java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/bsearch.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:13:56,691 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:13:56,693 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:13:56,708 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:13:56,709 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:13:56,710 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:13:56,711 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:13:56,714 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:13:56,715 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:13:56,716 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:13:56,718 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:13:56,718 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:13:56,719 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:13:56,720 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:13:56,721 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:13:56,723 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:13:56,725 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:13:56,734 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:13:56,735 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:13:56,736 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:13:56,737 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:13:56,742 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:13:56,742 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:13:56,742 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:13:56,743 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:13:56,744 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:13:56,744 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:13:56,747 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:13:56,748 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:13:56,748 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:13:56,749 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:13:56,749 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:13:56,750 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:13:56,750 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:13:56,753 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:13:56,753 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:13:56,773 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:13:56,773 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:13:56,773 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:13:56,774 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:13:56,777 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:13:56,778 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:13:56,778 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:13:56,778 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:13:56,778 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:13:56,778 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:13:56,779 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:13:56,779 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:13:56,779 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:13:56,779 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:13:56,779 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:13:56,779 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:13:56,780 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:13:56,783 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:13:56,783 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:13:56,783 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:13:56,783 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:13:56,785 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:13:56,785 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:13:56,835 INFO ]: Repository-Root is: /tmp [2018-06-24 21:13:56,851 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:13:56,858 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:13:56,859 INFO ]: Initializing SmtParser... [2018-06-24 21:13:56,859 INFO ]: SmtParser initialized [2018-06-24 21:13:56,860 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/bsearch.smt2 [2018-06-24 21:13:56,861 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 21:13:56,947 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/bsearch.smt2 unknown [2018-06-24 21:13:57,252 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/bsearch.smt2 [2018-06-24 21:13:57,257 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:13:57,264 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:13:57,265 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:13:57,265 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:13:57,265 INFO ]: ChcToBoogie initialized [2018-06-24 21:13:57,268 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:13:57" (1/1) ... [2018-06-24 21:13:57,327 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:57 Unit [2018-06-24 21:13:57,327 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:13:57,328 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:13:57,328 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:13:57,328 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:13:57,348 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:57" (1/1) ... [2018-06-24 21:13:57,348 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:57" (1/1) ... [2018-06-24 21:13:57,355 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:57" (1/1) ... [2018-06-24 21:13:57,355 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:57" (1/1) ... [2018-06-24 21:13:57,363 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:57" (1/1) ... [2018-06-24 21:13:57,366 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:57" (1/1) ... [2018-06-24 21:13:57,368 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:57" (1/1) ... [2018-06-24 21:13:57,369 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:13:57,370 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:13:57,370 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:13:57,370 INFO ]: RCFGBuilder initialized [2018-06-24 21:13:57,371 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:57" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:13:57,385 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:13:57,385 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:13:57,385 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:13:57,385 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:13:57,385 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:13:57,385 INFO ]: Found implementation of procedure Ultimate.START [2018-06-24 21:13:57,773 INFO ]: Using library mode [2018-06-24 21:13:57,774 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:13:57 BoogieIcfgContainer [2018-06-24 21:13:57,774 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:13:57,774 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:13:57,774 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:13:57,775 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:13:57,776 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:13:57" (1/1) ... [2018-06-24 21:13:57,792 INFO ]: Initial Icfg 27 locations, 37 edges [2018-06-24 21:13:57,794 INFO ]: Using Remove infeasible edges [2018-06-24 21:13:57,794 INFO ]: Using Maximize final states [2018-06-24 21:13:57,795 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:13:57,795 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:13:57,797 INFO ]: Using Remove sink states [2018-06-24 21:13:57,797 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:13:57,797 INFO ]: Using Use SBE [2018-06-24 21:13:57,824 INFO ]: SBE split 2 edges [2018-06-24 21:13:57,829 INFO ]: Removed 4 edges and 2 locations because of local infeasibility [2018-06-24 21:13:57,831 INFO ]: 0 new accepting states [2018-06-24 21:13:58,127 INFO ]: Removed 37 edges and 10 locations by large block encoding [2018-06-24 21:13:58,130 INFO ]: Removed 4 edges and 1 locations by removing sink states [2018-06-24 21:13:58,132 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:13:58,132 INFO ]: 0 new accepting states [2018-06-24 21:13:58,132 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:13:58,132 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:13:58,133 INFO ]: Encoded RCFG 14 locations, 24 edges [2018-06-24 21:13:58,133 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:13:58 BasicIcfg [2018-06-24 21:13:58,133 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:13:58,134 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:13:58,134 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:13:58,138 INFO ]: TraceAbstraction initialized [2018-06-24 21:13:58,139 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:13:57" (1/4) ... [2018-06-24 21:13:58,140 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3330afa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:13:58, skipping insertion in model container [2018-06-24 21:13:58,140 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:57" (2/4) ... [2018-06-24 21:13:58,140 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3330afa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:13:58, skipping insertion in model container [2018-06-24 21:13:58,140 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:13:57" (3/4) ... [2018-06-24 21:13:58,140 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3330afa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:13:58, skipping insertion in model container [2018-06-24 21:13:58,140 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:13:58" (4/4) ... [2018-06-24 21:13:58,142 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:13:58,152 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:13:58,157 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:13:58,192 INFO ]: Using default assertion order modulation [2018-06-24 21:13:58,192 INFO ]: Interprodecural is true [2018-06-24 21:13:58,193 INFO ]: Hoare is false [2018-06-24 21:13:58,193 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:13:58,193 INFO ]: Backedges is TWOTRACK [2018-06-24 21:13:58,193 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:13:58,193 INFO ]: Difference is false [2018-06-24 21:13:58,193 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:13:58,193 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:13:58,202 INFO ]: Start isEmpty. Operand 14 states. [2018-06-24 21:13:58,215 INFO ]: Finished isEmpty. Found accepting run of length 5 [2018-06-24 21:13:58,216 INFO ]: Found error trace [2018-06-24 21:13:58,217 INFO ]: trace histogram [1, 1, 1, 1] [2018-06-24 21:13:58,218 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:13:58,223 INFO ]: Analyzing trace with hash 1243594, now seen corresponding path program 1 times [2018-06-24 21:13:58,225 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:13:58,225 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:13:58,259 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:58,259 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:13:58,259 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:58,289 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:13:58,383 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:13:58,385 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:13:58,386 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:13:58,388 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:13:58,403 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:13:58,404 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:13:58,406 INFO ]: Start difference. First operand 14 states. Second operand 3 states. [2018-06-24 21:13:58,723 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:13:58,723 INFO ]: Finished difference Result 25 states and 44 transitions. [2018-06-24 21:13:58,724 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:13:58,725 INFO ]: Start accepts. Automaton has 3 states. Word has length 4 [2018-06-24 21:13:58,725 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:13:58,734 INFO ]: With dead ends: 25 [2018-06-24 21:13:58,734 INFO ]: Without dead ends: 25 [2018-06-24 21:13:58,737 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:13:58,755 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-24 21:13:58,791 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-24 21:13:58,792 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-24 21:13:58,795 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 44 transitions. [2018-06-24 21:13:58,796 INFO ]: Start accepts. Automaton has 25 states and 44 transitions. Word has length 4 [2018-06-24 21:13:58,797 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:13:58,797 INFO ]: Abstraction has 25 states and 44 transitions. [2018-06-24 21:13:58,797 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:13:58,797 INFO ]: Start isEmpty. Operand 25 states and 44 transitions. [2018-06-24 21:13:58,800 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-24 21:13:58,800 INFO ]: Found error trace [2018-06-24 21:13:58,801 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:13:58,801 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:13:58,801 INFO ]: Analyzing trace with hash -1839006021, now seen corresponding path program 1 times [2018-06-24 21:13:58,801 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:13:58,801 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:13:58,808 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:58,808 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:13:58,808 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:58,833 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:13:58,928 INFO ]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:13:58,928 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:13:58,929 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:13:58,940 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:13:59,004 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:13:59,013 INFO ]: Computing forward predicates... [2018-06-24 21:13:59,036 INFO ]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-24 21:13:59,069 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:13:59,069 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2018-06-24 21:13:59,069 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:13:59,070 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:13:59,070 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:13:59,070 INFO ]: Start difference. First operand 25 states and 44 transitions. Second operand 3 states. [2018-06-24 21:13:59,449 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:13:59,449 INFO ]: Finished difference Result 36 states and 62 transitions. [2018-06-24 21:13:59,450 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:13:59,450 INFO ]: Start accepts. Automaton has 3 states. Word has length 13 [2018-06-24 21:13:59,450 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:13:59,452 INFO ]: With dead ends: 36 [2018-06-24 21:13:59,452 INFO ]: Without dead ends: 36 [2018-06-24 21:13:59,453 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:13:59,453 INFO ]: Start minimizeSevpa. Operand 36 states. [2018-06-24 21:13:59,475 INFO ]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-06-24 21:13:59,475 INFO ]: Start removeUnreachable. Operand 36 states. [2018-06-24 21:13:59,477 INFO ]: Finished removeUnreachable. Reduced from 36 states to 36 states and 62 transitions. [2018-06-24 21:13:59,477 INFO ]: Start accepts. Automaton has 36 states and 62 transitions. Word has length 13 [2018-06-24 21:13:59,477 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:13:59,477 INFO ]: Abstraction has 36 states and 62 transitions. [2018-06-24 21:13:59,477 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:13:59,477 INFO ]: Start isEmpty. Operand 36 states and 62 transitions. [2018-06-24 21:13:59,479 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-24 21:13:59,479 INFO ]: Found error trace [2018-06-24 21:13:59,479 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:13:59,480 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:13:59,482 INFO ]: Analyzing trace with hash -1158947651, now seen corresponding path program 1 times [2018-06-24 21:13:59,482 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:13:59,482 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:13:59,483 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:59,483 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:13:59,483 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:59,510 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:13:59,594 INFO ]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:13:59,594 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:13:59,594 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:13:59,602 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:13:59,635 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:13:59,637 INFO ]: Computing forward predicates... [2018-06-24 21:13:59,946 INFO ]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-24 21:13:59,983 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:13:59,983 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2018-06-24 21:13:59,983 INFO ]: Interpolant automaton has 7 states [2018-06-24 21:13:59,983 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 21:13:59,983 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:13:59,984 INFO ]: Start difference. First operand 36 states and 62 transitions. Second operand 7 states. [2018-06-24 21:14:01,172 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:01,173 INFO ]: Finished difference Result 129 states and 316 transitions. [2018-06-24 21:14:01,173 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-24 21:14:01,173 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-24 21:14:01,173 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:01,184 INFO ]: With dead ends: 129 [2018-06-24 21:14:01,184 INFO ]: Without dead ends: 129 [2018-06-24 21:14:01,185 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-06-24 21:14:01,185 INFO ]: Start minimizeSevpa. Operand 129 states. [2018-06-24 21:14:01,233 INFO ]: Finished minimizeSevpa. Reduced states from 129 to 56. [2018-06-24 21:14:01,233 INFO ]: Start removeUnreachable. Operand 56 states. [2018-06-24 21:14:01,235 INFO ]: Finished removeUnreachable. Reduced from 56 states to 56 states and 106 transitions. [2018-06-24 21:14:01,235 INFO ]: Start accepts. Automaton has 56 states and 106 transitions. Word has length 13 [2018-06-24 21:14:01,235 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:01,235 INFO ]: Abstraction has 56 states and 106 transitions. [2018-06-24 21:14:01,235 INFO ]: Interpolant automaton has 7 states. [2018-06-24 21:14:01,235 INFO ]: Start isEmpty. Operand 56 states and 106 transitions. [2018-06-24 21:14:01,238 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-24 21:14:01,238 INFO ]: Found error trace [2018-06-24 21:14:01,238 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:14:01,239 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:01,239 INFO ]: Analyzing trace with hash 1199778860, now seen corresponding path program 1 times [2018-06-24 21:14:01,239 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:01,239 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:01,240 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:01,240 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:01,240 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:01,244 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:01,269 INFO ]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-24 21:14:01,269 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:14:01,269 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:14:01,270 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:14:01,270 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:14:01,270 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:14:01,270 INFO ]: Start difference. First operand 56 states and 106 transitions. Second operand 3 states. [2018-06-24 21:14:01,334 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:01,334 INFO ]: Finished difference Result 66 states and 122 transitions. [2018-06-24 21:14:01,334 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:14:01,335 INFO ]: Start accepts. Automaton has 3 states. Word has length 13 [2018-06-24 21:14:01,335 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:01,336 INFO ]: With dead ends: 66 [2018-06-24 21:14:01,336 INFO ]: Without dead ends: 56 [2018-06-24 21:14:01,337 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:14:01,337 INFO ]: Start minimizeSevpa. Operand 56 states. [2018-06-24 21:14:01,347 INFO ]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-06-24 21:14:01,347 INFO ]: Start removeUnreachable. Operand 56 states. [2018-06-24 21:14:01,349 INFO ]: Finished removeUnreachable. Reduced from 56 states to 56 states and 105 transitions. [2018-06-24 21:14:01,349 INFO ]: Start accepts. Automaton has 56 states and 105 transitions. Word has length 13 [2018-06-24 21:14:01,349 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:01,349 INFO ]: Abstraction has 56 states and 105 transitions. [2018-06-24 21:14:01,349 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:14:01,349 INFO ]: Start isEmpty. Operand 56 states and 105 transitions. [2018-06-24 21:14:01,353 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-24 21:14:01,353 INFO ]: Found error trace [2018-06-24 21:14:01,353 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:14:01,353 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:01,353 INFO ]: Analyzing trace with hash -771699494, now seen corresponding path program 1 times [2018-06-24 21:14:01,353 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:01,353 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:01,354 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:01,354 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:01,354 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:01,371 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:01,400 INFO ]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-24 21:14:01,400 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:14:01,400 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:14:01,400 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:14:01,400 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:14:01,400 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:14:01,401 INFO ]: Start difference. First operand 56 states and 105 transitions. Second operand 3 states. [2018-06-24 21:14:01,431 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:01,431 INFO ]: Finished difference Result 80 states and 145 transitions. [2018-06-24 21:14:01,432 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:14:01,432 INFO ]: Start accepts. Automaton has 3 states. Word has length 13 [2018-06-24 21:14:01,432 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:01,434 INFO ]: With dead ends: 80 [2018-06-24 21:14:01,434 INFO ]: Without dead ends: 80 [2018-06-24 21:14:01,434 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:14:01,434 INFO ]: Start minimizeSevpa. Operand 80 states. [2018-06-24 21:14:01,455 INFO ]: Finished minimizeSevpa. Reduced states from 80 to 60. [2018-06-24 21:14:01,455 INFO ]: Start removeUnreachable. Operand 60 states. [2018-06-24 21:14:01,456 INFO ]: Finished removeUnreachable. Reduced from 60 states to 60 states and 113 transitions. [2018-06-24 21:14:01,456 INFO ]: Start accepts. Automaton has 60 states and 113 transitions. Word has length 13 [2018-06-24 21:14:01,456 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:01,457 INFO ]: Abstraction has 60 states and 113 transitions. [2018-06-24 21:14:01,457 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:14:01,457 INFO ]: Start isEmpty. Operand 60 states and 113 transitions. [2018-06-24 21:14:01,460 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-24 21:14:01,460 INFO ]: Found error trace [2018-06-24 21:14:01,460 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:14:01,460 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:01,461 INFO ]: Analyzing trace with hash 440539566, now seen corresponding path program 1 times [2018-06-24 21:14:01,461 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:01,461 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:01,461 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:01,461 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:01,461 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:01,489 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:01,592 INFO ]: Checked inductivity of 37 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-24 21:14:01,592 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:14:01,592 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 [2018-06-24 21:14:01,600 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:01,638 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:01,641 INFO ]: Computing forward predicates... [2018-06-24 21:14:01,707 INFO ]: Checked inductivity of 37 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-24 21:14:01,727 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:14:01,727 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2018-06-24 21:14:01,727 INFO ]: Interpolant automaton has 9 states [2018-06-24 21:14:01,727 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-24 21:14:01,727 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-24 21:14:01,727 INFO ]: Start difference. First operand 60 states and 113 transitions. Second operand 9 states. [2018-06-24 21:14:02,233 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:02,233 INFO ]: Finished difference Result 88 states and 170 transitions. [2018-06-24 21:14:02,234 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-24 21:14:02,234 INFO ]: Start accepts. Automaton has 9 states. Word has length 27 [2018-06-24 21:14:02,234 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:02,236 INFO ]: With dead ends: 88 [2018-06-24 21:14:02,236 INFO ]: Without dead ends: 81 [2018-06-24 21:14:02,236 INFO ]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-06-24 21:14:02,236 INFO ]: Start minimizeSevpa. Operand 81 states. [2018-06-24 21:14:02,247 INFO ]: Finished minimizeSevpa. Reduced states from 81 to 72. [2018-06-24 21:14:02,247 INFO ]: Start removeUnreachable. Operand 72 states. [2018-06-24 21:14:02,249 INFO ]: Finished removeUnreachable. Reduced from 72 states to 72 states and 139 transitions. [2018-06-24 21:14:02,249 INFO ]: Start accepts. Automaton has 72 states and 139 transitions. Word has length 27 [2018-06-24 21:14:02,249 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:02,249 INFO ]: Abstraction has 72 states and 139 transitions. [2018-06-24 21:14:02,249 INFO ]: Interpolant automaton has 9 states. [2018-06-24 21:14:02,249 INFO ]: Start isEmpty. Operand 72 states and 139 transitions. [2018-06-24 21:14:02,252 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-24 21:14:02,252 INFO ]: Found error trace [2018-06-24 21:14:02,252 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:14:02,252 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:02,252 INFO ]: Analyzing trace with hash -1415204310, now seen corresponding path program 1 times [2018-06-24 21:14:02,252 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:02,252 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:02,253 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:02,253 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:02,253 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:02,278 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:02,490 INFO ]: Checked inductivity of 37 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-06-24 21:14:02,490 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:14:02,490 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) [2018-06-24 21:14:02,505 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:14:02,555 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:02,559 INFO ]: Computing forward predicates... [2018-06-24 21:14:02,781 INFO ]: Checked inductivity of 37 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-24 21:14:02,800 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:14:02,800 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 12 [2018-06-24 21:14:02,801 INFO ]: Interpolant automaton has 12 states [2018-06-24 21:14:02,801 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-24 21:14:02,801 INFO ]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-06-24 21:14:02,801 INFO ]: Start difference. First operand 72 states and 139 transitions. Second operand 12 states. [2018-06-24 21:14:03,836 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:03,836 INFO ]: Finished difference Result 133 states and 308 transitions. [2018-06-24 21:14:03,837 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-24 21:14:03,837 INFO ]: Start accepts. Automaton has 12 states. Word has length 27 [2018-06-24 21:14:03,838 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:03,840 INFO ]: With dead ends: 133 [2018-06-24 21:14:03,840 INFO ]: Without dead ends: 133 [2018-06-24 21:14:03,840 INFO ]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2018-06-24 21:14:03,840 INFO ]: Start minimizeSevpa. Operand 133 states. [2018-06-24 21:14:03,858 INFO ]: Finished minimizeSevpa. Reduced states from 133 to 91. [2018-06-24 21:14:03,859 INFO ]: Start removeUnreachable. Operand 91 states. [2018-06-24 21:14:03,861 INFO ]: Finished removeUnreachable. Reduced from 91 states to 91 states and 186 transitions. [2018-06-24 21:14:03,861 INFO ]: Start accepts. Automaton has 91 states and 186 transitions. Word has length 27 [2018-06-24 21:14:03,861 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:03,861 INFO ]: Abstraction has 91 states and 186 transitions. [2018-06-24 21:14:03,861 INFO ]: Interpolant automaton has 12 states. [2018-06-24 21:14:03,861 INFO ]: Start isEmpty. Operand 91 states and 186 transitions. [2018-06-24 21:14:03,864 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-24 21:14:03,864 INFO ]: Found error trace [2018-06-24 21:14:03,864 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:14:03,864 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:03,864 INFO ]: Analyzing trace with hash -1322144889, now seen corresponding path program 1 times [2018-06-24 21:14:03,864 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:03,864 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:03,865 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:03,865 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:03,865 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:03,890 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:03,944 INFO ]: Checked inductivity of 37 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-06-24 21:14:03,944 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:14:03,944 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 [2018-06-24 21:14:03,950 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:03,994 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:03,997 INFO ]: Computing forward predicates... [2018-06-24 21:14:04,122 INFO ]: Checked inductivity of 37 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-24 21:14:04,141 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:14:04,141 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9] total 11 [2018-06-24 21:14:04,141 INFO ]: Interpolant automaton has 11 states [2018-06-24 21:14:04,141 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-24 21:14:04,141 INFO ]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-06-24 21:14:04,141 INFO ]: Start difference. First operand 91 states and 186 transitions. Second operand 11 states. [2018-06-24 21:14:04,579 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:04,579 INFO ]: Finished difference Result 66 states and 106 transitions. [2018-06-24 21:14:04,580 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-24 21:14:04,580 INFO ]: Start accepts. Automaton has 11 states. Word has length 27 [2018-06-24 21:14:04,580 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:04,580 INFO ]: With dead ends: 66 [2018-06-24 21:14:04,580 INFO ]: Without dead ends: 0 [2018-06-24 21:14:04,580 INFO ]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-06-24 21:14:04,580 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:14:04,580 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:14:04,580 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:14:04,580 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:14:04,580 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-06-24 21:14:04,580 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:04,580 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:14:04,580 INFO ]: Interpolant automaton has 11 states. [2018-06-24 21:14:04,580 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:14:04,580 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:14:04,582 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:14:04,583 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:14:04 BasicIcfg [2018-06-24 21:14:04,583 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:14:04,584 INFO ]: Toolchain (without parser) took 7326.77 ms. Allocated memory was 301.5 MB in the beginning and 376.4 MB in the end (delta: 75.0 MB). Free memory was 251.9 MB in the beginning and 241.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 85.4 MB. Max. memory is 3.6 GB. [2018-06-24 21:14:04,586 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 301.5 MB. Free memory is still 266.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:14:04,586 INFO ]: ChcToBoogie took 62.90 ms. Allocated memory is still 301.5 MB. Free memory was 251.9 MB in the beginning and 248.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:14:04,586 INFO ]: Boogie Preprocessor took 41.46 ms. Allocated memory is still 301.5 MB. Free memory was 248.9 MB in the beginning and 247.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 21:14:04,587 INFO ]: RCFGBuilder took 403.97 ms. Allocated memory is still 301.5 MB. Free memory was 247.9 MB in the beginning and 234.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:14:04,588 INFO ]: BlockEncodingV2 took 358.75 ms. Allocated memory is still 301.5 MB. Free memory was 234.9 MB in the beginning and 222.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:14:04,588 INFO ]: TraceAbstraction took 6449.31 ms. Allocated memory was 301.5 MB in the beginning and 376.4 MB in the end (delta: 75.0 MB). Free memory was 221.9 MB in the beginning and 241.5 MB in the end (delta: -19.6 MB). Peak memory consumption was 55.4 MB. Max. memory is 3.6 GB. [2018-06-24 21:14:04,597 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 27 locations, 37 edges - StatisticsResult: Encoded RCFG 14 locations, 24 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 301.5 MB. Free memory is still 266.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.90 ms. Allocated memory is still 301.5 MB. Free memory was 251.9 MB in the beginning and 248.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 41.46 ms. Allocated memory is still 301.5 MB. Free memory was 248.9 MB in the beginning and 247.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 403.97 ms. Allocated memory is still 301.5 MB. Free memory was 247.9 MB in the beginning and 234.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 358.75 ms. Allocated memory is still 301.5 MB. Free memory was 234.9 MB in the beginning and 222.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 6449.31 ms. Allocated memory was 301.5 MB in the beginning and 376.4 MB in the end (delta: 75.0 MB). Free memory was 221.9 MB in the beginning and 241.5 MB in the end (delta: -19.6 MB). Peak memory consumption was 55.4 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, 14 locations, 1 error locations. SAFE Result, 6.4s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 4.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 268 SDtfs, 156 SDslu, 395 SDs, 0 SdLazy, 1321 SolverSat, 206 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=7, 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, 8 MinimizatonAttempts, 144 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 231 ConstructedInterpolants, 8 QuantifiedInterpolants, 12905 SizeOfPredicates, 40 NumberOfNonLiveVariables, 994 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 240/258 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/bsearch.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-14-04-614.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bsearch.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-14-04-614.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bsearch.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-14-04-614.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bsearch.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-14-04-614.csv Received shutdown request...