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/dotprod.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:15:35,810 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:15:35,813 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:15:35,825 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:15:35,825 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:15:35,826 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:15:35,827 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:15:35,831 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:15:35,832 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:15:35,834 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:15:35,835 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:15:35,835 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:15:35,836 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:15:35,837 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:15:35,837 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:15:35,840 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:15:35,842 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:15:35,843 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:15:35,853 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:15:35,854 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:15:35,855 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:15:35,857 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-24 21:15:35,872 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:15:35,896 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:15:35,896 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:15:35,897 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:15:35,897 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:15:35,898 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:15:35,898 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:15:35,898 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:15:35,898 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:15:35,899 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:15:35,899 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:15:35,899 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:15:35,899 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:15:35,899 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:15:35,899 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:15:35,900 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:15:35,900 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:15:35,901 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:15:35,901 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:15:35,901 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:15:35,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:15:35,901 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:15:35,903 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:15:35,903 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:15:35,946 INFO ]: Repository-Root is: /tmp [2018-06-24 21:15:35,968 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:15:35,974 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:15:35,975 INFO ]: Initializing SmtParser... [2018-06-24 21:15:35,975 INFO ]: SmtParser initialized [2018-06-24 21:15:35,976 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/dotprod.smt2 [2018-06-24 21:15:35,977 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 21:15:36,067 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/dotprod.smt2 unknown [2018-06-24 21:15:36,324 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/dotprod.smt2 [2018-06-24 21:15:36,329 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:15:36,338 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:15:36,339 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:15:36,339 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:15:36,339 INFO ]: ChcToBoogie initialized [2018-06-24 21:15:36,342 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:15:36" (1/1) ... [2018-06-24 21:15:36,404 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:15:36 Unit [2018-06-24 21:15:36,404 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:15:36,405 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:15:36,405 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:15:36,405 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:15:36,424 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:15:36" (1/1) ... [2018-06-24 21:15:36,425 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:15:36" (1/1) ... [2018-06-24 21:15:36,431 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:15:36" (1/1) ... [2018-06-24 21:15:36,431 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:15:36" (1/1) ... [2018-06-24 21:15:36,436 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:15:36" (1/1) ... [2018-06-24 21:15:36,446 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:15:36" (1/1) ... [2018-06-24 21:15:36,447 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:15:36" (1/1) ... [2018-06-24 21:15:36,449 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:15:36,455 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:15:36,455 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:15:36,455 INFO ]: RCFGBuilder initialized [2018-06-24 21:15:36,456 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:15:36" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 21:15:36,469 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:15:36,469 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:15:36,469 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:15:36,469 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:15:36,469 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:15:36,469 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:15:36,875 INFO ]: Using library mode [2018-06-24 21:15:36,875 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:15:36 BoogieIcfgContainer [2018-06-24 21:15:36,875 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:15:36,876 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:15:36,876 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:15:36,877 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:15:36,877 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:15:36" (1/1) ... [2018-06-24 21:15:36,899 INFO ]: Initial Icfg 29 locations, 41 edges [2018-06-24 21:15:36,900 INFO ]: Using Remove infeasible edges [2018-06-24 21:15:36,901 INFO ]: Using Maximize final states [2018-06-24 21:15:36,902 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:15:36,902 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:15:36,904 INFO ]: Using Remove sink states [2018-06-24 21:15:36,904 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:15:36,904 INFO ]: Using Use SBE [2018-06-24 21:15:36,936 INFO ]: SBE split 2 edges [2018-06-24 21:15:36,949 INFO ]: Removed 4 edges and 2 locations because of local infeasibility [2018-06-24 21:15:36,955 INFO ]: 0 new accepting states [2018-06-24 21:15:37,286 INFO ]: Removed 38 edges and 11 locations by large block encoding [2018-06-24 21:15:37,288 INFO ]: Removed 3 edges and 1 locations by removing sink states [2018-06-24 21:15:37,289 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:15:37,289 INFO ]: 0 new accepting states [2018-06-24 21:15:37,290 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:15:37,292 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:15:37,292 INFO ]: Encoded RCFG 15 locations, 28 edges [2018-06-24 21:15:37,292 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:15:37 BasicIcfg [2018-06-24 21:15:37,292 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:15:37,293 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:15:37,293 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:15:37,296 INFO ]: TraceAbstraction initialized [2018-06-24 21:15:37,296 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:15:36" (1/4) ... [2018-06-24 21:15:37,297 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d87095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:15:37, skipping insertion in model container [2018-06-24 21:15:37,297 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:15:36" (2/4) ... [2018-06-24 21:15:37,297 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d87095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:15:37, skipping insertion in model container [2018-06-24 21:15:37,297 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:15:36" (3/4) ... [2018-06-24 21:15:37,298 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d87095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:15:37, skipping insertion in model container [2018-06-24 21:15:37,298 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:15:37" (4/4) ... [2018-06-24 21:15:37,300 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:15:37,308 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:15:37,313 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:15:37,351 INFO ]: Using default assertion order modulation [2018-06-24 21:15:37,351 INFO ]: Interprodecural is true [2018-06-24 21:15:37,351 INFO ]: Hoare is false [2018-06-24 21:15:37,351 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:15:37,351 INFO ]: Backedges is TWOTRACK [2018-06-24 21:15:37,351 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:15:37,351 INFO ]: Difference is false [2018-06-24 21:15:37,351 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:15:37,352 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:15:37,362 INFO ]: Start isEmpty. Operand 15 states. [2018-06-24 21:15:37,378 INFO ]: Finished isEmpty. Found accepting run of length 5 [2018-06-24 21:15:37,378 INFO ]: Found error trace [2018-06-24 21:15:37,379 INFO ]: trace histogram [1, 1, 1, 1] [2018-06-24 21:15:37,379 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:15:37,384 INFO ]: Analyzing trace with hash 1186154, now seen corresponding path program 1 times [2018-06-24 21:15:37,386 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:15:37,387 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:15:37,420 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:37,420 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:15:37,420 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:37,452 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:15:37,504 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:15:37,506 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:15:37,506 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:15:37,508 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:15:37,519 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:15:37,519 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:15:37,522 INFO ]: Start difference. First operand 15 states. Second operand 3 states. [2018-06-24 21:15:37,804 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:15:37,804 INFO ]: Finished difference Result 25 states and 46 transitions. [2018-06-24 21:15:37,804 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:15:37,806 INFO ]: Start accepts. Automaton has 3 states. Word has length 4 [2018-06-24 21:15:37,806 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:15:37,816 INFO ]: With dead ends: 25 [2018-06-24 21:15:37,816 INFO ]: Without dead ends: 25 [2018-06-24 21:15:37,818 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:15:37,833 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-24 21:15:37,855 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-24 21:15:37,856 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-24 21:15:37,858 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 46 transitions. [2018-06-24 21:15:37,859 INFO ]: Start accepts. Automaton has 25 states and 46 transitions. Word has length 4 [2018-06-24 21:15:37,860 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:15:37,860 INFO ]: Abstraction has 25 states and 46 transitions. [2018-06-24 21:15:37,860 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:15:37,860 INFO ]: Start isEmpty. Operand 25 states and 46 transitions. [2018-06-24 21:15:37,862 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 21:15:37,862 INFO ]: Found error trace [2018-06-24 21:15:37,862 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:15:37,862 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:15:37,863 INFO ]: Analyzing trace with hash 845165683, now seen corresponding path program 1 times [2018-06-24 21:15:37,863 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:15:37,863 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:15:37,863 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:37,864 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:15:37,864 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:37,876 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:15:37,900 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:15:37,900 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:15:37,900 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:15:37,902 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:15:37,902 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:15:37,902 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:15:37,902 INFO ]: Start difference. First operand 25 states and 46 transitions. Second operand 3 states. [2018-06-24 21:15:38,211 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:15:38,211 INFO ]: Finished difference Result 35 states and 65 transitions. [2018-06-24 21:15:38,211 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:15:38,211 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-24 21:15:38,211 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:15:38,213 INFO ]: With dead ends: 35 [2018-06-24 21:15:38,213 INFO ]: Without dead ends: 35 [2018-06-24 21:15:38,214 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:15:38,214 INFO ]: Start minimizeSevpa. Operand 35 states. [2018-06-24 21:15:38,221 INFO ]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-06-24 21:15:38,222 INFO ]: Start removeUnreachable. Operand 35 states. [2018-06-24 21:15:38,223 INFO ]: Finished removeUnreachable. Reduced from 35 states to 35 states and 65 transitions. [2018-06-24 21:15:38,223 INFO ]: Start accepts. Automaton has 35 states and 65 transitions. Word has length 8 [2018-06-24 21:15:38,224 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:15:38,224 INFO ]: Abstraction has 35 states and 65 transitions. [2018-06-24 21:15:38,224 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:15:38,224 INFO ]: Start isEmpty. Operand 35 states and 65 transitions. [2018-06-24 21:15:38,226 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-24 21:15:38,226 INFO ]: Found error trace [2018-06-24 21:15:38,226 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:15:38,226 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:15:38,226 INFO ]: Analyzing trace with hash 1603359661, now seen corresponding path program 1 times [2018-06-24 21:15:38,226 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:15:38,226 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:15:38,228 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:38,228 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:15:38,228 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:38,235 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:15:38,319 INFO ]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-24 21:15:38,320 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:15:38,320 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:15:38,320 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:15:38,320 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:15:38,320 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:15:38,320 INFO ]: Start difference. First operand 35 states and 65 transitions. Second operand 3 states. [2018-06-24 21:15:38,437 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:15:38,437 INFO ]: Finished difference Result 45 states and 86 transitions. [2018-06-24 21:15:38,437 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:15:38,437 INFO ]: Start accepts. Automaton has 3 states. Word has length 12 [2018-06-24 21:15:38,438 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:15:38,440 INFO ]: With dead ends: 45 [2018-06-24 21:15:38,440 INFO ]: Without dead ends: 45 [2018-06-24 21:15:38,440 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:15:38,440 INFO ]: Start minimizeSevpa. Operand 45 states. [2018-06-24 21:15:38,447 INFO ]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-06-24 21:15:38,447 INFO ]: Start removeUnreachable. Operand 45 states. [2018-06-24 21:15:38,449 INFO ]: Finished removeUnreachable. Reduced from 45 states to 45 states and 86 transitions. [2018-06-24 21:15:38,449 INFO ]: Start accepts. Automaton has 45 states and 86 transitions. Word has length 12 [2018-06-24 21:15:38,449 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:15:38,449 INFO ]: Abstraction has 45 states and 86 transitions. [2018-06-24 21:15:38,449 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:15:38,449 INFO ]: Start isEmpty. Operand 45 states and 86 transitions. [2018-06-24 21:15:38,451 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-24 21:15:38,451 INFO ]: Found error trace [2018-06-24 21:15:38,451 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:15:38,451 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:15:38,451 INFO ]: Analyzing trace with hash 2086314260, now seen corresponding path program 1 times [2018-06-24 21:15:38,451 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:15:38,451 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:15:38,454 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:38,454 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:15:38,454 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:38,469 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:15:38,501 INFO ]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-24 21:15:38,502 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:15:38,502 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:15:38,502 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:15:38,502 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:15:38,502 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:15:38,502 INFO ]: Start difference. First operand 45 states and 86 transitions. Second operand 3 states. [2018-06-24 21:15:38,735 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:15:38,735 INFO ]: Finished difference Result 55 states and 108 transitions. [2018-06-24 21:15:38,735 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:15:38,735 INFO ]: Start accepts. Automaton has 3 states. Word has length 13 [2018-06-24 21:15:38,735 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:15:38,737 INFO ]: With dead ends: 55 [2018-06-24 21:15:38,738 INFO ]: Without dead ends: 55 [2018-06-24 21:15:38,738 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:15:38,738 INFO ]: Start minimizeSevpa. Operand 55 states. [2018-06-24 21:15:38,746 INFO ]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-06-24 21:15:38,746 INFO ]: Start removeUnreachable. Operand 55 states. [2018-06-24 21:15:38,748 INFO ]: Finished removeUnreachable. Reduced from 55 states to 55 states and 108 transitions. [2018-06-24 21:15:38,748 INFO ]: Start accepts. Automaton has 55 states and 108 transitions. Word has length 13 [2018-06-24 21:15:38,748 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:15:38,748 INFO ]: Abstraction has 55 states and 108 transitions. [2018-06-24 21:15:38,748 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:15:38,748 INFO ]: Start isEmpty. Operand 55 states and 108 transitions. [2018-06-24 21:15:38,751 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-24 21:15:38,751 INFO ]: Found error trace [2018-06-24 21:15:38,751 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:15:38,751 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:15:38,751 INFO ]: Analyzing trace with hash -1821404879, now seen corresponding path program 1 times [2018-06-24 21:15:38,751 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:15:38,751 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:15:38,752 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:38,752 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:15:38,752 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:38,773 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:15:39,328 INFO ]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:15:39,328 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:15:39,328 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:15:39,340 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:15:39,375 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:15:39,381 INFO ]: Computing forward predicates... [2018-06-24 21:15:39,473 INFO ]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:15:39,494 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:15:39,494 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-24 21:15:39,494 INFO ]: Interpolant automaton has 11 states [2018-06-24 21:15:39,494 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-24 21:15:39,494 INFO ]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-06-24 21:15:39,495 INFO ]: Start difference. First operand 55 states and 108 transitions. Second operand 11 states. [2018-06-24 21:15:39,933 WARN ]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-06-24 21:15:40,799 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:15:40,799 INFO ]: Finished difference Result 139 states and 333 transitions. [2018-06-24 21:15:40,800 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-24 21:15:40,800 INFO ]: Start accepts. Automaton has 11 states. Word has length 13 [2018-06-24 21:15:40,800 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:15:40,808 INFO ]: With dead ends: 139 [2018-06-24 21:15:40,808 INFO ]: Without dead ends: 115 [2018-06-24 21:15:40,809 INFO ]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2018-06-24 21:15:40,809 INFO ]: Start minimizeSevpa. Operand 115 states. [2018-06-24 21:15:40,852 INFO ]: Finished minimizeSevpa. Reduced states from 115 to 68. [2018-06-24 21:15:40,852 INFO ]: Start removeUnreachable. Operand 68 states. [2018-06-24 21:15:40,854 INFO ]: Finished removeUnreachable. Reduced from 68 states to 68 states and 134 transitions. [2018-06-24 21:15:40,854 INFO ]: Start accepts. Automaton has 68 states and 134 transitions. Word has length 13 [2018-06-24 21:15:40,854 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:15:40,854 INFO ]: Abstraction has 68 states and 134 transitions. [2018-06-24 21:15:40,854 INFO ]: Interpolant automaton has 11 states. [2018-06-24 21:15:40,854 INFO ]: Start isEmpty. Operand 68 states and 134 transitions. [2018-06-24 21:15:40,856 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-24 21:15:40,856 INFO ]: Found error trace [2018-06-24 21:15:40,857 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:15:40,857 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:15:40,857 INFO ]: Analyzing trace with hash -1692322160, now seen corresponding path program 1 times [2018-06-24 21:15:40,857 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:15:40,857 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:15:40,858 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:40,858 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:15:40,858 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:40,870 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:15:40,902 INFO ]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-24 21:15:40,902 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:15:40,902 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:15:40,902 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:15:40,902 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:15:40,902 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:15:40,902 INFO ]: Start difference. First operand 68 states and 134 transitions. Second operand 3 states. [2018-06-24 21:15:40,927 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:15:40,927 INFO ]: Finished difference Result 103 states and 189 transitions. [2018-06-24 21:15:40,929 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:15:40,929 INFO ]: Start accepts. Automaton has 3 states. Word has length 13 [2018-06-24 21:15:40,929 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:15:40,931 INFO ]: With dead ends: 103 [2018-06-24 21:15:40,931 INFO ]: Without dead ends: 93 [2018-06-24 21:15:40,931 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:15:40,932 INFO ]: Start minimizeSevpa. Operand 93 states. [2018-06-24 21:15:40,944 INFO ]: Finished minimizeSevpa. Reduced states from 93 to 73. [2018-06-24 21:15:40,944 INFO ]: Start removeUnreachable. Operand 73 states. [2018-06-24 21:15:40,945 INFO ]: Finished removeUnreachable. Reduced from 73 states to 73 states and 139 transitions. [2018-06-24 21:15:40,945 INFO ]: Start accepts. Automaton has 73 states and 139 transitions. Word has length 13 [2018-06-24 21:15:40,946 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:15:40,946 INFO ]: Abstraction has 73 states and 139 transitions. [2018-06-24 21:15:40,946 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:15:40,946 INFO ]: Start isEmpty. Operand 73 states and 139 transitions. [2018-06-24 21:15:40,948 INFO ]: Finished isEmpty. Found accepting run of length 27 [2018-06-24 21:15:40,948 INFO ]: Found error trace [2018-06-24 21:15:40,948 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:15:40,948 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:15:40,948 INFO ]: Analyzing trace with hash 1207676895, now seen corresponding path program 1 times [2018-06-24 21:15:40,948 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:15:40,948 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:15:40,949 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:40,949 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:15:40,949 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:40,971 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:15:41,129 INFO ]: Checked inductivity of 35 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-24 21:15:41,130 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:15:41,130 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 [2018-06-24 21:15:41,136 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:15:41,184 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:15:41,188 INFO ]: Computing forward predicates... [2018-06-24 21:15:41,442 INFO ]: Checked inductivity of 35 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-24 21:15:41,468 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:15:41,468 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-24 21:15:41,469 INFO ]: Interpolant automaton has 16 states [2018-06-24 21:15:41,469 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-24 21:15:41,469 INFO ]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2018-06-24 21:15:41,469 INFO ]: Start difference. First operand 73 states and 139 transitions. Second operand 16 states. [2018-06-24 21:15:42,851 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:15:42,851 INFO ]: Finished difference Result 163 states and 401 transitions. [2018-06-24 21:15:42,852 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-06-24 21:15:42,852 INFO ]: Start accepts. Automaton has 16 states. Word has length 26 [2018-06-24 21:15:42,852 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:15:42,855 INFO ]: With dead ends: 163 [2018-06-24 21:15:42,855 INFO ]: Without dead ends: 146 [2018-06-24 21:15:42,856 INFO ]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=178, Invalid=878, Unknown=0, NotChecked=0, Total=1056 [2018-06-24 21:15:42,856 INFO ]: Start minimizeSevpa. Operand 146 states. [2018-06-24 21:15:42,885 INFO ]: Finished minimizeSevpa. Reduced states from 146 to 90. [2018-06-24 21:15:42,885 INFO ]: Start removeUnreachable. Operand 90 states. [2018-06-24 21:15:42,887 INFO ]: Finished removeUnreachable. Reduced from 90 states to 90 states and 180 transitions. [2018-06-24 21:15:42,887 INFO ]: Start accepts. Automaton has 90 states and 180 transitions. Word has length 26 [2018-06-24 21:15:42,887 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:15:42,887 INFO ]: Abstraction has 90 states and 180 transitions. [2018-06-24 21:15:42,887 INFO ]: Interpolant automaton has 16 states. [2018-06-24 21:15:42,887 INFO ]: Start isEmpty. Operand 90 states and 180 transitions. [2018-06-24 21:15:42,891 INFO ]: Finished isEmpty. Found accepting run of length 39 [2018-06-24 21:15:42,891 INFO ]: Found error trace [2018-06-24 21:15:42,891 INFO ]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:15:42,891 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:15:42,891 INFO ]: Analyzing trace with hash -1865063303, now seen corresponding path program 1 times [2018-06-24 21:15:42,891 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:15:42,891 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:15:42,892 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:42,892 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:15:42,892 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:42,899 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:15:42,899 INFO ]: Advancing trace checker [2018-06-24 21:15:42,899 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-24 21:15:42,914 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:15:42,967 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:15:42,972 INFO ]: Computing forward predicates... [2018-06-24 21:15:43,258 WARN ]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-24 21:15:43,371 INFO ]: Checked inductivity of 87 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-06-24 21:15:43,402 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:15:43,403 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-06-24 21:15:43,403 INFO ]: Interpolant automaton has 10 states [2018-06-24 21:15:43,403 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-24 21:15:43,403 INFO ]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-06-24 21:15:43,403 INFO ]: Start difference. First operand 90 states and 180 transitions. Second operand 10 states. [2018-06-24 21:15:43,594 WARN ]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-24 21:15:44,796 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:15:44,796 INFO ]: Finished difference Result 268 states and 784 transitions. [2018-06-24 21:15:44,796 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-06-24 21:15:44,796 INFO ]: Start accepts. Automaton has 10 states. Word has length 38 [2018-06-24 21:15:44,797 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:15:44,804 INFO ]: With dead ends: 268 [2018-06-24 21:15:44,804 INFO ]: Without dead ends: 235 [2018-06-24 21:15:44,804 INFO ]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=289, Invalid=971, Unknown=0, NotChecked=0, Total=1260 [2018-06-24 21:15:44,805 INFO ]: Start minimizeSevpa. Operand 235 states. [2018-06-24 21:15:44,851 INFO ]: Finished minimizeSevpa. Reduced states from 235 to 155. [2018-06-24 21:15:44,852 INFO ]: Start removeUnreachable. Operand 155 states. [2018-06-24 21:15:44,856 INFO ]: Finished removeUnreachable. Reduced from 155 states to 155 states and 395 transitions. [2018-06-24 21:15:44,856 INFO ]: Start accepts. Automaton has 155 states and 395 transitions. Word has length 38 [2018-06-24 21:15:44,856 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:15:44,856 INFO ]: Abstraction has 155 states and 395 transitions. [2018-06-24 21:15:44,856 INFO ]: Interpolant automaton has 10 states. [2018-06-24 21:15:44,856 INFO ]: Start isEmpty. Operand 155 states and 395 transitions. [2018-06-24 21:15:44,862 INFO ]: Finished isEmpty. Found accepting run of length 39 [2018-06-24 21:15:44,862 INFO ]: Found error trace [2018-06-24 21:15:44,862 INFO ]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:15:44,863 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:15:44,863 INFO ]: Analyzing trace with hash -1535297542, now seen corresponding path program 1 times [2018-06-24 21:15:44,863 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:15:44,863 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:15:44,863 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:44,863 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:15:44,863 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:44,868 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:15:44,869 INFO ]: Advancing trace checker [2018-06-24 21:15:44,869 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 (exit command is (exit), workingDir is null) [2018-06-24 21:15:44,883 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-24 21:15:44,944 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:15:44,948 INFO ]: Computing forward predicates... [2018-06-24 21:15:45,187 INFO ]: Checked inductivity of 87 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-24 21:15:45,208 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:15:45,208 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-06-24 21:15:45,208 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:15:45,209 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:15:45,209 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:15:45,209 INFO ]: Start difference. First operand 155 states and 395 transitions. Second operand 5 states. [2018-06-24 21:15:45,715 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:15:45,715 INFO ]: Finished difference Result 194 states and 508 transitions. [2018-06-24 21:15:45,716 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 21:15:45,716 INFO ]: Start accepts. Automaton has 5 states. Word has length 38 [2018-06-24 21:15:45,716 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:15:45,719 INFO ]: With dead ends: 194 [2018-06-24 21:15:45,719 INFO ]: Without dead ends: 152 [2018-06-24 21:15:45,719 INFO ]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:15:45,719 INFO ]: Start minimizeSevpa. Operand 152 states. [2018-06-24 21:15:45,753 INFO ]: Finished minimizeSevpa. Reduced states from 152 to 143. [2018-06-24 21:15:45,753 INFO ]: Start removeUnreachable. Operand 143 states. [2018-06-24 21:15:45,759 INFO ]: Finished removeUnreachable. Reduced from 143 states to 143 states and 371 transitions. [2018-06-24 21:15:45,759 INFO ]: Start accepts. Automaton has 143 states and 371 transitions. Word has length 38 [2018-06-24 21:15:45,759 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:15:45,759 INFO ]: Abstraction has 143 states and 371 transitions. [2018-06-24 21:15:45,759 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:15:45,759 INFO ]: Start isEmpty. Operand 143 states and 371 transitions. [2018-06-24 21:15:45,770 INFO ]: Finished isEmpty. Found accepting run of length 89 [2018-06-24 21:15:45,770 INFO ]: Found error trace [2018-06-24 21:15:45,770 INFO ]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2018-06-24 21:15:45,770 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:15:45,770 INFO ]: Analyzing trace with hash -896990711, now seen corresponding path program 1 times [2018-06-24 21:15:45,770 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:15:45,770 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:15:45,771 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:45,771 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:15:45,771 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:45,778 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:15:45,778 INFO ]: Advancing trace checker [2018-06-24 21:15:45,778 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 (exit command is (exit), workingDir is null) [2018-06-24 21:15:45,794 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-24 21:15:45,919 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:15:45,932 INFO ]: Computing forward predicates... [2018-06-24 21:15:46,093 INFO ]: Checked inductivity of 534 backedges. 139 proven. 54 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2018-06-24 21:15:46,124 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:15:46,124 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-06-24 21:15:46,125 INFO ]: Interpolant automaton has 8 states [2018-06-24 21:15:46,125 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 21:15:46,125 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:15:46,125 INFO ]: Start difference. First operand 143 states and 371 transitions. Second operand 8 states. [2018-06-24 21:15:46,749 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:15:46,749 INFO ]: Finished difference Result 333 states and 1019 transitions. [2018-06-24 21:15:46,750 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-06-24 21:15:46,750 INFO ]: Start accepts. Automaton has 8 states. Word has length 88 [2018-06-24 21:15:46,750 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:15:46,763 INFO ]: With dead ends: 333 [2018-06-24 21:15:46,763 INFO ]: Without dead ends: 333 [2018-06-24 21:15:46,764 INFO ]: 0 DeclaredPredicates, 109 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2018-06-24 21:15:46,764 INFO ]: Start minimizeSevpa. Operand 333 states. [2018-06-24 21:15:46,817 INFO ]: Finished minimizeSevpa. Reduced states from 333 to 237. [2018-06-24 21:15:46,817 INFO ]: Start removeUnreachable. Operand 237 states. [2018-06-24 21:15:46,823 INFO ]: Finished removeUnreachable. Reduced from 237 states to 237 states and 687 transitions. [2018-06-24 21:15:46,824 INFO ]: Start accepts. Automaton has 237 states and 687 transitions. Word has length 88 [2018-06-24 21:15:46,824 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:15:46,824 INFO ]: Abstraction has 237 states and 687 transitions. [2018-06-24 21:15:46,824 INFO ]: Interpolant automaton has 8 states. [2018-06-24 21:15:46,824 INFO ]: Start isEmpty. Operand 237 states and 687 transitions. [2018-06-24 21:15:46,837 INFO ]: Finished isEmpty. Found accepting run of length 114 [2018-06-24 21:15:46,837 INFO ]: Found error trace [2018-06-24 21:15:46,838 INFO ]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 6, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2018-06-24 21:15:46,838 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:15:46,838 INFO ]: Analyzing trace with hash -73918815, now seen corresponding path program 2 times [2018-06-24 21:15:46,838 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:15:46,838 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:15:46,839 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:46,839 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:15:46,839 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:15:46,847 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:15:46,847 INFO ]: Advancing trace checker [2018-06-24 21:15:46,847 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-24 21:15:46,862 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:15:47,016 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:15:47,016 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:15:47,222 INFO ]: Computing forward predicates... [2018-06-24 21:15:47,305 INFO ]: Checked inductivity of 900 backedges. 468 proven. 13 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2018-06-24 21:15:47,325 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:15:47,325 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-06-24 21:15:47,367 INFO ]: Interpolant automaton has 7 states [2018-06-24 21:15:47,367 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 21:15:47,367 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:15:47,367 INFO ]: Start difference. First operand 237 states and 687 transitions. Second operand 7 states. [2018-06-24 21:15:47,510 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:15:47,510 INFO ]: Finished difference Result 133 states and 230 transitions. [2018-06-24 21:15:47,510 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-24 21:15:47,510 INFO ]: Start accepts. Automaton has 7 states. Word has length 113 [2018-06-24 21:15:47,510 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:15:47,510 INFO ]: With dead ends: 133 [2018-06-24 21:15:47,510 INFO ]: Without dead ends: 0 [2018-06-24 21:15:47,511 INFO ]: 0 DeclaredPredicates, 120 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-06-24 21:15:47,511 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:15:47,511 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:15:47,511 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:15:47,511 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:15:47,511 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 113 [2018-06-24 21:15:47,511 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:15:47,511 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:15:47,511 INFO ]: Interpolant automaton has 7 states. [2018-06-24 21:15:47,511 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:15:47,511 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:15:47,513 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:15:47,515 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:15:47 BasicIcfg [2018-06-24 21:15:47,515 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:15:47,516 INFO ]: Toolchain (without parser) took 11186.36 ms. Allocated memory was 309.3 MB in the beginning and 541.6 MB in the end (delta: 232.3 MB). Free memory was 260.7 MB in the beginning and 458.3 MB in the end (delta: -197.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 3.6 GB. [2018-06-24 21:15:47,516 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:15:47,520 INFO ]: ChcToBoogie took 65.36 ms. Allocated memory is still 309.3 MB. Free memory was 260.7 MB in the beginning and 258.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:15:47,520 INFO ]: Boogie Preprocessor took 44.69 ms. Allocated memory is still 309.3 MB. Free memory was 258.7 MB in the beginning and 256.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:15:47,521 INFO ]: RCFGBuilder took 420.03 ms. Allocated memory is still 309.3 MB. Free memory was 256.7 MB in the beginning and 244.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:15:47,525 INFO ]: BlockEncodingV2 took 416.71 ms. Allocated memory is still 309.3 MB. Free memory was 243.7 MB in the beginning and 232.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:15:47,526 INFO ]: TraceAbstraction took 10221.55 ms. Allocated memory was 309.3 MB in the beginning and 541.6 MB in the end (delta: 232.3 MB). Free memory was 232.7 MB in the beginning and 458.3 MB in the end (delta: -225.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 3.6 GB. [2018-06-24 21:15:47,529 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 29 locations, 41 edges - StatisticsResult: Encoded RCFG 15 locations, 28 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 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 65.36 ms. Allocated memory is still 309.3 MB. Free memory was 260.7 MB in the beginning and 258.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 44.69 ms. Allocated memory is still 309.3 MB. Free memory was 258.7 MB in the beginning and 256.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 420.03 ms. Allocated memory is still 309.3 MB. Free memory was 256.7 MB in the beginning and 244.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 416.71 ms. Allocated memory is still 309.3 MB. Free memory was 243.7 MB in the beginning and 232.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 10221.55 ms. Allocated memory was 309.3 MB in the beginning and 541.6 MB in the end (delta: 232.3 MB). Free memory was 232.7 MB in the beginning and 458.3 MB in the end (delta: -225.6 MB). Peak memory consumption was 6.6 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, 15 locations, 1 error locations. SAFE Result, 10.1s OverallTime, 11 OverallIterations, 9 TraceHistogramMax, 6.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 419 SDtfs, 296 SDslu, 841 SDs, 0 SdLazy, 2876 SolverSat, 787 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 433 GetRequests, 302 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=10, 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: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 308 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 405 NumberOfCodeBlocks, 405 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 392 ConstructedInterpolants, 0 QuantifiedInterpolants, 42609 SizeOfPredicates, 71 NumberOfNonLiveVariables, 3181 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 1620/1710 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/dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-15-47-544.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-15-47-544.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-15-47-544.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-15-47-544.csv Received shutdown request...