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/enc-zip_map2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:19:37,732 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:19:37,734 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:19:37,747 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:19:37,747 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:19:37,748 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:19:37,749 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:19:37,752 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:19:37,754 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:19:37,755 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:19:37,755 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:19:37,756 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:19:37,757 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:19:37,757 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:19:37,758 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:19:37,761 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:19:37,762 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:19:37,764 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:19:37,771 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:19:37,775 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:19:37,776 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:19:37,777 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:19:37,780 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:19:37,780 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:19:37,780 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:19:37,781 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:19:37,782 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:19:37,783 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:19:37,783 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:19:37,784 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:19:37,785 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:19:37,785 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:19:37,786 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:19:37,786 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:19:37,787 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:19:37,787 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:19:37,788 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:19:37,811 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:19:37,811 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:19:37,811 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:19:37,811 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:19:37,812 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:19:37,813 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:19:37,813 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:19:37,813 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:19:37,813 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:19:37,813 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:19:37,814 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:19:37,815 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:19:37,815 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:19:37,815 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:19:37,816 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:19:37,816 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:19:37,816 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:19:37,816 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:19:37,816 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:19:37,816 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:19:37,817 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:19:37,818 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:19:37,818 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:19:37,867 INFO ]: Repository-Root is: /tmp [2018-06-26 18:19:37,883 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:19:37,890 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:19:37,891 INFO ]: Initializing SmtParser... [2018-06-26 18:19:37,892 INFO ]: SmtParser initialized [2018-06-26 18:19:37,893 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/enc-zip_map2.smt2 [2018-06-26 18:19:37,895 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 18:19:37,988 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/enc-zip_map2.smt2 unknown [2018-06-26 18:19:38,227 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/enc-zip_map2.smt2 [2018-06-26 18:19:38,232 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:19:38,238 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:19:38,239 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:19:38,239 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:19:38,239 INFO ]: ChcToBoogie initialized [2018-06-26 18:19:38,243 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:19:38" (1/1) ... [2018-06-26 18:19:38,294 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:38 Unit [2018-06-26 18:19:38,294 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:19:38,295 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:19:38,295 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:19:38,295 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:19:38,320 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:38" (1/1) ... [2018-06-26 18:19:38,320 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:38" (1/1) ... [2018-06-26 18:19:38,324 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:38" (1/1) ... [2018-06-26 18:19:38,324 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:38" (1/1) ... [2018-06-26 18:19:38,328 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:38" (1/1) ... [2018-06-26 18:19:38,330 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:38" (1/1) ... [2018-06-26 18:19:38,331 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:38" (1/1) ... [2018-06-26 18:19:38,332 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:19:38,333 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:19:38,333 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:19:38,333 INFO ]: RCFGBuilder initialized [2018-06-26 18:19:38,334 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:38" (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 18:19:38,344 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:19:38,344 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:19:38,344 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:19:38,344 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:19:38,344 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:19:38,344 INFO ]: Found implementation of procedure Ultimate.START [2018-06-26 18:19:38,629 INFO ]: Using library mode [2018-06-26 18:19:38,630 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:19:38 BoogieIcfgContainer [2018-06-26 18:19:38,630 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:19:38,630 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:19:38,630 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:19:38,631 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:19:38,632 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:19:38" (1/1) ... [2018-06-26 18:19:38,649 INFO ]: Initial Icfg 17 locations, 25 edges [2018-06-26 18:19:38,651 INFO ]: Using Remove infeasible edges [2018-06-26 18:19:38,652 INFO ]: Using Maximize final states [2018-06-26 18:19:38,652 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:19:38,652 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:19:38,654 INFO ]: Using Remove sink states [2018-06-26 18:19:38,656 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:19:38,656 INFO ]: Using Use SBE [2018-06-26 18:19:38,663 INFO ]: SBE split 0 edges [2018-06-26 18:19:38,669 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-26 18:19:38,671 INFO ]: 0 new accepting states [2018-06-26 18:19:38,756 INFO ]: Removed 13 edges and 4 locations by large block encoding [2018-06-26 18:19:38,757 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:19:38,759 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:19:38,759 INFO ]: 0 new accepting states [2018-06-26 18:19:38,759 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:19:38,759 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:19:38,760 INFO ]: Encoded RCFG 11 locations, 18 edges [2018-06-26 18:19:38,760 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:19:38 BasicIcfg [2018-06-26 18:19:38,760 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:19:38,761 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:19:38,761 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:19:38,764 INFO ]: TraceAbstraction initialized [2018-06-26 18:19:38,764 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:19:38" (1/4) ... [2018-06-26 18:19:38,766 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506a04f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:19:38, skipping insertion in model container [2018-06-26 18:19:38,766 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:38" (2/4) ... [2018-06-26 18:19:38,766 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506a04f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:19:38, skipping insertion in model container [2018-06-26 18:19:38,766 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:19:38" (3/4) ... [2018-06-26 18:19:38,767 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506a04f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:19:38, skipping insertion in model container [2018-06-26 18:19:38,767 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:19:38" (4/4) ... [2018-06-26 18:19:38,770 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:19:38,777 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:19:38,783 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:19:38,817 INFO ]: Using default assertion order modulation [2018-06-26 18:19:38,818 INFO ]: Interprodecural is true [2018-06-26 18:19:38,818 INFO ]: Hoare is false [2018-06-26 18:19:38,818 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:19:38,818 INFO ]: Backedges is TWOTRACK [2018-06-26 18:19:38,818 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:19:38,818 INFO ]: Difference is false [2018-06-26 18:19:38,818 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:19:38,818 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:19:38,827 INFO ]: Start isEmpty. Operand 11 states. [2018-06-26 18:19:38,837 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:19:38,837 INFO ]: Found error trace [2018-06-26 18:19:38,838 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:19:38,838 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:38,843 INFO ]: Analyzing trace with hash 35006087, now seen corresponding path program 1 times [2018-06-26 18:19:38,845 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:38,845 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:38,882 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:38,882 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:38,882 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:38,919 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:39,050 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:19:39,052 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:19:39,052 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:19:39,053 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:19:39,064 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:19:39,065 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:19:39,066 INFO ]: Start difference. First operand 11 states. Second operand 3 states. [2018-06-26 18:19:39,150 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:39,150 INFO ]: Finished difference Result 12 states and 19 transitions. [2018-06-26 18:19:39,150 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:19:39,151 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:19:39,151 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:39,159 INFO ]: With dead ends: 12 [2018-06-26 18:19:39,159 INFO ]: Without dead ends: 12 [2018-06-26 18:19:39,160 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 18:19:39,175 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-26 18:19:39,192 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-26 18:19:39,193 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-26 18:19:39,193 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 19 transitions. [2018-06-26 18:19:39,194 INFO ]: Start accepts. Automaton has 12 states and 19 transitions. Word has length 5 [2018-06-26 18:19:39,195 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:39,195 INFO ]: Abstraction has 12 states and 19 transitions. [2018-06-26 18:19:39,195 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:19:39,195 INFO ]: Start isEmpty. Operand 12 states and 19 transitions. [2018-06-26 18:19:39,196 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:19:39,196 INFO ]: Found error trace [2018-06-26 18:19:39,196 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:19:39,196 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:39,196 INFO ]: Analyzing trace with hash 35065669, now seen corresponding path program 1 times [2018-06-26 18:19:39,196 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:39,196 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:39,197 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:39,197 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:39,197 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:39,203 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:39,433 WARN ]: Spent 203.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 9 [2018-06-26 18:19:39,434 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:19:39,434 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:19:39,434 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:19:39,435 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:19:39,435 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:19:39,435 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:19:39,435 INFO ]: Start difference. First operand 12 states and 19 transitions. Second operand 3 states. [2018-06-26 18:19:39,465 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:39,465 INFO ]: Finished difference Result 13 states and 20 transitions. [2018-06-26 18:19:39,467 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:19:39,467 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:19:39,467 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:39,467 INFO ]: With dead ends: 13 [2018-06-26 18:19:39,467 INFO ]: Without dead ends: 13 [2018-06-26 18:19:39,468 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:19:39,468 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-26 18:19:39,470 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-06-26 18:19:39,470 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-26 18:19:39,471 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 19 transitions. [2018-06-26 18:19:39,471 INFO ]: Start accepts. Automaton has 12 states and 19 transitions. Word has length 5 [2018-06-26 18:19:39,471 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:39,471 INFO ]: Abstraction has 12 states and 19 transitions. [2018-06-26 18:19:39,471 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:19:39,471 INFO ]: Start isEmpty. Operand 12 states and 19 transitions. [2018-06-26 18:19:39,473 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:19:39,473 INFO ]: Found error trace [2018-06-26 18:19:39,473 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:19:39,473 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:39,474 INFO ]: Analyzing trace with hash 35125251, now seen corresponding path program 1 times [2018-06-26 18:19:39,474 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:39,474 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:39,474 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:39,474 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:39,475 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:39,481 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:39,513 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:19:39,513 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:19:39,513 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:19:39,513 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:19:39,513 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:19:39,513 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:19:39,513 INFO ]: Start difference. First operand 12 states and 19 transitions. Second operand 3 states. [2018-06-26 18:19:39,568 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:39,568 INFO ]: Finished difference Result 19 states and 32 transitions. [2018-06-26 18:19:39,569 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:19:39,569 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:19:39,569 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:39,569 INFO ]: With dead ends: 19 [2018-06-26 18:19:39,569 INFO ]: Without dead ends: 19 [2018-06-26 18:19:39,570 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 18:19:39,570 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-26 18:19:39,575 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-26 18:19:39,575 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-26 18:19:39,576 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 32 transitions. [2018-06-26 18:19:39,576 INFO ]: Start accepts. Automaton has 19 states and 32 transitions. Word has length 5 [2018-06-26 18:19:39,577 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:39,577 INFO ]: Abstraction has 19 states and 32 transitions. [2018-06-26 18:19:39,577 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:19:39,577 INFO ]: Start isEmpty. Operand 19 states and 32 transitions. [2018-06-26 18:19:39,578 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:19:39,578 INFO ]: Found error trace [2018-06-26 18:19:39,578 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:19:39,578 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:39,578 INFO ]: Analyzing trace with hash 1084662181, now seen corresponding path program 1 times [2018-06-26 18:19:39,578 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:39,578 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:39,579 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:39,579 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:39,579 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:39,588 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:39,762 WARN ]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-26 18:19:39,824 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:19:39,824 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:19:39,824 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 18:19:39,831 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:39,843 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:39,848 INFO ]: Computing forward predicates... [2018-06-26 18:19:39,889 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:19:39,907 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:19:39,908 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-26 18:19:39,908 INFO ]: Interpolant automaton has 5 states [2018-06-26 18:19:39,908 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 18:19:39,908 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:19:39,908 INFO ]: Start difference. First operand 19 states and 32 transitions. Second operand 5 states. [2018-06-26 18:19:40,112 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:40,112 INFO ]: Finished difference Result 24 states and 36 transitions. [2018-06-26 18:19:40,112 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 18:19:40,112 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-26 18:19:40,113 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:40,113 INFO ]: With dead ends: 24 [2018-06-26 18:19:40,113 INFO ]: Without dead ends: 16 [2018-06-26 18:19:40,113 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:19:40,114 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-26 18:19:40,118 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-26 18:19:40,118 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-26 18:19:40,119 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 24 transitions. [2018-06-26 18:19:40,119 INFO ]: Start accepts. Automaton has 16 states and 24 transitions. Word has length 6 [2018-06-26 18:19:40,119 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:40,119 INFO ]: Abstraction has 16 states and 24 transitions. [2018-06-26 18:19:40,119 INFO ]: Interpolant automaton has 5 states. [2018-06-26 18:19:40,119 INFO ]: Start isEmpty. Operand 16 states and 24 transitions. [2018-06-26 18:19:40,119 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-26 18:19:40,119 INFO ]: Found error trace [2018-06-26 18:19:40,120 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:19:40,120 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:40,120 INFO ]: Analyzing trace with hash -1667545228, now seen corresponding path program 1 times [2018-06-26 18:19:40,120 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:40,120 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:40,121 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:40,121 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:40,121 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:40,135 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:40,208 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:19:40,209 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:19:40,209 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-26 18:19:40,209 INFO ]: Interpolant automaton has 6 states [2018-06-26 18:19:40,209 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 18:19:40,209 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:19:40,209 INFO ]: Start difference. First operand 16 states and 24 transitions. Second operand 6 states. [2018-06-26 18:19:40,451 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:40,451 INFO ]: Finished difference Result 24 states and 37 transitions. [2018-06-26 18:19:40,452 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-26 18:19:40,452 INFO ]: Start accepts. Automaton has 6 states. Word has length 10 [2018-06-26 18:19:40,452 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:40,454 INFO ]: With dead ends: 24 [2018-06-26 18:19:40,454 INFO ]: Without dead ends: 18 [2018-06-26 18:19:40,455 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-26 18:19:40,455 INFO ]: Start minimizeSevpa. Operand 18 states. [2018-06-26 18:19:40,458 INFO ]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-06-26 18:19:40,458 INFO ]: Start removeUnreachable. Operand 18 states. [2018-06-26 18:19:40,459 INFO ]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2018-06-26 18:19:40,459 INFO ]: Start accepts. Automaton has 18 states and 26 transitions. Word has length 10 [2018-06-26 18:19:40,459 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:40,459 INFO ]: Abstraction has 18 states and 26 transitions. [2018-06-26 18:19:40,459 INFO ]: Interpolant automaton has 6 states. [2018-06-26 18:19:40,459 INFO ]: Start isEmpty. Operand 18 states and 26 transitions. [2018-06-26 18:19:40,460 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-26 18:19:40,460 INFO ]: Found error trace [2018-06-26 18:19:40,460 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:19:40,460 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:40,460 INFO ]: Analyzing trace with hash -797962279, now seen corresponding path program 1 times [2018-06-26 18:19:40,460 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:40,461 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:40,461 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:40,461 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:40,461 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:40,479 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:40,833 INFO ]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-26 18:19:40,833 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:19:40,833 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-26 18:19:40,850 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:19:40,892 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:40,895 INFO ]: Computing forward predicates... [2018-06-26 18:19:41,042 INFO ]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-26 18:19:41,062 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:19:41,062 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2018-06-26 18:19:41,062 INFO ]: Interpolant automaton has 12 states [2018-06-26 18:19:41,063 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-26 18:19:41,063 INFO ]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-06-26 18:19:41,063 INFO ]: Start difference. First operand 18 states and 26 transitions. Second operand 12 states. [2018-06-26 18:19:41,264 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:41,264 INFO ]: Finished difference Result 27 states and 39 transitions. [2018-06-26 18:19:41,265 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-26 18:19:41,265 INFO ]: Start accepts. Automaton has 12 states. Word has length 15 [2018-06-26 18:19:41,265 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:41,266 INFO ]: With dead ends: 27 [2018-06-26 18:19:41,266 INFO ]: Without dead ends: 27 [2018-06-26 18:19:41,266 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-06-26 18:19:41,266 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-26 18:19:41,270 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 25. [2018-06-26 18:19:41,270 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-26 18:19:41,271 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2018-06-26 18:19:41,271 INFO ]: Start accepts. Automaton has 25 states and 36 transitions. Word has length 15 [2018-06-26 18:19:41,271 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:41,271 INFO ]: Abstraction has 25 states and 36 transitions. [2018-06-26 18:19:41,271 INFO ]: Interpolant automaton has 12 states. [2018-06-26 18:19:41,271 INFO ]: Start isEmpty. Operand 25 states and 36 transitions. [2018-06-26 18:19:41,272 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-26 18:19:41,272 INFO ]: Found error trace [2018-06-26 18:19:41,272 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:19:41,272 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:41,272 INFO ]: Analyzing trace with hash 1032507154, now seen corresponding path program 1 times [2018-06-26 18:19:41,272 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:41,272 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:41,273 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:41,273 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:41,273 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:41,289 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:41,591 WARN ]: Spent 141.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2018-06-26 18:19:41,641 INFO ]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-26 18:19:41,641 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:19:41,641 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 18:19:41,652 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:41,676 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:41,679 INFO ]: Computing forward predicates... [2018-06-26 18:19:41,805 INFO ]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-26 18:19:41,826 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:19:41,826 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2018-06-26 18:19:41,827 INFO ]: Interpolant automaton has 16 states [2018-06-26 18:19:41,827 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-26 18:19:41,827 INFO ]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2018-06-26 18:19:41,827 INFO ]: Start difference. First operand 25 states and 36 transitions. Second operand 16 states. [2018-06-26 18:19:42,206 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:42,206 INFO ]: Finished difference Result 26 states and 36 transitions. [2018-06-26 18:19:42,206 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-26 18:19:42,206 INFO ]: Start accepts. Automaton has 16 states. Word has length 16 [2018-06-26 18:19:42,206 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:42,206 INFO ]: With dead ends: 26 [2018-06-26 18:19:42,206 INFO ]: Without dead ends: 0 [2018-06-26 18:19:42,207 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2018-06-26 18:19:42,207 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:19:42,207 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:19:42,207 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:19:42,207 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:19:42,207 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-06-26 18:19:42,207 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:42,207 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:19:42,207 INFO ]: Interpolant automaton has 16 states. [2018-06-26 18:19:42,207 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:19:42,207 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:19:42,209 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:19:42,210 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:19:42 BasicIcfg [2018-06-26 18:19:42,210 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:19:42,211 INFO ]: Toolchain (without parser) took 3978.69 ms. Allocated memory was 307.2 MB in the beginning and 339.7 MB in the end (delta: 32.5 MB). Free memory was 262.7 MB in the beginning and 291.7 MB in the end (delta: -29.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 3.6 GB. [2018-06-26 18:19:42,212 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 307.2 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:19:42,212 INFO ]: ChcToBoogie took 55.99 ms. Allocated memory is still 307.2 MB. Free memory was 262.7 MB in the beginning and 259.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:19:42,213 INFO ]: Boogie Preprocessor took 37.31 ms. Allocated memory is still 307.2 MB. Free memory was 259.7 MB in the beginning and 258.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-26 18:19:42,213 INFO ]: RCFGBuilder took 296.68 ms. Allocated memory is still 307.2 MB. Free memory was 258.7 MB in the beginning and 249.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:19:42,214 INFO ]: BlockEncodingV2 took 129.87 ms. Allocated memory is still 307.2 MB. Free memory was 249.7 MB in the beginning and 244.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:19:42,214 INFO ]: TraceAbstraction took 3449.17 ms. Allocated memory was 307.2 MB in the beginning and 339.7 MB in the end (delta: 32.5 MB). Free memory was 244.8 MB in the beginning and 291.7 MB in the end (delta: -47.0 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:19:42,218 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 17 locations, 25 edges - StatisticsResult: Encoded RCFG 11 locations, 18 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 307.2 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 55.99 ms. Allocated memory is still 307.2 MB. Free memory was 262.7 MB in the beginning and 259.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.31 ms. Allocated memory is still 307.2 MB. Free memory was 259.7 MB in the beginning and 258.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 296.68 ms. Allocated memory is still 307.2 MB. Free memory was 258.7 MB in the beginning and 249.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 129.87 ms. Allocated memory is still 307.2 MB. Free memory was 249.7 MB in the beginning and 244.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3449.17 ms. Allocated memory was 307.2 MB in the beginning and 339.7 MB in the end (delta: 32.5 MB). Free memory was 244.8 MB in the beginning and 291.7 MB in the end (delta: -47.0 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 11 locations, 1 error locations. SAFE Result, 3.3s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 100 SDtfs, 45 SDslu, 191 SDs, 0 SdLazy, 385 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 3302 SizeOfPredicates, 16 NumberOfNonLiveVariables, 253 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 25/34 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/enc-zip_map2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-19-42-229.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/enc-zip_map2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-19-42-229.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/enc-zip_map2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-19-42-229.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/enc-zip_map2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-19-42-229.csv Received shutdown request...