java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/bcopy5.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:16:59,745 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:16:59,747 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:16:59,762 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:16:59,762 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:16:59,763 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:16:59,764 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:16:59,766 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:16:59,768 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:16:59,769 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:16:59,770 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:16:59,770 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:16:59,771 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:16:59,772 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:16:59,773 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:16:59,774 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:16:59,774 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:16:59,776 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:16:59,786 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:16:59,788 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:16:59,789 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:16:59,790 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:16:59,793 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:16:59,793 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:16:59,793 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:16:59,798 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:16:59,799 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:16:59,799 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:16:59,800 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:16:59,801 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:16:59,801 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:16:59,802 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:16:59,802 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:16:59,802 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:16:59,803 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:16:59,803 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:16:59,804 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:16:59,816 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:16:59,817 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:16:59,817 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:16:59,817 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:16:59,818 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:16:59,818 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:16:59,819 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:16:59,819 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:16:59,819 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:16:59,819 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:16:59,819 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:16:59,820 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:16:59,820 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:16:59,820 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:16:59,820 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:16:59,820 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:16:59,821 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:16:59,821 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:16:59,821 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:16:59,821 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:16:59,821 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:16:59,823 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:16:59,823 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:16:59,869 INFO ]: Repository-Root is: /tmp [2018-06-26 18:16:59,884 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:16:59,889 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:16:59,890 INFO ]: Initializing SmtParser... [2018-06-26 18:16:59,891 INFO ]: SmtParser initialized [2018-06-26 18:16:59,891 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/bcopy5.smt2 [2018-06-26 18:16:59,892 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 [2018-06-26 18:16:59,976 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/bcopy5.smt2 unknown [2018-06-26 18:17:00,331 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/bcopy5.smt2 [2018-06-26 18:17:00,337 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:17:00,345 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:17:00,346 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:17:00,346 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:17:00,346 INFO ]: ChcToBoogie initialized [2018-06-26 18:17:00,349 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:17:00" (1/1) ... [2018-06-26 18:17:00,421 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:17:00 Unit [2018-06-26 18:17:00,421 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:17:00,421 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:17:00,421 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:17:00,421 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:17:00,445 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:17:00" (1/1) ... [2018-06-26 18:17:00,445 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:17:00" (1/1) ... [2018-06-26 18:17:00,453 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:17:00" (1/1) ... [2018-06-26 18:17:00,453 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:17:00" (1/1) ... [2018-06-26 18:17:00,463 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:17:00" (1/1) ... [2018-06-26 18:17:00,467 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:17:00" (1/1) ... [2018-06-26 18:17:00,469 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:17:00" (1/1) ... [2018-06-26 18:17:00,472 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:17:00,472 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:17:00,472 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:17:00,472 INFO ]: RCFGBuilder initialized [2018-06-26 18:17:00,473 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:17:00" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:17:00,486 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:17:00,486 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:17:00,486 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:17:00,486 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:17:00,486 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:17:00,486 INFO ]: Found implementation of procedure Ultimate.START [2018-06-26 18:17:01,233 INFO ]: Using library mode [2018-06-26 18:17:01,234 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:17:01 BoogieIcfgContainer [2018-06-26 18:17:01,234 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:17:01,234 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:17:01,234 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:17:01,235 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:17:01,236 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:17:01" (1/1) ... [2018-06-26 18:17:01,258 INFO ]: Initial Icfg 74 locations, 115 edges [2018-06-26 18:17:01,259 INFO ]: Using Remove infeasible edges [2018-06-26 18:17:01,259 INFO ]: Using Maximize final states [2018-06-26 18:17:01,260 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:17:01,260 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:17:01,262 INFO ]: Using Remove sink states [2018-06-26 18:17:01,262 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:17:01,263 INFO ]: Using Use SBE [2018-06-26 18:17:01,311 INFO ]: SBE split 1 edges [2018-06-26 18:17:01,316 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-26 18:17:01,319 INFO ]: 0 new accepting states [2018-06-26 18:17:01,784 INFO ]: Removed 90 edges and 27 locations by large block encoding [2018-06-26 18:17:01,786 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:17:01,789 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:17:01,789 INFO ]: 0 new accepting states [2018-06-26 18:17:01,790 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:17:01,791 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:17:01,791 INFO ]: Encoded RCFG 45 locations, 87 edges [2018-06-26 18:17:01,792 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:17:01 BasicIcfg [2018-06-26 18:17:01,792 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:17:01,794 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:17:01,794 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:17:01,797 INFO ]: TraceAbstraction initialized [2018-06-26 18:17:01,799 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:17:00" (1/4) ... [2018-06-26 18:17:01,800 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3329cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:17:01, skipping insertion in model container [2018-06-26 18:17:01,800 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:17:00" (2/4) ... [2018-06-26 18:17:01,800 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3329cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:17:01, skipping insertion in model container [2018-06-26 18:17:01,800 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:17:01" (3/4) ... [2018-06-26 18:17:01,800 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3329cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:17:01, skipping insertion in model container [2018-06-26 18:17:01,800 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:17:01" (4/4) ... [2018-06-26 18:17:01,803 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:17:01,813 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:17:01,821 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:17:01,873 INFO ]: Using default assertion order modulation [2018-06-26 18:17:01,874 INFO ]: Interprodecural is true [2018-06-26 18:17:01,874 INFO ]: Hoare is false [2018-06-26 18:17:01,874 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:17:01,874 INFO ]: Backedges is TWOTRACK [2018-06-26 18:17:01,874 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:17:01,874 INFO ]: Difference is false [2018-06-26 18:17:01,874 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:17:01,874 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:17:01,889 INFO ]: Start isEmpty. Operand 45 states. [2018-06-26 18:17:01,911 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:17:01,912 INFO ]: Found error trace [2018-06-26 18:17:01,913 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:17:01,913 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:01,918 INFO ]: Analyzing trace with hash 89216458, now seen corresponding path program 1 times [2018-06-26 18:17:01,920 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:01,921 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:01,967 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:01,967 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:01,967 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:02,017 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:02,073 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:17:02,075 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:17:02,075 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:17:02,076 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:17:02,089 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:17:02,089 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:17:02,091 INFO ]: Start difference. First operand 45 states. Second operand 3 states. [2018-06-26 18:17:03,163 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:03,163 INFO ]: Finished difference Result 56 states and 117 transitions. [2018-06-26 18:17:03,164 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:17:03,165 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:17:03,165 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:03,181 INFO ]: With dead ends: 56 [2018-06-26 18:17:03,181 INFO ]: Without dead ends: 56 [2018-06-26 18:17:03,183 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 [2018-06-26 18:17:03,201 INFO ]: Start minimizeSevpa. Operand 56 states. [2018-06-26 18:17:03,242 INFO ]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-06-26 18:17:03,244 INFO ]: Start removeUnreachable. Operand 56 states. [2018-06-26 18:17:03,249 INFO ]: Finished removeUnreachable. Reduced from 56 states to 56 states and 117 transitions. [2018-06-26 18:17:03,250 INFO ]: Start accepts. Automaton has 56 states and 117 transitions. Word has length 5 [2018-06-26 18:17:03,251 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:03,251 INFO ]: Abstraction has 56 states and 117 transitions. [2018-06-26 18:17:03,251 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:17:03,251 INFO ]: Start isEmpty. Operand 56 states and 117 transitions. [2018-06-26 18:17:03,256 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:17:03,256 INFO ]: Found error trace [2018-06-26 18:17:03,256 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:17:03,256 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:03,256 INFO ]: Analyzing trace with hash -1522088185, now seen corresponding path program 1 times [2018-06-26 18:17:03,257 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:03,257 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:03,257 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:03,257 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:03,257 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:03,273 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:03,369 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:17:03,369 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:17:03,369 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 18:17:03,371 INFO ]: Interpolant automaton has 4 states [2018-06-26 18:17:03,371 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 18:17:03,371 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 18:17:03,371 INFO ]: Start difference. First operand 56 states and 117 transitions. Second operand 4 states. [2018-06-26 18:17:03,556 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:03,556 INFO ]: Finished difference Result 86 states and 203 transitions. [2018-06-26 18:17:03,557 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 18:17:03,557 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-26 18:17:03,557 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:03,566 INFO ]: With dead ends: 86 [2018-06-26 18:17:03,567 INFO ]: Without dead ends: 86 [2018-06-26 18:17:03,567 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:17:03,568 INFO ]: Start minimizeSevpa. Operand 86 states. [2018-06-26 18:17:03,590 INFO ]: Finished minimizeSevpa. Reduced states from 86 to 60. [2018-06-26 18:17:03,590 INFO ]: Start removeUnreachable. Operand 60 states. [2018-06-26 18:17:03,593 INFO ]: Finished removeUnreachable. Reduced from 60 states to 60 states and 123 transitions. [2018-06-26 18:17:03,594 INFO ]: Start accepts. Automaton has 60 states and 123 transitions. Word has length 6 [2018-06-26 18:17:03,594 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:03,594 INFO ]: Abstraction has 60 states and 123 transitions. [2018-06-26 18:17:03,594 INFO ]: Interpolant automaton has 4 states. [2018-06-26 18:17:03,594 INFO ]: Start isEmpty. Operand 60 states and 123 transitions. [2018-06-26 18:17:03,597 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:17:03,597 INFO ]: Found error trace [2018-06-26 18:17:03,597 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:17:03,597 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:03,598 INFO ]: Analyzing trace with hash -1521164664, now seen corresponding path program 1 times [2018-06-26 18:17:03,598 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:03,598 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:03,598 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:03,598 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:03,599 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:03,625 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:03,686 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:17:03,686 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:17:03,687 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:17:03,687 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:17:03,687 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:17:03,687 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:17:03,687 INFO ]: Start difference. First operand 60 states and 123 transitions. Second operand 3 states. [2018-06-26 18:17:03,734 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:03,734 INFO ]: Finished difference Result 81 states and 189 transitions. [2018-06-26 18:17:03,735 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:17:03,735 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-26 18:17:03,735 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:03,739 INFO ]: With dead ends: 81 [2018-06-26 18:17:03,739 INFO ]: Without dead ends: 81 [2018-06-26 18:17:03,739 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 [2018-06-26 18:17:03,740 INFO ]: Start minimizeSevpa. Operand 81 states. [2018-06-26 18:17:03,757 INFO ]: Finished minimizeSevpa. Reduced states from 81 to 61. [2018-06-26 18:17:03,758 INFO ]: Start removeUnreachable. Operand 61 states. [2018-06-26 18:17:03,760 INFO ]: Finished removeUnreachable. Reduced from 61 states to 61 states and 123 transitions. [2018-06-26 18:17:03,760 INFO ]: Start accepts. Automaton has 61 states and 123 transitions. Word has length 6 [2018-06-26 18:17:03,760 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:03,760 INFO ]: Abstraction has 61 states and 123 transitions. [2018-06-26 18:17:03,760 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:17:03,760 INFO ]: Start isEmpty. Operand 61 states and 123 transitions. [2018-06-26 18:17:03,766 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-26 18:17:03,766 INFO ]: Found error trace [2018-06-26 18:17:03,766 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:17:03,767 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:03,767 INFO ]: Analyzing trace with hash 661874597, now seen corresponding path program 1 times [2018-06-26 18:17:03,767 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:03,767 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:03,768 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:03,768 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:03,768 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:03,792 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:03,874 INFO ]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-26 18:17:03,874 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:17:03,875 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:17:03,875 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:17:03,875 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:17:03,875 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:17:03,875 INFO ]: Start difference. First operand 61 states and 123 transitions. Second operand 3 states. [2018-06-26 18:17:04,187 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:04,188 INFO ]: Finished difference Result 74 states and 133 transitions. [2018-06-26 18:17:04,188 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:17:04,188 INFO ]: Start accepts. Automaton has 3 states. Word has length 17 [2018-06-26 18:17:04,188 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:04,190 INFO ]: With dead ends: 74 [2018-06-26 18:17:04,190 INFO ]: Without dead ends: 74 [2018-06-26 18:17:04,190 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 [2018-06-26 18:17:04,191 INFO ]: Start minimizeSevpa. Operand 74 states. [2018-06-26 18:17:04,200 INFO ]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-06-26 18:17:04,200 INFO ]: Start removeUnreachable. Operand 74 states. [2018-06-26 18:17:04,203 INFO ]: Finished removeUnreachable. Reduced from 74 states to 74 states and 133 transitions. [2018-06-26 18:17:04,203 INFO ]: Start accepts. Automaton has 74 states and 133 transitions. Word has length 17 [2018-06-26 18:17:04,203 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:04,203 INFO ]: Abstraction has 74 states and 133 transitions. [2018-06-26 18:17:04,203 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:17:04,204 INFO ]: Start isEmpty. Operand 74 states and 133 transitions. [2018-06-26 18:17:04,206 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-26 18:17:04,207 INFO ]: Found error trace [2018-06-26 18:17:04,207 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:17:04,207 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:04,207 INFO ]: Analyzing trace with hash -1748938870, now seen corresponding path program 1 times [2018-06-26 18:17:04,207 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:04,207 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:04,208 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:04,208 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:04,208 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:04,260 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:04,383 INFO ]: Checked inductivity of 13 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-26 18:17:04,383 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:17:04,383 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:17:04,393 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:04,436 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:04,443 INFO ]: Computing forward predicates... [2018-06-26 18:17:04,556 INFO ]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-26 18:17:04,589 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:17:04,589 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-06-26 18:17:04,589 INFO ]: Interpolant automaton has 9 states [2018-06-26 18:17:04,589 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-26 18:17:04,589 INFO ]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-06-26 18:17:04,590 INFO ]: Start difference. First operand 74 states and 133 transitions. Second operand 9 states. [2018-06-26 18:17:06,011 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:06,011 INFO ]: Finished difference Result 156 states and 380 transitions. [2018-06-26 18:17:06,012 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-26 18:17:06,012 INFO ]: Start accepts. Automaton has 9 states. Word has length 18 [2018-06-26 18:17:06,012 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:06,017 INFO ]: With dead ends: 156 [2018-06-26 18:17:06,017 INFO ]: Without dead ends: 116 [2018-06-26 18:17:06,018 INFO ]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2018-06-26 18:17:06,018 INFO ]: Start minimizeSevpa. Operand 116 states. [2018-06-26 18:17:06,042 INFO ]: Finished minimizeSevpa. Reduced states from 116 to 68. [2018-06-26 18:17:06,042 INFO ]: Start removeUnreachable. Operand 68 states. [2018-06-26 18:17:06,045 INFO ]: Finished removeUnreachable. Reduced from 68 states to 68 states and 123 transitions. [2018-06-26 18:17:06,045 INFO ]: Start accepts. Automaton has 68 states and 123 transitions. Word has length 18 [2018-06-26 18:17:06,045 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:06,045 INFO ]: Abstraction has 68 states and 123 transitions. [2018-06-26 18:17:06,045 INFO ]: Interpolant automaton has 9 states. [2018-06-26 18:17:06,045 INFO ]: Start isEmpty. Operand 68 states and 123 transitions. [2018-06-26 18:17:06,048 INFO ]: Finished isEmpty. Found accepting run of length 23 [2018-06-26 18:17:06,048 INFO ]: Found error trace [2018-06-26 18:17:06,048 INFO ]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:17:06,048 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:06,049 INFO ]: Analyzing trace with hash -749237075, now seen corresponding path program 1 times [2018-06-26 18:17:06,049 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:06,049 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:06,049 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:06,050 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:06,050 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:06,077 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:06,130 INFO ]: Checked inductivity of 21 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-26 18:17:06,130 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:17:06,130 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 [2018-06-26 18:17:06,138 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:06,188 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:06,191 INFO ]: Computing forward predicates... [2018-06-26 18:17:06,278 INFO ]: Checked inductivity of 21 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-26 18:17:06,299 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:17:06,341 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5] total 6 [2018-06-26 18:17:06,341 INFO ]: Interpolant automaton has 6 states [2018-06-26 18:17:06,341 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 18:17:06,341 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:17:06,342 INFO ]: Start difference. First operand 68 states and 123 transitions. Second operand 6 states. [2018-06-26 18:17:06,744 WARN ]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-26 18:17:07,875 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:07,875 INFO ]: Finished difference Result 128 states and 281 transitions. [2018-06-26 18:17:07,875 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-26 18:17:07,875 INFO ]: Start accepts. Automaton has 6 states. Word has length 22 [2018-06-26 18:17:07,876 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:07,879 INFO ]: With dead ends: 128 [2018-06-26 18:17:07,879 INFO ]: Without dead ends: 128 [2018-06-26 18:17:07,879 INFO ]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-06-26 18:17:07,879 INFO ]: Start minimizeSevpa. Operand 128 states. [2018-06-26 18:17:07,894 INFO ]: Finished minimizeSevpa. Reduced states from 128 to 79. [2018-06-26 18:17:07,894 INFO ]: Start removeUnreachable. Operand 79 states. [2018-06-26 18:17:07,895 INFO ]: Finished removeUnreachable. Reduced from 79 states to 79 states and 143 transitions. [2018-06-26 18:17:07,895 INFO ]: Start accepts. Automaton has 79 states and 143 transitions. Word has length 22 [2018-06-26 18:17:07,896 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:07,896 INFO ]: Abstraction has 79 states and 143 transitions. [2018-06-26 18:17:07,896 INFO ]: Interpolant automaton has 6 states. [2018-06-26 18:17:07,896 INFO ]: Start isEmpty. Operand 79 states and 143 transitions. [2018-06-26 18:17:07,900 INFO ]: Finished isEmpty. Found accepting run of length 33 [2018-06-26 18:17:07,900 INFO ]: Found error trace [2018-06-26 18:17:07,900 INFO ]: trace histogram [6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:17:07,900 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:07,900 INFO ]: Analyzing trace with hash -1119214886, now seen corresponding path program 1 times [2018-06-26 18:17:07,900 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:07,900 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:07,901 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:07,901 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:07,901 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:07,936 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:08,085 INFO ]: Checked inductivity of 50 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-26 18:17:08,086 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:17:08,086 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 [2018-06-26 18:17:08,097 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:08,156 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:08,159 INFO ]: Computing forward predicates... [2018-06-26 18:17:08,213 INFO ]: Checked inductivity of 50 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-06-26 18:17:08,242 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:17:08,242 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-26 18:17:08,242 INFO ]: Interpolant automaton has 12 states [2018-06-26 18:17:08,242 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-26 18:17:08,242 INFO ]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-06-26 18:17:08,243 INFO ]: Start difference. First operand 79 states and 143 transitions. Second operand 12 states. [2018-06-26 18:17:09,209 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:09,209 INFO ]: Finished difference Result 157 states and 405 transitions. [2018-06-26 18:17:09,209 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-26 18:17:09,209 INFO ]: Start accepts. Automaton has 12 states. Word has length 32 [2018-06-26 18:17:09,210 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:09,216 INFO ]: With dead ends: 157 [2018-06-26 18:17:09,216 INFO ]: Without dead ends: 157 [2018-06-26 18:17:09,217 INFO ]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2018-06-26 18:17:09,217 INFO ]: Start minimizeSevpa. Operand 157 states. [2018-06-26 18:17:09,249 INFO ]: Finished minimizeSevpa. Reduced states from 157 to 112. [2018-06-26 18:17:09,249 INFO ]: Start removeUnreachable. Operand 112 states. [2018-06-26 18:17:09,253 INFO ]: Finished removeUnreachable. Reduced from 112 states to 112 states and 254 transitions. [2018-06-26 18:17:09,253 INFO ]: Start accepts. Automaton has 112 states and 254 transitions. Word has length 32 [2018-06-26 18:17:09,253 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:09,253 INFO ]: Abstraction has 112 states and 254 transitions. [2018-06-26 18:17:09,253 INFO ]: Interpolant automaton has 12 states. [2018-06-26 18:17:09,253 INFO ]: Start isEmpty. Operand 112 states and 254 transitions. [2018-06-26 18:17:09,261 INFO ]: Finished isEmpty. Found accepting run of length 33 [2018-06-26 18:17:09,261 INFO ]: Found error trace [2018-06-26 18:17:09,261 INFO ]: trace histogram [6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:17:09,261 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:09,261 INFO ]: Analyzing trace with hash -768414949, now seen corresponding path program 1 times [2018-06-26 18:17:09,261 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:09,261 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:09,262 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:09,262 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:09,262 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:09,316 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:09,521 INFO ]: Checked inductivity of 50 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-26 18:17:09,521 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:17:09,521 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 [2018-06-26 18:17:09,527 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:09,587 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:09,592 INFO ]: Computing forward predicates... [2018-06-26 18:17:09,789 INFO ]: Checked inductivity of 50 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-06-26 18:17:09,809 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:17:09,809 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-06-26 18:17:09,809 INFO ]: Interpolant automaton has 7 states [2018-06-26 18:17:09,809 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-26 18:17:09,809 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-26 18:17:09,810 INFO ]: Start difference. First operand 112 states and 254 transitions. Second operand 7 states. [2018-06-26 18:17:10,398 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:10,398 INFO ]: Finished difference Result 160 states and 411 transitions. [2018-06-26 18:17:10,398 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-26 18:17:10,399 INFO ]: Start accepts. Automaton has 7 states. Word has length 32 [2018-06-26 18:17:10,399 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:10,404 INFO ]: With dead ends: 160 [2018-06-26 18:17:10,404 INFO ]: Without dead ends: 160 [2018-06-26 18:17:10,404 INFO ]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-06-26 18:17:10,404 INFO ]: Start minimizeSevpa. Operand 160 states. [2018-06-26 18:17:10,444 INFO ]: Finished minimizeSevpa. Reduced states from 160 to 112. [2018-06-26 18:17:10,444 INFO ]: Start removeUnreachable. Operand 112 states. [2018-06-26 18:17:10,447 INFO ]: Finished removeUnreachable. Reduced from 112 states to 112 states and 252 transitions. [2018-06-26 18:17:10,447 INFO ]: Start accepts. Automaton has 112 states and 252 transitions. Word has length 32 [2018-06-26 18:17:10,448 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:10,448 INFO ]: Abstraction has 112 states and 252 transitions. [2018-06-26 18:17:10,448 INFO ]: Interpolant automaton has 7 states. [2018-06-26 18:17:10,448 INFO ]: Start isEmpty. Operand 112 states and 252 transitions. [2018-06-26 18:17:10,454 INFO ]: Finished isEmpty. Found accepting run of length 33 [2018-06-26 18:17:10,454 INFO ]: Found error trace [2018-06-26 18:17:10,454 INFO ]: trace histogram [6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:17:10,454 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:10,454 INFO ]: Analyzing trace with hash 287926927, now seen corresponding path program 1 times [2018-06-26 18:17:10,454 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:10,454 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:10,455 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:10,455 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:10,455 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:10,478 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:10,543 INFO ]: Checked inductivity of 50 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-06-26 18:17:10,543 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:17:10,543 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 [2018-06-26 18:17:10,557 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:10,603 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:10,606 INFO ]: Computing forward predicates... [2018-06-26 18:17:10,631 INFO ]: Checked inductivity of 50 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-06-26 18:17:10,652 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:17:10,652 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2018-06-26 18:17:10,652 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:17:10,652 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:17:10,652 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:17:10,652 INFO ]: Start difference. First operand 112 states and 252 transitions. Second operand 3 states. [2018-06-26 18:17:10,720 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:10,720 INFO ]: Finished difference Result 128 states and 281 transitions. [2018-06-26 18:17:10,720 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:17:10,720 INFO ]: Start accepts. Automaton has 3 states. Word has length 32 [2018-06-26 18:17:10,720 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:10,722 INFO ]: With dead ends: 128 [2018-06-26 18:17:10,722 INFO ]: Without dead ends: 128 [2018-06-26 18:17:10,723 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:17:10,723 INFO ]: Start minimizeSevpa. Operand 128 states. [2018-06-26 18:17:10,737 INFO ]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-06-26 18:17:10,737 INFO ]: Start removeUnreachable. Operand 128 states. [2018-06-26 18:17:10,740 INFO ]: Finished removeUnreachable. Reduced from 128 states to 128 states and 281 transitions. [2018-06-26 18:17:10,740 INFO ]: Start accepts. Automaton has 128 states and 281 transitions. Word has length 32 [2018-06-26 18:17:10,740 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:10,740 INFO ]: Abstraction has 128 states and 281 transitions. [2018-06-26 18:17:10,740 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:17:10,740 INFO ]: Start isEmpty. Operand 128 states and 281 transitions. [2018-06-26 18:17:10,748 INFO ]: Finished isEmpty. Found accepting run of length 57 [2018-06-26 18:17:10,748 INFO ]: Found error trace [2018-06-26 18:17:10,748 INFO ]: trace histogram [10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:17:10,748 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:10,748 INFO ]: Analyzing trace with hash -530345696, now seen corresponding path program 1 times [2018-06-26 18:17:10,748 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:10,748 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:10,749 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:10,749 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:10,749 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:10,784 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:10,972 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-06-26 18:17:11,079 INFO ]: Checked inductivity of 180 backedges. 79 proven. 22 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-06-26 18:17:11,079 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:17:11,079 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 [2018-06-26 18:17:11,085 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:11,182 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:11,187 INFO ]: Computing forward predicates... [2018-06-26 18:17:11,435 INFO ]: Checked inductivity of 180 backedges. 71 proven. 42 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-06-26 18:17:11,454 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:17:11,454 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 19 [2018-06-26 18:17:11,455 INFO ]: Interpolant automaton has 19 states [2018-06-26 18:17:11,455 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-26 18:17:11,455 INFO ]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2018-06-26 18:17:11,455 INFO ]: Start difference. First operand 128 states and 281 transitions. Second operand 19 states. [2018-06-26 18:17:14,036 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:14,036 INFO ]: Finished difference Result 253 states and 710 transitions. [2018-06-26 18:17:14,036 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-06-26 18:17:14,036 INFO ]: Start accepts. Automaton has 19 states. Word has length 56 [2018-06-26 18:17:14,037 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:14,043 INFO ]: With dead ends: 253 [2018-06-26 18:17:14,043 INFO ]: Without dead ends: 253 [2018-06-26 18:17:14,044 INFO ]: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=267, Invalid=1713, Unknown=0, NotChecked=0, Total=1980 [2018-06-26 18:17:14,044 INFO ]: Start minimizeSevpa. Operand 253 states. [2018-06-26 18:17:14,085 INFO ]: Finished minimizeSevpa. Reduced states from 253 to 147. [2018-06-26 18:17:14,085 INFO ]: Start removeUnreachable. Operand 147 states. [2018-06-26 18:17:14,089 INFO ]: Finished removeUnreachable. Reduced from 147 states to 147 states and 363 transitions. [2018-06-26 18:17:14,089 INFO ]: Start accepts. Automaton has 147 states and 363 transitions. Word has length 56 [2018-06-26 18:17:14,090 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:14,090 INFO ]: Abstraction has 147 states and 363 transitions. [2018-06-26 18:17:14,090 INFO ]: Interpolant automaton has 19 states. [2018-06-26 18:17:14,090 INFO ]: Start isEmpty. Operand 147 states and 363 transitions. [2018-06-26 18:17:14,098 INFO ]: Finished isEmpty. Found accepting run of length 48 [2018-06-26 18:17:14,098 INFO ]: Found error trace [2018-06-26 18:17:14,098 INFO ]: trace histogram [9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:17:14,098 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:14,098 INFO ]: Analyzing trace with hash -1596951471, now seen corresponding path program 1 times [2018-06-26 18:17:14,098 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:14,098 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:14,099 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:14,099 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:14,099 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:14,114 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:14,198 INFO ]: Checked inductivity of 123 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-06-26 18:17:14,198 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:17:14,198 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 [2018-06-26 18:17:14,206 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:14,262 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:14,266 INFO ]: Computing forward predicates... [2018-06-26 18:17:14,273 INFO ]: Checked inductivity of 123 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-06-26 18:17:14,293 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:17:14,293 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2018-06-26 18:17:14,293 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:17:14,294 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:17:14,294 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:17:14,294 INFO ]: Start difference. First operand 147 states and 363 transitions. Second operand 3 states. [2018-06-26 18:17:14,379 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:14,379 INFO ]: Finished difference Result 163 states and 402 transitions. [2018-06-26 18:17:14,379 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:17:14,379 INFO ]: Start accepts. Automaton has 3 states. Word has length 47 [2018-06-26 18:17:14,380 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:14,384 INFO ]: With dead ends: 163 [2018-06-26 18:17:14,384 INFO ]: Without dead ends: 163 [2018-06-26 18:17:14,385 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:17:14,385 INFO ]: Start minimizeSevpa. Operand 163 states. [2018-06-26 18:17:14,409 INFO ]: Finished minimizeSevpa. Reduced states from 163 to 157. [2018-06-26 18:17:14,409 INFO ]: Start removeUnreachable. Operand 157 states. [2018-06-26 18:17:14,414 INFO ]: Finished removeUnreachable. Reduced from 157 states to 157 states and 376 transitions. [2018-06-26 18:17:14,414 INFO ]: Start accepts. Automaton has 157 states and 376 transitions. Word has length 47 [2018-06-26 18:17:14,414 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:14,414 INFO ]: Abstraction has 157 states and 376 transitions. [2018-06-26 18:17:14,414 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:17:14,414 INFO ]: Start isEmpty. Operand 157 states and 376 transitions. [2018-06-26 18:17:14,423 INFO ]: Finished isEmpty. Found accepting run of length 63 [2018-06-26 18:17:14,423 INFO ]: Found error trace [2018-06-26 18:17:14,423 INFO ]: trace histogram [12, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:17:14,423 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:14,424 INFO ]: Analyzing trace with hash 1709864110, now seen corresponding path program 1 times [2018-06-26 18:17:14,424 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:14,424 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:14,425 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:14,425 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:14,425 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:14,443 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:14,548 INFO ]: Checked inductivity of 223 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2018-06-26 18:17:14,548 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:17:14,548 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 [2018-06-26 18:17:14,562 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:14,659 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:14,663 INFO ]: Computing forward predicates... [2018-06-26 18:17:14,694 INFO ]: Checked inductivity of 223 backedges. 82 proven. 19 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-06-26 18:17:14,713 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:17:14,713 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6] total 7 [2018-06-26 18:17:14,714 INFO ]: Interpolant automaton has 7 states [2018-06-26 18:17:14,714 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-26 18:17:14,714 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-26 18:17:14,714 INFO ]: Start difference. First operand 157 states and 376 transitions. Second operand 7 states. [2018-06-26 18:17:15,258 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:15,258 INFO ]: Finished difference Result 221 states and 543 transitions. [2018-06-26 18:17:15,258 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-26 18:17:15,259 INFO ]: Start accepts. Automaton has 7 states. Word has length 62 [2018-06-26 18:17:15,259 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:15,266 INFO ]: With dead ends: 221 [2018-06-26 18:17:15,266 INFO ]: Without dead ends: 221 [2018-06-26 18:17:15,266 INFO ]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-06-26 18:17:15,266 INFO ]: Start minimizeSevpa. Operand 221 states. [2018-06-26 18:17:15,304 INFO ]: Finished minimizeSevpa. Reduced states from 221 to 193. [2018-06-26 18:17:15,304 INFO ]: Start removeUnreachable. Operand 193 states. [2018-06-26 18:17:15,309 INFO ]: Finished removeUnreachable. Reduced from 193 states to 193 states and 477 transitions. [2018-06-26 18:17:15,309 INFO ]: Start accepts. Automaton has 193 states and 477 transitions. Word has length 62 [2018-06-26 18:17:15,309 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:15,309 INFO ]: Abstraction has 193 states and 477 transitions. [2018-06-26 18:17:15,309 INFO ]: Interpolant automaton has 7 states. [2018-06-26 18:17:15,309 INFO ]: Start isEmpty. Operand 193 states and 477 transitions. [2018-06-26 18:17:15,319 INFO ]: Finished isEmpty. Found accepting run of length 108 [2018-06-26 18:17:15,319 INFO ]: Found error trace [2018-06-26 18:17:15,319 INFO ]: trace histogram [20, 8, 8, 7, 7, 7, 7, 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] [2018-06-26 18:17:15,319 INFO ]: === Iteration 13 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:15,319 INFO ]: Analyzing trace with hash -460422806, now seen corresponding path program 1 times [2018-06-26 18:17:15,319 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:15,319 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:15,320 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:15,320 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:15,320 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:15,348 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:15,505 INFO ]: Checked inductivity of 696 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2018-06-26 18:17:15,505 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:17:15,505 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) [2018-06-26 18:17:15,520 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:17:15,697 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:15,704 INFO ]: Computing forward predicates... [2018-06-26 18:17:15,729 INFO ]: Checked inductivity of 696 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-06-26 18:17:15,764 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:17:15,764 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2018-06-26 18:17:15,764 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:17:15,765 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:17:15,765 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:17:15,765 INFO ]: Start difference. First operand 193 states and 477 transitions. Second operand 3 states. [2018-06-26 18:17:15,916 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:15,916 INFO ]: Finished difference Result 210 states and 486 transitions. [2018-06-26 18:17:15,916 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:17:15,916 INFO ]: Start accepts. Automaton has 3 states. Word has length 107 [2018-06-26 18:17:15,917 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:15,921 INFO ]: With dead ends: 210 [2018-06-26 18:17:15,921 INFO ]: Without dead ends: 210 [2018-06-26 18:17:15,925 INFO ]: 0 DeclaredPredicates, 109 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:17:15,925 INFO ]: Start minimizeSevpa. Operand 210 states. [2018-06-26 18:17:15,945 INFO ]: Finished minimizeSevpa. Reduced states from 210 to 192. [2018-06-26 18:17:15,945 INFO ]: Start removeUnreachable. Operand 192 states. [2018-06-26 18:17:15,950 INFO ]: Finished removeUnreachable. Reduced from 192 states to 192 states and 438 transitions. [2018-06-26 18:17:15,950 INFO ]: Start accepts. Automaton has 192 states and 438 transitions. Word has length 107 [2018-06-26 18:17:15,950 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:15,950 INFO ]: Abstraction has 192 states and 438 transitions. [2018-06-26 18:17:15,950 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:17:15,950 INFO ]: Start isEmpty. Operand 192 states and 438 transitions. [2018-06-26 18:17:15,957 INFO ]: Finished isEmpty. Found accepting run of length 162 [2018-06-26 18:17:15,957 INFO ]: Found error trace [2018-06-26 18:17:15,957 INFO ]: trace histogram [31, 11, 11, 11, 11, 11, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-06-26 18:17:15,957 INFO ]: === Iteration 14 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:15,959 INFO ]: Analyzing trace with hash 2058240823, now seen corresponding path program 1 times [2018-06-26 18:17:15,959 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:15,959 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:15,959 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:15,959 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:15,960 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:15,981 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:16,137 INFO ]: Checked inductivity of 1623 backedges. 182 proven. 53 refuted. 0 times theorem prover too weak. 1388 trivial. 0 not checked. [2018-06-26 18:17:16,137 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:17:16,137 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 [2018-06-26 18:17:16,147 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:16,391 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:16,400 INFO ]: Computing forward predicates... [2018-06-26 18:17:16,472 INFO ]: Checked inductivity of 1623 backedges. 276 proven. 112 refuted. 0 times theorem prover too weak. 1235 trivial. 0 not checked. [2018-06-26 18:17:16,493 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:17:16,561 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 8] total 9 [2018-06-26 18:17:16,561 INFO ]: Interpolant automaton has 9 states [2018-06-26 18:17:16,561 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-26 18:17:16,561 INFO ]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-06-26 18:17:16,561 INFO ]: Start difference. First operand 192 states and 438 transitions. Second operand 9 states. [2018-06-26 18:17:17,081 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:17,081 INFO ]: Finished difference Result 261 states and 629 transitions. [2018-06-26 18:17:17,081 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-26 18:17:17,081 INFO ]: Start accepts. Automaton has 9 states. Word has length 161 [2018-06-26 18:17:17,082 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:17,086 INFO ]: With dead ends: 261 [2018-06-26 18:17:17,086 INFO ]: Without dead ends: 261 [2018-06-26 18:17:17,086 INFO ]: 0 DeclaredPredicates, 177 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-06-26 18:17:17,086 INFO ]: Start minimizeSevpa. Operand 261 states. [2018-06-26 18:17:17,117 INFO ]: Finished minimizeSevpa. Reduced states from 261 to 206. [2018-06-26 18:17:17,117 INFO ]: Start removeUnreachable. Operand 206 states. [2018-06-26 18:17:17,126 INFO ]: Finished removeUnreachable. Reduced from 206 states to 206 states and 465 transitions. [2018-06-26 18:17:17,126 INFO ]: Start accepts. Automaton has 206 states and 465 transitions. Word has length 161 [2018-06-26 18:17:17,131 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:17,131 INFO ]: Abstraction has 206 states and 465 transitions. [2018-06-26 18:17:17,131 INFO ]: Interpolant automaton has 9 states. [2018-06-26 18:17:17,131 INFO ]: Start isEmpty. Operand 206 states and 465 transitions. [2018-06-26 18:17:17,143 INFO ]: Finished isEmpty. Found accepting run of length 326 [2018-06-26 18:17:17,143 INFO ]: Found error trace [2018-06-26 18:17:17,143 INFO ]: trace histogram [63, 23, 23, 21, 21, 21, 21, 9, 9, 9, 7, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-06-26 18:17:17,143 INFO ]: === Iteration 15 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:17,144 INFO ]: Analyzing trace with hash 1049489354, now seen corresponding path program 1 times [2018-06-26 18:17:17,144 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:17,144 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:17,144 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:17,144 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:17,144 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:17,215 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:17,560 INFO ]: Checked inductivity of 6800 backedges. 504 proven. 299 refuted. 0 times theorem prover too weak. 5997 trivial. 0 not checked. [2018-06-26 18:17:17,560 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:17:17,560 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) [2018-06-26 18:17:17,570 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:17:18,112 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:18,137 INFO ]: Computing forward predicates... [2018-06-26 18:17:18,348 INFO ]: Checked inductivity of 6800 backedges. 630 proven. 670 refuted. 0 times theorem prover too weak. 5500 trivial. 0 not checked. [2018-06-26 18:17:18,370 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:17:18,370 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 12] total 13 [2018-06-26 18:17:18,371 INFO ]: Interpolant automaton has 13 states [2018-06-26 18:17:18,371 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-26 18:17:18,371 INFO ]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-06-26 18:17:18,371 INFO ]: Start difference. First operand 206 states and 465 transitions. Second operand 13 states. [2018-06-26 18:17:20,535 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:20,535 INFO ]: Finished difference Result 397 states and 1090 transitions. [2018-06-26 18:17:20,535 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-06-26 18:17:20,536 INFO ]: Start accepts. Automaton has 13 states. Word has length 325 [2018-06-26 18:17:20,536 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:20,541 INFO ]: With dead ends: 397 [2018-06-26 18:17:20,541 INFO ]: Without dead ends: 397 [2018-06-26 18:17:20,541 INFO ]: 0 DeclaredPredicates, 361 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=217, Invalid=1343, Unknown=0, NotChecked=0, Total=1560 [2018-06-26 18:17:20,542 INFO ]: Start minimizeSevpa. Operand 397 states. [2018-06-26 18:17:20,589 INFO ]: Finished minimizeSevpa. Reduced states from 397 to 285. [2018-06-26 18:17:20,589 INFO ]: Start removeUnreachable. Operand 285 states. [2018-06-26 18:17:20,593 INFO ]: Finished removeUnreachable. Reduced from 285 states to 285 states and 649 transitions. [2018-06-26 18:17:20,593 INFO ]: Start accepts. Automaton has 285 states and 649 transitions. Word has length 325 [2018-06-26 18:17:20,595 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:20,595 INFO ]: Abstraction has 285 states and 649 transitions. [2018-06-26 18:17:20,595 INFO ]: Interpolant automaton has 13 states. [2018-06-26 18:17:20,595 INFO ]: Start isEmpty. Operand 285 states and 649 transitions. [2018-06-26 18:17:20,608 INFO ]: Finished isEmpty. Found accepting run of length 314 [2018-06-26 18:17:20,608 INFO ]: Found error trace [2018-06-26 18:17:20,609 INFO ]: trace histogram [61, 22, 22, 20, 20, 20, 20, 9, 9, 9, 7, 5, 5, 5, 5, 5, 3, 3, 3, 3, 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] [2018-06-26 18:17:20,609 INFO ]: === Iteration 16 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:20,609 INFO ]: Analyzing trace with hash -1759972678, now seen corresponding path program 1 times [2018-06-26 18:17:20,609 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:20,609 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:20,609 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:20,609 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:20,609 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:20,648 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:21,384 INFO ]: Checked inductivity of 6300 backedges. 420 proven. 723 refuted. 0 times theorem prover too weak. 5157 trivial. 0 not checked. [2018-06-26 18:17:21,384 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:17:21,384 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 [2018-06-26 18:17:21,390 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:21,797 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:21,817 INFO ]: Computing forward predicates... [2018-06-26 18:17:22,189 INFO ]: Checked inductivity of 6300 backedges. 600 proven. 772 refuted. 0 times theorem prover too weak. 4928 trivial. 0 not checked. [2018-06-26 18:17:22,210 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:17:22,210 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17] total 25 [2018-06-26 18:17:22,211 INFO ]: Interpolant automaton has 25 states [2018-06-26 18:17:22,211 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-26 18:17:22,211 INFO ]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2018-06-26 18:17:22,211 INFO ]: Start difference. First operand 285 states and 649 transitions. Second operand 25 states. [2018-06-26 18:17:25,623 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:25,623 INFO ]: Finished difference Result 547 states and 1598 transitions. [2018-06-26 18:17:25,623 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-06-26 18:17:25,623 INFO ]: Start accepts. Automaton has 25 states. Word has length 313 [2018-06-26 18:17:25,624 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:25,632 INFO ]: With dead ends: 547 [2018-06-26 18:17:25,633 INFO ]: Without dead ends: 547 [2018-06-26 18:17:25,633 INFO ]: 0 DeclaredPredicates, 375 GetRequests, 310 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=447, Invalid=3459, Unknown=0, NotChecked=0, Total=3906 [2018-06-26 18:17:25,634 INFO ]: Start minimizeSevpa. Operand 547 states. [2018-06-26 18:17:25,700 INFO ]: Finished minimizeSevpa. Reduced states from 547 to 357. [2018-06-26 18:17:25,701 INFO ]: Start removeUnreachable. Operand 357 states. [2018-06-26 18:17:25,707 INFO ]: Finished removeUnreachable. Reduced from 357 states to 357 states and 837 transitions. [2018-06-26 18:17:25,707 INFO ]: Start accepts. Automaton has 357 states and 837 transitions. Word has length 313 [2018-06-26 18:17:25,707 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:25,707 INFO ]: Abstraction has 357 states and 837 transitions. [2018-06-26 18:17:25,708 INFO ]: Interpolant automaton has 25 states. [2018-06-26 18:17:25,708 INFO ]: Start isEmpty. Operand 357 states and 837 transitions. [2018-06-26 18:17:25,731 INFO ]: Finished isEmpty. Found accepting run of length 482 [2018-06-26 18:17:25,731 INFO ]: Found error trace [2018-06-26 18:17:25,732 INFO ]: trace histogram [89, 36, 36, 34, 34, 34, 34, 15, 15, 15, 15, 9, 9, 9, 7, 5, 5, 5, 5, 5, 3, 3, 3, 3, 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] [2018-06-26 18:17:25,732 INFO ]: === Iteration 17 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:25,732 INFO ]: Analyzing trace with hash 578181478, now seen corresponding path program 2 times [2018-06-26 18:17:25,732 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:25,732 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:25,732 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:25,732 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:25,733 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:25,802 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:26,245 INFO ]: Checked inductivity of 15302 backedges. 741 proven. 1170 refuted. 0 times theorem prover too weak. 13391 trivial. 0 not checked. [2018-06-26 18:17:26,245 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:17:26,245 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) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:17:26,251 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-26 18:17:26,936 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-26 18:17:26,936 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:26,978 INFO ]: Computing forward predicates... [2018-06-26 18:17:28,801 INFO ]: Checked inductivity of 15302 backedges. 977 proven. 1596 refuted. 0 times theorem prover too weak. 12729 trivial. 0 not checked. [2018-06-26 18:17:28,824 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:17:28,825 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 31 [2018-06-26 18:17:28,825 INFO ]: Interpolant automaton has 31 states [2018-06-26 18:17:28,825 INFO ]: Constructing interpolant automaton starting with 31 interpolants. [2018-06-26 18:17:28,825 INFO ]: CoverageRelationStatistics Valid=75, Invalid=855, Unknown=0, NotChecked=0, Total=930 [2018-06-26 18:17:28,825 INFO ]: Start difference. First operand 357 states and 837 transitions. Second operand 31 states. [2018-06-26 18:17:30,167 WARN ]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-26 18:17:36,728 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:36,728 INFO ]: Finished difference Result 669 states and 1988 transitions. [2018-06-26 18:17:36,728 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-06-26 18:17:36,728 INFO ]: Start accepts. Automaton has 31 states. Word has length 481 [2018-06-26 18:17:36,729 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:36,743 INFO ]: With dead ends: 669 [2018-06-26 18:17:36,744 INFO ]: Without dead ends: 668 [2018-06-26 18:17:36,746 INFO ]: 0 DeclaredPredicates, 581 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2876 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=990, Invalid=9722, Unknown=0, NotChecked=0, Total=10712 [2018-06-26 18:17:36,746 INFO ]: Start minimizeSevpa. Operand 668 states. [2018-06-26 18:17:36,830 INFO ]: Finished minimizeSevpa. Reduced states from 668 to 393. [2018-06-26 18:17:36,830 INFO ]: Start removeUnreachable. Operand 393 states. [2018-06-26 18:17:36,838 INFO ]: Finished removeUnreachable. Reduced from 393 states to 393 states and 915 transitions. [2018-06-26 18:17:36,838 INFO ]: Start accepts. Automaton has 393 states and 915 transitions. Word has length 481 [2018-06-26 18:17:36,839 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:36,839 INFO ]: Abstraction has 393 states and 915 transitions. [2018-06-26 18:17:36,839 INFO ]: Interpolant automaton has 31 states. [2018-06-26 18:17:36,839 INFO ]: Start isEmpty. Operand 393 states and 915 transitions. [2018-06-26 18:17:36,861 INFO ]: Finished isEmpty. Found accepting run of length 437 [2018-06-26 18:17:36,861 INFO ]: Found error trace [2018-06-26 18:17:36,861 INFO ]: trace histogram [84, 31, 31, 29, 29, 29, 29, 11, 11, 11, 9, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-06-26 18:17:36,861 INFO ]: === Iteration 18 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:36,861 INFO ]: Analyzing trace with hash -1792144769, now seen corresponding path program 2 times [2018-06-26 18:17:36,861 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:36,861 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:36,862 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:36,862 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-26 18:17:36,862 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:37,085 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:37,435 INFO ]: Checked inductivity of 12401 backedges. 864 proven. 277 refuted. 0 times theorem prover too weak. 11260 trivial. 0 not checked. [2018-06-26 18:17:37,435 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:17:37,435 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) [2018-06-26 18:17:37,444 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:17:37,990 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-26 18:17:37,990 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:38,013 INFO ]: Computing forward predicates... [2018-06-26 18:17:38,305 INFO ]: Checked inductivity of 12401 backedges. 989 proven. 1095 refuted. 0 times theorem prover too weak. 10317 trivial. 0 not checked. [2018-06-26 18:17:38,329 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:17:38,329 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 14] total 15 [2018-06-26 18:17:38,330 INFO ]: Interpolant automaton has 15 states [2018-06-26 18:17:38,330 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-26 18:17:38,330 INFO ]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2018-06-26 18:17:38,330 INFO ]: Start difference. First operand 393 states and 915 transitions. Second operand 15 states. [2018-06-26 18:17:40,361 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:40,361 INFO ]: Finished difference Result 653 states and 1881 transitions. [2018-06-26 18:17:40,362 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-06-26 18:17:40,362 INFO ]: Start accepts. Automaton has 15 states. Word has length 436 [2018-06-26 18:17:40,362 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:40,371 INFO ]: With dead ends: 653 [2018-06-26 18:17:40,371 INFO ]: Without dead ends: 653 [2018-06-26 18:17:40,372 INFO ]: 0 DeclaredPredicates, 473 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=274, Invalid=1618, Unknown=0, NotChecked=0, Total=1892 [2018-06-26 18:17:40,372 INFO ]: Start minimizeSevpa. Operand 653 states. [2018-06-26 18:17:40,435 INFO ]: Finished minimizeSevpa. Reduced states from 653 to 458. [2018-06-26 18:17:40,435 INFO ]: Start removeUnreachable. Operand 458 states. [2018-06-26 18:17:40,442 INFO ]: Finished removeUnreachable. Reduced from 458 states to 458 states and 1087 transitions. [2018-06-26 18:17:40,442 INFO ]: Start accepts. Automaton has 458 states and 1087 transitions. Word has length 436 [2018-06-26 18:17:40,443 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:40,443 INFO ]: Abstraction has 458 states and 1087 transitions. [2018-06-26 18:17:40,443 INFO ]: Interpolant automaton has 15 states. [2018-06-26 18:17:40,443 INFO ]: Start isEmpty. Operand 458 states and 1087 transitions. [2018-06-26 18:17:40,458 INFO ]: Finished isEmpty. Found accepting run of length 383 [2018-06-26 18:17:40,458 INFO ]: Found error trace [2018-06-26 18:17:40,458 INFO ]: trace histogram [70, 29, 29, 27, 27, 27, 27, 13, 13, 13, 13, 7, 7, 7, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:17:40,459 INFO ]: === Iteration 19 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:17:40,459 INFO ]: Analyzing trace with hash 1124807958, now seen corresponding path program 1 times [2018-06-26 18:17:40,459 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:17:40,459 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:17:40,459 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:40,459 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-26 18:17:40,459 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:17:40,551 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:40,896 INFO ]: Checked inductivity of 9592 backedges. 670 proven. 650 refuted. 0 times theorem prover too weak. 8272 trivial. 0 not checked. [2018-06-26 18:17:40,896 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:17:40,896 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 [2018-06-26 18:17:40,912 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:17:41,436 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:17:41,457 INFO ]: Computing forward predicates... [2018-06-26 18:17:41,829 INFO ]: Checked inductivity of 9592 backedges. 897 proven. 539 refuted. 0 times theorem prover too weak. 8156 trivial. 0 not checked. [2018-06-26 18:17:41,865 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:17:41,865 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2018-06-26 18:17:41,866 INFO ]: Interpolant automaton has 19 states [2018-06-26 18:17:41,866 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-26 18:17:41,866 INFO ]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-06-26 18:17:41,866 INFO ]: Start difference. First operand 458 states and 1087 transitions. Second operand 19 states. [2018-06-26 18:17:42,443 WARN ]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-26 18:17:43,894 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:17:43,894 INFO ]: Finished difference Result 397 states and 799 transitions. [2018-06-26 18:17:43,895 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-06-26 18:17:43,895 INFO ]: Start accepts. Automaton has 19 states. Word has length 382 [2018-06-26 18:17:43,895 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:17:43,895 INFO ]: With dead ends: 397 [2018-06-26 18:17:43,895 INFO ]: Without dead ends: 0 [2018-06-26 18:17:43,896 INFO ]: 0 DeclaredPredicates, 439 GetRequests, 385 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=335, Invalid=2421, Unknown=0, NotChecked=0, Total=2756 [2018-06-26 18:17:43,896 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:17:43,896 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:17:43,896 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:17:43,896 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:17:43,896 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 382 [2018-06-26 18:17:43,896 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:17:43,896 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:17:43,896 INFO ]: Interpolant automaton has 19 states. [2018-06-26 18:17:43,896 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:17:43,896 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:17:43,899 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:17:43,900 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:17:43 BasicIcfg [2018-06-26 18:17:43,900 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:17:43,901 INFO ]: Toolchain (without parser) took 43563.94 ms. Allocated memory was 309.3 MB in the beginning and 1.2 GB in the end (delta: 853.5 MB). Free memory was 257.8 MB in the beginning and 499.5 MB in the end (delta: -241.7 MB). Peak memory consumption was 611.9 MB. Max. memory is 3.6 GB. [2018-06-26 18:17:43,902 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:17:43,902 INFO ]: ChcToBoogie took 75.51 ms. Allocated memory is still 309.3 MB. Free memory was 257.8 MB in the beginning and 254.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:17:43,902 INFO ]: Boogie Preprocessor took 50.32 ms. Allocated memory is still 309.3 MB. Free memory was 254.8 MB in the beginning and 252.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:17:43,903 INFO ]: RCFGBuilder took 761.70 ms. Allocated memory is still 309.3 MB. Free memory was 252.8 MB in the beginning and 227.8 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 3.6 GB. [2018-06-26 18:17:43,903 INFO ]: BlockEncodingV2 took 557.29 ms. Allocated memory is still 309.3 MB. Free memory was 227.8 MB in the beginning and 202.8 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:17:43,903 INFO ]: TraceAbstraction took 42106.08 ms. Allocated memory was 309.3 MB in the beginning and 1.2 GB in the end (delta: 853.5 MB). Free memory was 202.8 MB in the beginning and 499.5 MB in the end (delta: -296.7 MB). Peak memory consumption was 556.8 MB. Max. memory is 3.6 GB. [2018-06-26 18:17:43,906 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 74 locations, 115 edges - StatisticsResult: Encoded RCFG 45 locations, 87 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 75.51 ms. Allocated memory is still 309.3 MB. Free memory was 257.8 MB in the beginning and 254.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 50.32 ms. Allocated memory is still 309.3 MB. Free memory was 254.8 MB in the beginning and 252.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 761.70 ms. Allocated memory is still 309.3 MB. Free memory was 252.8 MB in the beginning and 227.8 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 557.29 ms. Allocated memory is still 309.3 MB. Free memory was 227.8 MB in the beginning and 202.8 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 42106.08 ms. Allocated memory was 309.3 MB in the beginning and 1.2 GB in the end (delta: 853.5 MB). Free memory was 202.8 MB in the beginning and 499.5 MB in the end (delta: -296.7 MB). Peak memory consumption was 556.8 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 45 locations, 1 error locations. SAFE Result, 42.0s OverallTime, 19 OverallIterations, 89 TraceHistogramMax, 27.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2408 SDtfs, 1604 SDslu, 9781 SDs, 0 SdLazy, 25874 SolverSat, 3446 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2957 GetRequests, 2516 SyntacticMatches, 8 SemanticMatches, 433 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5448 ImplicationChecksByTransitivity, 10.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=458occurred in iteration=18, 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: 0.7s AutomataMinimizationTime, 19 MinimizatonAttempts, 1221 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.1s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 5046 NumberOfCodeBlocks, 5046 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 5012 ConstructedInterpolants, 0 QuantifiedInterpolants, 2101201 SizeOfPredicates, 171 NumberOfNonLiveVariables, 29039 ConjunctsInSsa, 280 ConjunctsInUnsatCore, 34 InterpolantComputations, 7 PerfectInterpolantSequences, 98784/106860 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/bcopy5.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-17-43-917.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bcopy5.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-17-43-917.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bcopy5.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-17-43-917.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bcopy5.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-17-43-917.csv Received shutdown request...