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/inc3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:20:22,956 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:20:22,958 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:20:22,969 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:20:22,969 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:20:22,970 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:20:22,971 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:20:22,973 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:20:22,975 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:20:22,976 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:20:22,977 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:20:22,977 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:20:22,978 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:20:22,979 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:20:22,980 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:20:22,980 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:20:22,982 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:20:22,984 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:20:22,986 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:20:22,987 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:20:22,988 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:20:22,990 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-24 21:20:22,995 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:20:22,996 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:20:22,997 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:20:22,997 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:20:22,998 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:20:22,998 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:20:22,999 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:20:23,013 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:20:23,013 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:20:23,013 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:20:23,014 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:20:23,014 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:20:23,015 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:20:23,015 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:20:23,015 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:20:23,015 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:20:23,015 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:20:23,016 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:20:23,016 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:20:23,016 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:20:23,016 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:20:23,016 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:20:23,016 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:20:23,017 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:20:23,017 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:20:23,017 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:20:23,017 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:20:23,017 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:20:23,019 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:20:23,019 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:20:23,059 INFO ]: Repository-Root is: /tmp [2018-06-24 21:20:23,076 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:20:23,080 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:20:23,082 INFO ]: Initializing SmtParser... [2018-06-24 21:20:23,082 INFO ]: SmtParser initialized [2018-06-24 21:20:23,083 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/inc3.smt2 [2018-06-24 21:20:23,084 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 21:20:23,173 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/inc3.smt2 unknown [2018-06-24 21:20:23,453 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/inc3.smt2 [2018-06-24 21:20:23,458 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:20:23,464 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:20:23,465 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:20:23,465 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:20:23,465 INFO ]: ChcToBoogie initialized [2018-06-24 21:20:23,473 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:20:23" (1/1) ... [2018-06-24 21:20:23,536 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:23 Unit [2018-06-24 21:20:23,536 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:20:23,537 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:20:23,537 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:20:23,537 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:20:23,557 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:23" (1/1) ... [2018-06-24 21:20:23,557 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:23" (1/1) ... [2018-06-24 21:20:23,564 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:23" (1/1) ... [2018-06-24 21:20:23,564 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:23" (1/1) ... [2018-06-24 21:20:23,569 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:23" (1/1) ... [2018-06-24 21:20:23,573 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:23" (1/1) ... [2018-06-24 21:20:23,574 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:23" (1/1) ... [2018-06-24 21:20:23,576 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:20:23,576 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:20:23,576 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:20:23,576 INFO ]: RCFGBuilder initialized [2018-06-24 21:20:23,577 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:23" (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 21:20:23,586 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:20:23,586 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:20:23,586 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:20:23,587 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:20:23,587 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:20:23,587 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 21:20:24,017 INFO ]: Using library mode [2018-06-24 21:20:24,017 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:20:24 BoogieIcfgContainer [2018-06-24 21:20:24,017 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:20:24,018 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:20:24,018 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:20:24,019 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:20:24,019 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:20:24" (1/1) ... [2018-06-24 21:20:24,037 INFO ]: Initial Icfg 39 locations, 56 edges [2018-06-24 21:20:24,039 INFO ]: Using Remove infeasible edges [2018-06-24 21:20:24,039 INFO ]: Using Maximize final states [2018-06-24 21:20:24,040 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:20:24,040 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:20:24,042 INFO ]: Using Remove sink states [2018-06-24 21:20:24,043 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:20:24,043 INFO ]: Using Use SBE [2018-06-24 21:20:24,072 INFO ]: SBE split 1 edges [2018-06-24 21:20:24,081 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:20:24,083 INFO ]: 0 new accepting states [2018-06-24 21:20:24,364 INFO ]: Removed 43 edges and 14 locations by large block encoding [2018-06-24 21:20:24,366 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:20:24,367 INFO ]: Removed 1 edges and 0 locations because of local infeasibility [2018-06-24 21:20:24,367 INFO ]: 0 new accepting states [2018-06-24 21:20:24,369 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:20:24,369 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:20:24,369 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:20:24,369 INFO ]: 0 new accepting states [2018-06-24 21:20:24,370 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:20:24,370 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:20:24,370 INFO ]: Encoded RCFG 23 locations, 40 edges [2018-06-24 21:20:24,370 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:20:24 BasicIcfg [2018-06-24 21:20:24,370 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:20:24,376 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:20:24,376 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:20:24,381 INFO ]: TraceAbstraction initialized [2018-06-24 21:20:24,382 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:20:23" (1/4) ... [2018-06-24 21:20:24,383 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a3f0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:20:24, skipping insertion in model container [2018-06-24 21:20:24,383 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:23" (2/4) ... [2018-06-24 21:20:24,383 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a3f0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:20:24, skipping insertion in model container [2018-06-24 21:20:24,383 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:20:24" (3/4) ... [2018-06-24 21:20:24,383 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a3f0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:20:24, skipping insertion in model container [2018-06-24 21:20:24,383 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:20:24" (4/4) ... [2018-06-24 21:20:24,387 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:20:24,395 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:20:24,403 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:20:24,455 INFO ]: Using default assertion order modulation [2018-06-24 21:20:24,456 INFO ]: Interprodecural is true [2018-06-24 21:20:24,456 INFO ]: Hoare is false [2018-06-24 21:20:24,456 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:20:24,456 INFO ]: Backedges is TWOTRACK [2018-06-24 21:20:24,456 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:20:24,456 INFO ]: Difference is false [2018-06-24 21:20:24,456 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:20:24,456 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:20:24,469 INFO ]: Start isEmpty. Operand 23 states. [2018-06-24 21:20:24,486 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:20:24,486 INFO ]: Found error trace [2018-06-24 21:20:24,487 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:20:24,487 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:20:24,492 INFO ]: Analyzing trace with hash 39497605, now seen corresponding path program 1 times [2018-06-24 21:20:24,494 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:20:24,494 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:20:24,541 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:24,541 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:24,541 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:24,573 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:24,642 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:20:24,644 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:20:24,645 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:20:24,646 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:20:24,663 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:20:24,664 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:20:24,666 INFO ]: Start difference. First operand 23 states. Second operand 3 states. [2018-06-24 21:20:24,875 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:20:24,876 INFO ]: Finished difference Result 37 states and 67 transitions. [2018-06-24 21:20:24,876 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:20:24,877 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:20:24,877 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:20:24,888 INFO ]: With dead ends: 37 [2018-06-24 21:20:24,888 INFO ]: Without dead ends: 37 [2018-06-24 21:20:24,890 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 21:20:24,903 INFO ]: Start minimizeSevpa. Operand 37 states. [2018-06-24 21:20:24,935 INFO ]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-06-24 21:20:24,936 INFO ]: Start removeUnreachable. Operand 37 states. [2018-06-24 21:20:24,938 INFO ]: Finished removeUnreachable. Reduced from 37 states to 37 states and 67 transitions. [2018-06-24 21:20:24,940 INFO ]: Start accepts. Automaton has 37 states and 67 transitions. Word has length 5 [2018-06-24 21:20:24,940 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:20:24,940 INFO ]: Abstraction has 37 states and 67 transitions. [2018-06-24 21:20:24,941 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:20:24,941 INFO ]: Start isEmpty. Operand 37 states and 67 transitions. [2018-06-24 21:20:24,943 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:20:24,943 INFO ]: Found error trace [2018-06-24 21:20:24,943 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:20:24,943 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:20:24,944 INFO ]: Analyzing trace with hash 1220621382, now seen corresponding path program 1 times [2018-06-24 21:20:24,944 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:20:24,944 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:20:24,945 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:24,945 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:24,945 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:24,957 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:25,165 WARN ]: Spent 158.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-06-24 21:20:25,237 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:20:25,237 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:20:25,237 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-24 21:20:25,239 INFO ]: Interpolant automaton has 4 states [2018-06-24 21:20:25,239 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 21:20:25,239 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:20:25,239 INFO ]: Start difference. First operand 37 states and 67 transitions. Second operand 4 states. [2018-06-24 21:20:25,348 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:20:25,348 INFO ]: Finished difference Result 66 states and 141 transitions. [2018-06-24 21:20:25,348 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 21:20:25,349 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-24 21:20:25,349 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:20:25,356 INFO ]: With dead ends: 66 [2018-06-24 21:20:25,356 INFO ]: Without dead ends: 66 [2018-06-24 21:20:25,356 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:20:25,357 INFO ]: Start minimizeSevpa. Operand 66 states. [2018-06-24 21:20:25,376 INFO ]: Finished minimizeSevpa. Reduced states from 66 to 40. [2018-06-24 21:20:25,376 INFO ]: Start removeUnreachable. Operand 40 states. [2018-06-24 21:20:25,378 INFO ]: Finished removeUnreachable. Reduced from 40 states to 40 states and 71 transitions. [2018-06-24 21:20:25,378 INFO ]: Start accepts. Automaton has 40 states and 71 transitions. Word has length 6 [2018-06-24 21:20:25,378 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:20:25,378 INFO ]: Abstraction has 40 states and 71 transitions. [2018-06-24 21:20:25,378 INFO ]: Interpolant automaton has 4 states. [2018-06-24 21:20:25,378 INFO ]: Start isEmpty. Operand 40 states and 71 transitions. [2018-06-24 21:20:25,386 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-24 21:20:25,386 INFO ]: Found error trace [2018-06-24 21:20:25,386 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:20:25,386 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:20:25,386 INFO ]: Analyzing trace with hash 870454743, now seen corresponding path program 1 times [2018-06-24 21:20:25,386 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:20:25,386 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:20:25,391 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:25,391 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:25,391 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:25,435 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:25,482 INFO ]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:20:25,482 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:20:25,482 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 21:20:25,489 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:25,525 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:25,530 INFO ]: Computing forward predicates... [2018-06-24 21:20:25,551 INFO ]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:20:25,572 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:20:25,573 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2018-06-24 21:20:25,573 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:20:25,573 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:20:25,573 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:20:25,573 INFO ]: Start difference. First operand 40 states and 71 transitions. Second operand 3 states. [2018-06-24 21:20:25,913 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:20:25,913 INFO ]: Finished difference Result 55 states and 91 transitions. [2018-06-24 21:20:25,913 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:20:25,913 INFO ]: Start accepts. Automaton has 3 states. Word has length 15 [2018-06-24 21:20:25,913 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:20:25,916 INFO ]: With dead ends: 55 [2018-06-24 21:20:25,916 INFO ]: Without dead ends: 55 [2018-06-24 21:20:25,916 INFO ]: 0 DeclaredPredicates, 17 GetRequests, 16 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 21:20:25,916 INFO ]: Start minimizeSevpa. Operand 55 states. [2018-06-24 21:20:25,924 INFO ]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-06-24 21:20:25,924 INFO ]: Start removeUnreachable. Operand 55 states. [2018-06-24 21:20:25,926 INFO ]: Finished removeUnreachable. Reduced from 55 states to 55 states and 91 transitions. [2018-06-24 21:20:25,926 INFO ]: Start accepts. Automaton has 55 states and 91 transitions. Word has length 15 [2018-06-24 21:20:25,926 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:20:25,926 INFO ]: Abstraction has 55 states and 91 transitions. [2018-06-24 21:20:25,926 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:20:25,926 INFO ]: Start isEmpty. Operand 55 states and 91 transitions. [2018-06-24 21:20:25,930 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-24 21:20:25,930 INFO ]: Found error trace [2018-06-24 21:20:25,930 INFO ]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:20:25,930 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:20:25,931 INFO ]: Analyzing trace with hash 903665195, now seen corresponding path program 1 times [2018-06-24 21:20:25,931 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:20:25,931 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:20:25,931 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:25,931 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:25,931 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:25,947 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:26,025 INFO ]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-24 21:20:26,025 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:20:26,025 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-24 21:20:26,036 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:20:26,077 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:26,079 INFO ]: Computing forward predicates... [2018-06-24 21:20:26,083 INFO ]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:20:26,113 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:20:26,113 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2018-06-24 21:20:26,114 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:20:26,114 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:20:26,114 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:20:26,114 INFO ]: Start difference. First operand 55 states and 91 transitions. Second operand 3 states. [2018-06-24 21:20:26,496 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:20:26,496 INFO ]: Finished difference Result 70 states and 118 transitions. [2018-06-24 21:20:26,496 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:20:26,496 INFO ]: Start accepts. Automaton has 3 states. Word has length 17 [2018-06-24 21:20:26,496 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:20:26,498 INFO ]: With dead ends: 70 [2018-06-24 21:20:26,498 INFO ]: Without dead ends: 70 [2018-06-24 21:20:26,499 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 18 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 21:20:26,499 INFO ]: Start minimizeSevpa. Operand 70 states. [2018-06-24 21:20:26,511 INFO ]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-06-24 21:20:26,511 INFO ]: Start removeUnreachable. Operand 70 states. [2018-06-24 21:20:26,512 INFO ]: Finished removeUnreachable. Reduced from 70 states to 70 states and 118 transitions. [2018-06-24 21:20:26,512 INFO ]: Start accepts. Automaton has 70 states and 118 transitions. Word has length 17 [2018-06-24 21:20:26,512 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:20:26,512 INFO ]: Abstraction has 70 states and 118 transitions. [2018-06-24 21:20:26,512 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:20:26,513 INFO ]: Start isEmpty. Operand 70 states and 118 transitions. [2018-06-24 21:20:26,517 INFO ]: Finished isEmpty. Found accepting run of length 23 [2018-06-24 21:20:26,517 INFO ]: Found error trace [2018-06-24 21:20:26,517 INFO ]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:20:26,517 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:20:26,518 INFO ]: Analyzing trace with hash -1096844999, now seen corresponding path program 1 times [2018-06-24 21:20:26,518 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:20:26,518 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:20:26,518 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:26,518 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:26,518 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:26,537 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:26,619 INFO ]: Checked inductivity of 21 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-24 21:20:26,619 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:20:26,619 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) [2018-06-24 21:20:26,633 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:20:26,672 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:26,675 INFO ]: Computing forward predicates... [2018-06-24 21:20:26,741 INFO ]: Checked inductivity of 21 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-24 21:20:26,764 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:20:26,764 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6] total 7 [2018-06-24 21:20:26,764 INFO ]: Interpolant automaton has 7 states [2018-06-24 21:20:26,765 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 21:20:26,765 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:20:26,765 INFO ]: Start difference. First operand 70 states and 118 transitions. Second operand 7 states. [2018-06-24 21:20:27,796 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:20:27,796 INFO ]: Finished difference Result 186 states and 381 transitions. [2018-06-24 21:20:27,796 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-24 21:20:27,796 INFO ]: Start accepts. Automaton has 7 states. Word has length 22 [2018-06-24 21:20:27,796 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:20:27,805 INFO ]: With dead ends: 186 [2018-06-24 21:20:27,805 INFO ]: Without dead ends: 177 [2018-06-24 21:20:27,806 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-06-24 21:20:27,806 INFO ]: Start minimizeSevpa. Operand 177 states. [2018-06-24 21:20:27,835 INFO ]: Finished minimizeSevpa. Reduced states from 177 to 86. [2018-06-24 21:20:27,835 INFO ]: Start removeUnreachable. Operand 86 states. [2018-06-24 21:20:27,837 INFO ]: Finished removeUnreachable. Reduced from 86 states to 86 states and 140 transitions. [2018-06-24 21:20:27,837 INFO ]: Start accepts. Automaton has 86 states and 140 transitions. Word has length 22 [2018-06-24 21:20:27,837 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:20:27,837 INFO ]: Abstraction has 86 states and 140 transitions. [2018-06-24 21:20:27,837 INFO ]: Interpolant automaton has 7 states. [2018-06-24 21:20:27,837 INFO ]: Start isEmpty. Operand 86 states and 140 transitions. [2018-06-24 21:20:27,842 INFO ]: Finished isEmpty. Found accepting run of length 35 [2018-06-24 21:20:27,842 INFO ]: Found error trace [2018-06-24 21:20:27,842 INFO ]: trace histogram [6, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:20:27,842 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:20:27,842 INFO ]: Analyzing trace with hash -380156903, now seen corresponding path program 1 times [2018-06-24 21:20:27,842 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:20:27,842 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:20:27,843 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:27,843 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:27,843 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:27,864 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:27,989 INFO ]: Checked inductivity of 57 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-06-24 21:20:27,989 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:20:28,011 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 21:20:28,018 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:28,068 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:28,071 INFO ]: Computing forward predicates... [2018-06-24 21:20:28,518 INFO ]: Checked inductivity of 57 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-06-24 21:20:28,545 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:20:28,545 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2018-06-24 21:20:28,545 INFO ]: Interpolant automaton has 14 states [2018-06-24 21:20:28,545 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-24 21:20:28,545 INFO ]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2018-06-24 21:20:28,545 INFO ]: Start difference. First operand 86 states and 140 transitions. Second operand 14 states. [2018-06-24 21:20:34,207 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:20:34,207 INFO ]: Finished difference Result 675 states and 2281 transitions. [2018-06-24 21:20:34,209 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-06-24 21:20:34,209 INFO ]: Start accepts. Automaton has 14 states. Word has length 34 [2018-06-24 21:20:34,210 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:20:34,260 INFO ]: With dead ends: 675 [2018-06-24 21:20:34,260 INFO ]: Without dead ends: 657 [2018-06-24 21:20:34,263 INFO ]: 0 DeclaredPredicates, 129 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=630, Invalid=3152, Unknown=0, NotChecked=0, Total=3782 [2018-06-24 21:20:34,263 INFO ]: Start minimizeSevpa. Operand 657 states. [2018-06-24 21:20:34,426 INFO ]: Finished minimizeSevpa. Reduced states from 657 to 295. [2018-06-24 21:20:34,426 INFO ]: Start removeUnreachable. Operand 295 states. [2018-06-24 21:20:34,437 INFO ]: Finished removeUnreachable. Reduced from 295 states to 295 states and 662 transitions. [2018-06-24 21:20:34,437 INFO ]: Start accepts. Automaton has 295 states and 662 transitions. Word has length 34 [2018-06-24 21:20:34,437 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:20:34,437 INFO ]: Abstraction has 295 states and 662 transitions. [2018-06-24 21:20:34,437 INFO ]: Interpolant automaton has 14 states. [2018-06-24 21:20:34,437 INFO ]: Start isEmpty. Operand 295 states and 662 transitions. [2018-06-24 21:20:34,456 INFO ]: Finished isEmpty. Found accepting run of length 48 [2018-06-24 21:20:34,456 INFO ]: Found error trace [2018-06-24 21:20:34,456 INFO ]: trace histogram [8, 7, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:20:34,456 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:20:34,456 INFO ]: Analyzing trace with hash -940515682, now seen corresponding path program 1 times [2018-06-24 21:20:34,456 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:20:34,456 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:20:34,457 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:34,457 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:34,457 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:34,522 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:34,622 INFO ]: Checked inductivity of 119 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-06-24 21:20:34,622 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:20:34,622 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 21:20:34,637 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:34,704 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:34,708 INFO ]: Computing forward predicates... [2018-06-24 21:20:34,777 INFO ]: Checked inductivity of 119 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-06-24 21:20:34,808 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:20:34,808 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7] total 8 [2018-06-24 21:20:34,808 INFO ]: Interpolant automaton has 8 states [2018-06-24 21:20:34,809 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 21:20:34,809 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:20:34,809 INFO ]: Start difference. First operand 295 states and 662 transitions. Second operand 8 states. [2018-06-24 21:20:35,756 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:20:35,756 INFO ]: Finished difference Result 572 states and 1787 transitions. [2018-06-24 21:20:35,756 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-24 21:20:35,756 INFO ]: Start accepts. Automaton has 8 states. Word has length 47 [2018-06-24 21:20:35,756 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:20:35,789 INFO ]: With dead ends: 572 [2018-06-24 21:20:35,789 INFO ]: Without dead ends: 572 [2018-06-24 21:20:35,789 INFO ]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2018-06-24 21:20:35,789 INFO ]: Start minimizeSevpa. Operand 572 states. [2018-06-24 21:20:35,878 INFO ]: Finished minimizeSevpa. Reduced states from 572 to 357. [2018-06-24 21:20:35,878 INFO ]: Start removeUnreachable. Operand 357 states. [2018-06-24 21:20:35,886 INFO ]: Finished removeUnreachable. Reduced from 357 states to 357 states and 885 transitions. [2018-06-24 21:20:35,886 INFO ]: Start accepts. Automaton has 357 states and 885 transitions. Word has length 47 [2018-06-24 21:20:35,886 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:20:35,886 INFO ]: Abstraction has 357 states and 885 transitions. [2018-06-24 21:20:35,886 INFO ]: Interpolant automaton has 8 states. [2018-06-24 21:20:35,886 INFO ]: Start isEmpty. Operand 357 states and 885 transitions. [2018-06-24 21:20:35,904 INFO ]: Finished isEmpty. Found accepting run of length 80 [2018-06-24 21:20:35,904 INFO ]: Found error trace [2018-06-24 21:20:35,904 INFO ]: trace histogram [14, 11, 5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:20:35,904 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:20:35,904 INFO ]: Analyzing trace with hash 1809551395, now seen corresponding path program 1 times [2018-06-24 21:20:35,904 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:20:35,904 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:20:35,905 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:35,905 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:35,905 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:35,993 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:36,112 INFO ]: Checked inductivity of 364 backedges. 28 proven. 23 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2018-06-24 21:20:36,112 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:20:36,112 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) [2018-06-24 21:20:36,122 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:20:36,210 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:36,216 INFO ]: Computing forward predicates... [2018-06-24 21:20:36,227 INFO ]: Checked inductivity of 364 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2018-06-24 21:20:36,247 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:20:36,247 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2018-06-24 21:20:36,247 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:20:36,247 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:20:36,247 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:20:36,247 INFO ]: Start difference. First operand 357 states and 885 transitions. Second operand 3 states. [2018-06-24 21:20:36,284 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:20:36,284 INFO ]: Finished difference Result 477 states and 1412 transitions. [2018-06-24 21:20:36,285 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:20:36,285 INFO ]: Start accepts. Automaton has 3 states. Word has length 79 [2018-06-24 21:20:36,285 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:20:36,301 INFO ]: With dead ends: 477 [2018-06-24 21:20:36,301 INFO ]: Without dead ends: 477 [2018-06-24 21:20:36,301 INFO ]: 0 DeclaredPredicates, 81 GetRequests, 80 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 21:20:36,302 INFO ]: Start minimizeSevpa. Operand 477 states. [2018-06-24 21:20:36,371 INFO ]: Finished minimizeSevpa. Reduced states from 477 to 345. [2018-06-24 21:20:36,371 INFO ]: Start removeUnreachable. Operand 345 states. [2018-06-24 21:20:36,379 INFO ]: Finished removeUnreachable. Reduced from 345 states to 345 states and 861 transitions. [2018-06-24 21:20:36,379 INFO ]: Start accepts. Automaton has 345 states and 861 transitions. Word has length 79 [2018-06-24 21:20:36,379 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:20:36,379 INFO ]: Abstraction has 345 states and 861 transitions. [2018-06-24 21:20:36,379 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:20:36,379 INFO ]: Start isEmpty. Operand 345 states and 861 transitions. [2018-06-24 21:20:36,397 INFO ]: Finished isEmpty. Found accepting run of length 400 [2018-06-24 21:20:36,397 INFO ]: Found error trace [2018-06-24 21:20:36,398 INFO ]: trace histogram [71, 54, 27, 27, 27, 27, 27, 11, 11, 11, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:20:36,398 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:20:36,398 INFO ]: Analyzing trace with hash 138528720, now seen corresponding path program 1 times [2018-06-24 21:20:36,398 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:20:36,398 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:20:36,399 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:36,399 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:36,399 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:36,822 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:38,082 INFO ]: Checked inductivity of 10207 backedges. 666 proven. 603 refuted. 0 times theorem prover too weak. 8938 trivial. 0 not checked. [2018-06-24 21:20:38,083 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:20:38,083 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 [2018-06-24 21:20:38,089 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:38,595 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:38,642 INFO ]: Computing forward predicates... [2018-06-24 21:20:38,900 INFO ]: Checked inductivity of 10207 backedges. 3683 proven. 50 refuted. 0 times theorem prover too weak. 6474 trivial. 0 not checked. [2018-06-24 21:20:38,921 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:20:38,921 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4] total 14 [2018-06-24 21:20:38,922 INFO ]: Interpolant automaton has 14 states [2018-06-24 21:20:38,922 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-24 21:20:38,922 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-24 21:20:38,922 INFO ]: Start difference. First operand 345 states and 861 transitions. Second operand 14 states. [2018-06-24 21:20:40,271 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:20:40,272 INFO ]: Finished difference Result 388 states and 853 transitions. [2018-06-24 21:20:40,289 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-06-24 21:20:40,289 INFO ]: Start accepts. Automaton has 14 states. Word has length 399 [2018-06-24 21:20:40,294 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:20:40,294 INFO ]: With dead ends: 388 [2018-06-24 21:20:40,294 INFO ]: Without dead ends: 0 [2018-06-24 21:20:40,295 INFO ]: 0 DeclaredPredicates, 450 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=353, Invalid=1999, Unknown=0, NotChecked=0, Total=2352 [2018-06-24 21:20:40,295 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:20:40,295 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:20:40,295 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:20:40,295 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:20:40,295 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 399 [2018-06-24 21:20:40,295 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:20:40,295 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:20:40,295 INFO ]: Interpolant automaton has 14 states. [2018-06-24 21:20:40,295 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:20:40,295 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:20:40,297 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:20:40,298 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:20:40 BasicIcfg [2018-06-24 21:20:40,298 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:20:40,299 INFO ]: Toolchain (without parser) took 16840.34 ms. Allocated memory was 309.3 MB in the beginning and 636.0 MB in the end (delta: 326.6 MB). Free memory was 261.7 MB in the beginning and 361.2 MB in the end (delta: -99.5 MB). Peak memory consumption was 227.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:20:40,299 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:20:40,299 INFO ]: ChcToBoogie took 71.68 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:20:40,300 INFO ]: Boogie Preprocessor took 38.65 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 257.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:20:40,300 INFO ]: RCFGBuilder took 441.17 ms. Allocated memory is still 309.3 MB. Free memory was 257.7 MB in the beginning and 243.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:20:40,300 INFO ]: BlockEncodingV2 took 352.61 ms. Allocated memory is still 309.3 MB. Free memory was 243.7 MB in the beginning and 230.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:20:40,301 INFO ]: TraceAbstraction took 15922.32 ms. Allocated memory was 309.3 MB in the beginning and 636.0 MB in the end (delta: 326.6 MB). Free memory was 230.7 MB in the beginning and 361.2 MB in the end (delta: -130.5 MB). Peak memory consumption was 196.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:20:40,305 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 39 locations, 56 edges - StatisticsResult: Encoded RCFG 23 locations, 40 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 71.68 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.65 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 257.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 441.17 ms. Allocated memory is still 309.3 MB. Free memory was 257.7 MB in the beginning and 243.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 352.61 ms. Allocated memory is still 309.3 MB. Free memory was 243.7 MB in the beginning and 230.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 15922.32 ms. Allocated memory was 309.3 MB in the beginning and 636.0 MB in the end (delta: 326.6 MB). Free memory was 230.7 MB in the beginning and 361.2 MB in the end (delta: -130.5 MB). Peak memory consumption was 196.1 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, 23 locations, 1 error locations. SAFE Result, 15.8s OverallTime, 9 OverallIterations, 71 TraceHistogramMax, 10.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 973 SDtfs, 654 SDslu, 2479 SDs, 0 SdLazy, 6437 SolverSat, 2523 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 806 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=357occurred in iteration=7, 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: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 826 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1237 NumberOfCodeBlocks, 1237 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1221 ConstructedInterpolants, 0 QuantifiedInterpolants, 368525 SizeOfPredicates, 32 NumberOfNonLiveVariables, 5415 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 16 InterpolantComputations, 5 PerfectInterpolantSequences, 20843/21578 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/inc3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-20-40-315.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inc3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-20-40-315.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inc3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-20-40-315.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inc3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-20-40-315.csv Received shutdown request...