java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/reve/010b-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:01:53,855 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:01:53,857 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:01:53,868 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:01:53,869 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:01:53,870 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:01:53,873 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:01:53,875 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:01:53,876 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:01:53,878 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:01:53,879 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:01:53,880 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:01:53,880 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:01:53,883 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:01:53,884 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:01:53,885 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:01:53,894 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:01:53,896 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:01:53,897 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:01:53,898 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:01:53,901 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:01:53,903 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:01:53,903 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:01:53,903 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:01:53,904 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:01:53,908 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:01:53,909 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:01:53,909 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:01:53,910 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:01:53,910 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:01:53,914 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:01:53,915 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:01:53,915 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:01:53,916 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:01:53,916 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:01:53,917 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:01:53,939 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:01:53,939 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:01:53,939 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:01:53,940 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:01:53,940 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:01:53,941 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:01:53,941 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:01:53,941 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:01:53,941 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:01:53,942 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:01:53,943 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:01:53,943 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:01:53,943 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:01:53,943 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:01:53,943 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:01:53,943 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:01:53,944 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:01:53,944 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:01:53,944 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:01:53,944 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:01:53,944 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:01:53,946 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:01:53,947 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:01:53,990 INFO ]: Repository-Root is: /tmp [2018-06-24 21:01:54,008 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:01:54,011 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:01:54,012 INFO ]: Initializing SmtParser... [2018-06-24 21:01:54,013 INFO ]: SmtParser initialized [2018-06-24 21:01:54,014 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/010b-horn.smt2 [2018-06-24 21:01:54,015 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 21:01:54,101 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/010b-horn.smt2 unknown [2018-06-24 21:01:54,285 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/010b-horn.smt2 [2018-06-24 21:01:54,291 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:01:54,297 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:01:54,297 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:01:54,297 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:01:54,297 INFO ]: ChcToBoogie initialized [2018-06-24 21:01:54,301 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:01:54" (1/1) ... [2018-06-24 21:01:54,352 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:54 Unit [2018-06-24 21:01:54,352 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:01:54,352 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:01:54,352 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:01:54,352 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:01:54,372 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:54" (1/1) ... [2018-06-24 21:01:54,372 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:54" (1/1) ... [2018-06-24 21:01:54,377 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:54" (1/1) ... [2018-06-24 21:01:54,378 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:54" (1/1) ... [2018-06-24 21:01:54,382 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:54" (1/1) ... [2018-06-24 21:01:54,385 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:54" (1/1) ... [2018-06-24 21:01:54,385 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:54" (1/1) ... [2018-06-24 21:01:54,388 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:01:54,389 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:01:54,389 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:01:54,389 INFO ]: RCFGBuilder initialized [2018-06-24 21:01:54,389 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:54" (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) [2018-06-24 21:01:54,403 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:01:54,403 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:01:54,403 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:01:54,404 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:01:54,404 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:01:54,404 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 [2018-06-24 21:01:54,709 INFO ]: Using library mode [2018-06-24 21:01:54,709 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:01:54 BoogieIcfgContainer [2018-06-24 21:01:54,710 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:01:54,710 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:01:54,710 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:01:54,711 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:01:54,711 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:01:54" (1/1) ... [2018-06-24 21:01:54,733 INFO ]: Initial Icfg 10 locations, 12 edges [2018-06-24 21:01:54,734 INFO ]: Using Remove infeasible edges [2018-06-24 21:01:54,735 INFO ]: Using Maximize final states [2018-06-24 21:01:54,735 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:01:54,735 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:01:54,738 INFO ]: Using Remove sink states [2018-06-24 21:01:54,739 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:01:54,739 INFO ]: Using Use SBE [2018-06-24 21:01:54,744 INFO ]: SBE split 0 edges [2018-06-24 21:01:54,750 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 21:01:54,752 INFO ]: 0 new accepting states [2018-06-24 21:01:54,801 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-24 21:01:54,803 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:01:54,807 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:01:54,807 INFO ]: 0 new accepting states [2018-06-24 21:01:54,807 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:01:54,807 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:01:54,807 INFO ]: Encoded RCFG 6 locations, 8 edges [2018-06-24 21:01:54,808 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:01:54 BasicIcfg [2018-06-24 21:01:54,808 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:01:54,809 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:01:54,809 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:01:54,811 INFO ]: TraceAbstraction initialized [2018-06-24 21:01:54,812 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:01:54" (1/4) ... [2018-06-24 21:01:54,812 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfd9282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:01:54, skipping insertion in model container [2018-06-24 21:01:54,813 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:54" (2/4) ... [2018-06-24 21:01:54,813 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfd9282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:01:54, skipping insertion in model container [2018-06-24 21:01:54,813 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:01:54" (3/4) ... [2018-06-24 21:01:54,813 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfd9282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:01:54, skipping insertion in model container [2018-06-24 21:01:54,813 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:01:54" (4/4) ... [2018-06-24 21:01:54,815 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:01:54,822 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:01:54,828 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:01:54,865 INFO ]: Using default assertion order modulation [2018-06-24 21:01:54,865 INFO ]: Interprodecural is true [2018-06-24 21:01:54,865 INFO ]: Hoare is false [2018-06-24 21:01:54,865 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:01:54,865 INFO ]: Backedges is TWOTRACK [2018-06-24 21:01:54,865 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:01:54,865 INFO ]: Difference is false [2018-06-24 21:01:54,865 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:01:54,865 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:01:54,875 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 21:01:54,883 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:01:54,883 INFO ]: Found error trace [2018-06-24 21:01:54,884 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:01:54,884 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:01:54,889 INFO ]: Analyzing trace with hash 37311172, now seen corresponding path program 1 times [2018-06-24 21:01:54,891 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:01:54,891 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:01:54,924 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:54,924 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:54,924 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:54,976 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:55,039 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:55,041 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:01:55,041 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:01:55,042 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:01:55,054 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:01:55,054 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:01:55,056 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 21:01:55,124 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:01:55,124 INFO ]: Finished difference Result 7 states and 11 transitions. [2018-06-24 21:01:55,124 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:01:55,125 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:01:55,125 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:01:55,133 INFO ]: With dead ends: 7 [2018-06-24 21:01:55,133 INFO ]: Without dead ends: 7 [2018-06-24 21:01:55,135 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:01:55,153 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:01:55,186 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:01:55,187 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:01:55,188 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-24 21:01:55,189 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 5 [2018-06-24 21:01:55,189 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:01:55,189 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-24 21:01:55,189 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:01:55,189 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-24 21:01:55,189 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:01:55,189 INFO ]: Found error trace [2018-06-24 21:01:55,190 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:01:55,190 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:01:55,190 INFO ]: Analyzing trace with hash 1156261132, now seen corresponding path program 1 times [2018-06-24 21:01:55,190 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:01:55,190 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:01:55,192 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:55,192 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:55,192 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:55,226 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:55,408 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:55,408 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:01:55,408 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) [2018-06-24 21:01:55,425 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:01:55,483 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:55,491 INFO ]: Computing forward predicates... [2018-06-24 21:01:55,718 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:55,752 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:01:55,752 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-24 21:01:55,752 INFO ]: Interpolant automaton has 6 states [2018-06-24 21:01:55,753 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 21:01:55,753 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:01:55,753 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 6 states. [2018-06-24 21:01:56,073 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:01:56,073 INFO ]: Finished difference Result 10 states and 18 transitions. [2018-06-24 21:01:56,073 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-24 21:01:56,073 INFO ]: Start accepts. Automaton has 6 states. Word has length 6 [2018-06-24 21:01:56,073 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:01:56,074 INFO ]: With dead ends: 10 [2018-06-24 21:01:56,074 INFO ]: Without dead ends: 10 [2018-06-24 21:01:56,075 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:01:56,075 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-24 21:01:56,076 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-24 21:01:56,076 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-24 21:01:56,076 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2018-06-24 21:01:56,076 INFO ]: Start accepts. Automaton has 10 states and 18 transitions. Word has length 6 [2018-06-24 21:01:56,076 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:01:56,076 INFO ]: Abstraction has 10 states and 18 transitions. [2018-06-24 21:01:56,076 INFO ]: Interpolant automaton has 6 states. [2018-06-24 21:01:56,076 INFO ]: Start isEmpty. Operand 10 states and 18 transitions. [2018-06-24 21:01:56,076 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:01:56,076 INFO ]: Found error trace [2018-06-24 21:01:56,077 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:01:56,077 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:01:56,077 INFO ]: Analyzing trace with hash 1156290923, now seen corresponding path program 1 times [2018-06-24 21:01:56,077 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:01:56,077 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:01:56,078 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:56,080 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:56,080 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:56,107 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:56,359 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:56,361 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:01:56,361 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) [2018-06-24 21:01:56,376 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:01:56,421 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:56,423 INFO ]: Computing forward predicates... [2018-06-24 21:01:56,481 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:56,501 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:01:56,501 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-24 21:01:56,501 INFO ]: Interpolant automaton has 6 states [2018-06-24 21:01:56,501 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 21:01:56,501 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:01:56,501 INFO ]: Start difference. First operand 10 states and 18 transitions. Second operand 6 states. [2018-06-24 21:01:56,648 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:01:56,648 INFO ]: Finished difference Result 11 states and 21 transitions. [2018-06-24 21:01:56,648 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:01:56,648 INFO ]: Start accepts. Automaton has 6 states. Word has length 6 [2018-06-24 21:01:56,648 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:01:56,648 INFO ]: With dead ends: 11 [2018-06-24 21:01:56,648 INFO ]: Without dead ends: 11 [2018-06-24 21:01:56,649 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:01:56,649 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 21:01:56,650 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-24 21:01:56,650 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-24 21:01:56,651 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 21 transitions. [2018-06-24 21:01:56,651 INFO ]: Start accepts. Automaton has 11 states and 21 transitions. Word has length 6 [2018-06-24 21:01:56,651 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:01:56,651 INFO ]: Abstraction has 11 states and 21 transitions. [2018-06-24 21:01:56,651 INFO ]: Interpolant automaton has 6 states. [2018-06-24 21:01:56,651 INFO ]: Start isEmpty. Operand 11 states and 21 transitions. [2018-06-24 21:01:56,651 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 21:01:56,651 INFO ]: Found error trace [2018-06-24 21:01:56,651 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:01:56,651 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:01:56,651 INFO ]: Analyzing trace with hash 1484895045, now seen corresponding path program 1 times [2018-06-24 21:01:56,651 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:01:56,651 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:01:56,652 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:56,652 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:56,652 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:56,678 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:56,958 WARN ]: Spent 187.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2018-06-24 21:01:57,154 WARN ]: Spent 189.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2018-06-24 21:01:57,187 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:57,188 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:01:57,188 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:01:57,194 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:57,237 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:57,240 INFO ]: Computing forward predicates... [2018-06-24 21:01:57,550 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:57,580 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:01:57,580 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-24 21:01:57,580 INFO ]: Interpolant automaton has 8 states [2018-06-24 21:01:57,580 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 21:01:57,581 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:01:57,581 INFO ]: Start difference. First operand 11 states and 21 transitions. Second operand 8 states. [2018-06-24 21:01:57,881 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:01:57,881 INFO ]: Finished difference Result 13 states and 27 transitions. [2018-06-24 21:01:57,882 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-24 21:01:57,882 INFO ]: Start accepts. Automaton has 8 states. Word has length 7 [2018-06-24 21:01:57,882 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:01:57,882 INFO ]: With dead ends: 13 [2018-06-24 21:01:57,882 INFO ]: Without dead ends: 13 [2018-06-24 21:01:57,883 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-06-24 21:01:57,883 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-24 21:01:57,884 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-24 21:01:57,884 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-24 21:01:57,885 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 27 transitions. [2018-06-24 21:01:57,885 INFO ]: Start accepts. Automaton has 13 states and 27 transitions. Word has length 7 [2018-06-24 21:01:57,885 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:01:57,885 INFO ]: Abstraction has 13 states and 27 transitions. [2018-06-24 21:01:57,885 INFO ]: Interpolant automaton has 8 states. [2018-06-24 21:01:57,885 INFO ]: Start isEmpty. Operand 13 states and 27 transitions. [2018-06-24 21:01:57,885 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 21:01:57,885 INFO ]: Found error trace [2018-06-24 21:01:57,885 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-24 21:01:57,885 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:01:57,886 INFO ]: Analyzing trace with hash 1484924836, now seen corresponding path program 2 times [2018-06-24 21:01:57,886 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:01:57,886 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:01:57,886 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:57,886 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:57,886 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:57,901 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:57,951 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:57,951 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:01:57,951 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 [2018-06-24 21:01:57,958 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:01:57,984 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:01:57,985 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:57,986 INFO ]: Computing forward predicates... [2018-06-24 21:01:58,007 INFO ]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:58,029 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:01:58,029 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2018-06-24 21:01:58,029 INFO ]: Interpolant automaton has 7 states [2018-06-24 21:01:58,029 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 21:01:58,029 INFO ]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:01:58,029 INFO ]: Start difference. First operand 13 states and 27 transitions. Second operand 7 states. [2018-06-24 21:01:58,161 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:01:58,161 INFO ]: Finished difference Result 17 states and 28 transitions. [2018-06-24 21:01:58,162 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-24 21:01:58,162 INFO ]: Start accepts. Automaton has 7 states. Word has length 7 [2018-06-24 21:01:58,162 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:01:58,162 INFO ]: With dead ends: 17 [2018-06-24 21:01:58,162 INFO ]: Without dead ends: 10 [2018-06-24 21:01:58,163 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-06-24 21:01:58,163 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-24 21:01:58,164 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-24 21:01:58,164 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-24 21:01:58,164 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-24 21:01:58,164 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-06-24 21:01:58,164 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:01:58,164 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-24 21:01:58,164 INFO ]: Interpolant automaton has 7 states. [2018-06-24 21:01:58,164 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-24 21:01:58,164 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 21:01:58,164 INFO ]: Found error trace [2018-06-24 21:01:58,164 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2018-06-24 21:01:58,165 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:01:58,165 INFO ]: Analyzing trace with hash 1042669573, now seen corresponding path program 2 times [2018-06-24 21:01:58,165 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:01:58,165 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:01:58,165 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:58,165 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:01:58,165 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:58,186 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:58,366 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:58,366 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:01:58,367 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:01:58,376 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:01:58,401 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:01:58,401 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:58,403 INFO ]: Computing forward predicates... [2018-06-24 21:01:58,429 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:58,452 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:01:58,452 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-06-24 21:01:58,452 INFO ]: Interpolant automaton has 7 states [2018-06-24 21:01:58,453 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 21:01:58,453 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:01:58,453 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2018-06-24 21:01:58,517 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:01:58,517 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-24 21:01:58,517 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 21:01:58,517 INFO ]: Start accepts. Automaton has 7 states. Word has length 9 [2018-06-24 21:01:58,517 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:01:58,517 INFO ]: With dead ends: 11 [2018-06-24 21:01:58,517 INFO ]: Without dead ends: 11 [2018-06-24 21:01:58,518 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:01:58,518 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 21:01:58,519 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-24 21:01:58,519 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-24 21:01:58,519 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-24 21:01:58,519 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-24 21:01:58,519 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:01:58,519 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-24 21:01:58,519 INFO ]: Interpolant automaton has 7 states. [2018-06-24 21:01:58,519 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-24 21:01:58,519 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-24 21:01:58,519 INFO ]: Found error trace [2018-06-24 21:01:58,519 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2018-06-24 21:01:58,520 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:01:58,520 INFO ]: Analyzing trace with hash -2037366805, now seen corresponding path program 3 times [2018-06-24 21:01:58,520 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:01:58,520 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:01:58,520 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:58,520 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:01:58,520 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:58,545 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:58,670 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:58,670 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:01:58,670 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 [2018-06-24 21:01:58,681 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-24 21:01:58,778 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-24 21:01:58,778 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:58,782 INFO ]: Computing forward predicates... [2018-06-24 21:01:58,957 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:58,986 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:01:58,986 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-06-24 21:01:58,987 INFO ]: Interpolant automaton has 8 states [2018-06-24 21:01:58,987 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 21:01:58,987 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:01:58,987 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 8 states. [2018-06-24 21:01:59,052 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:01:59,052 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-24 21:01:59,053 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-24 21:01:59,053 INFO ]: Start accepts. Automaton has 8 states. Word has length 10 [2018-06-24 21:01:59,053 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:01:59,053 INFO ]: With dead ends: 12 [2018-06-24 21:01:59,053 INFO ]: Without dead ends: 12 [2018-06-24 21:01:59,054 INFO ]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:01:59,054 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-24 21:01:59,055 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-24 21:01:59,055 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-24 21:01:59,055 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-24 21:01:59,055 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-24 21:01:59,055 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:01:59,055 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-24 21:01:59,055 INFO ]: Interpolant automaton has 8 states. [2018-06-24 21:01:59,055 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-24 21:01:59,055 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-24 21:01:59,055 INFO ]: Found error trace [2018-06-24 21:01:59,055 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2018-06-24 21:01:59,056 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:01:59,056 INFO ]: Analyzing trace with hash 1265753285, now seen corresponding path program 4 times [2018-06-24 21:01:59,056 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:01:59,056 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:01:59,056 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:59,056 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:01:59,056 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:59,076 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:59,268 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:59,268 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:01:59,268 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 [2018-06-24 21:01:59,275 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-24 21:01:59,322 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-24 21:01:59,322 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:59,325 INFO ]: Computing forward predicates... [2018-06-24 21:01:59,379 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:59,408 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:01:59,408 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-06-24 21:01:59,408 INFO ]: Interpolant automaton has 9 states [2018-06-24 21:01:59,409 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-24 21:01:59,409 INFO ]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-06-24 21:01:59,409 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2018-06-24 21:01:59,447 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:01:59,447 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-24 21:01:59,447 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-24 21:01:59,447 INFO ]: Start accepts. Automaton has 9 states. Word has length 11 [2018-06-24 21:01:59,447 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:01:59,447 INFO ]: With dead ends: 13 [2018-06-24 21:01:59,447 INFO ]: Without dead ends: 13 [2018-06-24 21:01:59,448 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-06-24 21:01:59,448 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-24 21:01:59,449 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-24 21:01:59,449 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-24 21:01:59,449 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-24 21:01:59,449 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-24 21:01:59,449 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:01:59,449 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-24 21:01:59,449 INFO ]: Interpolant automaton has 9 states. [2018-06-24 21:01:59,449 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-24 21:01:59,450 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-24 21:01:59,450 INFO ]: Found error trace [2018-06-24 21:01:59,450 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2018-06-24 21:01:59,450 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:01:59,450 INFO ]: Analyzing trace with hash 583260971, now seen corresponding path program 5 times [2018-06-24 21:01:59,450 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:01:59,450 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:01:59,451 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:59,451 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:01:59,451 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:59,488 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:59,970 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:59,970 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:01:59,970 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 [2018-06-24 21:01:59,978 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-24 21:02:00,016 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-06-24 21:02:00,016 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:02:00,020 INFO ]: Computing forward predicates... [2018-06-24 21:02:00,040 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:02:00,061 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:02:00,062 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-06-24 21:02:00,062 INFO ]: Interpolant automaton has 10 states [2018-06-24 21:02:00,062 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-24 21:02:00,062 INFO ]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-06-24 21:02:00,062 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 10 states. [2018-06-24 21:02:00,255 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:02:00,255 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-24 21:02:00,256 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-24 21:02:00,256 INFO ]: Start accepts. Automaton has 10 states. Word has length 12 [2018-06-24 21:02:00,256 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:02:00,256 INFO ]: With dead ends: 14 [2018-06-24 21:02:00,256 INFO ]: Without dead ends: 14 [2018-06-24 21:02:00,256 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-06-24 21:02:00,256 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-24 21:02:00,257 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-24 21:02:00,257 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-24 21:02:00,258 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-24 21:02:00,258 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-24 21:02:00,258 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:02:00,258 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-24 21:02:00,258 INFO ]: Interpolant automaton has 10 states. [2018-06-24 21:02:00,258 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-24 21:02:00,258 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-24 21:02:00,258 INFO ]: Found error trace [2018-06-24 21:02:00,258 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1] [2018-06-24 21:02:00,258 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:02:00,259 INFO ]: Analyzing trace with hash 900835717, now seen corresponding path program 6 times [2018-06-24 21:02:00,259 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:02:00,259 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:02:00,259 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:02:00,259 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:02:00,259 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:02:00,286 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:02:01,412 INFO ]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:02:01,412 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:02:01,412 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 [2018-06-24 21:02:01,418 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-24 21:02:01,480 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-06-24 21:02:01,480 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:02:01,485 INFO ]: Computing forward predicates... [2018-06-24 21:02:01,665 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:02:01,698 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:02:01,698 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 12 [2018-06-24 21:02:01,698 INFO ]: Interpolant automaton has 12 states [2018-06-24 21:02:01,698 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-24 21:02:01,698 INFO ]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-06-24 21:02:01,698 INFO ]: Start difference. First operand 14 states and 14 transitions. Second operand 12 states. [2018-06-24 21:02:01,878 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:02:01,878 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-24 21:02:01,878 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-24 21:02:01,879 INFO ]: Start accepts. Automaton has 12 states. Word has length 13 [2018-06-24 21:02:01,879 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:02:01,879 INFO ]: With dead ends: 12 [2018-06-24 21:02:01,879 INFO ]: Without dead ends: 0 [2018-06-24 21:02:01,879 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-06-24 21:02:01,879 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:02:01,879 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:02:01,879 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:02:01,879 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:02:01,879 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-06-24 21:02:01,879 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:02:01,879 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:02:01,879 INFO ]: Interpolant automaton has 12 states. [2018-06-24 21:02:01,879 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:02:01,879 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:02:01,881 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:02:01,882 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:02:01 BasicIcfg [2018-06-24 21:02:01,882 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:02:01,883 INFO ]: Toolchain (without parser) took 7592.03 ms. Allocated memory was 305.7 MB in the beginning and 366.0 MB in the end (delta: 60.3 MB). Free memory was 262.0 MB in the beginning and 322.7 MB in the end (delta: -60.6 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:02:01,884 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 305.7 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:02:01,884 INFO ]: ChcToBoogie took 54.84 ms. Allocated memory is still 305.7 MB. Free memory was 261.0 MB in the beginning and 259.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:02:01,884 INFO ]: Boogie Preprocessor took 35.88 ms. Allocated memory is still 305.7 MB. Free memory was 259.0 MB in the beginning and 258.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 21:02:01,885 INFO ]: RCFGBuilder took 321.00 ms. Allocated memory is still 305.7 MB. Free memory was 258.1 MB in the beginning and 248.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:02:01,885 INFO ]: BlockEncodingV2 took 97.70 ms. Allocated memory is still 305.7 MB. Free memory was 248.0 MB in the beginning and 246.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:02:01,886 INFO ]: TraceAbstraction took 7073.90 ms. Allocated memory was 305.7 MB in the beginning and 366.0 MB in the end (delta: 60.3 MB). Free memory was 245.1 MB in the beginning and 322.7 MB in the end (delta: -77.6 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:02:01,888 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 12 edges - StatisticsResult: Encoded RCFG 6 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 305.7 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 54.84 ms. Allocated memory is still 305.7 MB. Free memory was 261.0 MB in the beginning and 259.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 35.88 ms. Allocated memory is still 305.7 MB. Free memory was 259.0 MB in the beginning and 258.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 321.00 ms. Allocated memory is still 305.7 MB. Free memory was 258.1 MB in the beginning and 248.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 97.70 ms. Allocated memory is still 305.7 MB. Free memory was 248.0 MB in the beginning and 246.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 7073.90 ms. Allocated memory was 305.7 MB in the beginning and 366.0 MB in the end (delta: 60.3 MB). Free memory was 245.1 MB in the beginning and 322.7 MB in the end (delta: -77.6 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. SAFE Result, 7.0s OverallTime, 10 OverallIterations, 7 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 46 SDtfs, 2 SDslu, 138 SDs, 0 SdLazy, 481 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 70 SyntacticMatches, 12 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 18275 SizeOfPredicates, 33 NumberOfNonLiveVariables, 1899 ConjunctsInSsa, 477 ConjunctsInUnsatCore, 19 InterpolantComputations, 2 PerfectInterpolantSequences, 4/236 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/010b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-02-01-899.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/010b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-02-01-899.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/010b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-02-01-899.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/010b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-02-01-899.csv Received shutdown request...