java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/llreve-bench/smt2/arrays/libc__memset_1.array.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:44:07,433 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:44:07,436 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:44:07,450 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:44:07,450 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:44:07,451 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:44:07,453 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:44:07,455 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:44:07,456 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:44:07,457 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:44:07,458 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:44:07,459 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:44:07,459 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:44:07,460 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:44:07,463 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:44:07,464 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:44:07,465 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:44:07,475 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:44:07,477 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:44:07,478 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:44:07,478 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:44:07,480 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:44:07,481 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:44:07,484 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:44:07,485 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:44:07,486 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:44:07,486 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:44:07,488 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:44:07,489 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:44:07,489 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:44:07,489 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:44:07,490 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:44:07,490 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:44:07,494 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:44:07,494 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:44:07,495 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 11:44:07,509 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:44:07,509 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:44:07,509 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:44:07,509 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:44:07,510 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:44:07,510 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:44:07,511 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:44:07,511 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:44:07,511 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:44:07,511 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:44:07,511 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:44:07,512 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:44:07,512 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:44:07,512 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:44:07,512 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:44:07,512 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:44:07,512 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:44:07,513 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:44:07,513 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:44:07,514 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:44:07,514 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:44:07,564 INFO ]: Repository-Root is: /tmp [2018-06-22 11:44:07,575 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:44:07,579 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:44:07,580 INFO ]: Initializing SmtParser... [2018-06-22 11:44:07,580 INFO ]: SmtParser initialized [2018-06-22 11:44:07,581 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/arrays/libc__memset_1.array.smt2 [2018-06-22 11:44:07,582 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 [2018-06-22 11:44:07,676 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/arrays/libc__memset_1.array.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@3e5a9e9d [2018-06-22 11:44:07,907 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/arrays/libc__memset_1.array.smt2 [2018-06-22 11:44:07,914 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:44:07,921 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:44:07,922 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:44:07,922 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:44:07,922 INFO ]: ChcToBoogie initialized [2018-06-22 11:44:07,925 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:44:07" (1/1) ... [2018-06-22 11:44:07,974 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:44:07 Unit [2018-06-22 11:44:07,974 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:44:07,975 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:44:07,975 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:44:07,975 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:44:07,998 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:44:07" (1/1) ... [2018-06-22 11:44:07,998 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:44:07" (1/1) ... [2018-06-22 11:44:08,007 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:44:07" (1/1) ... [2018-06-22 11:44:08,007 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:44:07" (1/1) ... [2018-06-22 11:44:08,011 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:44:07" (1/1) ... [2018-06-22 11:44:08,012 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:44:07" (1/1) ... [2018-06-22 11:44:08,013 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:44:07" (1/1) ... [2018-06-22 11:44:08,017 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:44:08,017 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:44:08,017 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:44:08,017 INFO ]: RCFGBuilder initialized [2018-06-22 11:44:08,018 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:44:07" (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) [2018-06-22 11:44:08,028 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:44:08,028 INFO ]: Found specification of procedure False [2018-06-22 11:44:08,028 INFO ]: Found implementation of procedure False [2018-06-22 11:44:08,028 INFO ]: Specification and implementation of procedure INV_MAIN_0 given in one single declaration [2018-06-22 11:44:08,028 INFO ]: Found specification of procedure INV_MAIN_0 [2018-06-22 11:44:08,028 INFO ]: Found implementation of procedure INV_MAIN_0 [2018-06-22 11:44:08,028 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:44:08,028 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:44:08,028 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 [2018-06-22 11:44:08,297 INFO ]: Using library mode [2018-06-22 11:44:08,298 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:44:08 BoogieIcfgContainer [2018-06-22 11:44:08,298 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:44:08,305 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:44:08,305 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:44:08,307 INFO ]: TraceAbstraction initialized [2018-06-22 11:44:08,307 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:44:07" (1/3) ... [2018-06-22 11:44:08,308 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce92429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:44:08, skipping insertion in model container [2018-06-22 11:44:08,308 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:44:07" (2/3) ... [2018-06-22 11:44:08,308 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce92429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:44:08, skipping insertion in model container [2018-06-22 11:44:08,308 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:44:08" (3/3) ... [2018-06-22 11:44:08,310 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:44:08,323 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:44:08,331 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:44:08,368 INFO ]: Using default assertion order modulation [2018-06-22 11:44:08,368 INFO ]: Interprodecural is true [2018-06-22 11:44:08,368 INFO ]: Hoare is false [2018-06-22 11:44:08,368 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:44:08,368 INFO ]: Backedges is TWOTRACK [2018-06-22 11:44:08,368 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:44:08,368 INFO ]: Difference is false [2018-06-22 11:44:08,368 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:44:08,368 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:44:08,382 INFO ]: Start isEmpty. Operand 15 states. [2018-06-22 11:44:08,392 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:44:08,392 INFO ]: Found error trace [2018-06-22 11:44:08,394 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:44:08,394 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:44:08,400 INFO ]: Analyzing trace with hash 70254358, now seen corresponding path program 1 times [2018-06-22 11:44:08,402 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:44:08,402 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:44:08,436 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:08,436 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:44:08,436 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:08,452 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:44:08,470 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:44:08,472 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:44:08,472 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:44:08,473 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:44:08,483 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:44:08,484 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:44:08,485 INFO ]: Start difference. First operand 15 states. Second operand 2 states. [2018-06-22 11:44:08,506 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:44:08,506 INFO ]: Finished difference Result 13 states and 18 transitions. [2018-06-22 11:44:08,506 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:44:08,507 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:44:08,507 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:44:08,517 INFO ]: With dead ends: 13 [2018-06-22 11:44:08,517 INFO ]: Without dead ends: 13 [2018-06-22 11:44:08,519 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:44:08,532 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 11:44:08,550 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 11:44:08,552 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 11:44:08,552 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2018-06-22 11:44:08,553 INFO ]: Start accepts. Automaton has 13 states and 18 transitions. Word has length 5 [2018-06-22 11:44:08,554 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:44:08,554 INFO ]: Abstraction has 13 states and 18 transitions. [2018-06-22 11:44:08,554 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:44:08,554 INFO ]: Start isEmpty. Operand 13 states and 18 transitions. [2018-06-22 11:44:08,555 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:44:08,555 INFO ]: Found error trace [2018-06-22 11:44:08,555 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:44:08,555 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:44:08,555 INFO ]: Analyzing trace with hash -757938824, now seen corresponding path program 1 times [2018-06-22 11:44:08,555 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:44:08,555 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:44:08,556 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:08,556 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:44:08,556 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:08,580 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:44:08,698 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:44:08,699 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:44:08,699 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:44:08,700 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:44:08,700 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:44:08,700 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:44:08,701 INFO ]: Start difference. First operand 13 states and 18 transitions. Second operand 4 states. [2018-06-22 11:44:08,802 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:44:08,802 INFO ]: Finished difference Result 15 states and 22 transitions. [2018-06-22 11:44:08,802 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:44:08,802 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:44:08,803 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:44:08,803 INFO ]: With dead ends: 15 [2018-06-22 11:44:08,803 INFO ]: Without dead ends: 15 [2018-06-22 11:44:08,804 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:44:08,804 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 11:44:08,811 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 11:44:08,811 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 11:44:08,812 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2018-06-22 11:44:08,812 INFO ]: Start accepts. Automaton has 15 states and 22 transitions. Word has length 9 [2018-06-22 11:44:08,813 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:44:08,813 INFO ]: Abstraction has 15 states and 22 transitions. [2018-06-22 11:44:08,813 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:44:08,813 INFO ]: Start isEmpty. Operand 15 states and 22 transitions. [2018-06-22 11:44:08,814 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:44:08,814 INFO ]: Found error trace [2018-06-22 11:44:08,814 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:44:08,814 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:44:08,815 INFO ]: Analyzing trace with hash 926474470, now seen corresponding path program 1 times [2018-06-22 11:44:08,815 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:44:08,815 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:44:08,816 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:08,816 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:44:08,816 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:08,833 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:44:08,969 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:44:08,969 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:44:08,969 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 [2018-06-22 11:44:08,977 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:44:09,016 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:44:09,026 INFO ]: Computing forward predicates... [2018-06-22 11:44:09,274 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:44:09,311 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:44:09,311 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 11:44:09,311 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:44:09,311 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:44:09,311 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:44:09,312 INFO ]: Start difference. First operand 15 states and 22 transitions. Second operand 7 states. [2018-06-22 11:44:09,946 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:44:09,946 INFO ]: Finished difference Result 25 states and 44 transitions. [2018-06-22 11:44:09,946 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:44:09,947 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-22 11:44:09,947 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:44:09,948 INFO ]: With dead ends: 25 [2018-06-22 11:44:09,948 INFO ]: Without dead ends: 25 [2018-06-22 11:44:09,948 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:44:09,948 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 11:44:09,955 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 17. [2018-06-22 11:44:09,955 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 11:44:09,955 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 26 transitions. [2018-06-22 11:44:09,955 INFO ]: Start accepts. Automaton has 17 states and 26 transitions. Word has length 13 [2018-06-22 11:44:09,956 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:44:09,956 INFO ]: Abstraction has 17 states and 26 transitions. [2018-06-22 11:44:09,956 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:44:09,956 INFO ]: Start isEmpty. Operand 17 states and 26 transitions. [2018-06-22 11:44:09,956 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:44:09,956 INFO ]: Found error trace [2018-06-22 11:44:09,956 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:44:09,956 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:44:09,956 INFO ]: Analyzing trace with hash 681223617, now seen corresponding path program 1 times [2018-06-22 11:44:09,956 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:44:09,956 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:44:09,957 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:09,958 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:44:09,958 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:09,968 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:44:10,068 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:44:10,068 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:44:10,068 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 [2018-06-22 11:44:10,078 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:44:10,097 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:44:10,099 INFO ]: Computing forward predicates... [2018-06-22 11:44:10,146 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:44:10,168 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:44:10,168 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 11:44:10,168 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:44:10,168 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:44:10,168 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:44:10,169 INFO ]: Start difference. First operand 17 states and 26 transitions. Second operand 7 states. [2018-06-22 11:44:10,440 WARN ]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 11:44:10,694 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:44:10,694 INFO ]: Finished difference Result 29 states and 52 transitions. [2018-06-22 11:44:10,694 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:44:10,694 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-22 11:44:10,694 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:44:10,696 INFO ]: With dead ends: 29 [2018-06-22 11:44:10,696 INFO ]: Without dead ends: 29 [2018-06-22 11:44:10,696 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:44:10,696 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-22 11:44:10,703 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 15. [2018-06-22 11:44:10,703 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 11:44:10,704 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2018-06-22 11:44:10,704 INFO ]: Start accepts. Automaton has 15 states and 22 transitions. Word has length 13 [2018-06-22 11:44:10,704 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:44:10,704 INFO ]: Abstraction has 15 states and 22 transitions. [2018-06-22 11:44:10,704 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:44:10,704 INFO ]: Start isEmpty. Operand 15 states and 22 transitions. [2018-06-22 11:44:10,705 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:44:10,705 INFO ]: Found error trace [2018-06-22 11:44:10,705 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:44:10,705 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:44:10,705 INFO ]: Analyzing trace with hash 42945754, now seen corresponding path program 1 times [2018-06-22 11:44:10,705 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:44:10,705 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:44:10,706 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:10,706 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:44:10,706 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:10,718 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:44:10,892 INFO ]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:44:10,892 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:44:10,892 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 11:44:10,892 INFO ]: Interpolant automaton has 5 states [2018-06-22 11:44:10,892 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 11:44:10,892 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:44:10,892 INFO ]: Start difference. First operand 15 states and 22 transitions. Second operand 5 states. [2018-06-22 11:44:10,999 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:44:10,999 INFO ]: Finished difference Result 21 states and 35 transitions. [2018-06-22 11:44:11,000 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:44:11,000 INFO ]: Start accepts. Automaton has 5 states. Word has length 13 [2018-06-22 11:44:11,000 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:44:11,001 INFO ]: With dead ends: 21 [2018-06-22 11:44:11,001 INFO ]: Without dead ends: 21 [2018-06-22 11:44:11,001 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:44:11,001 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 11:44:11,005 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-06-22 11:44:11,006 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:44:11,006 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2018-06-22 11:44:11,006 INFO ]: Start accepts. Automaton has 19 states and 30 transitions. Word has length 13 [2018-06-22 11:44:11,006 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:44:11,006 INFO ]: Abstraction has 19 states and 30 transitions. [2018-06-22 11:44:11,007 INFO ]: Interpolant automaton has 5 states. [2018-06-22 11:44:11,007 INFO ]: Start isEmpty. Operand 19 states and 30 transitions. [2018-06-22 11:44:11,007 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:44:11,007 INFO ]: Found error trace [2018-06-22 11:44:11,008 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:44:11,008 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:44:11,008 INFO ]: Analyzing trace with hash 1317066440, now seen corresponding path program 1 times [2018-06-22 11:44:11,008 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:44:11,008 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:44:11,009 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:11,009 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:44:11,009 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:11,021 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:44:11,078 INFO ]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:44:11,078 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:44:11,078 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 11:44:11,079 INFO ]: Interpolant automaton has 6 states [2018-06-22 11:44:11,079 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 11:44:11,079 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:44:11,079 INFO ]: Start difference. First operand 19 states and 30 transitions. Second operand 6 states. [2018-06-22 11:44:11,362 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:44:11,362 INFO ]: Finished difference Result 38 states and 77 transitions. [2018-06-22 11:44:11,363 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:44:11,363 INFO ]: Start accepts. Automaton has 6 states. Word has length 17 [2018-06-22 11:44:11,363 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:44:11,364 INFO ]: With dead ends: 38 [2018-06-22 11:44:11,364 INFO ]: Without dead ends: 38 [2018-06-22 11:44:11,365 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:44:11,365 INFO ]: Start minimizeSevpa. Operand 38 states. [2018-06-22 11:44:11,374 INFO ]: Finished minimizeSevpa. Reduced states from 38 to 32. [2018-06-22 11:44:11,374 INFO ]: Start removeUnreachable. Operand 32 states. [2018-06-22 11:44:11,375 INFO ]: Finished removeUnreachable. Reduced from 32 states to 32 states and 63 transitions. [2018-06-22 11:44:11,375 INFO ]: Start accepts. Automaton has 32 states and 63 transitions. Word has length 17 [2018-06-22 11:44:11,375 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:44:11,375 INFO ]: Abstraction has 32 states and 63 transitions. [2018-06-22 11:44:11,375 INFO ]: Interpolant automaton has 6 states. [2018-06-22 11:44:11,376 INFO ]: Start isEmpty. Operand 32 states and 63 transitions. [2018-06-22 11:44:11,377 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:44:11,377 INFO ]: Found error trace [2018-06-22 11:44:11,377 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:44:11,377 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:44:11,378 INFO ]: Analyzing trace with hash 1854197987, now seen corresponding path program 1 times [2018-06-22 11:44:11,378 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:44:11,378 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:44:11,378 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:11,378 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:44:11,378 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:11,388 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:44:11,421 INFO ]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:44:11,421 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:44:11,422 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 11:44:11,422 INFO ]: Interpolant automaton has 6 states [2018-06-22 11:44:11,422 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 11:44:11,422 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:44:11,422 INFO ]: Start difference. First operand 32 states and 63 transitions. Second operand 6 states. [2018-06-22 11:44:11,546 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:44:11,546 INFO ]: Finished difference Result 57 states and 117 transitions. [2018-06-22 11:44:11,546 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:44:11,546 INFO ]: Start accepts. Automaton has 6 states. Word has length 17 [2018-06-22 11:44:11,546 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:44:11,548 INFO ]: With dead ends: 57 [2018-06-22 11:44:11,548 INFO ]: Without dead ends: 57 [2018-06-22 11:44:11,548 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:44:11,549 INFO ]: Start minimizeSevpa. Operand 57 states. [2018-06-22 11:44:11,566 INFO ]: Finished minimizeSevpa. Reduced states from 57 to 43. [2018-06-22 11:44:11,567 INFO ]: Start removeUnreachable. Operand 43 states. [2018-06-22 11:44:11,570 INFO ]: Finished removeUnreachable. Reduced from 43 states to 43 states and 89 transitions. [2018-06-22 11:44:11,570 INFO ]: Start accepts. Automaton has 43 states and 89 transitions. Word has length 17 [2018-06-22 11:44:11,570 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:44:11,570 INFO ]: Abstraction has 43 states and 89 transitions. [2018-06-22 11:44:11,570 INFO ]: Interpolant automaton has 6 states. [2018-06-22 11:44:11,570 INFO ]: Start isEmpty. Operand 43 states and 89 transitions. [2018-06-22 11:44:11,572 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:44:11,572 INFO ]: Found error trace [2018-06-22 11:44:11,572 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:44:11,572 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:44:11,572 INFO ]: Analyzing trace with hash 1185359304, now seen corresponding path program 2 times [2018-06-22 11:44:11,572 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:44:11,572 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:44:11,576 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:11,576 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:44:11,576 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:11,598 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:44:11,660 INFO ]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:44:11,660 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:44:11,660 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 [2018-06-22 11:44:11,667 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:44:11,687 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:44:11,687 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:44:11,689 INFO ]: Computing forward predicates... [2018-06-22 11:44:11,891 INFO ]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:44:11,911 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:44:11,911 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2018-06-22 11:44:11,911 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:44:11,911 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:44:11,911 INFO ]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:44:11,912 INFO ]: Start difference. First operand 43 states and 89 transitions. Second operand 11 states. [2018-06-22 11:44:12,330 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:44:12,330 INFO ]: Finished difference Result 113 states and 243 transitions. [2018-06-22 11:44:12,331 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:44:12,331 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 11:44:12,331 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:44:12,333 INFO ]: With dead ends: 113 [2018-06-22 11:44:12,333 INFO ]: Without dead ends: 57 [2018-06-22 11:44:12,333 INFO ]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:44:12,333 INFO ]: Start minimizeSevpa. Operand 57 states. [2018-06-22 11:44:12,344 INFO ]: Finished minimizeSevpa. Reduced states from 57 to 39. [2018-06-22 11:44:12,344 INFO ]: Start removeUnreachable. Operand 39 states. [2018-06-22 11:44:12,346 INFO ]: Finished removeUnreachable. Reduced from 39 states to 39 states and 77 transitions. [2018-06-22 11:44:12,346 INFO ]: Start accepts. Automaton has 39 states and 77 transitions. Word has length 17 [2018-06-22 11:44:12,346 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:44:12,346 INFO ]: Abstraction has 39 states and 77 transitions. [2018-06-22 11:44:12,346 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:44:12,346 INFO ]: Start isEmpty. Operand 39 states and 77 transitions. [2018-06-22 11:44:12,348 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:44:12,348 INFO ]: Found error trace [2018-06-22 11:44:12,348 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:44:12,348 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:44:12,348 INFO ]: Analyzing trace with hash -1871981533, now seen corresponding path program 2 times [2018-06-22 11:44:12,348 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:44:12,348 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:44:12,349 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:12,349 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:44:12,349 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:44:12,359 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:44:12,417 INFO ]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:44:12,417 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:44:12,417 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 [2018-06-22 11:44:12,431 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:44:12,468 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:44:12,468 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:44:12,469 INFO ]: Computing forward predicates... [2018-06-22 11:44:12,551 INFO ]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:44:12,571 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:44:12,571 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2018-06-22 11:44:12,571 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:44:12,572 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:44:12,572 INFO ]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:44:12,572 INFO ]: Start difference. First operand 39 states and 77 transitions. Second operand 11 states. [2018-06-22 11:44:12,783 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:44:12,783 INFO ]: Finished difference Result 71 states and 150 transitions. [2018-06-22 11:44:12,785 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:44:12,785 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 11:44:12,785 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:44:12,785 INFO ]: With dead ends: 71 [2018-06-22 11:44:12,785 INFO ]: Without dead ends: 0 [2018-06-22 11:44:12,785 INFO ]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:44:12,785 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:44:12,786 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:44:12,786 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:44:12,786 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:44:12,786 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-22 11:44:12,786 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:44:12,786 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:44:12,786 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:44:12,786 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:44:12,786 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:44:12,791 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:44:12 BoogieIcfgContainer [2018-06-22 11:44:12,791 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:44:12,792 INFO ]: Toolchain (without parser) took 4877.15 ms. Allocated memory was 300.4 MB in the beginning and 341.8 MB in the end (delta: 41.4 MB). Free memory was 255.8 MB in the beginning and 216.4 MB in the end (delta: 39.4 MB). Peak memory consumption was 80.8 MB. Max. memory is 3.6 GB. [2018-06-22 11:44:12,793 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 300.4 MB. Free memory is still 265.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:44:12,793 INFO ]: ChcToBoogie took 52.65 ms. Allocated memory is still 300.4 MB. Free memory was 255.8 MB in the beginning and 253.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:44:12,794 INFO ]: Boogie Preprocessor took 42.25 ms. Allocated memory is still 300.4 MB. Free memory was 253.8 MB in the beginning and 251.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:44:12,794 INFO ]: RCFGBuilder took 280.83 ms. Allocated memory is still 300.4 MB. Free memory was 251.8 MB in the beginning and 242.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:44:12,795 INFO ]: TraceAbstraction took 4486.69 ms. Allocated memory was 300.4 MB in the beginning and 341.8 MB in the end (delta: 41.4 MB). Free memory was 242.8 MB in the beginning and 216.4 MB in the end (delta: 26.4 MB). Peak memory consumption was 67.8 MB. Max. memory is 3.6 GB. [2018-06-22 11:44:12,798 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 300.4 MB. Free memory is still 265.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 52.65 ms. Allocated memory is still 300.4 MB. Free memory was 255.8 MB in the beginning and 253.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 42.25 ms. Allocated memory is still 300.4 MB. Free memory was 253.8 MB in the beginning and 251.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 280.83 ms. Allocated memory is still 300.4 MB. Free memory was 251.8 MB in the beginning and 242.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4486.69 ms. Allocated memory was 300.4 MB in the beginning and 341.8 MB in the end (delta: 41.4 MB). Free memory was 242.8 MB in the beginning and 216.4 MB in the end (delta: 26.4 MB). Peak memory consumption was 67.8 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 3 procedures, 15 locations, 1 error locations. SAFE Result, 4.4s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 2.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 158 SDtfs, 38 SDslu, 343 SDs, 0 SdLazy, 719 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 62 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 6824 SizeOfPredicates, 20 NumberOfNonLiveVariables, 388 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 53/69 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/libc__memset_1.array.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-44-12-808.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/libc__memset_1.array.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-44-12-808.csv Received shutdown request...