java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/reve/023-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:10:19,526 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:10:19,527 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:10:19,540 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:10:19,540 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:10:19,541 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:10:19,542 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:10:19,550 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:10:19,552 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:10:19,554 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:10:19,555 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:10:19,555 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:10:19,556 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:10:19,559 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:10:19,560 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:10:19,561 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:10:19,563 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:10:19,565 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:10:19,567 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:10:19,569 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:10:19,570 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:10:19,571 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:10:19,573 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:10:19,574 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:10:19,574 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:10:19,575 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:10:19,576 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:10:19,576 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:10:19,577 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:10:19,578 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:10:19,578 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:10:19,579 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:10:19,579 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:10:19,579 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:10:19,580 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:10:19,581 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:10:19,581 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:10:19,595 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:10:19,595 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:10:19,595 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:10:19,596 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:10:19,597 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:10:19,597 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:10:19,597 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:10:19,597 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:10:19,597 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:10:19,598 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:10:19,598 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:10:19,598 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:10:19,598 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:10:19,598 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:10:19,599 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:10:19,599 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:10:19,599 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:10:19,599 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:10:19,599 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:10:19,599 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:10:19,600 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:10:19,601 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:10:19,601 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:10:19,643 INFO ]: Repository-Root is: /tmp [2018-06-26 18:10:19,654 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:10:19,657 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:10:19,658 INFO ]: Initializing SmtParser... [2018-06-26 18:10:19,658 INFO ]: SmtParser initialized [2018-06-26 18:10:19,658 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/023-horn.smt2 [2018-06-26 18:10:19,659 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 18:10:19,752 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/023-horn.smt2 unknown [2018-06-26 18:10:19,918 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/023-horn.smt2 [2018-06-26 18:10:19,928 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:10:19,934 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:10:19,935 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:10:19,935 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:10:19,935 INFO ]: ChcToBoogie initialized [2018-06-26 18:10:19,939 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:10:19" (1/1) ... [2018-06-26 18:10:19,995 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:10:19 Unit [2018-06-26 18:10:19,995 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:10:19,996 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:10:19,996 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:10:19,996 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:10:20,017 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:10:19" (1/1) ... [2018-06-26 18:10:20,017 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:10:19" (1/1) ... [2018-06-26 18:10:20,025 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:10:19" (1/1) ... [2018-06-26 18:10:20,025 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:10:19" (1/1) ... [2018-06-26 18:10:20,027 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:10:19" (1/1) ... [2018-06-26 18:10:20,029 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:10:19" (1/1) ... [2018-06-26 18:10:20,030 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:10:19" (1/1) ... [2018-06-26 18:10:20,031 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:10:20,032 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:10:20,032 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:10:20,032 INFO ]: RCFGBuilder initialized [2018-06-26 18:10:20,034 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:10:19" (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) [2018-06-26 18:10:20,047 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:10:20,047 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:10:20,047 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:10:20,047 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:10:20,047 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:10:20,047 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 [2018-06-26 18:10:20,225 INFO ]: Using library mode [2018-06-26 18:10:20,226 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:10:20 BoogieIcfgContainer [2018-06-26 18:10:20,226 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:10:20,226 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:10:20,226 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:10:20,227 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:10:20,228 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:10:20" (1/1) ... [2018-06-26 18:10:20,240 INFO ]: Initial Icfg 10 locations, 12 edges [2018-06-26 18:10:20,241 INFO ]: Using Remove infeasible edges [2018-06-26 18:10:20,242 INFO ]: Using Maximize final states [2018-06-26 18:10:20,242 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:10:20,242 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:10:20,244 INFO ]: Using Remove sink states [2018-06-26 18:10:20,245 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:10:20,245 INFO ]: Using Use SBE [2018-06-26 18:10:20,250 INFO ]: SBE split 0 edges [2018-06-26 18:10:20,256 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 18:10:20,258 INFO ]: 0 new accepting states [2018-06-26 18:10:20,304 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-26 18:10:20,306 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:10:20,319 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:10:20,319 INFO ]: 0 new accepting states [2018-06-26 18:10:20,319 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:10:20,320 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:10:20,320 INFO ]: Encoded RCFG 6 locations, 8 edges [2018-06-26 18:10:20,320 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:10:20 BasicIcfg [2018-06-26 18:10:20,320 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:10:20,321 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:10:20,321 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:10:20,324 INFO ]: TraceAbstraction initialized [2018-06-26 18:10:20,324 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:10:19" (1/4) ... [2018-06-26 18:10:20,325 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a07cea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:10:20, skipping insertion in model container [2018-06-26 18:10:20,325 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:10:19" (2/4) ... [2018-06-26 18:10:20,325 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a07cea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:10:20, skipping insertion in model container [2018-06-26 18:10:20,326 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:10:20" (3/4) ... [2018-06-26 18:10:20,326 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a07cea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:10:20, skipping insertion in model container [2018-06-26 18:10:20,326 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:10:20" (4/4) ... [2018-06-26 18:10:20,327 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:10:20,336 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:10:20,344 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:10:20,402 INFO ]: Using default assertion order modulation [2018-06-26 18:10:20,403 INFO ]: Interprodecural is true [2018-06-26 18:10:20,403 INFO ]: Hoare is false [2018-06-26 18:10:20,403 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:10:20,403 INFO ]: Backedges is TWOTRACK [2018-06-26 18:10:20,403 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:10:20,403 INFO ]: Difference is false [2018-06-26 18:10:20,403 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:10:20,403 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:10:20,414 INFO ]: Start isEmpty. Operand 6 states. [2018-06-26 18:10:20,426 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:10:20,426 INFO ]: Found error trace [2018-06-26 18:10:20,426 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:10:20,426 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:10:20,431 INFO ]: Analyzing trace with hash 37311172, now seen corresponding path program 1 times [2018-06-26 18:10:20,432 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:10:20,432 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:10:20,464 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:20,464 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:10:20,464 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:20,497 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:20,546 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:10:20,547 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:10:20,547 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:10:20,548 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:10:20,560 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:10:20,560 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:10:20,563 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-26 18:10:20,673 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:10:20,673 INFO ]: Finished difference Result 7 states and 11 transitions. [2018-06-26 18:10:20,674 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:10:20,675 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:10:20,675 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:10:20,682 INFO ]: With dead ends: 7 [2018-06-26 18:10:20,682 INFO ]: Without dead ends: 7 [2018-06-26 18:10:20,684 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 18:10:20,697 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-26 18:10:20,724 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-26 18:10:20,725 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-26 18:10:20,725 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-26 18:10:20,726 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 5 [2018-06-26 18:10:20,726 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:10:20,727 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-26 18:10:20,727 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:10:20,727 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-26 18:10:20,727 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:10:20,727 INFO ]: Found error trace [2018-06-26 18:10:20,727 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:10:20,727 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:10:20,727 INFO ]: Analyzing trace with hash 1156320714, now seen corresponding path program 1 times [2018-06-26 18:10:20,727 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:10:20,727 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:10:20,728 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:20,728 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:10:20,728 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:20,748 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:20,927 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:10:20,927 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:10:20,927 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-26 18:10:20,943 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:10:20,987 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:20,994 INFO ]: Computing forward predicates... [2018-06-26 18:10:21,100 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:10:21,120 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:10:21,120 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-26 18:10:21,120 INFO ]: Interpolant automaton has 6 states [2018-06-26 18:10:21,120 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 18:10:21,120 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:10:21,121 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 6 states. [2018-06-26 18:10:21,500 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:10:21,500 INFO ]: Finished difference Result 14 states and 32 transitions. [2018-06-26 18:10:21,501 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-26 18:10:21,501 INFO ]: Start accepts. Automaton has 6 states. Word has length 6 [2018-06-26 18:10:21,501 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:10:21,501 INFO ]: With dead ends: 14 [2018-06-26 18:10:21,501 INFO ]: Without dead ends: 14 [2018-06-26 18:10:21,502 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-06-26 18:10:21,502 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-26 18:10:21,503 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 8. [2018-06-26 18:10:21,503 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 18:10:21,504 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 14 transitions. [2018-06-26 18:10:21,504 INFO ]: Start accepts. Automaton has 8 states and 14 transitions. Word has length 6 [2018-06-26 18:10:21,504 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:10:21,504 INFO ]: Abstraction has 8 states and 14 transitions. [2018-06-26 18:10:21,504 INFO ]: Interpolant automaton has 6 states. [2018-06-26 18:10:21,504 INFO ]: Start isEmpty. Operand 8 states and 14 transitions. [2018-06-26 18:10:21,504 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 18:10:21,504 INFO ]: Found error trace [2018-06-26 18:10:21,505 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-26 18:10:21,505 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:10:21,505 INFO ]: Analyzing trace with hash 1485878148, now seen corresponding path program 2 times [2018-06-26 18:10:21,505 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:10:21,505 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:10:21,506 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:21,506 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:10:21,506 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:21,516 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:21,634 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:10:21,634 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:10:21,634 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:10:21,648 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-26 18:10:21,701 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-26 18:10:21,701 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:21,703 INFO ]: Computing forward predicates... [2018-06-26 18:10:21,740 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:10:21,759 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:10:21,759 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-26 18:10:21,760 INFO ]: Interpolant automaton has 8 states [2018-06-26 18:10:21,760 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-26 18:10:21,760 INFO ]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-06-26 18:10:21,760 INFO ]: Start difference. First operand 8 states and 14 transitions. Second operand 8 states. [2018-06-26 18:10:22,231 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:10:22,231 INFO ]: Finished difference Result 21 states and 53 transitions. [2018-06-26 18:10:22,231 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-26 18:10:22,231 INFO ]: Start accepts. Automaton has 8 states. Word has length 7 [2018-06-26 18:10:22,231 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:10:22,232 INFO ]: With dead ends: 21 [2018-06-26 18:10:22,232 INFO ]: Without dead ends: 21 [2018-06-26 18:10:22,233 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2018-06-26 18:10:22,233 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-26 18:10:22,235 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 9. [2018-06-26 18:10:22,235 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 18:10:22,235 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 17 transitions. [2018-06-26 18:10:22,235 INFO ]: Start accepts. Automaton has 9 states and 17 transitions. Word has length 7 [2018-06-26 18:10:22,235 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:10:22,235 INFO ]: Abstraction has 9 states and 17 transitions. [2018-06-26 18:10:22,235 INFO ]: Interpolant automaton has 8 states. [2018-06-26 18:10:22,235 INFO ]: Start isEmpty. Operand 9 states and 17 transitions. [2018-06-26 18:10:22,236 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-26 18:10:22,236 INFO ]: Found error trace [2018-06-26 18:10:22,236 INFO ]: trace histogram [3, 1, 1, 1, 1, 1] [2018-06-26 18:10:22,236 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:10:22,236 INFO ]: Analyzing trace with hash -1182743286, now seen corresponding path program 3 times [2018-06-26 18:10:22,236 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:10:22,236 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:10:22,237 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:22,237 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-26 18:10:22,237 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:22,254 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:22,617 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:10:22,617 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:10:22,617 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 18:10:22,622 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-26 18:10:22,639 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-06-26 18:10:22,639 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:22,640 INFO ]: Computing forward predicates... [2018-06-26 18:10:22,691 INFO ]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-26 18:10:22,711 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:10:22,711 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2018-06-26 18:10:22,711 INFO ]: Interpolant automaton has 7 states [2018-06-26 18:10:22,712 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-26 18:10:22,712 INFO ]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-06-26 18:10:22,712 INFO ]: Start difference. First operand 9 states and 17 transitions. Second operand 7 states. [2018-06-26 18:10:22,831 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:10:22,831 INFO ]: Finished difference Result 20 states and 49 transitions. [2018-06-26 18:10:22,832 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-26 18:10:22,832 INFO ]: Start accepts. Automaton has 7 states. Word has length 8 [2018-06-26 18:10:22,832 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:10:22,832 INFO ]: With dead ends: 20 [2018-06-26 18:10:22,832 INFO ]: Without dead ends: 20 [2018-06-26 18:10:22,833 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-06-26 18:10:22,833 INFO ]: Start minimizeSevpa. Operand 20 states. [2018-06-26 18:10:22,834 INFO ]: Finished minimizeSevpa. Reduced states from 20 to 11. [2018-06-26 18:10:22,834 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-26 18:10:22,835 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 22 transitions. [2018-06-26 18:10:22,835 INFO ]: Start accepts. Automaton has 11 states and 22 transitions. Word has length 8 [2018-06-26 18:10:22,835 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:10:22,835 INFO ]: Abstraction has 11 states and 22 transitions. [2018-06-26 18:10:22,835 INFO ]: Interpolant automaton has 7 states. [2018-06-26 18:10:22,835 INFO ]: Start isEmpty. Operand 11 states and 22 transitions. [2018-06-26 18:10:22,835 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-26 18:10:22,835 INFO ]: Found error trace [2018-06-26 18:10:22,835 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2018-06-26 18:10:22,836 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:10:22,836 INFO ]: Analyzing trace with hash -1418125435, now seen corresponding path program 1 times [2018-06-26 18:10:22,836 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:10:22,836 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:10:22,836 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:22,836 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-26 18:10:22,837 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:22,849 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:22,921 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:10:22,921 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:10:22,921 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:10:22,929 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:10:22,954 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:22,956 INFO ]: Computing forward predicates... [2018-06-26 18:10:22,997 INFO ]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:10:23,018 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:10:23,018 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2018-06-26 18:10:23,018 INFO ]: Interpolant automaton has 11 states [2018-06-26 18:10:23,018 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-26 18:10:23,018 INFO ]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-06-26 18:10:23,019 INFO ]: Start difference. First operand 11 states and 22 transitions. Second operand 11 states. [2018-06-26 18:10:23,806 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:10:23,806 INFO ]: Finished difference Result 32 states and 85 transitions. [2018-06-26 18:10:23,809 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-06-26 18:10:23,809 INFO ]: Start accepts. Automaton has 11 states. Word has length 9 [2018-06-26 18:10:23,809 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:10:23,810 INFO ]: With dead ends: 32 [2018-06-26 18:10:23,810 INFO ]: Without dead ends: 32 [2018-06-26 18:10:23,810 INFO ]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=254, Invalid=502, Unknown=0, NotChecked=0, Total=756 [2018-06-26 18:10:23,811 INFO ]: Start minimizeSevpa. Operand 32 states. [2018-06-26 18:10:23,813 INFO ]: Finished minimizeSevpa. Reduced states from 32 to 12. [2018-06-26 18:10:23,814 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-26 18:10:23,814 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 25 transitions. [2018-06-26 18:10:23,814 INFO ]: Start accepts. Automaton has 12 states and 25 transitions. Word has length 9 [2018-06-26 18:10:23,814 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:10:23,814 INFO ]: Abstraction has 12 states and 25 transitions. [2018-06-26 18:10:23,814 INFO ]: Interpolant automaton has 11 states. [2018-06-26 18:10:23,814 INFO ]: Start isEmpty. Operand 12 states and 25 transitions. [2018-06-26 18:10:23,815 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-26 18:10:23,815 INFO ]: Found error trace [2018-06-26 18:10:23,815 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2018-06-26 18:10:23,815 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:10:23,815 INFO ]: Analyzing trace with hash -1012541143, now seen corresponding path program 2 times [2018-06-26 18:10:23,815 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:10:23,815 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:10:23,816 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:23,816 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:10:23,816 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:23,830 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:23,913 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:10:23,913 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:10:23,913 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:10:23,924 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-26 18:10:23,955 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-26 18:10:23,955 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:23,957 INFO ]: Computing forward predicates... [2018-06-26 18:10:24,026 INFO ]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:10:24,046 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:10:24,046 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2018-06-26 18:10:24,046 INFO ]: Interpolant automaton has 13 states [2018-06-26 18:10:24,046 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-26 18:10:24,046 INFO ]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-06-26 18:10:24,046 INFO ]: Start difference. First operand 12 states and 25 transitions. Second operand 13 states. [2018-06-26 18:10:24,684 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:10:24,684 INFO ]: Finished difference Result 43 states and 118 transitions. [2018-06-26 18:10:24,685 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-06-26 18:10:24,685 INFO ]: Start accepts. Automaton has 13 states. Word has length 10 [2018-06-26 18:10:24,685 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:10:24,686 INFO ]: With dead ends: 43 [2018-06-26 18:10:24,686 INFO ]: Without dead ends: 43 [2018-06-26 18:10:24,687 INFO ]: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=476, Invalid=1006, Unknown=0, NotChecked=0, Total=1482 [2018-06-26 18:10:24,687 INFO ]: Start minimizeSevpa. Operand 43 states. [2018-06-26 18:10:24,690 INFO ]: Finished minimizeSevpa. Reduced states from 43 to 13. [2018-06-26 18:10:24,690 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-26 18:10:24,690 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 28 transitions. [2018-06-26 18:10:24,690 INFO ]: Start accepts. Automaton has 13 states and 28 transitions. Word has length 10 [2018-06-26 18:10:24,690 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:10:24,690 INFO ]: Abstraction has 13 states and 28 transitions. [2018-06-26 18:10:24,690 INFO ]: Interpolant automaton has 13 states. [2018-06-26 18:10:24,690 INFO ]: Start isEmpty. Operand 13 states and 28 transitions. [2018-06-26 18:10:24,691 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-26 18:10:24,691 INFO ]: Found error trace [2018-06-26 18:10:24,691 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2018-06-26 18:10:24,691 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:10:24,691 INFO ]: Analyzing trace with hash -1324329979, now seen corresponding path program 3 times [2018-06-26 18:10:24,691 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:10:24,691 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:10:24,692 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:24,692 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-26 18:10:24,692 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:24,713 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:24,761 INFO ]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:10:24,761 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:10:24,761 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:10:24,773 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-26 18:10:24,786 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-26 18:10:24,786 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:24,788 INFO ]: Computing forward predicates... [2018-06-26 18:10:24,820 INFO ]: Checked inductivity of 21 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-26 18:10:24,840 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:10:24,840 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2018-06-26 18:10:24,840 INFO ]: Interpolant automaton has 10 states [2018-06-26 18:10:24,840 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-26 18:10:24,840 INFO ]: CoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2018-06-26 18:10:24,841 INFO ]: Start difference. First operand 13 states and 28 transitions. Second operand 10 states. [2018-06-26 18:10:24,887 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:10:24,887 INFO ]: Finished difference Result 35 states and 92 transitions. [2018-06-26 18:10:24,887 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-26 18:10:24,887 INFO ]: Start accepts. Automaton has 10 states. Word has length 11 [2018-06-26 18:10:24,887 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:10:24,888 INFO ]: With dead ends: 35 [2018-06-26 18:10:24,888 INFO ]: Without dead ends: 34 [2018-06-26 18:10:24,888 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2018-06-26 18:10:24,888 INFO ]: Start minimizeSevpa. Operand 34 states. [2018-06-26 18:10:24,890 INFO ]: Finished minimizeSevpa. Reduced states from 34 to 13. [2018-06-26 18:10:24,890 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-26 18:10:24,890 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 27 transitions. [2018-06-26 18:10:24,890 INFO ]: Start accepts. Automaton has 13 states and 27 transitions. Word has length 11 [2018-06-26 18:10:24,891 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:10:24,891 INFO ]: Abstraction has 13 states and 27 transitions. [2018-06-26 18:10:24,891 INFO ]: Interpolant automaton has 10 states. [2018-06-26 18:10:24,891 INFO ]: Start isEmpty. Operand 13 states and 27 transitions. [2018-06-26 18:10:24,891 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-26 18:10:24,891 INFO ]: Found error trace [2018-06-26 18:10:24,891 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2018-06-26 18:10:24,891 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:10:24,891 INFO ]: Analyzing trace with hash -2006822293, now seen corresponding path program 1 times [2018-06-26 18:10:24,891 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:10:24,891 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:10:24,892 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:24,892 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-26 18:10:24,892 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:24,904 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:24,965 INFO ]: Checked inductivity of 28 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:10:24,965 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:10:24,966 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:10:24,972 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:10:24,989 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:24,991 INFO ]: Computing forward predicates... [2018-06-26 18:10:25,204 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:10:25,223 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:10:25,223 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2018-06-26 18:10:25,224 INFO ]: Interpolant automaton has 17 states [2018-06-26 18:10:25,224 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-26 18:10:25,224 INFO ]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-06-26 18:10:25,224 INFO ]: Start difference. First operand 13 states and 27 transitions. Second operand 17 states. [2018-06-26 18:10:26,125 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:10:26,125 INFO ]: Finished difference Result 71 states and 201 transitions. [2018-06-26 18:10:26,125 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-06-26 18:10:26,125 INFO ]: Start accepts. Automaton has 17 states. Word has length 12 [2018-06-26 18:10:26,125 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:10:26,127 INFO ]: With dead ends: 71 [2018-06-26 18:10:26,127 INFO ]: Without dead ends: 71 [2018-06-26 18:10:26,129 INFO ]: 0 DeclaredPredicates, 71 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1336, Invalid=3086, Unknown=0, NotChecked=0, Total=4422 [2018-06-26 18:10:26,130 INFO ]: Start minimizeSevpa. Operand 71 states. [2018-06-26 18:10:26,136 INFO ]: Finished minimizeSevpa. Reduced states from 71 to 15. [2018-06-26 18:10:26,136 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-26 18:10:26,137 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 33 transitions. [2018-06-26 18:10:26,137 INFO ]: Start accepts. Automaton has 15 states and 33 transitions. Word has length 12 [2018-06-26 18:10:26,137 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:10:26,137 INFO ]: Abstraction has 15 states and 33 transitions. [2018-06-26 18:10:26,137 INFO ]: Interpolant automaton has 17 states. [2018-06-26 18:10:26,137 INFO ]: Start isEmpty. Operand 15 states and 33 transitions. [2018-06-26 18:10:26,137 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-26 18:10:26,137 INFO ]: Found error trace [2018-06-26 18:10:26,137 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1] [2018-06-26 18:10:26,137 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:10:26,138 INFO ]: Analyzing trace with hash -2082274557, now seen corresponding path program 2 times [2018-06-26 18:10:26,138 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:10:26,138 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:10:26,138 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:26,138 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:10:26,138 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:26,168 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:26,236 INFO ]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:10:26,236 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:10:26,236 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:10:26,243 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-26 18:10:26,289 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-26 18:10:26,289 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:26,291 INFO ]: Computing forward predicates... [2018-06-26 18:10:26,723 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:10:26,751 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:10:26,751 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2018-06-26 18:10:26,751 INFO ]: Interpolant automaton has 19 states [2018-06-26 18:10:26,751 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-26 18:10:26,751 INFO ]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-06-26 18:10:26,751 INFO ]: Start difference. First operand 15 states and 33 transitions. Second operand 19 states. [2018-06-26 18:10:28,354 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:10:28,400 INFO ]: Finished difference Result 88 states and 252 transitions. [2018-06-26 18:10:28,400 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-06-26 18:10:28,400 INFO ]: Start accepts. Automaton has 19 states. Word has length 13 [2018-06-26 18:10:28,400 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:10:28,402 INFO ]: With dead ends: 88 [2018-06-26 18:10:28,402 INFO ]: Without dead ends: 88 [2018-06-26 18:10:28,403 INFO ]: 0 DeclaredPredicates, 88 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2367 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2062, Invalid=4910, Unknown=0, NotChecked=0, Total=6972 [2018-06-26 18:10:28,403 INFO ]: Start minimizeSevpa. Operand 88 states. [2018-06-26 18:10:28,407 INFO ]: Finished minimizeSevpa. Reduced states from 88 to 16. [2018-06-26 18:10:28,407 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-26 18:10:28,407 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 36 transitions. [2018-06-26 18:10:28,407 INFO ]: Start accepts. Automaton has 16 states and 36 transitions. Word has length 13 [2018-06-26 18:10:28,407 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:10:28,407 INFO ]: Abstraction has 16 states and 36 transitions. [2018-06-26 18:10:28,407 INFO ]: Interpolant automaton has 19 states. [2018-06-26 18:10:28,407 INFO ]: Start isEmpty. Operand 16 states and 36 transitions. [2018-06-26 18:10:28,409 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-26 18:10:28,409 INFO ]: Found error trace [2018-06-26 18:10:28,409 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1] [2018-06-26 18:10:28,409 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:10:28,409 INFO ]: Analyzing trace with hash -126327445, now seen corresponding path program 3 times [2018-06-26 18:10:28,409 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:10:28,409 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:10:28,410 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:28,410 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-26 18:10:28,410 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:10:28,426 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:28,520 INFO ]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:10:28,520 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:10:28,520 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:10:28,527 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-26 18:10:28,572 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-26 18:10:28,572 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:10:28,574 INFO ]: Computing forward predicates... [2018-06-26 18:10:28,602 INFO ]: Checked inductivity of 45 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-26 18:10:28,621 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:10:28,621 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4] total 14 [2018-06-26 18:10:28,621 INFO ]: Interpolant automaton has 14 states [2018-06-26 18:10:28,621 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-26 18:10:28,621 INFO ]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2018-06-26 18:10:28,621 INFO ]: Start difference. First operand 16 states and 36 transitions. Second operand 14 states. [2018-06-26 18:10:28,702 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:10:28,702 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-26 18:10:28,702 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-26 18:10:28,702 INFO ]: Start accepts. Automaton has 14 states. Word has length 14 [2018-06-26 18:10:28,702 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:10:28,702 INFO ]: With dead ends: 13 [2018-06-26 18:10:28,702 INFO ]: Without dead ends: 0 [2018-06-26 18:10:28,702 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2018-06-26 18:10:28,702 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:10:28,702 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:10:28,702 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:10:28,702 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:10:28,703 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-06-26 18:10:28,703 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:10:28,703 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:10:28,703 INFO ]: Interpolant automaton has 14 states. [2018-06-26 18:10:28,703 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:10:28,703 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:10:28,705 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:10:28,706 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:10:28 BasicIcfg [2018-06-26 18:10:28,706 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:10:28,706 INFO ]: Toolchain (without parser) took 8777.83 ms. Allocated memory was 304.1 MB in the beginning and 410.5 MB in the end (delta: 106.4 MB). Free memory was 261.6 MB in the beginning and 266.4 MB in the end (delta: -4.9 MB). Peak memory consumption was 101.6 MB. Max. memory is 3.6 GB. [2018-06-26 18:10:28,708 INFO ]: SmtParser took 0.04 ms. Allocated memory is still 304.1 MB. Free memory is still 269.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:10:28,708 INFO ]: ChcToBoogie took 60.30 ms. Allocated memory is still 304.1 MB. Free memory was 260.6 MB in the beginning and 258.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:10:28,709 INFO ]: Boogie Preprocessor took 35.57 ms. Allocated memory is still 304.1 MB. Free memory was 258.6 MB in the beginning and 257.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-26 18:10:28,709 INFO ]: RCFGBuilder took 194.14 ms. Allocated memory is still 304.1 MB. Free memory was 257.6 MB in the beginning and 249.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:10:28,709 INFO ]: BlockEncodingV2 took 93.92 ms. Allocated memory is still 304.1 MB. Free memory was 249.6 MB in the beginning and 247.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:10:28,712 INFO ]: TraceAbstraction took 8384.87 ms. Allocated memory was 304.1 MB in the beginning and 410.5 MB in the end (delta: 106.4 MB). Free memory was 247.6 MB in the beginning and 266.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 87.6 MB. Max. memory is 3.6 GB. [2018-06-26 18:10:28,716 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 12 edges - StatisticsResult: Encoded RCFG 6 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.04 ms. Allocated memory is still 304.1 MB. Free memory is still 269.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 60.30 ms. Allocated memory is still 304.1 MB. Free memory was 260.6 MB in the beginning and 258.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 35.57 ms. Allocated memory is still 304.1 MB. Free memory was 258.6 MB in the beginning and 257.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 194.14 ms. Allocated memory is still 304.1 MB. Free memory was 257.6 MB in the beginning and 249.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 93.92 ms. Allocated memory is still 304.1 MB. Free memory was 249.6 MB in the beginning and 247.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 8384.87 ms. Allocated memory was 304.1 MB in the beginning and 410.5 MB in the end (delta: 106.4 MB). Free memory was 247.6 MB in the beginning and 266.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 87.6 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, 6 locations, 1 error locations. SAFE Result, 8.3s OverallTime, 10 OverallIterations, 8 TraceHistogramMax, 5.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 0 SDslu, 186 SDs, 0 SdLazy, 323 SolverSat, 893 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 336 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4433 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 226 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 185 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 3780 SizeOfPredicates, 6 NumberOfNonLiveVariables, 913 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 19 InterpolantComputations, 2 PerfectInterpolantSequences, 78/330 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/023-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-10-28-733.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/023-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-10-28-733.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/023-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-10-28-733.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/023-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-10-28-733.csv Received shutdown request...