13,366 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:21:13,366 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:21:13,367 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:21:13,367 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:21:13,367 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:13,367 INFO ]: Start difference. First operand 49 states and 118 transitions. Second operand 4 states. [2018-06-22 11:21:13,453 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:13,453 INFO ]: Finished difference Result 60 states and 150 transitions. [2018-06-22 11:21:13,453 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:21:13,453 INFO ]: Start accepts. Automaton has 4 states. Word has length 29 [2018-06-22 11:21:13,454 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:13,455 INFO ]: With dead ends: 60 [2018-06-22 11:21:13,455 INFO ]: Without dead ends: 60 [2018-06-22 11:21:13,456 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 11:21:13,456 INFO ]: Start minimizeSevpa. Operand 60 states. [2018-06-22 11:21:13,468 INFO ]: Finished minimizeSevpa. Reduced states from 60 to 58. [2018-06-22 11:21:13,468 INFO ]: Start removeUnreachable. Operand 58 states. [2018-06-22 11:21:13,470 INFO ]: Finished removeUnreachable. Reduced from 58 states to 58 states and 144 transitions. [2018-06-22 11:21:13,470 INFO ]: Start accepts. Automaton has 58 states and 144 transitions. Word has length 29 [2018-06-22 11:21:13,471 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:13,471 INFO ]: Abstraction has 58 states and 144 transitions. [2018-06-22 11:21:13,471 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:21:13,471 INFO ]: Start isEmpty. Operand 58 states and 144 transitions. [2018-06-22 11:21:13,473 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:21:13,473 INFO ]: Found error trace [2018-06-22 11:21:13,473 INFO ]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:13,473 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:13,473 INFO ]: Analyzing trace with hash 1305607699, now seen corresponding path program 1 times [2018-06-22 11:21:13,473 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:13,473 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:13,474 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:13,474 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:13,474 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:13,488 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:13,523 INFO ]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-06-22 11:21:13,523 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:21:13,523 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:21:13,523 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:21:13,524 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:21:13,524 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:13,524 INFO ]: Start difference. First operand 58 states and 144 transitions. Second operand 4 states. [2018-06-22 11:21:13,625 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:13,626 INFO ]: Finished difference Result 69 states and 174 transitions. [2018-06-22 11:21:13,626 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:21:13,626 INFO ]: Start accepts. Automaton has 4 states. Word has length 29 [2018-06-22 11:21:13,626 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:13,628 INFO ]: With dead ends: 69 [2018-06-22 11:21:13,628 INFO ]: Without dead ends: 67 [2018-06-22 11:21:13,628 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 11:21:13,628 INFO ]: Start minimizeSevpa. Operand 67 states. [2018-06-22 11:21:13,645 INFO ]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-06-22 11:21:13,645 INFO ]: Start removeUnreachable. Operand 67 states. [2018-06-22 11:21:13,647 INFO ]: Finished removeUnreachable. Reduced from 67 states to 67 states and 162 transitions. [2018-06-22 11:21:13,647 INFO ]: Start accepts. Automaton has 67 states and 162 transitions. Word has length 29 [2018-06-22 11:21:13,647 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:13,647 INFO ]: Abstraction has 67 states and 162 transitions. [2018-06-22 11:21:13,647 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:21:13,647 INFO ]: Start isEmpty. Operand 67 states and 162 transitions. [2018-06-22 11:21:13,649 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:21:13,649 INFO ]: Found error trace [2018-06-22 11:21:13,649 INFO ]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:13,649 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:13,649 INFO ]: Analyzing trace with hash 1519785103, now seen corresponding path program 1 times [2018-06-22 11:21:13,649 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:13,649 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:13,650 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:13,650 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:13,650 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:13,664 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:13,710 INFO ]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-06-22 11:21:13,710 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:21:13,710 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:21:13,710 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:21:13,712 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:21:13,712 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:13,712 INFO ]: Start difference. First operand 67 states and 162 transitions. Second operand 4 states. [2018-06-22 11:21:13,753 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:13,753 INFO ]: Finished difference Result 57 states and 140 transitions. [2018-06-22 11:21:13,754 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:21:13,754 INFO ]: Start accepts. Automaton has 4 states. Word has length 29 [2018-06-22 11:21:13,754 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:13,755 INFO ]: With dead ends: 57 [2018-06-22 11:21:13,755 INFO ]: Without dead ends: 43 [2018-06-22 11:21:13,756 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:13,756 INFO ]: Start minimizeSevpa. Operand 43 states. [2018-06-22 11:21:13,763 INFO ]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-06-22 11:21:13,763 INFO ]: Start removeUnreachable. Operand 43 states. [2018-06-22 11:21:13,764 INFO ]: Finished removeUnreachable. Reduced from 43 states to 43 states and 88 transitions. [2018-06-22 11:21:13,764 INFO ]: Start accepts. Automaton has 43 states and 88 transitions. Word has length 29 [2018-06-22 11:21:13,764 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:13,764 INFO ]: Abstraction has 43 states and 88 transitions. [2018-06-22 11:21:13,764 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:21:13,764 INFO ]: Start isEmpty. Operand 43 states and 88 transitions. [2018-06-22 11:21:13,765 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 11:21:13,765 INFO ]: Found error trace [2018-06-22 11:21:13,765 INFO ]: trace histogram [5, 3, 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] [2018-06-22 11:21:13,766 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:13,766 INFO ]: Analyzing trace with hash -1670119051, now seen corresponding path program 1 times [2018-06-22 11:21:13,766 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:13,766 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:13,766 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:13,766 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:13,766 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:13,780 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:13,871 INFO ]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 11:21:13,871 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:21:13,871 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:21:13,871 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:21:13,871 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:21:13,871 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:13,872 INFO ]: Start difference. First operand 43 states and 88 transitions. Second operand 4 states. [2018-06-22 11:21:13,944 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:13,944 INFO ]: Finished difference Result 45 states and 89 transitions. [2018-06-22 11:21:13,945 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:21:13,945 INFO ]: Start accepts. Automaton has 4 states. Word has length 33 [2018-06-22 11:21:13,945 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:13,946 INFO ]: With dead ends: 45 [2018-06-22 11:21:13,946 INFO ]: Without dead ends: 45 [2018-06-22 11:21:13,946 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:13,946 INFO ]: Start minimizeSevpa. Operand 45 states. [2018-06-22 11:21:13,953 INFO ]: Finished minimizeSevpa. Reduced states from 45 to 43. [2018-06-22 11:21:13,953 INFO ]: Start removeUnreachable. Operand 43 states. [2018-06-22 11:21:13,954 INFO ]: Finished removeUnreachable. Reduced from 43 states to 43 states and 86 transitions. [2018-06-22 11:21:13,954 INFO ]: Start accepts. Automaton has 43 states and 86 transitions. Word has length 33 [2018-06-22 11:21:13,955 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:13,955 INFO ]: Abstraction has 43 states and 86 transitions. [2018-06-22 11:21:13,955 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:21:13,955 INFO ]: Start isEmpty. Operand 43 states and 86 transitions. [2018-06-22 11:21:13,956 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 11:21:13,956 INFO ]: Found error trace [2018-06-22 11:21:13,956 INFO ]: trace histogram [5, 3, 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] [2018-06-22 11:21:13,956 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:13,956 INFO ]: Analyzing trace with hash 85649215, now seen corresponding path program 1 times [2018-06-22 11:21:13,956 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:13,956 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:13,957 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:13,957 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:13,957 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:13,971 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:14,019 INFO ]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 11:21:14,019 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:21:14,019 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:21:14,020 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:21:14,020 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:21:14,020 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:14,020 INFO ]: Start difference. First operand 43 states and 86 transitions. Second operand 4 states. [2018-06-22 11:21:14,086 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:14,086 INFO ]: Finished difference Result 45 states and 87 transitions. [2018-06-22 11:21:14,087 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:21:14,087 INFO ]: Start accepts. Automaton has 4 states. Word has length 33 [2018-06-22 11:21:14,087 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:14,087 INFO ]: With dead ends: 45 [2018-06-22 11:21:14,087 INFO ]: Without dead ends: 45 [2018-06-22 11:21:14,088 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:14,088 INFO ]: Start minimizeSevpa. Operand 45 states. [2018-06-22 11:21:14,092 INFO ]: Finished minimizeSevpa. Reduced states from 45 to 43. [2018-06-22 11:21:14,092 INFO ]: Start removeUnreachable. Operand 43 states. [2018-06-22 11:21:14,093 INFO ]: Finished removeUnreachable. Reduced from 43 states to 43 states and 84 transitions. [2018-06-22 11:21:14,094 INFO ]: Start accepts. Automaton has 43 states and 84 transitions. Word has length 33 [2018-06-22 11:21:14,094 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:14,094 INFO ]: Abstraction has 43 states and 84 transitions. [2018-06-22 11:21:14,094 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:21:14,094 INFO ]: Start isEmpty. Operand 43 states and 84 transitions. [2018-06-22 11:21:14,095 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:21:14,095 INFO ]: Found error trace [2018-06-22 11:21:14,095 INFO ]: trace histogram [7, 4, 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] [2018-06-22 11:21:14,095 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:14,095 INFO ]: Analyzing trace with hash -1099568353, now seen corresponding path program 2 times [2018-06-22 11:21:14,095 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:14,095 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:14,096 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:14,096 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:14,096 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:14,131 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:14,217 INFO ]: Checked inductivity of 69 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-06-22 11:21:14,217 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:21:14,217 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 [2018-06-22 11:21:14,226 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:21:14,286 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:21:14,286 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:14,290 INFO ]: Computing forward predicates... [2018-06-22 11:21:14,800 INFO ]: Checked inductivity of 69 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-06-22 11:21:14,819 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:21:14,819 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2018-06-22 11:21:14,819 INFO ]: Interpolant automaton has 13 states [2018-06-22 11:21:14,819 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 11:21:14,819 INFO ]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:21:14,820 INFO ]: Start difference. First operand 43 states and 84 transitions. Second operand 13 states. [2018-06-22 11:21:15,035 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:15,035 INFO ]: Finished difference Result 39 states and 73 transitions. [2018-06-22 11:21:15,036 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:21:15,036 INFO ]: Start accepts. Automaton has 13 states. Word has length 45 [2018-06-22 11:21:15,036 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:15,037 INFO ]: With dead ends: 39 [2018-06-22 11:21:15,037 INFO ]: Without dead ends: 38 [2018-06-22 11:21:15,037 INFO ]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:21:15,037 INFO ]: Start minimizeSevpa. Operand 38 states. [2018-06-22 11:21:15,043 INFO ]: Finished minimizeSevpa. Reduced states from 38 to 31. [2018-06-22 11:21:15,043 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-22 11:21:15,044 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 48 transitions. [2018-06-22 11:21:15,044 INFO ]: Start accepts. Automaton has 31 states and 48 transitions. Word has length 45 [2018-06-22 11:21:15,044 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:15,044 INFO ]: Abstraction has 31 states and 48 transitions. [2018-06-22 11:21:15,044 INFO ]: Interpolant automaton has 13 states. [2018-06-22 11:21:15,044 INFO ]: Start isEmpty. Operand 31 states and 48 transitions. [2018-06-22 11:21:15,045 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:21:15,045 INFO ]: Found error trace [2018-06-22 11:21:15,045 INFO ]: trace histogram [7, 4, 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] [2018-06-22 11:21:15,045 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:15,045 INFO ]: Analyzing trace with hash -418692119, now seen corresponding path program 2 times [2018-06-22 11:21:15,045 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:15,045 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:15,046 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:15,046 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:21:15,046 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:15,062 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:15,122 INFO ]: Checked inductivity of 69 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-06-22 11:21:15,122 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:21:15,122 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:21:15,128 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:21:15,159 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:21:15,159 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:15,163 INFO ]: Computing forward predicates... [2018-06-22 11:21:15,302 INFO ]: Checked inductivity of 69 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-06-22 11:21:15,325 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:21:15,325 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2018-06-22 11:21:15,325 INFO ]: Interpolant automaton has 13 states [2018-06-22 11:21:15,325 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 11:21:15,325 INFO ]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:21:15,326 INFO ]: Start difference. First operand 31 states and 48 transitions. Second operand 13 states. [2018-06-22 11:21:15,782 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:15,782 INFO ]: Finished difference Result 44 states and 91 transitions. [2018-06-22 11:21:15,782 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:21:15,782 INFO ]: Start accepts. Automaton has 13 states. Word has length 45 [2018-06-22 11:21:15,783 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:15,783 INFO ]: With dead ends: 44 [2018-06-22 11:21:15,783 INFO ]: Without dead ends: 44 [2018-06-22 11:21:15,783 INFO ]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:21:15,783 INFO ]: Start minimizeSevpa. Operand 44 states. [2018-06-22 11:21:15,788 INFO ]: Finished minimizeSevpa. Reduced states from 44 to 34. [2018-06-22 11:21:15,788 INFO ]: Start removeUnreachable. Operand 34 states. [2018-06-22 11:21:15,789 INFO ]: Finished removeUnreachable. Reduced from 34 states to 34 states and 57 transitions. [2018-06-22 11:21:15,789 INFO ]: Start accepts. Automaton has 34 states and 57 transitions. Word has length 45 [2018-06-22 11:21:15,789 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:15,789 INFO ]: Abstraction has 34 states and 57 transitions. [2018-06-22 11:21:15,789 INFO ]: Interpolant automaton has 13 states. [2018-06-22 11:21:15,789 INFO ]: Start isEmpty. Operand 34 states and 57 transitions. [2018-06-22 11:21:15,790 INFO ]: Finished isEmpty. Found accepting run of length 58 [2018-06-22 11:21:15,790 INFO ]: Found error trace [2018-06-22 11:21:15,790 INFO ]: trace histogram [9, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:15,790 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:15,790 INFO ]: Analyzing trace with hash -1445440365, now seen corresponding path program 3 times [2018-06-22 11:21:15,790 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:15,790 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:15,791 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:15,791 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:21:15,791 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:15,807 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:15,897 INFO ]: Checked inductivity of 126 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-06-22 11:21:15,897 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:21:15,897 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:21:15,905 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:21:15,987 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 11:21:15,987 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:15,992 INFO ]: Computing forward predicates... [2018-06-22 11:21:16,160 INFO ]: Checked inductivity of 126 backedges. 68 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-06-22 11:21:16,181 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:21:16,181 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 10] total 12 [2018-06-22 11:21:16,181 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:21:16,181 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:21:16,181 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:21:16,181 INFO ]: Start difference. First operand 34 states and 57 transitions. Second operand 12 states. [2018-06-22 11:21:16,670 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:16,671 INFO ]: Finished difference Result 45 states and 83 transitions. [2018-06-22 11:21:16,675 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:21:16,675 INFO ]: Start accepts. Automaton has 12 states. Word has length 57 [2018-06-22 11:21:16,675 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:16,675 INFO ]: With dead ends: 45 [2018-06-22 11:21:16,675 INFO ]: Without dead ends: 0 [2018-06-22 11:21:16,676 INFO ]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:21:16,676 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:21:16,676 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:21:16,676 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:21:16,676 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:21:16,676 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2018-06-22 11:21:16,676 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:16,676 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:21:16,676 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:21:16,676 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:21:16,676 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:21:16,681 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:21:16 BoogieIcfgContainer [2018-06-22 11:21:16,681 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:21:16,682 INFO ]: Toolchain (without parser) took 7476.82 ms. Allocated memory was 304.1 MB in the beginning and 389.5 MB in the end (delta: 85.5 MB). Free memory was 256.5 MB in the beginning and 327.8 MB in the end (delta: -71.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 3.6 GB. [2018-06-22 11:21:16,683 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 304.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:21:16,683 INFO ]: ChcToBoogie took 63.22 ms. Allocated memory is still 304.1 MB. Free memory was 255.5 MB in the beginning and 253.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:21:16,684 INFO ]: Boogie Preprocessor took 42.47 ms. Allocated memory is still 304.1 MB. Free memory was 253.5 MB in the beginning and 252.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:21:16,684 INFO ]: RCFGBuilder took 403.03 ms. Allocated memory is still 304.1 MB. Free memory was 252.4 MB in the beginning and 236.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:21:16,685 INFO ]: TraceAbstraction took 6950.50 ms. Allocated memory was 304.1 MB in the beginning and 389.5 MB in the end (delta: 85.5 MB). Free memory was 236.4 MB in the beginning and 327.8 MB in the end (delta: -91.3 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:21:16,687 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 304.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 63.22 ms. Allocated memory is still 304.1 MB. Free memory was 255.5 MB in the beginning and 253.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 42.47 ms. Allocated memory is still 304.1 MB. Free memory was 253.5 MB in the beginning and 252.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 403.03 ms. Allocated memory is still 304.1 MB. Free memory was 252.4 MB in the beginning and 236.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 6950.50 ms. Allocated memory was 304.1 MB in the beginning and 389.5 MB in the end (delta: 85.5 MB). Free memory was 236.4 MB in the beginning and 327.8 MB in the end (delta: -91.3 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 6 procedures, 40 locations, 1 error locations. SAFE Result, 6.8s OverallTime, 12 OverallIterations, 9 TraceHistogramMax, 3.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 557 SDtfs, 48 SDslu, 1474 SDs, 0 SdLazy, 1678 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 292 GetRequests, 205 SyntacticMatches, 5 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred 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: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 29 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 582 NumberOfCodeBlocks, 572 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 564 ConstructedInterpolants, 0 QuantifiedInterpolants, 48504 SizeOfPredicates, 31 NumberOfNonLiveVariables, 1144 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 587/705 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/022-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-21-16-697.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/022-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-21-16-697.csv Received shutdown request...