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_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental2.42.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 00:46:12,280 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 00:46:12,282 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 00:46:12,297 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 00:46:12,298 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 00:46:12,299 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 00:46:12,300 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 00:46:12,301 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 00:46:12,304 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 00:46:12,305 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 00:46:12,305 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 00:46:12,306 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 00:46:12,307 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 00:46:12,308 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 00:46:12,309 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 00:46:12,310 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 00:46:12,312 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 00:46:12,314 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 00:46:12,316 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 00:46:12,317 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 00:46:12,318 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 00:46:12,321 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 00:46:12,321 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 00:46:12,321 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 00:46:12,322 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 00:46:12,323 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 00:46:12,324 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 00:46:12,325 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 00:46:12,326 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 00:46:12,326 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 00:46:12,327 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 00:46:12,328 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 00:46:12,328 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 00:46:12,329 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 00:46:12,329 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 00:46:12,330 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 00:46:12,343 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 00:46:12,343 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 00:46:12,344 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 00:46:12,344 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 00:46:12,345 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 00:46:12,345 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 00:46:12,346 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 00:46:12,346 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 00:46:12,346 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:46:12,346 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 00:46:12,346 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 00:46:12,347 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 00:46:12,347 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 00:46:12,347 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 00:46:12,347 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 00:46:12,347 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 00:46:12,347 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 00:46:12,349 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 00:46:12,349 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 00:46:12,391 INFO ]: Repository-Root is: /tmp [2018-06-22 00:46:12,405 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 00:46:12,411 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 00:46:12,412 INFO ]: Initializing SmtParser... [2018-06-22 00:46:12,413 INFO ]: SmtParser initialized [2018-06-22 00:46:12,414 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental2.42.smt2 [2018-06-22 00:46:12,415 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 00:46:12,509 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental2.42.smt2 unknown [2018-06-22 00:46:13,294 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental2.42.smt2 [2018-06-22 00:46:13,308 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 00:46:13,323 INFO ]: Walking toolchain with 4 elements. [2018-06-22 00:46:13,324 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 00:46:13,324 INFO ]: Initializing ChcToBoogie... [2018-06-22 00:46:13,324 INFO ]: ChcToBoogie initialized [2018-06-22 00:46:13,327 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:46:13" (1/1) ... [2018-06-22 00:46:13,474 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:13 Unit [2018-06-22 00:46:13,474 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 00:46:13,475 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 00:46:13,475 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 00:46:13,475 INFO ]: Boogie Preprocessor initialized [2018-06-22 00:46:13,501 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:13" (1/1) ... [2018-06-22 00:46:13,501 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:13" (1/1) ... [2018-06-22 00:46:13,530 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:13" (1/1) ... [2018-06-22 00:46:13,530 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:13" (1/1) ... [2018-06-22 00:46:13,565 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:13" (1/1) ... [2018-06-22 00:46:13,569 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:13" (1/1) ... [2018-06-22 00:46:13,575 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:13" (1/1) ... [2018-06-22 00:46:13,583 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 00:46:13,583 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 00:46:13,583 INFO ]: Initializing RCFGBuilder... [2018-06-22 00:46:13,583 INFO ]: RCFGBuilder initialized [2018-06-22 00:46:13,584 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:13" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:46:13,597 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 00:46:13,597 INFO ]: Found specification of procedure gotoProc [2018-06-22 00:46:13,597 INFO ]: Found implementation of procedure gotoProc [2018-06-22 00:46:13,597 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 00:46:13,597 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 00:46:13,597 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 00:46:15,759 INFO ]: Using library mode [2018-06-22 00:46:15,759 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:46:15 BoogieIcfgContainer [2018-06-22 00:46:15,759 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 00:46:15,761 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 00:46:15,761 INFO ]: Initializing TraceAbstraction... [2018-06-22 00:46:15,764 INFO ]: TraceAbstraction initialized [2018-06-22 00:46:15,764 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:46:13" (1/3) ... [2018-06-22 00:46:15,765 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7ac6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:46:15, skipping insertion in model container [2018-06-22 00:46:15,765 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:13" (2/3) ... [2018-06-22 00:46:15,765 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7ac6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:46:15, skipping insertion in model container [2018-06-22 00:46:15,765 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:46:15" (3/3) ... [2018-06-22 00:46:15,767 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 00:46:15,776 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 00:46:15,784 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 00:46:15,826 INFO ]: Using default assertion order modulation [2018-06-22 00:46:15,827 INFO ]: Interprodecural is true [2018-06-22 00:46:15,827 INFO ]: Hoare is false [2018-06-22 00:46:15,827 INFO ]: Compute interpolants for FPandBP [2018-06-22 00:46:15,827 INFO ]: Backedges is TWOTRACK [2018-06-22 00:46:15,827 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 00:46:15,827 INFO ]: Difference is false [2018-06-22 00:46:15,827 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 00:46:15,827 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 00:46:15,848 INFO ]: Start isEmpty. Operand 146 states. [2018-06-22 00:46:15,864 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 00:46:15,864 INFO ]: Found error trace [2018-06-22 00:46:15,865 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:46:15,865 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:46:15,870 INFO ]: Analyzing trace with hash 615777974, now seen corresponding path program 1 times [2018-06-22 00:46:15,872 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:46:15,873 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:46:15,909 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:15,909 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:46:15,909 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:15,961 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:46:16,342 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:46:16,344 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:46:16,344 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:46:16,346 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:46:16,361 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:46:16,362 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:46:16,365 INFO ]: Start difference. First operand 146 states. Second operand 4 states. [2018-06-22 00:46:20,064 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:46:20,064 INFO ]: Finished difference Result 285 states and 555 transitions. [2018-06-22 00:46:20,065 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:46:20,066 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 00:46:20,067 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:46:20,130 INFO ]: With dead ends: 285 [2018-06-22 00:46:20,130 INFO ]: Without dead ends: 283 [2018-06-22 00:46:20,132 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 00:46:20,163 INFO ]: Start minimizeSevpa. Operand 283 states. [2018-06-22 00:46:20,313 INFO ]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-06-22 00:46:20,314 INFO ]: Start removeUnreachable. Operand 283 states. [2018-06-22 00:46:20,347 INFO ]: Finished removeUnreachable. Reduced from 283 states to 283 states and 553 transitions. [2018-06-22 00:46:20,350 INFO ]: Start accepts. Automaton has 283 states and 553 transitions. Word has length 8 [2018-06-22 00:46:20,351 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:46:20,351 INFO ]: Abstraction has 283 states and 553 transitions. [2018-06-22 00:46:20,351 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:46:20,351 INFO ]: Start isEmpty. Operand 283 states and 553 transitions. [2018-06-22 00:46:20,362 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 00:46:20,362 INFO ]: Found error trace [2018-06-22 00:46:20,362 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:46:20,362 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:46:20,362 INFO ]: Analyzing trace with hash 335647549, now seen corresponding path program 1 times [2018-06-22 00:46:20,362 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:46:20,362 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:46:20,363 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:20,363 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:46:20,363 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:20,378 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:46:20,598 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:46:20,598 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:46:20,598 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:46:20,599 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:46:20,599 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:46:20,600 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:46:20,600 INFO ]: Start difference. First operand 283 states and 553 transitions. Second operand 4 states. [2018-06-22 00:46:22,622 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:46:22,622 INFO ]: Finished difference Result 423 states and 828 transitions. [2018-06-22 00:46:22,623 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:46:22,623 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 00:46:22,623 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:46:22,654 INFO ]: With dead ends: 423 [2018-06-22 00:46:22,654 INFO ]: Without dead ends: 423 [2018-06-22 00:46:22,657 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 00:46:22,658 INFO ]: Start minimizeSevpa. Operand 423 states. [2018-06-22 00:46:22,760 INFO ]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-06-22 00:46:22,760 INFO ]: Start removeUnreachable. Operand 423 states. [2018-06-22 00:46:22,781 INFO ]: Finished removeUnreachable. Reduced from 423 states to 423 states and 828 transitions. [2018-06-22 00:46:22,782 INFO ]: Start accepts. Automaton has 423 states and 828 transitions. Word has length 9 [2018-06-22 00:46:22,782 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:46:22,782 INFO ]: Abstraction has 423 states and 828 transitions. [2018-06-22 00:46:22,782 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:46:22,782 INFO ]: Start isEmpty. Operand 423 states and 828 transitions. [2018-06-22 00:46:22,785 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 00:46:22,786 INFO ]: Found error trace [2018-06-22 00:46:22,786 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:46:22,786 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:46:22,786 INFO ]: Analyzing trace with hash -164302653, now seen corresponding path program 1 times [2018-06-22 00:46:22,786 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:46:22,786 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:46:22,787 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:22,787 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:46:22,787 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:22,814 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:46:23,051 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:46:23,051 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:46:23,051 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:46:23,051 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:46:23,051 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:46:23,051 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:46:23,052 INFO ]: Start difference. First operand 423 states and 828 transitions. Second operand 4 states. [2018-06-22 00:46:24,779 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:46:24,779 INFO ]: Finished difference Result 562 states and 1102 transitions. [2018-06-22 00:46:24,780 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:46:24,780 INFO ]: Start accepts. Automaton has 4 states. Word has length 10 [2018-06-22 00:46:24,780 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:46:24,838 INFO ]: With dead ends: 562 [2018-06-22 00:46:24,838 INFO ]: Without dead ends: 562 [2018-06-22 00:46:24,838 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 00:46:24,838 INFO ]: Start minimizeSevpa. Operand 562 states. [2018-06-22 00:46:24,928 INFO ]: Finished minimizeSevpa. Reduced states from 562 to 562. [2018-06-22 00:46:24,928 INFO ]: Start removeUnreachable. Operand 562 states. [2018-06-22 00:46:24,949 INFO ]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1102 transitions. [2018-06-22 00:46:24,949 INFO ]: Start accepts. Automaton has 562 states and 1102 transitions. Word has length 10 [2018-06-22 00:46:24,949 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:46:24,949 INFO ]: Abstraction has 562 states and 1102 transitions. [2018-06-22 00:46:24,949 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:46:24,949 INFO ]: Start isEmpty. Operand 562 states and 1102 transitions. [2018-06-22 00:46:24,983 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-22 00:46:24,983 INFO ]: Found error trace [2018-06-22 00:46:24,983 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:46:24,983 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:46:24,984 INFO ]: Analyzing trace with hash -1022113059, now seen corresponding path program 1 times [2018-06-22 00:46:24,984 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:46:24,984 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:46:24,984 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:24,984 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:46:24,984 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:25,064 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:46:25,906 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:46:25,906 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:46:25,906 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-22 00:46:25,906 INFO ]: Interpolant automaton has 8 states [2018-06-22 00:46:25,906 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 00:46:25,906 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 00:46:25,907 INFO ]: Start difference. First operand 562 states and 1102 transitions. Second operand 8 states. [2018-06-22 00:46:36,115 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:46:36,115 INFO ]: Finished difference Result 2020 states and 10441 transitions. [2018-06-22 00:46:36,115 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-22 00:46:36,115 INFO ]: Start accepts. Automaton has 8 states. Word has length 19 [2018-06-22 00:46:36,115 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:46:36,718 INFO ]: With dead ends: 2020 [2018-06-22 00:46:36,718 INFO ]: Without dead ends: 2016 [2018-06-22 00:46:36,718 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-06-22 00:46:36,719 INFO ]: Start minimizeSevpa. Operand 2016 states. [2018-06-22 00:46:37,618 INFO ]: Finished minimizeSevpa. Reduced states from 2016 to 1012. [2018-06-22 00:46:37,618 INFO ]: Start removeUnreachable. Operand 1012 states. [2018-06-22 00:46:37,669 INFO ]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 2230 transitions. [2018-06-22 00:46:37,669 INFO ]: Start accepts. Automaton has 1012 states and 2230 transitions. Word has length 19 [2018-06-22 00:46:37,669 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:46:37,669 INFO ]: Abstraction has 1012 states and 2230 transitions. [2018-06-22 00:46:37,669 INFO ]: Interpolant automaton has 8 states. [2018-06-22 00:46:37,669 INFO ]: Start isEmpty. Operand 1012 states and 2230 transitions. [2018-06-22 00:46:37,719 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-22 00:46:37,719 INFO ]: Found error trace [2018-06-22 00:46:37,719 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:46:37,719 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:46:37,720 INFO ]: Analyzing trace with hash -1023781355, now seen corresponding path program 1 times [2018-06-22 00:46:37,720 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:46:37,720 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:46:37,720 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:37,721 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:46:37,721 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:37,770 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:46:38,291 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:46:38,291 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:46:38,291 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-22 00:46:38,291 INFO ]: Interpolant automaton has 8 states [2018-06-22 00:46:38,291 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 00:46:38,291 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 00:46:38,292 INFO ]: Start difference. First operand 1012 states and 2230 transitions. Second operand 8 states. [2018-06-22 00:46:46,653 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:46:46,653 INFO ]: Finished difference Result 4056 states and 30688 transitions. [2018-06-22 00:46:46,653 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 00:46:46,653 INFO ]: Start accepts. Automaton has 8 states. Word has length 19 [2018-06-22 00:46:46,654 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:46:50,535 INFO ]: With dead ends: 4056 [2018-06-22 00:46:50,535 INFO ]: Without dead ends: 3827 [2018-06-22 00:46:50,535 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-06-22 00:46:50,537 INFO ]: Start minimizeSevpa. Operand 3827 states. [2018-06-22 00:46:53,449 INFO ]: Finished minimizeSevpa. Reduced states from 3827 to 1979. [2018-06-22 00:46:53,450 INFO ]: Start removeUnreachable. Operand 1979 states. [2018-06-22 00:46:53,605 INFO ]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 5009 transitions. [2018-06-22 00:46:53,605 INFO ]: Start accepts. Automaton has 1979 states and 5009 transitions. Word has length 19 [2018-06-22 00:46:53,605 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:46:53,605 INFO ]: Abstraction has 1979 states and 5009 transitions. [2018-06-22 00:46:53,605 INFO ]: Interpolant automaton has 8 states. [2018-06-22 00:46:53,605 INFO ]: Start isEmpty. Operand 1979 states and 5009 transitions. [2018-06-22 00:46:53,672 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-22 00:46:53,672 INFO ]: Found error trace [2018-06-22 00:46:53,672 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:46:53,672 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:46:53,674 INFO ]: Analyzing trace with hash 1518992392, now seen corresponding path program 1 times [2018-06-22 00:46:53,674 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:46:53,674 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:46:53,675 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:53,675 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:46:53,675 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:53,729 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:46:54,043 INFO ]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 00:46:54,044 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:46:54,044 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 00:46:54,044 INFO ]: Interpolant automaton has 7 states [2018-06-22 00:46:54,044 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 00:46:54,044 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 00:46:54,044 INFO ]: Start difference. First operand 1979 states and 5009 transitions. Second operand 7 states. [2018-06-22 00:47:01,649 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:47:01,649 INFO ]: Finished difference Result 6386 states and 41660 transitions. [2018-06-22 00:47:01,673 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 00:47:01,673 INFO ]: Start accepts. Automaton has 7 states. Word has length 19 [2018-06-22 00:47:01,673 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:47:04,422 INFO ]: With dead ends: 6386 [2018-06-22 00:47:04,422 INFO ]: Without dead ends: 6329 [2018-06-22 00:47:04,422 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-06-22 00:47:04,424 INFO ]: Start minimizeSevpa. Operand 6329 states. Received shutdown request... [2018-06-22 00:47:08,400 WARN ]: Verification canceled [2018-06-22 00:47:08,404 WARN ]: Timeout [2018-06-22 00:47:08,405 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:47:08 BoogieIcfgContainer [2018-06-22 00:47:08,405 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 00:47:08,406 INFO ]: Toolchain (without parser) took 55097.58 ms. Allocated memory was 308.8 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 216.5 MB in the beginning and 1.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 3.6 GB. [2018-06-22 00:47:08,408 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 00:47:08,409 INFO ]: ChcToBoogie took 150.94 ms. Allocated memory is still 308.8 MB. Free memory was 215.5 MB in the beginning and 210.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:47:08,409 INFO ]: Boogie Preprocessor took 107.59 ms. Allocated memory is still 308.8 MB. Free memory was 210.5 MB in the beginning and 207.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:47:08,410 INFO ]: RCFGBuilder took 2176.04 ms. Allocated memory was 308.8 MB in the beginning and 357.6 MB in the end (delta: 48.8 MB). Free memory was 207.5 MB in the beginning and 322.6 MB in the end (delta: -115.1 MB). Peak memory consumption was 49.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:47:08,410 INFO ]: TraceAbstraction took 52644.22 ms. Allocated memory was 357.6 MB in the beginning and 1.9 GB in the end (delta: 1.5 GB). Free memory was 322.6 MB in the beginning and 1.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 3.6 GB. [2018-06-22 00:47:08,414 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 150.94 ms. Allocated memory is still 308.8 MB. Free memory was 215.5 MB in the beginning and 210.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 107.59 ms. Allocated memory is still 308.8 MB. Free memory was 210.5 MB in the beginning and 207.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 2176.04 ms. Allocated memory was 308.8 MB in the beginning and 357.6 MB in the end (delta: 48.8 MB). Free memory was 207.5 MB in the beginning and 322.6 MB in the end (delta: -115.1 MB). Peak memory consumption was 49.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 52644.22 ms. Allocated memory was 357.6 MB in the beginning and 1.9 GB in the end (delta: 1.5 GB). Free memory was 322.6 MB in the beginning and 1.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. 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 executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 146 locations, 1 error locations. TIMEOUT Result, 52.5s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 41.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4055 SDtfs, 1468 SDslu, 10387 SDs, 0 SdLazy, 15522 SolverSat, 5012 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 25.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1979occurred in iteration=5, 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: 8.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 2852 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2790 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 13/13 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/incremental2.42.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_00-47-08-424.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/incremental2.42.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_00-47-08-424.csv Completed graceful shutdown