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/mc91_95.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:22:13,588 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:22:13,590 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:22:13,602 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:22:13,602 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:22:13,603 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:22:13,604 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:22:13,606 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:22:13,608 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:22:13,609 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:22:13,611 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:22:13,611 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:22:13,612 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:22:13,613 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:22:13,614 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:22:13,618 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:22:13,619 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:22:13,632 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:22:13,633 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:22:13,634 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:22:13,635 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:22:13,637 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:22:13,637 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:22:13,637 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:22:13,638 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:22:13,643 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:22:13,644 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:22:13,644 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:22:13,645 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:22:13,646 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:22:13,646 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:22:13,647 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:22:13,647 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:22:13,648 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:22:13,648 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:22:13,649 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:22:13,661 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:22:13,661 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:22:13,662 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:22:13,662 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:22:13,663 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:22:13,663 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:22:13,663 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:22:13,664 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:22:13,664 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:22:13,664 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:22:13,664 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:22:13,664 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:22:13,665 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:22:13,665 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:22:13,665 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:22:13,665 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:22:13,665 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:22:13,665 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:22:13,666 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:22:13,666 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:22:13,666 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:22:13,667 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:22:13,668 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:22:13,721 INFO ]: Repository-Root is: /tmp [2018-06-24 21:22:13,739 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:22:13,745 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:22:13,746 INFO ]: Initializing SmtParser... [2018-06-24 21:22:13,747 INFO ]: SmtParser initialized [2018-06-24 21:22:13,747 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/mc91_95.smt2 [2018-06-24 21:22:13,748 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 21:22:13,838 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/mc91_95.smt2 unknown [2018-06-24 21:22:13,985 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/mc91_95.smt2 [2018-06-24 21:22:13,989 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:22:13,997 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:22:13,997 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:22:13,997 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:22:13,998 INFO ]: ChcToBoogie initialized [2018-06-24 21:22:14,001 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:22:13" (1/1) ... [2018-06-24 21:22:14,048 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:14 Unit [2018-06-24 21:22:14,048 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:22:14,048 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:22:14,048 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:22:14,049 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:22:14,064 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:14" (1/1) ... [2018-06-24 21:22:14,064 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:14" (1/1) ... [2018-06-24 21:22:14,068 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:14" (1/1) ... [2018-06-24 21:22:14,068 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:14" (1/1) ... [2018-06-24 21:22:14,070 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:14" (1/1) ... [2018-06-24 21:22:14,073 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:14" (1/1) ... [2018-06-24 21:22:14,074 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:14" (1/1) ... [2018-06-24 21:22:14,075 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:22:14,076 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:22:14,077 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:22:14,077 INFO ]: RCFGBuilder initialized [2018-06-24 21:22:14,078 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:14" (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 21:22:14,090 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:22:14,090 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:22:14,090 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:22:14,090 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:22:14,090 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:22:14,090 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 21:22:14,260 INFO ]: Using library mode [2018-06-24 21:22:14,260 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:22:14 BoogieIcfgContainer [2018-06-24 21:22:14,260 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:22:14,270 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:22:14,270 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:22:14,271 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:22:14,272 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:22:14" (1/1) ... [2018-06-24 21:22:14,296 INFO ]: Initial Icfg 13 locations, 16 edges [2018-06-24 21:22:14,297 INFO ]: Using Remove infeasible edges [2018-06-24 21:22:14,298 INFO ]: Using Maximize final states [2018-06-24 21:22:14,298 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:22:14,299 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:22:14,301 INFO ]: Using Remove sink states [2018-06-24 21:22:14,302 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:22:14,302 INFO ]: Using Use SBE [2018-06-24 21:22:14,308 INFO ]: SBE split 0 edges [2018-06-24 21:22:14,315 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:22:14,317 INFO ]: 0 new accepting states [2018-06-24 21:22:14,342 INFO ]: Removed 7 edges and 3 locations by large block encoding [2018-06-24 21:22:14,344 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:22:14,345 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:22:14,345 INFO ]: 0 new accepting states [2018-06-24 21:22:14,346 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:22:14,346 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:22:14,346 INFO ]: Encoded RCFG 8 locations, 10 edges [2018-06-24 21:22:14,347 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:22:14 BasicIcfg [2018-06-24 21:22:14,347 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:22:14,348 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:22:14,348 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:22:14,351 INFO ]: TraceAbstraction initialized [2018-06-24 21:22:14,351 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:22:13" (1/4) ... [2018-06-24 21:22:14,352 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69acf119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:22:14, skipping insertion in model container [2018-06-24 21:22:14,352 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:14" (2/4) ... [2018-06-24 21:22:14,353 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69acf119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:22:14, skipping insertion in model container [2018-06-24 21:22:14,353 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:22:14" (3/4) ... [2018-06-24 21:22:14,353 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69acf119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:22:14, skipping insertion in model container [2018-06-24 21:22:14,353 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:22:14" (4/4) ... [2018-06-24 21:22:14,357 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:22:14,370 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:22:14,379 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:22:14,427 INFO ]: Using default assertion order modulation [2018-06-24 21:22:14,427 INFO ]: Interprodecural is true [2018-06-24 21:22:14,427 INFO ]: Hoare is false [2018-06-24 21:22:14,427 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:22:14,427 INFO ]: Backedges is TWOTRACK [2018-06-24 21:22:14,427 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:22:14,427 INFO ]: Difference is false [2018-06-24 21:22:14,427 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:22:14,428 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:22:14,441 INFO ]: Start isEmpty. Operand 8 states. [2018-06-24 21:22:14,460 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:22:14,460 INFO ]: Found error trace [2018-06-24 21:22:14,461 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:22:14,461 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:14,468 INFO ]: Analyzing trace with hash 33771907, now seen corresponding path program 1 times [2018-06-24 21:22:14,470 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:14,470 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:14,510 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:14,510 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:14,510 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:14,539 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:14,607 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:22:14,609 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:22:14,609 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:22:14,610 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:22:14,622 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:22:14,622 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:22:14,624 INFO ]: Start difference. First operand 8 states. Second operand 3 states. [2018-06-24 21:22:14,712 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:14,712 INFO ]: Finished difference Result 13 states and 17 transitions. [2018-06-24 21:22:14,713 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:22:14,714 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:22:14,714 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:14,722 INFO ]: With dead ends: 13 [2018-06-24 21:22:14,722 INFO ]: Without dead ends: 13 [2018-06-24 21:22:14,723 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 21:22:14,736 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-24 21:22:14,765 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-24 21:22:14,767 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-24 21:22:14,767 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2018-06-24 21:22:14,768 INFO ]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 5 [2018-06-24 21:22:14,779 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:14,779 INFO ]: Abstraction has 13 states and 17 transitions. [2018-06-24 21:22:14,779 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:22:14,779 INFO ]: Start isEmpty. Operand 13 states and 17 transitions. [2018-06-24 21:22:14,780 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:22:14,780 INFO ]: Found error trace [2018-06-24 21:22:14,780 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:22:14,780 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:14,780 INFO ]: Analyzing trace with hash 33801698, now seen corresponding path program 1 times [2018-06-24 21:22:14,780 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:14,780 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:14,781 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:14,781 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:14,781 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:14,791 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:14,833 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:22:14,833 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:22:14,833 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:22:14,835 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:22:14,835 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:22:14,835 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:22:14,835 INFO ]: Start difference. First operand 13 states and 17 transitions. Second operand 3 states. [2018-06-24 21:22:14,856 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:14,856 INFO ]: Finished difference Result 19 states and 25 transitions. [2018-06-24 21:22:14,857 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:22:14,857 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:22:14,857 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:14,857 INFO ]: With dead ends: 19 [2018-06-24 21:22:14,857 INFO ]: Without dead ends: 19 [2018-06-24 21:22:14,858 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 21:22:14,858 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-24 21:22:14,862 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-06-24 21:22:14,862 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-24 21:22:14,863 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2018-06-24 21:22:14,863 INFO ]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 5 [2018-06-24 21:22:14,863 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:14,863 INFO ]: Abstraction has 15 states and 19 transitions. [2018-06-24 21:22:14,863 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:22:14,863 INFO ]: Start isEmpty. Operand 15 states and 19 transitions. [2018-06-24 21:22:14,863 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-24 21:22:14,863 INFO ]: Found error trace [2018-06-24 21:22:14,863 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:22:14,864 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:14,864 INFO ]: Analyzing trace with hash 695440575, now seen corresponding path program 1 times [2018-06-24 21:22:14,864 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:14,864 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:14,865 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:14,865 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:14,865 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:14,879 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:15,054 INFO ]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:22:15,054 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:15,054 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 21:22:15,062 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:15,095 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:15,105 INFO ]: Computing forward predicates... [2018-06-24 21:22:15,366 INFO ]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:22:15,398 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:15,398 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-06-24 21:22:15,398 INFO ]: Interpolant automaton has 9 states [2018-06-24 21:22:15,398 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-24 21:22:15,398 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-24 21:22:15,399 INFO ]: Start difference. First operand 15 states and 19 transitions. Second operand 9 states. [2018-06-24 21:22:15,723 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:15,723 INFO ]: Finished difference Result 31 states and 47 transitions. [2018-06-24 21:22:15,724 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-24 21:22:15,724 INFO ]: Start accepts. Automaton has 9 states. Word has length 11 [2018-06-24 21:22:15,724 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:15,727 INFO ]: With dead ends: 31 [2018-06-24 21:22:15,727 INFO ]: Without dead ends: 31 [2018-06-24 21:22:15,727 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-06-24 21:22:15,727 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-24 21:22:15,734 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 23. [2018-06-24 21:22:15,734 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-24 21:22:15,735 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2018-06-24 21:22:15,735 INFO ]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 11 [2018-06-24 21:22:15,735 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:15,735 INFO ]: Abstraction has 23 states and 33 transitions. [2018-06-24 21:22:15,735 INFO ]: Interpolant automaton has 9 states. [2018-06-24 21:22:15,735 INFO ]: Start isEmpty. Operand 23 states and 33 transitions. [2018-06-24 21:22:15,737 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-24 21:22:15,737 INFO ]: Found error trace [2018-06-24 21:22:15,737 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-06-24 21:22:15,737 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:15,737 INFO ]: Analyzing trace with hash 107953538, now seen corresponding path program 2 times [2018-06-24 21:22:15,737 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:15,737 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:15,738 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:15,738 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:15,738 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:15,756 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:16,081 INFO ]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:22:16,081 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:16,081 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 21:22:16,090 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:22:16,117 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:22:16,117 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:16,119 INFO ]: Computing forward predicates... [2018-06-24 21:22:16,798 INFO ]: Checked inductivity of 18 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-24 21:22:16,817 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:16,817 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2018-06-24 21:22:16,817 INFO ]: Interpolant automaton has 20 states [2018-06-24 21:22:16,817 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-24 21:22:16,817 INFO ]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2018-06-24 21:22:16,818 INFO ]: Start difference. First operand 23 states and 33 transitions. Second operand 20 states. [2018-06-24 21:22:19,320 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:19,320 INFO ]: Finished difference Result 102 states and 197 transitions. [2018-06-24 21:22:19,342 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-06-24 21:22:19,342 INFO ]: Start accepts. Automaton has 20 states. Word has length 17 [2018-06-24 21:22:19,343 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:19,346 INFO ]: With dead ends: 102 [2018-06-24 21:22:19,346 INFO ]: Without dead ends: 75 [2018-06-24 21:22:19,348 INFO ]: 0 DeclaredPredicates, 102 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1771 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=911, Invalid=5409, Unknown=0, NotChecked=0, Total=6320 [2018-06-24 21:22:19,349 INFO ]: Start minimizeSevpa. Operand 75 states. [2018-06-24 21:22:19,374 INFO ]: Finished minimizeSevpa. Reduced states from 75 to 36. [2018-06-24 21:22:19,374 INFO ]: Start removeUnreachable. Operand 36 states. [2018-06-24 21:22:19,375 INFO ]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2018-06-24 21:22:19,375 INFO ]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 17 [2018-06-24 21:22:19,375 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:19,375 INFO ]: Abstraction has 36 states and 56 transitions. [2018-06-24 21:22:19,375 INFO ]: Interpolant automaton has 20 states. [2018-06-24 21:22:19,376 INFO ]: Start isEmpty. Operand 36 states and 56 transitions. [2018-06-24 21:22:19,377 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-24 21:22:19,377 INFO ]: Found error trace [2018-06-24 21:22:19,377 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-06-24 21:22:19,377 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:19,377 INFO ]: Analyzing trace with hash -1340995108, now seen corresponding path program 3 times [2018-06-24 21:22:19,377 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:19,377 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:19,378 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:19,378 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:19,378 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:19,402 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:19,527 INFO ]: Checked inductivity of 18 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-24 21:22:19,527 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:19,527 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:19,538 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-24 21:22:19,566 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-24 21:22:19,566 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:19,569 INFO ]: Computing forward predicates... [2018-06-24 21:22:19,729 INFO ]: Checked inductivity of 18 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-24 21:22:19,748 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:19,749 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-06-24 21:22:19,749 INFO ]: Interpolant automaton has 12 states [2018-06-24 21:22:19,749 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-24 21:22:19,749 INFO ]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-06-24 21:22:19,749 INFO ]: Start difference. First operand 36 states and 56 transitions. Second operand 12 states. [2018-06-24 21:22:19,954 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:19,954 INFO ]: Finished difference Result 68 states and 109 transitions. [2018-06-24 21:22:19,956 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-24 21:22:19,956 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-24 21:22:19,956 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:19,958 INFO ]: With dead ends: 68 [2018-06-24 21:22:19,958 INFO ]: Without dead ends: 68 [2018-06-24 21:22:19,959 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-06-24 21:22:19,959 INFO ]: Start minimizeSevpa. Operand 68 states. [2018-06-24 21:22:19,973 INFO ]: Finished minimizeSevpa. Reduced states from 68 to 40. [2018-06-24 21:22:19,973 INFO ]: Start removeUnreachable. Operand 40 states. [2018-06-24 21:22:19,975 INFO ]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2018-06-24 21:22:19,975 INFO ]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 17 [2018-06-24 21:22:19,975 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:19,975 INFO ]: Abstraction has 40 states and 66 transitions. [2018-06-24 21:22:19,975 INFO ]: Interpolant automaton has 12 states. [2018-06-24 21:22:19,975 INFO ]: Start isEmpty. Operand 40 states and 66 transitions. [2018-06-24 21:22:19,977 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-24 21:22:19,977 INFO ]: Found error trace [2018-06-24 21:22:19,977 INFO ]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2018-06-24 21:22:19,978 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:19,978 INFO ]: Analyzing trace with hash 2136569145, now seen corresponding path program 4 times [2018-06-24 21:22:19,978 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:19,978 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:19,979 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:19,979 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:19,979 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:19,995 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:20,151 INFO ]: Checked inductivity of 39 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-06-24 21:22:20,151 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:20,151 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:20,166 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-24 21:22:20,183 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-24 21:22:20,183 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:20,186 INFO ]: Computing forward predicates... [2018-06-24 21:22:20,226 INFO ]: Checked inductivity of 39 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-06-24 21:22:20,246 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:20,246 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-06-24 21:22:20,246 INFO ]: Interpolant automaton has 15 states [2018-06-24 21:22:20,246 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-24 21:22:20,246 INFO ]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-06-24 21:22:20,247 INFO ]: Start difference. First operand 40 states and 66 transitions. Second operand 15 states. [2018-06-24 21:22:20,450 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:20,450 INFO ]: Finished difference Result 78 states and 125 transitions. [2018-06-24 21:22:20,451 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-24 21:22:20,451 INFO ]: Start accepts. Automaton has 15 states. Word has length 23 [2018-06-24 21:22:20,451 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:20,453 INFO ]: With dead ends: 78 [2018-06-24 21:22:20,453 INFO ]: Without dead ends: 78 [2018-06-24 21:22:20,453 INFO ]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2018-06-24 21:22:20,453 INFO ]: Start minimizeSevpa. Operand 78 states. [2018-06-24 21:22:20,464 INFO ]: Finished minimizeSevpa. Reduced states from 78 to 46. [2018-06-24 21:22:20,464 INFO ]: Start removeUnreachable. Operand 46 states. [2018-06-24 21:22:20,466 INFO ]: Finished removeUnreachable. Reduced from 46 states to 46 states and 78 transitions. [2018-06-24 21:22:20,466 INFO ]: Start accepts. Automaton has 46 states and 78 transitions. Word has length 23 [2018-06-24 21:22:20,466 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:20,466 INFO ]: Abstraction has 46 states and 78 transitions. [2018-06-24 21:22:20,466 INFO ]: Interpolant automaton has 15 states. [2018-06-24 21:22:20,466 INFO ]: Start isEmpty. Operand 46 states and 78 transitions. [2018-06-24 21:22:20,469 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-24 21:22:20,469 INFO ]: Found error trace [2018-06-24 21:22:20,469 INFO ]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2018-06-24 21:22:20,469 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:20,470 INFO ]: Analyzing trace with hash 1709642108, now seen corresponding path program 5 times [2018-06-24 21:22:20,470 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:20,470 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:20,470 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:20,470 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:20,470 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:20,487 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:20,645 INFO ]: Checked inductivity of 68 backedges. 19 proven. 33 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-24 21:22:20,646 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:20,646 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:20,657 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-24 21:22:20,692 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-24 21:22:20,692 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:20,695 INFO ]: Computing forward predicates... [2018-06-24 21:22:21,012 INFO ]: Checked inductivity of 68 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-06-24 21:22:21,031 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:21,031 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 32 [2018-06-24 21:22:21,031 INFO ]: Interpolant automaton has 32 states [2018-06-24 21:22:21,032 INFO ]: Constructing interpolant automaton starting with 32 interpolants. [2018-06-24 21:22:21,032 INFO ]: CoverageRelationStatistics Valid=113, Invalid=879, Unknown=0, NotChecked=0, Total=992 [2018-06-24 21:22:21,032 INFO ]: Start difference. First operand 46 states and 78 transitions. Second operand 32 states. [2018-06-24 21:22:23,711 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:23,711 INFO ]: Finished difference Result 147 states and 293 transitions. [2018-06-24 21:22:23,711 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-06-24 21:22:23,711 INFO ]: Start accepts. Automaton has 32 states. Word has length 29 [2018-06-24 21:22:23,711 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:23,715 INFO ]: With dead ends: 147 [2018-06-24 21:22:23,715 INFO ]: Without dead ends: 147 [2018-06-24 21:22:23,718 INFO ]: 0 DeclaredPredicates, 154 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3663 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1927, Invalid=11183, Unknown=0, NotChecked=0, Total=13110 [2018-06-24 21:22:23,718 INFO ]: Start minimizeSevpa. Operand 147 states. [2018-06-24 21:22:23,740 INFO ]: Finished minimizeSevpa. Reduced states from 147 to 72. [2018-06-24 21:22:23,740 INFO ]: Start removeUnreachable. Operand 72 states. [2018-06-24 21:22:23,742 INFO ]: Finished removeUnreachable. Reduced from 72 states to 72 states and 128 transitions. [2018-06-24 21:22:23,743 INFO ]: Start accepts. Automaton has 72 states and 128 transitions. Word has length 29 [2018-06-24 21:22:23,743 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:23,743 INFO ]: Abstraction has 72 states and 128 transitions. [2018-06-24 21:22:23,743 INFO ]: Interpolant automaton has 32 states. [2018-06-24 21:22:23,743 INFO ]: Start isEmpty. Operand 72 states and 128 transitions. [2018-06-24 21:22:23,746 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-24 21:22:23,746 INFO ]: Found error trace [2018-06-24 21:22:23,746 INFO ]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2018-06-24 21:22:23,746 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:23,746 INFO ]: Analyzing trace with hash -272095530, now seen corresponding path program 6 times [2018-06-24 21:22:23,746 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:23,746 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:23,747 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:23,747 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:23,747 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:23,761 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:23,884 INFO ]: Checked inductivity of 68 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-24 21:22:23,884 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:23,884 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:23,892 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-24 21:22:23,926 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-06-24 21:22:23,926 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:23,928 INFO ]: Computing forward predicates... [2018-06-24 21:22:23,970 INFO ]: Checked inductivity of 68 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-24 21:22:24,001 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:24,001 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2018-06-24 21:22:24,001 INFO ]: Interpolant automaton has 18 states [2018-06-24 21:22:24,002 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-24 21:22:24,002 INFO ]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2018-06-24 21:22:24,002 INFO ]: Start difference. First operand 72 states and 128 transitions. Second operand 18 states. [2018-06-24 21:22:24,517 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:24,517 INFO ]: Finished difference Result 124 states and 213 transitions. [2018-06-24 21:22:24,519 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-24 21:22:24,519 INFO ]: Start accepts. Automaton has 18 states. Word has length 29 [2018-06-24 21:22:24,519 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:24,521 INFO ]: With dead ends: 124 [2018-06-24 21:22:24,521 INFO ]: Without dead ends: 124 [2018-06-24 21:22:24,521 INFO ]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2018-06-24 21:22:24,522 INFO ]: Start minimizeSevpa. Operand 124 states. [2018-06-24 21:22:24,535 INFO ]: Finished minimizeSevpa. Reduced states from 124 to 72. [2018-06-24 21:22:24,535 INFO ]: Start removeUnreachable. Operand 72 states. [2018-06-24 21:22:24,537 INFO ]: Finished removeUnreachable. Reduced from 72 states to 72 states and 128 transitions. [2018-06-24 21:22:24,537 INFO ]: Start accepts. Automaton has 72 states and 128 transitions. Word has length 29 [2018-06-24 21:22:24,538 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:24,538 INFO ]: Abstraction has 72 states and 128 transitions. [2018-06-24 21:22:24,538 INFO ]: Interpolant automaton has 18 states. [2018-06-24 21:22:24,538 INFO ]: Start isEmpty. Operand 72 states and 128 transitions. [2018-06-24 21:22:24,541 INFO ]: Finished isEmpty. Found accepting run of length 36 [2018-06-24 21:22:24,541 INFO ]: Found error trace [2018-06-24 21:22:24,541 INFO ]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1] [2018-06-24 21:22:24,541 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:24,541 INFO ]: Analyzing trace with hash 1977642675, now seen corresponding path program 7 times [2018-06-24 21:22:24,541 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:24,541 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:24,542 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:24,542 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:24,542 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:24,558 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:24,770 INFO ]: Checked inductivity of 105 backedges. 5 proven. 65 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-06-24 21:22:24,770 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:24,770 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) [2018-06-24 21:22:24,783 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:24,807 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:24,812 INFO ]: Computing forward predicates... [2018-06-24 21:22:24,844 INFO ]: Checked inductivity of 105 backedges. 5 proven. 65 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-06-24 21:22:24,864 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:24,864 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2018-06-24 21:22:24,864 INFO ]: Interpolant automaton has 21 states [2018-06-24 21:22:24,865 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-24 21:22:24,865 INFO ]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2018-06-24 21:22:24,865 INFO ]: Start difference. First operand 72 states and 128 transitions. Second operand 21 states. [2018-06-24 21:22:25,851 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:25,852 INFO ]: Finished difference Result 128 states and 217 transitions. [2018-06-24 21:22:25,852 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-24 21:22:25,852 INFO ]: Start accepts. Automaton has 21 states. Word has length 35 [2018-06-24 21:22:25,852 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:25,854 INFO ]: With dead ends: 128 [2018-06-24 21:22:25,854 INFO ]: Without dead ends: 128 [2018-06-24 21:22:25,855 INFO ]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=225, Invalid=831, Unknown=0, NotChecked=0, Total=1056 [2018-06-24 21:22:25,855 INFO ]: Start minimizeSevpa. Operand 128 states. [2018-06-24 21:22:25,873 INFO ]: Finished minimizeSevpa. Reduced states from 128 to 72. [2018-06-24 21:22:25,873 INFO ]: Start removeUnreachable. Operand 72 states. [2018-06-24 21:22:25,874 INFO ]: Finished removeUnreachable. Reduced from 72 states to 72 states and 128 transitions. [2018-06-24 21:22:25,874 INFO ]: Start accepts. Automaton has 72 states and 128 transitions. Word has length 35 [2018-06-24 21:22:25,875 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:25,875 INFO ]: Abstraction has 72 states and 128 transitions. [2018-06-24 21:22:25,875 INFO ]: Interpolant automaton has 21 states. [2018-06-24 21:22:25,875 INFO ]: Start isEmpty. Operand 72 states and 128 transitions. [2018-06-24 21:22:25,878 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-24 21:22:25,878 INFO ]: Found error trace [2018-06-24 21:22:25,878 INFO ]: trace histogram [7, 6, 6, 6, 6, 6, 1, 1, 1, 1] [2018-06-24 21:22:25,878 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:25,878 INFO ]: Analyzing trace with hash -1893163824, now seen corresponding path program 8 times [2018-06-24 21:22:25,878 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:25,878 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:25,879 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:25,879 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:25,879 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:25,900 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:27,098 INFO ]: Checked inductivity of 150 backedges. 6 proven. 93 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-06-24 21:22:27,098 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:27,098 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:27,111 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:22:27,142 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:22:27,142 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:27,147 INFO ]: Computing forward predicates... [2018-06-24 21:22:27,426 INFO ]: Checked inductivity of 150 backedges. 6 proven. 93 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-06-24 21:22:27,445 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:27,445 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-06-24 21:22:27,445 INFO ]: Interpolant automaton has 25 states [2018-06-24 21:22:27,445 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-24 21:22:27,445 INFO ]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2018-06-24 21:22:27,446 INFO ]: Start difference. First operand 72 states and 128 transitions. Second operand 25 states. [2018-06-24 21:22:28,143 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:28,143 INFO ]: Finished difference Result 138 states and 233 transitions. [2018-06-24 21:22:28,146 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-06-24 21:22:28,146 INFO ]: Start accepts. Automaton has 25 states. Word has length 41 [2018-06-24 21:22:28,146 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:28,148 INFO ]: With dead ends: 138 [2018-06-24 21:22:28,148 INFO ]: Without dead ends: 138 [2018-06-24 21:22:28,148 INFO ]: 0 DeclaredPredicates, 87 GetRequests, 38 SyntacticMatches, 12 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=320, Invalid=1162, Unknown=0, NotChecked=0, Total=1482 [2018-06-24 21:22:28,149 INFO ]: Start minimizeSevpa. Operand 138 states. [2018-06-24 21:22:28,159 INFO ]: Finished minimizeSevpa. Reduced states from 138 to 78. [2018-06-24 21:22:28,159 INFO ]: Start removeUnreachable. Operand 78 states. [2018-06-24 21:22:28,160 INFO ]: Finished removeUnreachable. Reduced from 78 states to 78 states and 140 transitions. [2018-06-24 21:22:28,160 INFO ]: Start accepts. Automaton has 78 states and 140 transitions. Word has length 41 [2018-06-24 21:22:28,160 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:28,161 INFO ]: Abstraction has 78 states and 140 transitions. [2018-06-24 21:22:28,161 INFO ]: Interpolant automaton has 25 states. [2018-06-24 21:22:28,161 INFO ]: Start isEmpty. Operand 78 states and 140 transitions. [2018-06-24 21:22:28,164 INFO ]: Finished isEmpty. Found accepting run of length 54 [2018-06-24 21:22:28,164 INFO ]: Found error trace [2018-06-24 21:22:28,164 INFO ]: trace histogram [9, 8, 8, 8, 8, 8, 1, 1, 1, 1] [2018-06-24 21:22:28,164 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:28,165 INFO ]: Analyzing trace with hash 1179174000, now seen corresponding path program 9 times [2018-06-24 21:22:28,165 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:28,165 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:28,165 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:28,165 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:28,165 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:28,183 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:28,856 INFO ]: Checked inductivity of 264 backedges. 39 proven. 147 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-06-24 21:22:28,856 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:28,856 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-24 21:22:28,870 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:29,031 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-06-24 21:22:29,031 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:29,035 INFO ]: Computing forward predicates... [2018-06-24 21:22:29,155 INFO ]: Checked inductivity of 264 backedges. 39 proven. 147 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-06-24 21:22:29,181 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:29,181 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 34 [2018-06-24 21:22:29,182 INFO ]: Interpolant automaton has 34 states [2018-06-24 21:22:29,182 INFO ]: Constructing interpolant automaton starting with 34 interpolants. [2018-06-24 21:22:29,182 INFO ]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2018-06-24 21:22:29,182 INFO ]: Start difference. First operand 78 states and 140 transitions. Second operand 34 states. [2018-06-24 21:22:30,376 WARN ]: Spent 154.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-06-24 21:22:32,323 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:32,323 INFO ]: Finished difference Result 156 states and 289 transitions. [2018-06-24 21:22:32,323 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-06-24 21:22:32,323 INFO ]: Start accepts. Automaton has 34 states. Word has length 53 [2018-06-24 21:22:32,324 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:32,326 INFO ]: With dead ends: 156 [2018-06-24 21:22:32,326 INFO ]: Without dead ends: 156 [2018-06-24 21:22:32,329 INFO ]: 0 DeclaredPredicates, 199 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3796 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2205, Invalid=11367, Unknown=0, NotChecked=0, Total=13572 [2018-06-24 21:22:32,330 INFO ]: Start minimizeSevpa. Operand 156 states. [2018-06-24 21:22:32,343 INFO ]: Finished minimizeSevpa. Reduced states from 156 to 87. [2018-06-24 21:22:32,343 INFO ]: Start removeUnreachable. Operand 87 states. [2018-06-24 21:22:32,345 INFO ]: Finished removeUnreachable. Reduced from 87 states to 87 states and 158 transitions. [2018-06-24 21:22:32,345 INFO ]: Start accepts. Automaton has 87 states and 158 transitions. Word has length 53 [2018-06-24 21:22:32,345 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:32,345 INFO ]: Abstraction has 87 states and 158 transitions. [2018-06-24 21:22:32,345 INFO ]: Interpolant automaton has 34 states. [2018-06-24 21:22:32,345 INFO ]: Start isEmpty. Operand 87 states and 158 transitions. [2018-06-24 21:22:32,349 INFO ]: Finished isEmpty. Found accepting run of length 60 [2018-06-24 21:22:32,349 INFO ]: Found error trace [2018-06-24 21:22:32,350 INFO ]: trace histogram [10, 9, 9, 9, 9, 9, 1, 1, 1, 1] [2018-06-24 21:22:32,350 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:32,350 INFO ]: Analyzing trace with hash -248057651, now seen corresponding path program 10 times [2018-06-24 21:22:32,350 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:32,350 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:32,350 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:32,350 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:32,350 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:32,379 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:32,897 INFO ]: Checked inductivity of 333 backedges. 44 proven. 188 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-06-24 21:22:32,897 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:32,897 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-24 21:22:32,912 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:32,950 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-24 21:22:32,950 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:32,957 INFO ]: Computing forward predicates... [2018-06-24 21:22:33,262 INFO ]: Checked inductivity of 333 backedges. 44 proven. 188 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-06-24 21:22:33,285 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:33,285 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 37 [2018-06-24 21:22:33,285 INFO ]: Interpolant automaton has 37 states [2018-06-24 21:22:33,285 INFO ]: Constructing interpolant automaton starting with 37 interpolants. [2018-06-24 21:22:33,286 INFO ]: CoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2018-06-24 21:22:33,286 INFO ]: Start difference. First operand 87 states and 158 transitions. Second operand 37 states. [2018-06-24 21:22:35,868 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:35,868 INFO ]: Finished difference Result 177 states and 330 transitions. [2018-06-24 21:22:35,868 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-06-24 21:22:35,868 INFO ]: Start accepts. Automaton has 37 states. Word has length 59 [2018-06-24 21:22:35,869 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:35,871 INFO ]: With dead ends: 177 [2018-06-24 21:22:35,871 INFO ]: Without dead ends: 177 [2018-06-24 21:22:35,874 INFO ]: 0 DeclaredPredicates, 224 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4915 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2783, Invalid=14247, Unknown=0, NotChecked=0, Total=17030 [2018-06-24 21:22:35,875 INFO ]: Start minimizeSevpa. Operand 177 states. [2018-06-24 21:22:35,892 INFO ]: Finished minimizeSevpa. Reduced states from 177 to 96. [2018-06-24 21:22:35,892 INFO ]: Start removeUnreachable. Operand 96 states. [2018-06-24 21:22:35,894 INFO ]: Finished removeUnreachable. Reduced from 96 states to 96 states and 176 transitions. [2018-06-24 21:22:35,894 INFO ]: Start accepts. Automaton has 96 states and 176 transitions. Word has length 59 [2018-06-24 21:22:35,895 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:35,895 INFO ]: Abstraction has 96 states and 176 transitions. [2018-06-24 21:22:35,895 INFO ]: Interpolant automaton has 37 states. [2018-06-24 21:22:35,895 INFO ]: Start isEmpty. Operand 96 states and 176 transitions. [2018-06-24 21:22:35,902 INFO ]: Finished isEmpty. Found accepting run of length 66 [2018-06-24 21:22:35,902 INFO ]: Found error trace [2018-06-24 21:22:35,902 INFO ]: trace histogram [11, 10, 10, 10, 10, 10, 1, 1, 1, 1] [2018-06-24 21:22:35,902 INFO ]: === Iteration 13 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:35,902 INFO ]: Analyzing trace with hash -76045462, now seen corresponding path program 11 times [2018-06-24 21:22:35,902 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:35,902 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:35,903 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:35,903 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:35,903 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:35,935 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:36,461 INFO ]: Checked inductivity of 410 backedges. 49 proven. 234 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-06-24 21:22:36,461 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:36,461 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:36,469 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-24 21:22:36,516 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2018-06-24 21:22:36,516 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:36,520 INFO ]: Computing forward predicates... [2018-06-24 21:22:36,647 INFO ]: Checked inductivity of 410 backedges. 49 proven. 234 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-06-24 21:22:36,666 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:36,667 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 40 [2018-06-24 21:22:36,667 INFO ]: Interpolant automaton has 40 states [2018-06-24 21:22:36,667 INFO ]: Constructing interpolant automaton starting with 40 interpolants. [2018-06-24 21:22:36,667 INFO ]: CoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2018-06-24 21:22:36,668 INFO ]: Start difference. First operand 96 states and 176 transitions. Second operand 40 states. [2018-06-24 21:22:38,117 WARN ]: Spent 176.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-06-24 21:22:39,607 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:39,607 INFO ]: Finished difference Result 198 states and 371 transitions. [2018-06-24 21:22:39,607 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-06-24 21:22:39,607 INFO ]: Start accepts. Automaton has 40 states. Word has length 65 [2018-06-24 21:22:39,608 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:39,610 INFO ]: With dead ends: 198 [2018-06-24 21:22:39,610 INFO ]: Without dead ends: 198 [2018-06-24 21:22:39,611 INFO ]: 0 DeclaredPredicates, 249 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6221 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3431, Invalid=17449, Unknown=0, NotChecked=0, Total=20880 [2018-06-24 21:22:39,611 INFO ]: Start minimizeSevpa. Operand 198 states. [2018-06-24 21:22:39,625 INFO ]: Finished minimizeSevpa. Reduced states from 198 to 105. [2018-06-24 21:22:39,626 INFO ]: Start removeUnreachable. Operand 105 states. [2018-06-24 21:22:39,633 INFO ]: Finished removeUnreachable. Reduced from 105 states to 105 states and 194 transitions. [2018-06-24 21:22:39,633 INFO ]: Start accepts. Automaton has 105 states and 194 transitions. Word has length 65 [2018-06-24 21:22:39,633 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:39,633 INFO ]: Abstraction has 105 states and 194 transitions. [2018-06-24 21:22:39,633 INFO ]: Interpolant automaton has 40 states. [2018-06-24 21:22:39,633 INFO ]: Start isEmpty. Operand 105 states and 194 transitions. [2018-06-24 21:22:39,638 INFO ]: Finished isEmpty. Found accepting run of length 72 [2018-06-24 21:22:39,638 INFO ]: Found error trace [2018-06-24 21:22:39,638 INFO ]: trace histogram [12, 11, 11, 11, 11, 11, 1, 1, 1, 1] [2018-06-24 21:22:39,638 INFO ]: === Iteration 14 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:39,638 INFO ]: Analyzing trace with hash -602067897, now seen corresponding path program 12 times [2018-06-24 21:22:39,638 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:39,638 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:39,639 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:39,639 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:39,639 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:39,667 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:40,471 INFO ]: Checked inductivity of 495 backedges. 54 proven. 285 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-06-24 21:22:40,471 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:40,471 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:40,483 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-24 21:22:40,530 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2018-06-24 21:22:40,530 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:40,535 INFO ]: Computing forward predicates... [2018-06-24 21:22:40,705 INFO ]: Checked inductivity of 495 backedges. 54 proven. 285 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-06-24 21:22:40,724 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:40,724 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 43 [2018-06-24 21:22:40,724 INFO ]: Interpolant automaton has 43 states [2018-06-24 21:22:40,725 INFO ]: Constructing interpolant automaton starting with 43 interpolants. [2018-06-24 21:22:40,725 INFO ]: CoverageRelationStatistics Valid=220, Invalid=1586, Unknown=0, NotChecked=0, Total=1806 [2018-06-24 21:22:40,725 INFO ]: Start difference. First operand 105 states and 194 transitions. Second operand 43 states. [2018-06-24 21:22:43,543 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:43,543 INFO ]: Finished difference Result 205 states and 378 transitions. [2018-06-24 21:22:43,543 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-06-24 21:22:43,543 INFO ]: Start accepts. Automaton has 43 states. Word has length 71 [2018-06-24 21:22:43,543 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:43,546 INFO ]: With dead ends: 205 [2018-06-24 21:22:43,546 INFO ]: Without dead ends: 205 [2018-06-24 21:22:43,548 INFO ]: 0 DeclaredPredicates, 269 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7222 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4032, Invalid=19838, Unknown=0, NotChecked=0, Total=23870 [2018-06-24 21:22:43,548 INFO ]: Start minimizeSevpa. Operand 205 states. [2018-06-24 21:22:43,561 INFO ]: Finished minimizeSevpa. Reduced states from 205 to 114. [2018-06-24 21:22:43,561 INFO ]: Start removeUnreachable. Operand 114 states. [2018-06-24 21:22:43,563 INFO ]: Finished removeUnreachable. Reduced from 114 states to 114 states and 212 transitions. [2018-06-24 21:22:43,564 INFO ]: Start accepts. Automaton has 114 states and 212 transitions. Word has length 71 [2018-06-24 21:22:43,564 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:43,564 INFO ]: Abstraction has 114 states and 212 transitions. [2018-06-24 21:22:43,564 INFO ]: Interpolant automaton has 43 states. [2018-06-24 21:22:43,564 INFO ]: Start isEmpty. Operand 114 states and 212 transitions. [2018-06-24 21:22:43,570 INFO ]: Finished isEmpty. Found accepting run of length 78 [2018-06-24 21:22:43,570 INFO ]: Found error trace [2018-06-24 21:22:43,570 INFO ]: trace histogram [13, 12, 12, 12, 12, 12, 1, 1, 1, 1] [2018-06-24 21:22:43,570 INFO ]: === Iteration 15 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:43,570 INFO ]: Analyzing trace with hash -415376540, now seen corresponding path program 13 times [2018-06-24 21:22:43,570 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:43,570 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:43,571 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:43,571 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:43,571 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:43,592 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:43,822 INFO ]: Checked inductivity of 588 backedges. 163 proven. 81 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2018-06-24 21:22:43,822 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:43,822 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:43,829 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:43,871 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:43,876 INFO ]: Computing forward predicates... [2018-06-24 21:22:44,447 INFO ]: Checked inductivity of 588 backedges. 45 proven. 355 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-06-24 21:22:44,466 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:44,466 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 43] total 45 [2018-06-24 21:22:44,466 INFO ]: Interpolant automaton has 45 states [2018-06-24 21:22:44,466 INFO ]: Constructing interpolant automaton starting with 45 interpolants. [2018-06-24 21:22:44,467 INFO ]: CoverageRelationStatistics Valid=289, Invalid=1691, Unknown=0, NotChecked=0, Total=1980 [2018-06-24 21:22:44,467 INFO ]: Start difference. First operand 114 states and 212 transitions. Second operand 45 states. [2018-06-24 21:22:46,238 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:46,238 INFO ]: Finished difference Result 161 states and 248 transitions. [2018-06-24 21:22:46,238 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-06-24 21:22:46,238 INFO ]: Start accepts. Automaton has 45 states. Word has length 77 [2018-06-24 21:22:46,239 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:46,239 INFO ]: With dead ends: 161 [2018-06-24 21:22:46,239 INFO ]: Without dead ends: 0 [2018-06-24 21:22:46,240 INFO ]: 0 DeclaredPredicates, 182 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4711 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3016, Invalid=11746, Unknown=0, NotChecked=0, Total=14762 [2018-06-24 21:22:46,240 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:22:46,240 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:22:46,240 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:22:46,240 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:22:46,240 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2018-06-24 21:22:46,240 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:46,240 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:22:46,241 INFO ]: Interpolant automaton has 45 states. [2018-06-24 21:22:46,241 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:22:46,241 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:22:46,243 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:22:46,244 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:22:46 BasicIcfg [2018-06-24 21:22:46,244 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:22:46,245 INFO ]: Toolchain (without parser) took 32255.50 ms. Allocated memory was 309.3 MB in the beginning and 760.7 MB in the end (delta: 451.4 MB). Free memory was 266.9 MB in the beginning and 513.1 MB in the end (delta: -246.2 MB). Peak memory consumption was 205.2 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:46,246 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:22:46,246 INFO ]: ChcToBoogie took 50.84 ms. Allocated memory is still 309.3 MB. Free memory was 265.9 MB in the beginning and 263.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:46,247 INFO ]: Boogie Preprocessor took 26.67 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 262.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:46,247 INFO ]: RCFGBuilder took 184.90 ms. Allocated memory is still 309.3 MB. Free memory was 262.8 MB in the beginning and 255.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:46,248 INFO ]: BlockEncodingV2 took 76.77 ms. Allocated memory is still 309.3 MB. Free memory was 255.8 MB in the beginning and 252.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:46,248 INFO ]: TraceAbstraction took 31896.26 ms. Allocated memory was 309.3 MB in the beginning and 760.7 MB in the end (delta: 451.4 MB). Free memory was 252.8 MB in the beginning and 513.1 MB in the end (delta: -260.3 MB). Peak memory consumption was 191.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:46,256 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 13 locations, 16 edges - StatisticsResult: Encoded RCFG 8 locations, 10 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 50.84 ms. Allocated memory is still 309.3 MB. Free memory was 265.9 MB in the beginning and 263.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 26.67 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 262.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 184.90 ms. Allocated memory is still 309.3 MB. Free memory was 262.8 MB in the beginning and 255.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 76.77 ms. Allocated memory is still 309.3 MB. Free memory was 255.8 MB in the beginning and 252.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 31896.26 ms. Allocated memory was 309.3 MB in the beginning and 760.7 MB in the end (delta: 451.4 MB). Free memory was 252.8 MB in the beginning and 513.1 MB in the end (delta: -260.3 MB). Peak memory consumption was 191.1 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, 8 locations, 1 error locations. SAFE Result, 31.8s OverallTime, 15 OverallIterations, 13 TraceHistogramMax, 21.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 383 SDslu, 724 SDs, 0 SdLazy, 8297 SolverSat, 3716 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1708 GetRequests, 702 SyntacticMatches, 15 SemanticMatches, 991 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32955 ImplicationChecksByTransitivity, 20.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=14, 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, 15 MinimizatonAttempts, 688 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 1064 NumberOfCodeBlocks, 1064 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 1036 ConstructedInterpolants, 0 QuantifiedInterpolants, 201204 SizeOfPredicates, 355 NumberOfNonLiveVariables, 2828 ConjunctsInSsa, 685 ConjunctsInUnsatCore, 28 InterpolantComputations, 2 PerfectInterpolantSequences, 2410/5122 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/mc91_95.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-22-46-272.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_95.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-22-46-272.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_95.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-22-46-272.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_95.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-22-46-272.csv Received shutdown request...