java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/file.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:32:07,657 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:32:07,659 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:32:07,676 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:32:07,676 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:32:07,677 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:32:07,678 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:32:07,680 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:32:07,682 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:32:07,682 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:32:07,684 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:32:07,685 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:32:07,685 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:32:07,687 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:32:07,687 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:32:07,690 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:32:07,692 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:32:07,701 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:32:07,702 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:32:07,703 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:32:07,704 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:32:07,710 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:32:07,710 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:32:07,710 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:32:07,711 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:32:07,712 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:32:07,715 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:32:07,715 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:32:07,716 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:32:07,716 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:32:07,717 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:32:07,717 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:32:07,722 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:32:07,723 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:32:07,723 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:32:07,724 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 11:32:07,743 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:32:07,744 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:32:07,744 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:32:07,744 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:32:07,745 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:32:07,745 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:32:07,746 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:32:07,746 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:32:07,746 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:32:07,746 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:32:07,746 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:32:07,747 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:32:07,747 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:32:07,747 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:32:07,747 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:32:07,747 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:32:07,747 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:32:07,748 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:32:07,748 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:32:07,750 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:32:07,750 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:32:07,797 INFO ]: Repository-Root is: /tmp [2018-06-22 11:32:07,811 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:32:07,816 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:32:07,818 INFO ]: Initializing SmtParser... [2018-06-22 11:32:07,818 INFO ]: SmtParser initialized [2018-06-22 11:32:07,819 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/file.smt2 [2018-06-22 11:32:07,820 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 11:32:07,912 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/file.smt2 unknown [2018-06-22 11:32:08,228 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/file.smt2 [2018-06-22 11:32:08,232 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:32:08,240 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:32:08,241 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:32:08,241 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:32:08,241 INFO ]: ChcToBoogie initialized [2018-06-22 11:32:08,245 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:32:08" (1/1) ... [2018-06-22 11:32:08,292 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:32:08 Unit [2018-06-22 11:32:08,292 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:32:08,293 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:32:08,293 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:32:08,293 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:32:08,315 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:32:08" (1/1) ... [2018-06-22 11:32:08,315 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:32:08" (1/1) ... [2018-06-22 11:32:08,324 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:32:08" (1/1) ... [2018-06-22 11:32:08,324 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:32:08" (1/1) ... [2018-06-22 11:32:08,332 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:32:08" (1/1) ... [2018-06-22 11:32:08,335 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:32:08" (1/1) ... [2018-06-22 11:32:08,336 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:32:08" (1/1) ... [2018-06-22 11:32:08,339 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:32:08,339 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:32:08,339 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:32:08,339 INFO ]: RCFGBuilder initialized [2018-06-22 11:32:08,340 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:32:08" (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 11:32:08,360 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:32:08,360 INFO ]: Found specification of procedure False [2018-06-22 11:32:08,360 INFO ]: Found implementation of procedure False [2018-06-22 11:32:08,360 INFO ]: Specification and implementation of procedure readitDLRunknownCLN21 given in one single declaration [2018-06-22 11:32:08,360 INFO ]: Found specification of procedure readitDLRunknownCLN21 [2018-06-22 11:32:08,360 INFO ]: Found implementation of procedure readitDLRunknownCLN21 [2018-06-22 11:32:08,360 INFO ]: Specification and implementation of procedure read_DLRunknownCLN19 given in one single declaration [2018-06-22 11:32:08,360 INFO ]: Found specification of procedure read_DLRunknownCLN19 [2018-06-22 11:32:08,360 INFO ]: Found implementation of procedure read_DLRunknownCLN19 [2018-06-22 11:32:08,360 INFO ]: Specification and implementation of procedure read_DLRunknownCLN20 given in one single declaration [2018-06-22 11:32:08,360 INFO ]: Found specification of procedure read_DLRunknownCLN20 [2018-06-22 11:32:08,360 INFO ]: Found implementation of procedure read_DLRunknownCLN20 [2018-06-22 11:32:08,361 INFO ]: Specification and implementation of procedure readitDLRunknownCLN22 given in one single declaration [2018-06-22 11:32:08,361 INFO ]: Found specification of procedure readitDLRunknownCLN22 [2018-06-22 11:32:08,361 INFO ]: Found implementation of procedure readitDLRunknownCLN22 [2018-06-22 11:32:08,361 INFO ]: Specification and implementation of procedure fDLRunknownCLN8 given in one single declaration [2018-06-22 11:32:08,361 INFO ]: Found specification of procedure fDLRunknownCLN8 [2018-06-22 11:32:08,361 INFO ]: Found implementation of procedure fDLRunknownCLN8 [2018-06-22 11:32:08,361 INFO ]: Specification and implementation of procedure nextDLRunknownCLN17 given in one single declaration [2018-06-22 11:32:08,361 INFO ]: Found specification of procedure nextDLRunknownCLN17 [2018-06-22 11:32:08,361 INFO ]: Found implementation of procedure nextDLRunknownCLN17 [2018-06-22 11:32:08,361 INFO ]: Specification and implementation of procedure gDLRunknownCLN12 given in one single declaration [2018-06-22 11:32:08,361 INFO ]: Found specification of procedure gDLRunknownCLN12 [2018-06-22 11:32:08,361 INFO ]: Found implementation of procedure gDLRunknownCLN12 [2018-06-22 11:32:08,361 INFO ]: Specification and implementation of procedure close_DLRunknownCLN3 given in one single declaration [2018-06-22 11:32:08,361 INFO ]: Found specification of procedure close_DLRunknownCLN3 [2018-06-22 11:32:08,361 INFO ]: Found implementation of procedure close_DLRunknownCLN3 [2018-06-22 11:32:08,361 INFO ]: Specification and implementation of procedure closeitDLRunknownCLN5 given in one single declaration [2018-06-22 11:32:08,361 INFO ]: Found specification of procedure closeitDLRunknownCLN5 [2018-06-22 11:32:08,361 INFO ]: Found implementation of procedure closeitDLRunknownCLN5 [2018-06-22 11:32:08,361 INFO ]: Specification and implementation of procedure loopDLRunknownCLN15 given in one single declaration [2018-06-22 11:32:08,361 INFO ]: Found specification of procedure loopDLRunknownCLN15 [2018-06-22 11:32:08,361 INFO ]: Found implementation of procedure loopDLRunknownCLN15 [2018-06-22 11:32:08,361 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:32:08,361 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:32:08,361 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 11:32:08,868 INFO ]: Using library mode [2018-06-22 11:32:08,869 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:32:08 BoogieIcfgContainer [2018-06-22 11:32:08,869 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:32:08,870 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:32:08,870 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:32:08,878 INFO ]: TraceAbstraction initialized [2018-06-22 11:32:08,878 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:32:08" (1/3) ... [2018-06-22 11:32:08,879 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a5a749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:32:08, skipping insertion in model container [2018-06-22 11:32:08,881 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:32:08" (2/3) ... [2018-06-22 11:32:08,881 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a5a749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:32:08, skipping insertion in model container [2018-06-22 11:32:08,881 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:32:08" (3/3) ... [2018-06-22 11:32:08,883 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:32:08,893 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:32:08,903 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:32:08,950 INFO ]: Using default assertion order modulation [2018-06-22 11:32:08,951 INFO ]: Interprodecural is true [2018-06-22 11:32:08,951 INFO ]: Hoare is false [2018-06-22 11:32:08,951 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:32:08,951 INFO ]: Backedges is TWOTRACK [2018-06-22 11:32:08,951 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:32:08,951 INFO ]: Difference is false [2018-06-22 11:32:08,951 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:32:08,951 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:32:08,975 INFO ]: Start isEmpty. Operand 63 states. [2018-06-22 11:32:08,995 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:32:08,995 INFO ]: Found error trace [2018-06-22 11:32:08,996 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:32:08,996 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:09,001 INFO ]: Analyzing trace with hash 213576924, now seen corresponding path program 1 times [2018-06-22 11:32:09,003 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:09,003 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:09,043 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:09,043 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:09,043 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:09,063 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:09,090 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:32:09,093 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:32:09,093 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:32:09,094 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:32:09,109 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:32:09,110 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:32:09,112 INFO ]: Start difference. First operand 63 states. Second operand 2 states. [2018-06-22 11:32:09,141 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:09,141 INFO ]: Finished difference Result 59 states and 82 transitions. [2018-06-22 11:32:09,141 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:32:09,142 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:32:09,142 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:09,161 INFO ]: With dead ends: 59 [2018-06-22 11:32:09,161 INFO ]: Without dead ends: 56 [2018-06-22 11:32:09,163 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:32:09,184 INFO ]: Start minimizeSevpa. Operand 56 states. [2018-06-22 11:32:09,208 INFO ]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-06-22 11:32:09,210 INFO ]: Start removeUnreachable. Operand 56 states. [2018-06-22 11:32:09,212 INFO ]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2018-06-22 11:32:09,213 INFO ]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 5 [2018-06-22 11:32:09,213 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:09,213 INFO ]: Abstraction has 56 states and 78 transitions. [2018-06-22 11:32:09,213 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:32:09,213 INFO ]: Start isEmpty. Operand 56 states and 78 transitions. [2018-06-22 11:32:09,216 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:32:09,216 INFO ]: Found error trace [2018-06-22 11:32:09,216 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:09,216 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:09,216 INFO ]: Analyzing trace with hash 32003250, now seen corresponding path program 1 times [2018-06-22 11:32:09,216 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:09,216 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:09,217 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:09,217 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:09,217 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:09,266 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:09,433 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:32:09,433 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:32:09,433 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 11:32:09,434 INFO ]: Interpolant automaton has 5 states [2018-06-22 11:32:09,435 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 11:32:09,435 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:32:09,435 INFO ]: Start difference. First operand 56 states and 78 transitions. Second operand 5 states. [2018-06-22 11:32:09,733 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:09,733 INFO ]: Finished difference Result 64 states and 97 transitions. [2018-06-22 11:32:09,734 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:32:09,734 INFO ]: Start accepts. Automaton has 5 states. Word has length 29 [2018-06-22 11:32:09,734 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:09,736 INFO ]: With dead ends: 64 [2018-06-22 11:32:09,736 INFO ]: Without dead ends: 64 [2018-06-22 11:32:09,737 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:32:09,738 INFO ]: Start minimizeSevpa. Operand 64 states. [2018-06-22 11:32:09,753 INFO ]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-06-22 11:32:09,753 INFO ]: Start removeUnreachable. Operand 64 states. [2018-06-22 11:32:09,754 INFO ]: Finished removeUnreachable. Reduced from 64 states to 64 states and 97 transitions. [2018-06-22 11:32:09,754 INFO ]: Start accepts. Automaton has 64 states and 97 transitions. Word has length 29 [2018-06-22 11:32:09,755 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:09,755 INFO ]: Abstraction has 64 states and 97 transitions. [2018-06-22 11:32:09,755 INFO ]: Interpolant automaton has 5 states. [2018-06-22 11:32:09,755 INFO ]: Start isEmpty. Operand 64 states and 97 transitions. [2018-06-22 11:32:09,757 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 11:32:09,757 INFO ]: Found error trace [2018-06-22 11:32:09,757 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:09,758 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:09,758 INFO ]: Analyzing trace with hash 276465907, now seen corresponding path program 1 times [2018-06-22 11:32:09,758 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:09,758 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:09,759 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:09,759 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:09,759 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:09,777 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:09,927 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:32:09,927 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:32:09,927 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 11:32:09,928 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:32:09,928 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:32:09,928 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:32:09,928 INFO ]: Start difference. First operand 64 states and 97 transitions. Second operand 7 states. [2018-06-22 11:32:10,255 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:10,255 INFO ]: Finished difference Result 70 states and 109 transitions. [2018-06-22 11:32:10,256 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:32:10,256 INFO ]: Start accepts. Automaton has 7 states. Word has length 33 [2018-06-22 11:32:10,256 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:10,258 INFO ]: With dead ends: 70 [2018-06-22 11:32:10,258 INFO ]: Without dead ends: 70 [2018-06-22 11:32:10,258 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:32:10,259 INFO ]: Start minimizeSevpa. Operand 70 states. [2018-06-22 11:32:10,274 INFO ]: Finished minimizeSevpa. Reduced states from 70 to 68. [2018-06-22 11:32:10,274 INFO ]: Start removeUnreachable. Operand 68 states. [2018-06-22 11:32:10,276 INFO ]: Finished removeUnreachable. Reduced from 68 states to 68 states and 105 transitions. [2018-06-22 11:32:10,276 INFO ]: Start accepts. Automaton has 68 states and 105 transitions. Word has length 33 [2018-06-22 11:32:10,276 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:10,276 INFO ]: Abstraction has 68 states and 105 transitions. [2018-06-22 11:32:10,276 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:32:10,277 INFO ]: Start isEmpty. Operand 68 states and 105 transitions. [2018-06-22 11:32:10,280 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 11:32:10,280 INFO ]: Found error trace [2018-06-22 11:32:10,280 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:10,280 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:10,281 INFO ]: Analyzing trace with hash 18300469, now seen corresponding path program 1 times [2018-06-22 11:32:10,281 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:10,281 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:10,281 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:10,281 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:10,281 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:10,296 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:10,493 INFO ]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:32:10,494 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:32:10,494 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 11:32:10,494 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:32:10,494 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:32:10,494 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:32:10,494 INFO ]: Start difference. First operand 68 states and 105 transitions. Second operand 7 states. [2018-06-22 11:32:10,904 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:10,904 INFO ]: Finished difference Result 76 states and 121 transitions. [2018-06-22 11:32:10,904 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:32:10,904 INFO ]: Start accepts. Automaton has 7 states. Word has length 33 [2018-06-22 11:32:10,904 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:10,906 INFO ]: With dead ends: 76 [2018-06-22 11:32:10,906 INFO ]: Without dead ends: 76 [2018-06-22 11:32:10,906 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:32:10,907 INFO ]: Start minimizeSevpa. Operand 76 states. [2018-06-22 11:32:10,918 INFO ]: Finished minimizeSevpa. Reduced states from 76 to 74. [2018-06-22 11:32:10,918 INFO ]: Start removeUnreachable. Operand 74 states. [2018-06-22 11:32:10,922 INFO ]: Finished removeUnreachable. Reduced from 74 states to 74 states and 118 transitions. [2018-06-22 11:32:10,922 INFO ]: Start accepts. Automaton has 74 states and 118 transitions. Word has length 33 [2018-06-22 11:32:10,922 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:10,922 INFO ]: Abstraction has 74 states and 118 transitions. [2018-06-22 11:32:10,922 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:32:10,922 INFO ]: Start isEmpty. Operand 74 states and 118 transitions. [2018-06-22 11:32:10,924 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 11:32:10,924 INFO ]: Found error trace [2018-06-22 11:32:10,924 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:10,924 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:10,925 INFO ]: Analyzing trace with hash 1695160867, now seen corresponding path program 1 times [2018-06-22 11:32:10,925 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:10,925 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:10,925 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:10,925 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:10,925 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:10,939 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:11,009 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:32:11,009 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:11,009 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 11:32:11,023 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:32:11,063 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:11,072 INFO ]: Computing forward predicates... [2018-06-22 11:32:11,405 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:32:11,438 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:32:11,438 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 11:32:11,438 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:32:11,438 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:32:11,438 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:32:11,438 INFO ]: Start difference. First operand 74 states and 118 transitions. Second operand 8 states. [2018-06-22 11:32:11,610 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:11,610 INFO ]: Finished difference Result 86 states and 147 transitions. [2018-06-22 11:32:11,611 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:32:11,611 INFO ]: Start accepts. Automaton has 8 states. Word has length 37 [2018-06-22 11:32:11,611 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:11,613 INFO ]: With dead ends: 86 [2018-06-22 11:32:11,613 INFO ]: Without dead ends: 86 [2018-06-22 11:32:11,613 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:32:11,613 INFO ]: Start minimizeSevpa. Operand 86 states. [2018-06-22 11:32:11,632 INFO ]: Finished minimizeSevpa. Reduced states from 86 to 80. [2018-06-22 11:32:11,632 INFO ]: Start removeUnreachable. Operand 80 states. [2018-06-22 11:32:11,634 INFO ]: Finished removeUnreachable. Reduced from 80 states to 80 states and 136 transitions. [2018-06-22 11:32:11,634 INFO ]: Start accepts. Automaton has 80 states and 136 transitions. Word has length 37 [2018-06-22 11:32:11,634 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:11,634 INFO ]: Abstraction has 80 states and 136 transitions. [2018-06-22 11:32:11,634 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:32:11,634 INFO ]: Start isEmpty. Operand 80 states and 136 transitions. [2018-06-22 11:32:11,636 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 11:32:11,636 INFO ]: Found error trace [2018-06-22 11:32:11,636 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:11,636 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:11,636 INFO ]: Analyzing trace with hash 821835748, now seen corresponding path program 1 times [2018-06-22 11:32:11,637 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:11,637 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:11,637 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:11,637 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:11,637 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:11,650 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:11,720 INFO ]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 11:32:11,720 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:11,720 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 11:32:11,738 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:11,770 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:11,773 INFO ]: Computing forward predicates... [2018-06-22 11:32:11,861 INFO ]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 11:32:11,881 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:32:11,881 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2018-06-22 11:32:11,881 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:32:11,881 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:32:11,881 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:32:11,882 INFO ]: Start difference. First operand 80 states and 136 transitions. Second operand 12 states. [2018-06-22 11:32:12,510 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:12,510 INFO ]: Finished difference Result 105 states and 188 transitions. [2018-06-22 11:32:12,511 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:32:12,511 INFO ]: Start accepts. Automaton has 12 states. Word has length 41 [2018-06-22 11:32:12,511 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:12,513 INFO ]: With dead ends: 105 [2018-06-22 11:32:12,513 INFO ]: Without dead ends: 105 [2018-06-22 11:32:12,514 INFO ]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:32:12,514 INFO ]: Start minimizeSevpa. Operand 105 states. [2018-06-22 11:32:12,535 INFO ]: Finished minimizeSevpa. Reduced states from 105 to 91. [2018-06-22 11:32:12,535 INFO ]: Start removeUnreachable. Operand 91 states. [2018-06-22 11:32:12,537 INFO ]: Finished removeUnreachable. Reduced from 91 states to 91 states and 165 transitions. [2018-06-22 11:32:12,537 INFO ]: Start accepts. Automaton has 91 states and 165 transitions. Word has length 41 [2018-06-22 11:32:12,538 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:12,538 INFO ]: Abstraction has 91 states and 165 transitions. [2018-06-22 11:32:12,538 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:32:12,538 INFO ]: Start isEmpty. Operand 91 states and 165 transitions. [2018-06-22 11:32:12,540 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 11:32:12,540 INFO ]: Found error trace [2018-06-22 11:32:12,540 INFO ]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:12,540 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:12,540 INFO ]: Analyzing trace with hash 1708890596, now seen corresponding path program 1 times [2018-06-22 11:32:12,540 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:12,540 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:12,541 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:12,541 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:12,541 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:12,553 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:12,675 INFO ]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 11:32:12,675 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:12,675 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 11:32:12,688 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:12,721 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:12,725 INFO ]: Computing forward predicates... [2018-06-22 11:32:12,938 INFO ]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 11:32:12,957 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:32:12,957 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 11:32:12,958 INFO ]: Interpolant automaton has 13 states [2018-06-22 11:32:12,958 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 11:32:12,958 INFO ]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:32:12,958 INFO ]: Start difference. First operand 91 states and 165 transitions. Second operand 13 states. [2018-06-22 11:32:13,143 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:13,143 INFO ]: Finished difference Result 100 states and 192 transitions. [2018-06-22 11:32:13,144 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:32:13,144 INFO ]: Start accepts. Automaton has 13 states. Word has length 41 [2018-06-22 11:32:13,145 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:13,146 INFO ]: With dead ends: 100 [2018-06-22 11:32:13,146 INFO ]: Without dead ends: 100 [2018-06-22 11:32:13,146 INFO ]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:32:13,147 INFO ]: Start minimizeSevpa. Operand 100 states. [2018-06-22 11:32:13,161 INFO ]: Finished minimizeSevpa. Reduced states from 100 to 93. [2018-06-22 11:32:13,161 INFO ]: Start removeUnreachable. Operand 93 states. [2018-06-22 11:32:13,164 INFO ]: Finished removeUnreachable. Reduced from 93 states to 93 states and 169 transitions. [2018-06-22 11:32:13,165 INFO ]: Start accepts. Automaton has 93 states and 169 transitions. Word has length 41 [2018-06-22 11:32:13,165 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:13,165 INFO ]: Abstraction has 93 states and 169 transitions. [2018-06-22 11:32:13,165 INFO ]: Interpolant automaton has 13 states. [2018-06-22 11:32:13,165 INFO ]: Start isEmpty. Operand 93 states and 169 transitions. [2018-06-22 11:32:13,167 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 11:32:13,167 INFO ]: Found error trace [2018-06-22 11:32:13,167 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:13,167 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:13,167 INFO ]: Analyzing trace with hash 1983650210, now seen corresponding path program 1 times [2018-06-22 11:32:13,167 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:13,167 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:13,168 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:13,168 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:13,168 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:13,179 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:13,237 INFO ]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:32:13,237 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:32:13,237 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 11:32:13,238 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:32:13,238 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:32:13,238 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:32:13,238 INFO ]: Start difference. First operand 93 states and 169 transitions. Second operand 7 states. [2018-06-22 11:32:13,466 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:13,467 INFO ]: Finished difference Result 104 states and 190 transitions. [2018-06-22 11:32:13,467 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:32:13,467 INFO ]: Start accepts. Automaton has 7 states. Word has length 41 [2018-06-22 11:32:13,467 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:13,468 INFO ]: With dead ends: 104 [2018-06-22 11:32:13,468 INFO ]: Without dead ends: 104 [2018-06-22 11:32:13,468 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:32:13,468 INFO ]: Start minimizeSevpa. Operand 104 states. [2018-06-22 11:32:13,478 INFO ]: Finished minimizeSevpa. Reduced states from 104 to 94. [2018-06-22 11:32:13,478 INFO ]: Start removeUnreachable. Operand 94 states. [2018-06-22 11:32:13,480 INFO ]: Finished removeUnreachable. Reduced from 94 states to 94 states and 173 transitions. [2018-06-22 11:32:13,480 INFO ]: Start accepts. Automaton has 94 states and 173 transitions. Word has length 41 [2018-06-22 11:32:13,480 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:13,480 INFO ]: Abstraction has 94 states and 173 transitions. [2018-06-22 11:32:13,480 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:32:13,480 INFO ]: Start isEmpty. Operand 94 states and 173 transitions. [2018-06-22 11:32:13,483 INFO ]: Finished isEmpty. Found accepting run of length 66 [2018-06-22 11:32:13,483 INFO ]: Found error trace [2018-06-22 11:32:13,483 INFO ]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:13,483 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:13,483 INFO ]: Analyzing trace with hash 348976679, now seen corresponding path program 1 times [2018-06-22 11:32:13,483 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:13,483 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:13,484 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:13,484 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:13,484 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:13,493 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:13,536 INFO ]: Checked inductivity of 40 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 11:32:13,536 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:13,536 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 11:32:13,544 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:13,585 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:13,589 INFO ]: Computing forward predicates... [2018-06-22 11:32:13,655 INFO ]: Checked inductivity of 40 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:32:13,682 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:32:13,682 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-06-22 11:32:13,682 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:32:13,682 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:32:13,682 INFO ]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:32:13,682 INFO ]: Start difference. First operand 94 states and 173 transitions. Second operand 10 states. [2018-06-22 11:32:13,752 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:13,752 INFO ]: Finished difference Result 102 states and 192 transitions. [2018-06-22 11:32:13,753 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:32:13,753 INFO ]: Start accepts. Automaton has 10 states. Word has length 65 [2018-06-22 11:32:13,753 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:13,755 INFO ]: With dead ends: 102 [2018-06-22 11:32:13,755 INFO ]: Without dead ends: 102 [2018-06-22 11:32:13,755 INFO ]: 0 DeclaredPredicates, 70 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:32:13,755 INFO ]: Start minimizeSevpa. Operand 102 states. [2018-06-22 11:32:13,765 INFO ]: Finished minimizeSevpa. Reduced states from 102 to 96. [2018-06-22 11:32:13,766 INFO ]: Start removeUnreachable. Operand 96 states. [2018-06-22 11:32:13,768 INFO ]: Finished removeUnreachable. Reduced from 96 states to 96 states and 181 transitions. [2018-06-22 11:32:13,768 INFO ]: Start accepts. Automaton has 96 states and 181 transitions. Word has length 65 [2018-06-22 11:32:13,768 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:13,768 INFO ]: Abstraction has 96 states and 181 transitions. [2018-06-22 11:32:13,768 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:32:13,768 INFO ]: Start isEmpty. Operand 96 states and 181 transitions. [2018-06-22 11:32:13,770 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 11:32:13,770 INFO ]: Found error trace [2018-06-22 11:32:13,770 INFO ]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:13,770 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:13,771 INFO ]: Analyzing trace with hash 1739507558, now seen corresponding path program 1 times [2018-06-22 11:32:13,771 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:13,771 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:13,771 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:13,771 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:13,771 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:13,781 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:13,887 INFO ]: Checked inductivity of 32 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-06-22 11:32:13,888 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:13,888 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 11:32:13,893 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:13,935 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:13,939 INFO ]: Computing forward predicates... [2018-06-22 11:32:14,097 INFO ]: Checked inductivity of 32 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-06-22 11:32:14,116 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:32:14,116 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2018-06-22 11:32:14,117 INFO ]: Interpolant automaton has 13 states [2018-06-22 11:32:14,117 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 11:32:14,117 INFO ]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:32:14,117 INFO ]: Start difference. First operand 96 states and 181 transitions. Second operand 13 states. [2018-06-22 11:32:14,520 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:14,520 INFO ]: Finished difference Result 111 states and 202 transitions. [2018-06-22 11:32:14,520 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 11:32:14,520 INFO ]: Start accepts. Automaton has 13 states. Word has length 61 [2018-06-22 11:32:14,521 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:14,522 INFO ]: With dead ends: 111 [2018-06-22 11:32:14,522 INFO ]: Without dead ends: 111 [2018-06-22 11:32:14,522 INFO ]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:32:14,522 INFO ]: Start minimizeSevpa. Operand 111 states. [2018-06-22 11:32:14,531 INFO ]: Finished minimizeSevpa. Reduced states from 111 to 102. [2018-06-22 11:32:14,531 INFO ]: Start removeUnreachable. Operand 102 states. [2018-06-22 11:32:14,533 INFO ]: Finished removeUnreachable. Reduced from 102 states to 102 states and 188 transitions. [2018-06-22 11:32:14,533 INFO ]: Start accepts. Automaton has 102 states and 188 transitions. Word has length 61 [2018-06-22 11:32:14,534 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:14,534 INFO ]: Abstraction has 102 states and 188 transitions. [2018-06-22 11:32:14,534 INFO ]: Interpolant automaton has 13 states. [2018-06-22 11:32:14,534 INFO ]: Start isEmpty. Operand 102 states and 188 transitions. [2018-06-22 11:32:14,536 INFO ]: Finished isEmpty. Found accepting run of length 66 [2018-06-22 11:32:14,536 INFO ]: Found error trace [2018-06-22 11:32:14,536 INFO ]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:14,536 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:14,536 INFO ]: Analyzing trace with hash -1612315997, now seen corresponding path program 1 times [2018-06-22 11:32:14,536 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:14,536 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:14,537 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:14,537 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:14,537 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:14,545 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:14,691 INFO ]: Checked inductivity of 40 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 11:32:14,691 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:14,691 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 11:32:14,696 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:14,736 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:14,740 INFO ]: Computing forward predicates... [2018-06-22 11:32:14,901 INFO ]: Checked inductivity of 40 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-06-22 11:32:14,924 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:32:14,924 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 15 [2018-06-22 11:32:14,924 INFO ]: Interpolant automaton has 15 states [2018-06-22 11:32:14,925 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 11:32:14,925 INFO ]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:32:14,925 INFO ]: Start difference. First operand 102 states and 188 transitions. Second operand 15 states. [2018-06-22 11:32:15,700 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:15,701 INFO ]: Finished difference Result 126 states and 239 transitions. [2018-06-22 11:32:15,701 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 11:32:15,701 INFO ]: Start accepts. Automaton has 15 states. Word has length 65 [2018-06-22 11:32:15,701 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:15,704 INFO ]: With dead ends: 126 [2018-06-22 11:32:15,704 INFO ]: Without dead ends: 126 [2018-06-22 11:32:15,704 INFO ]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:32:15,704 INFO ]: Start minimizeSevpa. Operand 126 states. [2018-06-22 11:32:15,724 INFO ]: Finished minimizeSevpa. Reduced states from 126 to 105. [2018-06-22 11:32:15,724 INFO ]: Start removeUnreachable. Operand 105 states. [2018-06-22 11:32:15,726 INFO ]: Finished removeUnreachable. Reduced from 105 states to 105 states and 196 transitions. [2018-06-22 11:32:15,726 INFO ]: Start accepts. Automaton has 105 states and 196 transitions. Word has length 65 [2018-06-22 11:32:15,726 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:15,726 INFO ]: Abstraction has 105 states and 196 transitions. [2018-06-22 11:32:15,726 INFO ]: Interpolant automaton has 15 states. [2018-06-22 11:32:15,726 INFO ]: Start isEmpty. Operand 105 states and 196 transitions. [2018-06-22 11:32:15,729 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 11:32:15,729 INFO ]: Found error trace [2018-06-22 11:32:15,729 INFO ]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:32:15,729 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:15,729 INFO ]: Analyzing trace with hash 944514901, now seen corresponding path program 1 times [2018-06-22 11:32:15,729 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:15,729 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:15,730 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:15,730 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:15,730 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:15,749 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:15,862 INFO ]: Checked inductivity of 27 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-06-22 11:32:15,862 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:15,862 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:32:15,868 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:15,891 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:15,894 INFO ]: Computing forward predicates... [2018-06-22 11:32:15,982 INFO ]: Checked inductivity of 27 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 11:32:16,001 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:32:16,001 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-06-22 11:32:16,001 INFO ]: Interpolant automaton has 16 states [2018-06-22 11:32:16,001 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 11:32:16,001 INFO ]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:32:16,002 INFO ]: Start difference. First operand 105 states and 196 transitions. Second operand 16 states. [2018-06-22 11:32:16,485 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:16,485 INFO ]: Finished difference Result 142 states and 293 transitions. [2018-06-22 11:32:16,491 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-22 11:32:16,491 INFO ]: Start accepts. Automaton has 16 states. Word has length 61 [2018-06-22 11:32:16,491 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:16,493 INFO ]: With dead ends: 142 [2018-06-22 11:32:16,493 INFO ]: Without dead ends: 142 [2018-06-22 11:32:16,494 INFO ]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:32:16,494 INFO ]: Start minimizeSevpa. Operand 142 states. [2018-06-22 11:32:16,508 INFO ]: Finished minimizeSevpa. Reduced states from 142 to 122. [2018-06-22 11:32:16,508 INFO ]: Start removeUnreachable. Operand 122 states. [2018-06-22 11:32:16,510 INFO ]: Finished removeUnreachable. Reduced from 122 states to 122 states and 245 transitions. [2018-06-22 11:32:16,510 INFO ]: Start accepts. Automaton has 122 states and 245 transitions. Word has length 61 [2018-06-22 11:32:16,510 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:16,510 INFO ]: Abstraction has 122 states and 245 transitions. [2018-06-22 11:32:16,510 INFO ]: Interpolant automaton has 16 states. [2018-06-22 11:32:16,510 INFO ]: Start isEmpty. Operand 122 states and 245 transitions. [2018-06-22 11:32:16,513 INFO ]: Finished isEmpty. Found accepting run of length 70 [2018-06-22 11:32:16,513 INFO ]: Found error trace [2018-06-22 11:32:16,513 INFO ]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:16,513 INFO ]: === Iteration 13 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:16,513 INFO ]: Analyzing trace with hash -129769071, now seen corresponding path program 1 times [2018-06-22 11:32:16,513 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:16,513 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:16,514 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:16,514 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:16,514 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:16,524 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:16,613 INFO ]: Checked inductivity of 39 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-06-22 11:32:16,613 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:16,613 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:32:16,622 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:16,661 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:16,665 INFO ]: Computing forward predicates... [2018-06-22 11:32:16,833 INFO ]: Checked inductivity of 39 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-06-22 11:32:16,852 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:32:16,852 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2018-06-22 11:32:16,852 INFO ]: Interpolant automaton has 13 states [2018-06-22 11:32:16,853 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 11:32:16,853 INFO ]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:32:16,853 INFO ]: Start difference. First operand 122 states and 245 transitions. Second operand 13 states. [2018-06-22 11:32:17,046 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:17,047 INFO ]: Finished difference Result 142 states and 282 transitions. [2018-06-22 11:32:17,050 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 11:32:17,050 INFO ]: Start accepts. Automaton has 13 states. Word has length 69 [2018-06-22 11:32:17,050 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:17,052 INFO ]: With dead ends: 142 [2018-06-22 11:32:17,052 INFO ]: Without dead ends: 142 [2018-06-22 11:32:17,052 INFO ]: 0 DeclaredPredicates, 80 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:32:17,052 INFO ]: Start minimizeSevpa. Operand 142 states. [2018-06-22 11:32:17,071 INFO ]: Finished minimizeSevpa. Reduced states from 142 to 126. [2018-06-22 11:32:17,071 INFO ]: Start removeUnreachable. Operand 126 states. [2018-06-22 11:32:17,072 INFO ]: Finished removeUnreachable. Reduced from 126 states to 126 states and 251 transitions. [2018-06-22 11:32:17,072 INFO ]: Start accepts. Automaton has 126 states and 251 transitions. Word has length 69 [2018-06-22 11:32:17,073 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:17,073 INFO ]: Abstraction has 126 states and 251 transitions. [2018-06-22 11:32:17,073 INFO ]: Interpolant automaton has 13 states. [2018-06-22 11:32:17,073 INFO ]: Start isEmpty. Operand 126 states and 251 transitions. [2018-06-22 11:32:17,076 INFO ]: Finished isEmpty. Found accepting run of length 70 [2018-06-22 11:32:17,076 INFO ]: Found error trace [2018-06-22 11:32:17,077 INFO ]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:17,077 INFO ]: === Iteration 14 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:17,077 INFO ]: Analyzing trace with hash -1352676220, now seen corresponding path program 1 times [2018-06-22 11:32:17,077 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:17,077 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:17,077 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:17,077 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:17,077 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:17,085 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:17,143 INFO ]: Checked inductivity of 36 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-06-22 11:32:17,143 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:17,143 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:32:17,148 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:17,171 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:17,173 INFO ]: Computing forward predicates... [2018-06-22 11:32:17,180 INFO ]: Checked inductivity of 36 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:32:17,209 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:32:17,210 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2018-06-22 11:32:17,210 INFO ]: Interpolant automaton has 5 states [2018-06-22 11:32:17,210 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 11:32:17,210 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:32:17,210 INFO ]: Start difference. First operand 126 states and 251 transitions. Second operand 5 states. [2018-06-22 11:32:17,404 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:17,404 INFO ]: Finished difference Result 124 states and 244 transitions. [2018-06-22 11:32:17,404 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:32:17,404 INFO ]: Start accepts. Automaton has 5 states. Word has length 69 [2018-06-22 11:32:17,405 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:17,406 INFO ]: With dead ends: 124 [2018-06-22 11:32:17,406 INFO ]: Without dead ends: 124 [2018-06-22 11:32:17,406 INFO ]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:32:17,406 INFO ]: Start minimizeSevpa. Operand 124 states. [2018-06-22 11:32:17,416 INFO ]: Finished minimizeSevpa. Reduced states from 124 to 123. [2018-06-22 11:32:17,416 INFO ]: Start removeUnreachable. Operand 123 states. [2018-06-22 11:32:17,417 INFO ]: Finished removeUnreachable. Reduced from 123 states to 123 states and 240 transitions. [2018-06-22 11:32:17,418 INFO ]: Start accepts. Automaton has 123 states and 240 transitions. Word has length 69 [2018-06-22 11:32:17,418 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:17,418 INFO ]: Abstraction has 123 states and 240 transitions. [2018-06-22 11:32:17,418 INFO ]: Interpolant automaton has 5 states. [2018-06-22 11:32:17,418 INFO ]: Start isEmpty. Operand 123 states and 240 transitions. [2018-06-22 11:32:17,420 INFO ]: Finished isEmpty. Found accepting run of length 70 [2018-06-22 11:32:17,420 INFO ]: Found error trace [2018-06-22 11:32:17,420 INFO ]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:17,420 INFO ]: === Iteration 15 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:17,420 INFO ]: Analyzing trace with hash -55229440, now seen corresponding path program 1 times [2018-06-22 11:32:17,420 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:17,420 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:17,422 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:17,422 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:17,422 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:17,433 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:17,536 INFO ]: Checked inductivity of 36 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-06-22 11:32:17,536 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:17,536 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:32:17,542 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:17,564 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:17,567 INFO ]: Computing forward predicates... [2018-06-22 11:32:17,648 INFO ]: Checked inductivity of 36 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-06-22 11:32:17,668 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:32:17,668 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-06-22 11:32:17,668 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:32:17,669 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:32:17,669 INFO ]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:32:17,669 INFO ]: Start difference. First operand 123 states and 240 transitions. Second operand 11 states. [2018-06-22 11:32:18,348 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:18,348 INFO ]: Finished difference Result 157 states and 332 transitions. [2018-06-22 11:32:18,348 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:32:18,348 INFO ]: Start accepts. Automaton has 11 states. Word has length 69 [2018-06-22 11:32:18,349 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:18,351 INFO ]: With dead ends: 157 [2018-06-22 11:32:18,351 INFO ]: Without dead ends: 157 [2018-06-22 11:32:18,351 INFO ]: 0 DeclaredPredicates, 81 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:32:18,351 INFO ]: Start minimizeSevpa. Operand 157 states. [2018-06-22 11:32:18,371 INFO ]: Finished minimizeSevpa. Reduced states from 157 to 134. [2018-06-22 11:32:18,371 INFO ]: Start removeUnreachable. Operand 134 states. [2018-06-22 11:32:18,373 INFO ]: Finished removeUnreachable. Reduced from 134 states to 134 states and 270 transitions. [2018-06-22 11:32:18,373 INFO ]: Start accepts. Automaton has 134 states and 270 transitions. Word has length 69 [2018-06-22 11:32:18,373 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:18,373 INFO ]: Abstraction has 134 states and 270 transitions. [2018-06-22 11:32:18,373 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:32:18,373 INFO ]: Start isEmpty. Operand 134 states and 270 transitions. [2018-06-22 11:32:18,376 INFO ]: Finished isEmpty. Found accepting run of length 70 [2018-06-22 11:32:18,376 INFO ]: Found error trace [2018-06-22 11:32:18,376 INFO ]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:18,376 INFO ]: === Iteration 16 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:18,376 INFO ]: Analyzing trace with hash -329989054, now seen corresponding path program 1 times [2018-06-22 11:32:18,376 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:18,377 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:18,377 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:18,377 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:18,377 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:18,388 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:19,428 INFO ]: Checked inductivity of 36 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-22 11:32:19,428 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:19,428 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:32:19,435 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:19,463 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:19,467 INFO ]: Computing forward predicates... [2018-06-22 11:32:19,506 INFO ]: Checked inductivity of 36 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-06-22 11:32:19,525 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:32:19,525 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 13 [2018-06-22 11:32:19,525 INFO ]: Interpolant automaton has 13 states [2018-06-22 11:32:19,525 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 11:32:19,525 INFO ]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:32:19,526 INFO ]: Start difference. First operand 134 states and 270 transitions. Second operand 13 states. [2018-06-22 11:32:19,895 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:19,896 INFO ]: Finished difference Result 188 states and 389 transitions. [2018-06-22 11:32:19,896 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-22 11:32:19,896 INFO ]: Start accepts. Automaton has 13 states. Word has length 69 [2018-06-22 11:32:19,896 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:19,899 INFO ]: With dead ends: 188 [2018-06-22 11:32:19,899 INFO ]: Without dead ends: 188 [2018-06-22 11:32:19,899 INFO ]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:32:19,900 INFO ]: Start minimizeSevpa. Operand 188 states. [2018-06-22 11:32:19,916 INFO ]: Finished minimizeSevpa. Reduced states from 188 to 160. [2018-06-22 11:32:19,916 INFO ]: Start removeUnreachable. Operand 160 states. [2018-06-22 11:32:19,918 INFO ]: Finished removeUnreachable. Reduced from 160 states to 160 states and 340 transitions. [2018-06-22 11:32:19,918 INFO ]: Start accepts. Automaton has 160 states and 340 transitions. Word has length 69 [2018-06-22 11:32:19,918 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:19,918 INFO ]: Abstraction has 160 states and 340 transitions. [2018-06-22 11:32:19,918 INFO ]: Interpolant automaton has 13 states. [2018-06-22 11:32:19,919 INFO ]: Start isEmpty. Operand 160 states and 340 transitions. [2018-06-22 11:32:19,922 INFO ]: Finished isEmpty. Found accepting run of length 102 [2018-06-22 11:32:19,922 INFO ]: Found error trace [2018-06-22 11:32:19,922 INFO ]: trace histogram [6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:19,922 INFO ]: === Iteration 17 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:19,923 INFO ]: Analyzing trace with hash -49892398, now seen corresponding path program 1 times [2018-06-22 11:32:19,923 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:19,923 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:19,923 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:19,923 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:19,923 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:19,935 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:20,258 INFO ]: Checked inductivity of 104 backedges. 11 proven. 36 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-06-22 11:32:20,258 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:20,258 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:32:20,264 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:20,299 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:20,302 INFO ]: Computing forward predicates... [2018-06-22 11:32:20,440 INFO ]: Checked inductivity of 104 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-06-22 11:32:20,458 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:32:20,458 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-06-22 11:32:20,459 INFO ]: Interpolant automaton has 24 states [2018-06-22 11:32:20,459 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 11:32:20,459 INFO ]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2018-06-22 11:32:20,459 INFO ]: Start difference. First operand 160 states and 340 transitions. Second operand 24 states. [2018-06-22 11:32:21,852 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:21,852 INFO ]: Finished difference Result 293 states and 735 transitions. [2018-06-22 11:32:21,852 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-06-22 11:32:21,853 INFO ]: Start accepts. Automaton has 24 states. Word has length 101 [2018-06-22 11:32:21,853 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:21,857 INFO ]: With dead ends: 293 [2018-06-22 11:32:21,857 INFO ]: Without dead ends: 283 [2018-06-22 11:32:21,858 INFO ]: 0 DeclaredPredicates, 127 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2018-06-22 11:32:21,858 INFO ]: Start minimizeSevpa. Operand 283 states. [2018-06-22 11:32:21,903 INFO ]: Finished minimizeSevpa. Reduced states from 283 to 255. [2018-06-22 11:32:21,903 INFO ]: Start removeUnreachable. Operand 255 states. [2018-06-22 11:32:21,906 INFO ]: Finished removeUnreachable. Reduced from 255 states to 255 states and 647 transitions. [2018-06-22 11:32:21,906 INFO ]: Start accepts. Automaton has 255 states and 647 transitions. Word has length 101 [2018-06-22 11:32:21,906 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:21,906 INFO ]: Abstraction has 255 states and 647 transitions. [2018-06-22 11:32:21,906 INFO ]: Interpolant automaton has 24 states. [2018-06-22 11:32:21,907 INFO ]: Start isEmpty. Operand 255 states and 647 transitions. [2018-06-22 11:32:21,915 INFO ]: Finished isEmpty. Found accepting run of length 106 [2018-06-22 11:32:21,915 INFO ]: Found error trace [2018-06-22 11:32:21,915 INFO ]: trace histogram [6, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:21,915 INFO ]: === Iteration 18 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:21,915 INFO ]: Analyzing trace with hash 1586173954, now seen corresponding path program 1 times [2018-06-22 11:32:21,915 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:21,915 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:21,916 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:21,916 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:21,916 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:21,923 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:22,171 INFO ]: Checked inductivity of 108 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-06-22 11:32:22,171 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:22,171 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 11:32:22,217 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:32:22,270 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:22,274 INFO ]: Computing forward predicates... [2018-06-22 11:32:22,621 INFO ]: Checked inductivity of 108 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-06-22 11:32:22,640 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:32:22,640 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-06-22 11:32:22,641 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:32:22,641 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:32:22,641 INFO ]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:32:22,641 INFO ]: Start difference. First operand 255 states and 647 transitions. Second operand 10 states. [2018-06-22 11:32:22,845 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:22,845 INFO ]: Finished difference Result 296 states and 690 transitions. [2018-06-22 11:32:22,845 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:32:22,845 INFO ]: Start accepts. Automaton has 10 states. Word has length 105 [2018-06-22 11:32:22,845 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:22,849 INFO ]: With dead ends: 296 [2018-06-22 11:32:22,849 INFO ]: Without dead ends: 292 [2018-06-22 11:32:22,849 INFO ]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:32:22,850 INFO ]: Start minimizeSevpa. Operand 292 states. [2018-06-22 11:32:22,881 INFO ]: Finished minimizeSevpa. Reduced states from 292 to 246. [2018-06-22 11:32:22,881 INFO ]: Start removeUnreachable. Operand 246 states. [2018-06-22 11:32:22,884 INFO ]: Finished removeUnreachable. Reduced from 246 states to 246 states and 567 transitions. [2018-06-22 11:32:22,884 INFO ]: Start accepts. Automaton has 246 states and 567 transitions. Word has length 105 [2018-06-22 11:32:22,885 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:22,885 INFO ]: Abstraction has 246 states and 567 transitions. [2018-06-22 11:32:22,885 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:32:22,885 INFO ]: Start isEmpty. Operand 246 states and 567 transitions. [2018-06-22 11:32:22,890 INFO ]: Finished isEmpty. Found accepting run of length 114 [2018-06-22 11:32:22,891 INFO ]: Found error trace [2018-06-22 11:32:22,891 INFO ]: trace histogram [6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:22,891 INFO ]: === Iteration 19 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:22,892 INFO ]: Analyzing trace with hash -1756314959, now seen corresponding path program 1 times [2018-06-22 11:32:22,892 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:22,892 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:22,892 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:22,892 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:22,892 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:22,909 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:23,411 INFO ]: Checked inductivity of 134 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-06-22 11:32:23,411 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:23,411 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:32:23,422 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:23,477 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:23,481 INFO ]: Computing forward predicates... [2018-06-22 11:32:23,714 INFO ]: Checked inductivity of 134 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-06-22 11:32:23,733 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:32:23,733 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2018-06-22 11:32:23,733 INFO ]: Interpolant automaton has 13 states [2018-06-22 11:32:23,734 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 11:32:23,734 INFO ]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:32:23,734 INFO ]: Start difference. First operand 246 states and 567 transitions. Second operand 13 states. [2018-06-22 11:32:23,912 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:23,913 INFO ]: Finished difference Result 267 states and 601 transitions. [2018-06-22 11:32:23,913 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:32:23,913 INFO ]: Start accepts. Automaton has 13 states. Word has length 113 [2018-06-22 11:32:23,913 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:23,916 INFO ]: With dead ends: 267 [2018-06-22 11:32:23,916 INFO ]: Without dead ends: 259 [2018-06-22 11:32:23,916 INFO ]: 0 DeclaredPredicates, 122 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:32:23,917 INFO ]: Start minimizeSevpa. Operand 259 states. [2018-06-22 11:32:23,945 INFO ]: Finished minimizeSevpa. Reduced states from 259 to 233. [2018-06-22 11:32:23,945 INFO ]: Start removeUnreachable. Operand 233 states. [2018-06-22 11:32:23,948 INFO ]: Finished removeUnreachable. Reduced from 233 states to 233 states and 507 transitions. [2018-06-22 11:32:23,948 INFO ]: Start accepts. Automaton has 233 states and 507 transitions. Word has length 113 [2018-06-22 11:32:23,949 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:23,949 INFO ]: Abstraction has 233 states and 507 transitions. [2018-06-22 11:32:23,949 INFO ]: Interpolant automaton has 13 states. [2018-06-22 11:32:23,950 INFO ]: Start isEmpty. Operand 233 states and 507 transitions. [2018-06-22 11:32:23,954 INFO ]: Finished isEmpty. Found accepting run of length 118 [2018-06-22 11:32:23,954 INFO ]: Found error trace [2018-06-22 11:32:23,955 INFO ]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:23,955 INFO ]: === Iteration 20 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:23,955 INFO ]: Analyzing trace with hash 1996463152, now seen corresponding path program 1 times [2018-06-22 11:32:23,955 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:23,955 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:23,955 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:23,955 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:23,955 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:23,973 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:24,148 INFO ]: Checked inductivity of 154 backedges. 7 proven. 40 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-06-22 11:32:24,148 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:24,148 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:32:24,171 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:24,227 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:24,232 INFO ]: Computing forward predicates... [2018-06-22 11:32:24,311 INFO ]: Checked inductivity of 154 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-06-22 11:32:24,331 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:32:24,331 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 17 [2018-06-22 11:32:24,331 INFO ]: Interpolant automaton has 17 states [2018-06-22 11:32:24,331 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 11:32:24,331 INFO ]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:32:24,331 INFO ]: Start difference. First operand 233 states and 507 transitions. Second operand 17 states. [2018-06-22 11:32:25,319 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:25,319 INFO ]: Finished difference Result 269 states and 587 transitions. [2018-06-22 11:32:25,322 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-22 11:32:25,322 INFO ]: Start accepts. Automaton has 17 states. Word has length 117 [2018-06-22 11:32:25,322 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:25,322 INFO ]: With dead ends: 269 [2018-06-22 11:32:25,322 INFO ]: Without dead ends: 0 [2018-06-22 11:32:25,323 INFO ]: 0 DeclaredPredicates, 139 GetRequests, 115 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2018-06-22 11:32:25,323 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:32:25,323 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:32:25,323 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:32:25,323 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:32:25,323 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 117 [2018-06-22 11:32:25,323 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:25,323 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:32:25,323 INFO ]: Interpolant automaton has 17 states. [2018-06-22 11:32:25,323 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:32:25,323 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:32:25,328 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:32:25 BoogieIcfgContainer [2018-06-22 11:32:25,328 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:32:25,329 INFO ]: Toolchain (without parser) took 17096.11 ms. Allocated memory was 309.3 MB in the beginning and 490.7 MB in the end (delta: 181.4 MB). Free memory was 259.7 MB in the beginning and 305.8 MB in the end (delta: -46.1 MB). Peak memory consumption was 135.3 MB. Max. memory is 3.6 GB. [2018-06-22 11:32:25,331 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:32:25,331 INFO ]: ChcToBoogie took 51.61 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 257.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:32:25,331 INFO ]: Boogie Preprocessor took 45.73 ms. Allocated memory is still 309.3 MB. Free memory was 257.7 MB in the beginning and 255.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:32:25,332 INFO ]: RCFGBuilder took 529.80 ms. Allocated memory is still 309.3 MB. Free memory was 255.7 MB in the beginning and 238.6 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:32:25,332 INFO ]: TraceAbstraction took 16457.75 ms. Allocated memory was 309.3 MB in the beginning and 490.7 MB in the end (delta: 181.4 MB). Free memory was 238.6 MB in the beginning and 305.8 MB in the end (delta: -67.3 MB). Peak memory consumption was 114.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:32:25,337 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 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 51.61 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 257.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 45.73 ms. Allocated memory is still 309.3 MB. Free memory was 257.7 MB in the beginning and 255.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 529.80 ms. Allocated memory is still 309.3 MB. Free memory was 255.7 MB in the beginning and 238.6 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 16457.75 ms. Allocated memory was 309.3 MB in the beginning and 490.7 MB in the end (delta: 181.4 MB). Free memory was 238.6 MB in the beginning and 305.8 MB in the end (delta: -67.3 MB). Peak memory consumption was 114.1 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 12 procedures, 63 locations, 1 error locations. SAFE Result, 16.3s OverallTime, 20 OverallIterations, 6 TraceHistogramMax, 8.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1704 SDtfs, 73 SDslu, 13868 SDs, 0 SdLazy, 6576 SolverSat, 188 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1289 GetRequests, 1056 SyntacticMatches, 8 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=255occurred in iteration=17, 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: 0.4s AutomataMinimizationTime, 20 MinimizatonAttempts, 265 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 2307 NumberOfCodeBlocks, 2307 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 2272 ConstructedInterpolants, 0 QuantifiedInterpolants, 258248 SizeOfPredicates, 42 NumberOfNonLiveVariables, 3976 ConjunctsInSsa, 204 ConjunctsInUnsatCore, 35 InterpolantComputations, 9 PerfectInterpolantSequences, 1368/1622 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/file.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-32-25-352.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/file.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-32-25-352.csv Received shutdown request...