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/eldarica-misc/LIA/Consistency/incremental.36.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 10:42:36,488 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 10:42:36,490 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 10:42:36,502 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 10:42:36,503 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 10:42:36,504 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 10:42:36,507 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 10:42:36,510 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 10:42:36,511 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 10:42:36,513 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 10:42:36,514 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 10:42:36,514 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 10:42:36,515 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 10:42:36,516 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 10:42:36,517 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 10:42:36,521 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 10:42:36,522 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 10:42:36,536 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 10:42:36,537 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 10:42:36,538 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 10:42:36,539 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 10:42:36,541 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 10:42:36,542 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 10:42:36,542 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 10:42:36,543 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 10:42:36,543 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 10:42:36,550 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 10:42:36,551 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 10:42:36,552 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 10:42:36,552 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 10:42:36,553 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 10:42:36,553 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 10:42:36,553 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 10:42:36,554 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 10:42:36,555 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 10:42:36,559 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 10:42:36,576 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 10:42:36,577 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 10:42:36,577 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 10:42:36,577 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 10:42:36,578 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 10:42:36,578 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 10:42:36,579 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 10:42:36,579 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 10:42:36,579 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 10:42:36,579 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 10:42:36,579 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 10:42:36,580 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 10:42:36,581 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 10:42:36,581 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 10:42:36,581 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 10:42:36,582 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 10:42:36,582 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 10:42:36,582 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 10:42:36,582 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 10:42:36,584 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 10:42:36,584 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 10:42:36,633 INFO ]: Repository-Root is: /tmp [2018-06-22 10:42:36,649 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 10:42:36,653 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 10:42:36,655 INFO ]: Initializing SmtParser... [2018-06-22 10:42:36,655 INFO ]: SmtParser initialized [2018-06-22 10:42:36,655 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental.36.smt2 [2018-06-22 10:42:36,657 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 10:42:36,738 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental.36.smt2 unknown [2018-06-22 10:42:37,518 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental.36.smt2 [2018-06-22 10:42:37,522 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 10:42:37,537 INFO ]: Walking toolchain with 4 elements. [2018-06-22 10:42:37,537 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 10:42:37,537 INFO ]: Initializing ChcToBoogie... [2018-06-22 10:42:37,537 INFO ]: ChcToBoogie initialized [2018-06-22 10:42:37,540 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 10:42:37" (1/1) ... [2018-06-22 10:42:37,665 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:42:37 Unit [2018-06-22 10:42:37,665 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 10:42:37,665 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 10:42:37,666 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 10:42:37,666 INFO ]: Boogie Preprocessor initialized [2018-06-22 10:42:37,696 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:42:37" (1/1) ... [2018-06-22 10:42:37,696 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:42:37" (1/1) ... [2018-06-22 10:42:37,725 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:42:37" (1/1) ... [2018-06-22 10:42:37,725 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:42:37" (1/1) ... [2018-06-22 10:42:37,759 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:42:37" (1/1) ... [2018-06-22 10:42:37,764 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:42:37" (1/1) ... [2018-06-22 10:42:37,776 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:42:37" (1/1) ... [2018-06-22 10:42:37,786 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 10:42:37,787 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 10:42:37,787 INFO ]: Initializing RCFGBuilder... [2018-06-22 10:42:37,787 INFO ]: RCFGBuilder initialized [2018-06-22 10:42:37,788 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:42:37" (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 10:42:37,808 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 10:42:37,808 INFO ]: Found specification of procedure False [2018-06-22 10:42:37,808 INFO ]: Found implementation of procedure False [2018-06-22 10:42:37,808 INFO ]: Specification and implementation of procedure combined_lturn__bar given in one single declaration [2018-06-22 10:42:37,808 INFO ]: Found specification of procedure combined_lturn__bar [2018-06-22 10:42:37,808 INFO ]: Found implementation of procedure combined_lturn__bar [2018-06-22 10:42:37,808 INFO ]: Specification and implementation of procedure lturn__bar given in one single declaration [2018-06-22 10:42:37,808 INFO ]: Found specification of procedure lturn__bar [2018-06-22 10:42:37,808 INFO ]: Found implementation of procedure lturn__bar [2018-06-22 10:42:37,808 INFO ]: Specification and implementation of procedure step_lturn given in one single declaration [2018-06-22 10:42:37,808 INFO ]: Found specification of procedure step_lturn [2018-06-22 10:42:37,809 INFO ]: Found implementation of procedure step_lturn [2018-06-22 10:42:37,809 INFO ]: Specification and implementation of procedure step_lturn__bar given in one single declaration [2018-06-22 10:42:37,809 INFO ]: Found specification of procedure step_lturn__bar [2018-06-22 10:42:37,809 INFO ]: Found implementation of procedure step_lturn__bar [2018-06-22 10:42:37,809 INFO ]: Specification and implementation of procedure combined_lturn given in one single declaration [2018-06-22 10:42:37,809 INFO ]: Found specification of procedure combined_lturn [2018-06-22 10:42:37,809 INFO ]: Found implementation of procedure combined_lturn [2018-06-22 10:42:37,809 INFO ]: Specification and implementation of procedure lturn given in one single declaration [2018-06-22 10:42:37,809 INFO ]: Found specification of procedure lturn [2018-06-22 10:42:37,809 INFO ]: Found implementation of procedure lturn [2018-06-22 10:42:37,809 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 10:42:37,809 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 10:42:37,809 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 10:42:39,482 INFO ]: Using library mode [2018-06-22 10:42:39,483 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:42:39 BoogieIcfgContainer [2018-06-22 10:42:39,483 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 10:42:39,484 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 10:42:39,484 INFO ]: Initializing TraceAbstraction... [2018-06-22 10:42:39,490 INFO ]: TraceAbstraction initialized [2018-06-22 10:42:39,490 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 10:42:37" (1/3) ... [2018-06-22 10:42:39,491 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7408fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 10:42:39, skipping insertion in model container [2018-06-22 10:42:39,491 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:42:37" (2/3) ... [2018-06-22 10:42:39,491 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7408fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 10:42:39, skipping insertion in model container [2018-06-22 10:42:39,491 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:42:39" (3/3) ... [2018-06-22 10:42:39,493 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 10:42:39,503 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 10:42:39,514 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 10:42:39,556 INFO ]: Using default assertion order modulation [2018-06-22 10:42:39,557 INFO ]: Interprodecural is true [2018-06-22 10:42:39,557 INFO ]: Hoare is false [2018-06-22 10:42:39,557 INFO ]: Compute interpolants for FPandBP [2018-06-22 10:42:39,557 INFO ]: Backedges is TWOTRACK [2018-06-22 10:42:39,557 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 10:42:39,557 INFO ]: Difference is false [2018-06-22 10:42:39,557 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 10:42:39,557 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 10:42:39,577 INFO ]: Start isEmpty. Operand 162 states. [2018-06-22 10:42:39,613 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 10:42:39,613 INFO ]: Found error trace [2018-06-22 10:42:39,615 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:42:39,615 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:42:39,620 INFO ]: Analyzing trace with hash -1860270043, now seen corresponding path program 1 times [2018-06-22 10:42:39,622 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:42:39,622 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:42:39,661 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:42:39,662 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:42:39,662 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:42:39,914 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:42:40,602 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:42:40,604 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:42:40,604 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 10:42:40,606 INFO ]: Interpolant automaton has 6 states [2018-06-22 10:42:40,621 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 10:42:40,622 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:42:40,624 INFO ]: Start difference. First operand 162 states. Second operand 6 states. [2018-06-22 10:42:43,218 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:42:43,218 INFO ]: Finished difference Result 246 states and 630 transitions. [2018-06-22 10:42:43,219 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 10:42:43,220 INFO ]: Start accepts. Automaton has 6 states. Word has length 17 [2018-06-22 10:42:43,220 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:42:43,246 INFO ]: With dead ends: 246 [2018-06-22 10:42:43,246 INFO ]: Without dead ends: 243 [2018-06-22 10:42:43,248 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:42:43,264 INFO ]: Start minimizeSevpa. Operand 243 states. [2018-06-22 10:42:43,392 INFO ]: Finished minimizeSevpa. Reduced states from 243 to 221. [2018-06-22 10:42:43,393 INFO ]: Start removeUnreachable. Operand 221 states. [2018-06-22 10:42:43,401 INFO ]: Finished removeUnreachable. Reduced from 221 states to 221 states and 569 transitions. [2018-06-22 10:42:43,402 INFO ]: Start accepts. Automaton has 221 states and 569 transitions. Word has length 17 [2018-06-22 10:42:43,403 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:42:43,403 INFO ]: Abstraction has 221 states and 569 transitions. [2018-06-22 10:42:43,403 INFO ]: Interpolant automaton has 6 states. [2018-06-22 10:42:43,403 INFO ]: Start isEmpty. Operand 221 states and 569 transitions. [2018-06-22 10:42:43,412 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 10:42:43,412 INFO ]: Found error trace [2018-06-22 10:42:43,412 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:42:43,412 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:42:43,412 INFO ]: Analyzing trace with hash -1343939167, now seen corresponding path program 1 times [2018-06-22 10:42:43,413 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:42:43,413 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:42:43,413 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:42:43,413 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:42:43,413 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:42:43,478 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:42:43,701 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:42:43,701 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:42:43,701 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 10:42:43,703 INFO ]: Interpolant automaton has 6 states [2018-06-22 10:42:43,703 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 10:42:43,703 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:42:43,704 INFO ]: Start difference. First operand 221 states and 569 transitions. Second operand 6 states. [2018-06-22 10:42:45,333 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:42:45,333 INFO ]: Finished difference Result 366 states and 1304 transitions. [2018-06-22 10:42:45,337 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 10:42:45,337 INFO ]: Start accepts. Automaton has 6 states. Word has length 17 [2018-06-22 10:42:45,337 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:42:45,349 INFO ]: With dead ends: 366 [2018-06-22 10:42:45,349 INFO ]: Without dead ends: 365 [2018-06-22 10:42:45,350 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:42:45,350 INFO ]: Start minimizeSevpa. Operand 365 states. [2018-06-22 10:42:45,493 INFO ]: Finished minimizeSevpa. Reduced states from 365 to 346. [2018-06-22 10:42:45,493 INFO ]: Start removeUnreachable. Operand 346 states. [2018-06-22 10:42:45,500 INFO ]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1231 transitions. [2018-06-22 10:42:45,501 INFO ]: Start accepts. Automaton has 346 states and 1231 transitions. Word has length 17 [2018-06-22 10:42:45,501 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:42:45,501 INFO ]: Abstraction has 346 states and 1231 transitions. [2018-06-22 10:42:45,501 INFO ]: Interpolant automaton has 6 states. [2018-06-22 10:42:45,501 INFO ]: Start isEmpty. Operand 346 states and 1231 transitions. [2018-06-22 10:42:45,511 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 10:42:45,511 INFO ]: Found error trace [2018-06-22 10:42:45,512 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:42:45,512 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:42:45,512 INFO ]: Analyzing trace with hash -1050026059, now seen corresponding path program 1 times [2018-06-22 10:42:45,512 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:42:45,512 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:42:45,513 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:42:45,513 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:42:45,513 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:42:45,555 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:42:45,713 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:42:45,713 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:42:45,713 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 10:42:45,713 INFO ]: Interpolant automaton has 7 states [2018-06-22 10:42:45,713 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 10:42:45,713 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 10:42:45,713 INFO ]: Start difference. First operand 346 states and 1231 transitions. Second operand 7 states. [2018-06-22 10:42:47,636 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:42:47,636 INFO ]: Finished difference Result 381 states and 1427 transitions. [2018-06-22 10:42:47,637 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 10:42:47,637 INFO ]: Start accepts. Automaton has 7 states. Word has length 21 [2018-06-22 10:42:47,637 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:42:47,648 INFO ]: With dead ends: 381 [2018-06-22 10:42:47,648 INFO ]: Without dead ends: 381 [2018-06-22 10:42:47,648 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 10:42:47,649 INFO ]: Start minimizeSevpa. Operand 381 states. [2018-06-22 10:42:47,754 INFO ]: Finished minimizeSevpa. Reduced states from 381 to 355. [2018-06-22 10:42:47,754 INFO ]: Start removeUnreachable. Operand 355 states. [2018-06-22 10:42:47,762 INFO ]: Finished removeUnreachable. Reduced from 355 states to 355 states and 1321 transitions. [2018-06-22 10:42:47,762 INFO ]: Start accepts. Automaton has 355 states and 1321 transitions. Word has length 21 [2018-06-22 10:42:47,762 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:42:47,762 INFO ]: Abstraction has 355 states and 1321 transitions. [2018-06-22 10:42:47,762 INFO ]: Interpolant automaton has 7 states. [2018-06-22 10:42:47,762 INFO ]: Start isEmpty. Operand 355 states and 1321 transitions. [2018-06-22 10:42:47,770 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 10:42:47,770 INFO ]: Found error trace [2018-06-22 10:42:47,770 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:42:47,770 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:42:47,770 INFO ]: Analyzing trace with hash -2041959613, now seen corresponding path program 1 times [2018-06-22 10:42:47,770 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:42:47,770 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:42:47,772 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:42:47,772 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:42:47,772 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:42:47,817 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:42:47,993 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 10:42:47,993 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:42:47,993 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 10:42:48,001 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:42:48,101 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:42:48,111 INFO ]: Computing forward predicates... [2018-06-22 10:42:48,173 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 10:42:48,207 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:42:48,207 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-06-22 10:42:48,207 INFO ]: Interpolant automaton has 8 states [2018-06-22 10:42:48,207 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 10:42:48,207 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 10:42:48,207 INFO ]: Start difference. First operand 355 states and 1321 transitions. Second operand 8 states. [2018-06-22 10:42:51,676 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:42:51,676 INFO ]: Finished difference Result 509 states and 2283 transitions. [2018-06-22 10:42:51,677 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 10:42:51,677 INFO ]: Start accepts. Automaton has 8 states. Word has length 25 [2018-06-22 10:42:51,677 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:42:51,692 INFO ]: With dead ends: 509 [2018-06-22 10:42:51,692 INFO ]: Without dead ends: 505 [2018-06-22 10:42:51,692 INFO ]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 10:42:51,693 INFO ]: Start minimizeSevpa. Operand 505 states. [2018-06-22 10:42:51,919 INFO ]: Finished minimizeSevpa. Reduced states from 505 to 486. [2018-06-22 10:42:51,919 INFO ]: Start removeUnreachable. Operand 486 states. [2018-06-22 10:42:51,930 INFO ]: Finished removeUnreachable. Reduced from 486 states to 486 states and 2177 transitions. [2018-06-22 10:42:51,930 INFO ]: Start accepts. Automaton has 486 states and 2177 transitions. Word has length 25 [2018-06-22 10:42:51,930 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:42:51,930 INFO ]: Abstraction has 486 states and 2177 transitions. [2018-06-22 10:42:51,930 INFO ]: Interpolant automaton has 8 states. [2018-06-22 10:42:51,930 INFO ]: Start isEmpty. Operand 486 states and 2177 transitions. [2018-06-22 10:42:51,941 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 10:42:51,941 INFO ]: Found error trace [2018-06-22 10:42:51,941 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:42:51,941 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:42:51,944 INFO ]: Analyzing trace with hash 1202804529, now seen corresponding path program 1 times [2018-06-22 10:42:51,944 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:42:51,944 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:42:51,944 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:42:51,944 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:42:51,944 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:42:52,000 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:42:52,295 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:42:52,295 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:42:52,296 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 10:42:52,296 INFO ]: Interpolant automaton has 7 states [2018-06-22 10:42:52,296 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 10:42:52,296 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 10:42:52,296 INFO ]: Start difference. First operand 486 states and 2177 transitions. Second operand 7 states. [2018-06-22 10:42:54,618 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:42:54,618 INFO ]: Finished difference Result 516 states and 2349 transitions. [2018-06-22 10:42:54,618 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 10:42:54,618 INFO ]: Start accepts. Automaton has 7 states. Word has length 21 [2018-06-22 10:42:54,618 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:42:54,633 INFO ]: With dead ends: 516 [2018-06-22 10:42:54,633 INFO ]: Without dead ends: 516 [2018-06-22 10:42:54,633 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 10:42:54,634 INFO ]: Start minimizeSevpa. Operand 516 states. [2018-06-22 10:42:54,861 INFO ]: Finished minimizeSevpa. Reduced states from 516 to 496. [2018-06-22 10:42:54,861 INFO ]: Start removeUnreachable. Operand 496 states. [2018-06-22 10:42:54,873 INFO ]: Finished removeUnreachable. Reduced from 496 states to 496 states and 2259 transitions. [2018-06-22 10:42:54,873 INFO ]: Start accepts. Automaton has 496 states and 2259 transitions. Word has length 21 [2018-06-22 10:42:54,873 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:42:54,873 INFO ]: Abstraction has 496 states and 2259 transitions. [2018-06-22 10:42:54,873 INFO ]: Interpolant automaton has 7 states. [2018-06-22 10:42:54,873 INFO ]: Start isEmpty. Operand 496 states and 2259 transitions. [2018-06-22 10:42:54,884 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 10:42:54,884 INFO ]: Found error trace [2018-06-22 10:42:54,884 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:42:54,884 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:42:54,884 INFO ]: Analyzing trace with hash 1811866323, now seen corresponding path program 1 times [2018-06-22 10:42:54,884 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:42:54,884 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:42:54,885 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:42:54,885 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:42:54,885 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:42:54,926 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:42:55,363 INFO ]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 10:42:55,363 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:42:55,363 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 10:42:55,363 INFO ]: Interpolant automaton has 6 states [2018-06-22 10:42:55,363 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 10:42:55,363 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:42:55,363 INFO ]: Start difference. First operand 496 states and 2259 transitions. Second operand 6 states. [2018-06-22 10:42:56,843 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:42:56,843 INFO ]: Finished difference Result 658 states and 3763 transitions. [2018-06-22 10:42:56,843 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 10:42:56,843 INFO ]: Start accepts. Automaton has 6 states. Word has length 25 [2018-06-22 10:42:56,844 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:42:56,869 INFO ]: With dead ends: 658 [2018-06-22 10:42:56,869 INFO ]: Without dead ends: 657 [2018-06-22 10:42:56,869 INFO ]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:42:56,870 INFO ]: Start minimizeSevpa. Operand 657 states. [2018-06-22 10:42:57,206 INFO ]: Finished minimizeSevpa. Reduced states from 657 to 632. [2018-06-22 10:42:57,206 INFO ]: Start removeUnreachable. Operand 632 states. [2018-06-22 10:42:57,234 INFO ]: Finished removeUnreachable. Reduced from 632 states to 632 states and 3612 transitions. [2018-06-22 10:42:57,234 INFO ]: Start accepts. Automaton has 632 states and 3612 transitions. Word has length 25 [2018-06-22 10:42:57,234 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:42:57,234 INFO ]: Abstraction has 632 states and 3612 transitions. [2018-06-22 10:42:57,234 INFO ]: Interpolant automaton has 6 states. [2018-06-22 10:42:57,234 INFO ]: Start isEmpty. Operand 632 states and 3612 transitions. [2018-06-22 10:42:57,246 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 10:42:57,246 INFO ]: Found error trace [2018-06-22 10:42:57,247 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:42:57,247 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:42:57,247 INFO ]: Analyzing trace with hash 1237648449, now seen corresponding path program 1 times [2018-06-22 10:42:57,247 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:42:57,247 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:42:57,247 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:42:57,247 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:42:57,247 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:42:57,286 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:42:57,438 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:42:57,439 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:42:57,439 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 10:42:57,439 INFO ]: Interpolant automaton has 7 states [2018-06-22 10:42:57,439 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 10:42:57,439 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 10:42:57,439 INFO ]: Start difference. First operand 632 states and 3612 transitions. Second operand 7 states. [2018-06-22 10:42:58,706 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:42:58,706 INFO ]: Finished difference Result 743 states and 4256 transitions. [2018-06-22 10:42:58,706 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 10:42:58,706 INFO ]: Start accepts. Automaton has 7 states. Word has length 21 [2018-06-22 10:42:58,707 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:42:58,730 INFO ]: With dead ends: 743 [2018-06-22 10:42:58,730 INFO ]: Without dead ends: 743 [2018-06-22 10:42:58,730 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 10:42:58,733 INFO ]: Start minimizeSevpa. Operand 743 states. [2018-06-22 10:42:59,112 INFO ]: Finished minimizeSevpa. Reduced states from 743 to 731. [2018-06-22 10:42:59,112 INFO ]: Start removeUnreachable. Operand 731 states. [2018-06-22 10:42:59,134 INFO ]: Finished removeUnreachable. Reduced from 731 states to 731 states and 4186 transitions. [2018-06-22 10:42:59,134 INFO ]: Start accepts. Automaton has 731 states and 4186 transitions. Word has length 21 [2018-06-22 10:42:59,134 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:42:59,134 INFO ]: Abstraction has 731 states and 4186 transitions. [2018-06-22 10:42:59,134 INFO ]: Interpolant automaton has 7 states. [2018-06-22 10:42:59,134 INFO ]: Start isEmpty. Operand 731 states and 4186 transitions. [2018-06-22 10:42:59,152 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 10:42:59,152 INFO ]: Found error trace [2018-06-22 10:42:59,152 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:42:59,152 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:42:59,152 INFO ]: Analyzing trace with hash -766798639, now seen corresponding path program 2 times [2018-06-22 10:42:59,152 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:42:59,152 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:42:59,153 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:42:59,153 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:42:59,153 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:42:59,202 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:42:59,471 INFO ]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 10:42:59,472 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:42:59,472 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 10:42:59,477 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 10:42:59,573 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 10:42:59,573 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:42:59,578 INFO ]: Computing forward predicates... [2018-06-22 10:42:59,728 INFO ]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 10:42:59,748 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:42:59,748 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-06-22 10:42:59,748 INFO ]: Interpolant automaton has 16 states [2018-06-22 10:42:59,748 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 10:42:59,748 INFO ]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-06-22 10:42:59,749 INFO ]: Start difference. First operand 731 states and 4186 transitions. Second operand 16 states. [2018-06-22 10:43:13,318 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:43:13,319 INFO ]: Finished difference Result 2147 states and 31307 transitions. [2018-06-22 10:43:13,320 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-06-22 10:43:13,320 INFO ]: Start accepts. Automaton has 16 states. Word has length 29 [2018-06-22 10:43:13,320 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:43:13,495 INFO ]: With dead ends: 2147 [2018-06-22 10:43:13,495 INFO ]: Without dead ends: 2143 [2018-06-22 10:43:13,496 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2018-06-22 10:43:13,497 INFO ]: Start minimizeSevpa. Operand 2143 states. [2018-06-22 10:43:16,080 INFO ]: Finished minimizeSevpa. Reduced states from 2143 to 1982. [2018-06-22 10:43:16,080 INFO ]: Start removeUnreachable. Operand 1982 states. [2018-06-22 10:43:16,224 INFO ]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 28839 transitions. [2018-06-22 10:43:16,224 INFO ]: Start accepts. Automaton has 1982 states and 28839 transitions. Word has length 29 [2018-06-22 10:43:16,224 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:43:16,224 INFO ]: Abstraction has 1982 states and 28839 transitions. [2018-06-22 10:43:16,224 INFO ]: Interpolant automaton has 16 states. [2018-06-22 10:43:16,224 INFO ]: Start isEmpty. Operand 1982 states and 28839 transitions. [2018-06-22 10:43:16,249 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 10:43:16,249 INFO ]: Found error trace [2018-06-22 10:43:16,249 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:43:16,249 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:43:16,249 INFO ]: Analyzing trace with hash -1648992799, now seen corresponding path program 1 times [2018-06-22 10:43:16,249 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:43:16,249 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:43:16,250 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:43:16,250 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 10:43:16,250 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:43:16,286 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:43:16,540 INFO ]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 10:43:16,540 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:43:16,540 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) [2018-06-22 10:43:16,552 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:43:16,639 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:43:16,643 INFO ]: Computing forward predicates... [2018-06-22 10:43:16,729 INFO ]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 10:43:16,750 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:43:16,750 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-06-22 10:43:16,750 INFO ]: Interpolant automaton has 14 states [2018-06-22 10:43:16,750 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 10:43:16,750 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-22 10:43:16,751 INFO ]: Start difference. First operand 1982 states and 28839 transitions. Second operand 14 states. [2018-06-22 10:43:24,791 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:43:24,791 INFO ]: Finished difference Result 3745 states and 80247 transitions. [2018-06-22 10:43:24,791 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 10:43:24,791 INFO ]: Start accepts. Automaton has 14 states. Word has length 29 [2018-06-22 10:43:24,791 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:43:25,336 INFO ]: With dead ends: 3745 [2018-06-22 10:43:25,336 INFO ]: Without dead ends: 3744 [2018-06-22 10:43:25,336 INFO ]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2018-06-22 10:43:25,338 INFO ]: Start minimizeSevpa. Operand 3744 states. [2018-06-22 10:43:34,405 INFO ]: Finished minimizeSevpa. Reduced states from 3744 to 3192. [2018-06-22 10:43:34,405 INFO ]: Start removeUnreachable. Operand 3192 states. [2018-06-22 10:43:36,525 INFO ]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 72538 transitions. [2018-06-22 10:43:36,525 INFO ]: Start accepts. Automaton has 3192 states and 72538 transitions. Word has length 29 [2018-06-22 10:43:36,525 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:43:36,525 INFO ]: Abstraction has 3192 states and 72538 transitions. [2018-06-22 10:43:36,525 INFO ]: Interpolant automaton has 14 states. [2018-06-22 10:43:36,525 INFO ]: Start isEmpty. Operand 3192 states and 72538 transitions. [2018-06-22 10:43:36,550 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 10:43:36,550 INFO ]: Found error trace [2018-06-22 10:43:36,550 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:43:36,551 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:43:36,553 INFO ]: Analyzing trace with hash -725777020, now seen corresponding path program 1 times [2018-06-22 10:43:36,553 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:43:36,553 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:43:36,554 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:43:36,554 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:43:36,554 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:43:36,584 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:43:36,753 INFO ]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 10:43:36,753 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:43:36,753 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 10:43:36,759 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:43:36,831 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:43:36,835 INFO ]: Computing forward predicates... [2018-06-22 10:43:37,019 INFO ]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 10:43:37,039 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:43:37,039 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2018-06-22 10:43:37,039 INFO ]: Interpolant automaton has 15 states [2018-06-22 10:43:37,039 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 10:43:37,039 INFO ]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-06-22 10:43:37,039 INFO ]: Start difference. First operand 3192 states and 72538 transitions. Second operand 15 states. Received shutdown request... [2018-06-22 10:43:37,179 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 10:43:37,179 WARN ]: Verification canceled [2018-06-22 10:43:37,183 WARN ]: Timeout [2018-06-22 10:43:37,183 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 10:43:37 BoogieIcfgContainer [2018-06-22 10:43:37,183 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 10:43:37,184 INFO ]: Toolchain (without parser) took 59661.41 ms. Allocated memory was 306.2 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 213.9 MB in the beginning and 976.0 MB in the end (delta: -762.1 MB). Peak memory consumption was 555.9 MB. Max. memory is 3.6 GB. [2018-06-22 10:43:37,185 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 306.2 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 10:43:37,186 INFO ]: ChcToBoogie took 127.89 ms. Allocated memory is still 306.2 MB. Free memory was 213.9 MB in the beginning and 208.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:43:37,188 INFO ]: Boogie Preprocessor took 120.71 ms. Allocated memory is still 306.2 MB. Free memory was 208.9 MB in the beginning and 205.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:43:37,188 INFO ]: RCFGBuilder took 1696.26 ms. Allocated memory was 306.2 MB in the beginning and 326.6 MB in the end (delta: 20.4 MB). Free memory was 205.9 MB in the beginning and 195.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 30.5 MB. Max. memory is 3.6 GB. [2018-06-22 10:43:37,189 INFO ]: TraceAbstraction took 57699.07 ms. Allocated memory was 326.6 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 195.9 MB in the beginning and 976.0 MB in the end (delta: -780.1 MB). Peak memory consumption was 517.5 MB. Max. memory is 3.6 GB. [2018-06-22 10:43:37,191 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 306.2 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 127.89 ms. Allocated memory is still 306.2 MB. Free memory was 213.9 MB in the beginning and 208.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 120.71 ms. Allocated memory is still 306.2 MB. Free memory was 208.9 MB in the beginning and 205.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1696.26 ms. Allocated memory was 306.2 MB in the beginning and 326.6 MB in the end (delta: 20.4 MB). Free memory was 205.9 MB in the beginning and 195.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 30.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 57699.07 ms. Allocated memory was 326.6 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 195.9 MB in the beginning and 976.0 MB in the end (delta: -780.1 MB). Peak memory consumption was 517.5 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was constructing difference of abstraction (3192states) and interpolant automaton (currently 6 states, 15 states before enhancement), while ReachableStatesComputation was computing reachable states (82 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 162 locations, 1 error locations. TIMEOUT Result, 57.6s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 37.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3945 SDtfs, 147 SDslu, 24088 SDs, 0 SdLazy, 32091 SolverSat, 1498 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3192occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 15.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 856 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 346 NumberOfCodeBlocks, 346 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 332 ConstructedInterpolants, 0 QuantifiedInterpolants, 21560 SizeOfPredicates, 16 NumberOfNonLiveVariables, 3323 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 43/85 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/incremental.36.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_10-43-37-208.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/incremental.36.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_10-43-37-208.csv Completed graceful shutdown