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/HOLA/35.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:04:48,314 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:04:48,317 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:04:48,330 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:04:48,331 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:04:48,331 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:04:48,335 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:04:48,337 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:04:48,338 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:04:48,340 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:04:48,342 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:04:48,342 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:04:48,343 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:04:48,344 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:04:48,345 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:04:48,345 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:04:48,349 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:04:48,350 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:04:48,360 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:04:48,361 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:04:48,362 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:04:48,364 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:04:48,365 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:04:48,365 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:04:48,365 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:04:48,369 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:04:48,370 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:04:48,370 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:04:48,371 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:04:48,371 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:04:48,376 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:04:48,377 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:04:48,377 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:04:48,378 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:04:48,378 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:04:48,378 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:04:48,397 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:04:48,397 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:04:48,398 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:04:48,398 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:04:48,399 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:04:48,399 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:04:48,399 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:04:48,400 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:04:48,400 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:04:48,400 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:04:48,400 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:04:48,400 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:04:48,400 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:04:48,401 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:04:48,401 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:04:48,401 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:04:48,401 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:04:48,402 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:04:48,403 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:04:48,450 INFO ]: Repository-Root is: /tmp [2018-06-22 01:04:48,464 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:04:48,468 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:04:48,470 INFO ]: Initializing SmtParser... [2018-06-22 01:04:48,470 INFO ]: SmtParser initialized [2018-06-22 01:04:48,471 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/35.c.smt2 [2018-06-22 01:04:48,472 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 01:04:48,562 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/35.c.smt2 unknown [2018-06-22 01:04:48,881 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/35.c.smt2 [2018-06-22 01:04:48,886 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:04:48,903 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:04:48,904 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:04:48,904 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:04:48,904 INFO ]: ChcToBoogie initialized [2018-06-22 01:04:48,908 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:04:48" (1/1) ... [2018-06-22 01:04:49,018 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:04:49 Unit [2018-06-22 01:04:49,018 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:04:49,019 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:04:49,019 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:04:49,019 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:04:49,039 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:04:49" (1/1) ... [2018-06-22 01:04:49,039 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:04:49" (1/1) ... [2018-06-22 01:04:49,047 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:04:49" (1/1) ... [2018-06-22 01:04:49,047 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:04:49" (1/1) ... [2018-06-22 01:04:49,050 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:04:49" (1/1) ... [2018-06-22 01:04:49,052 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:04:49" (1/1) ... [2018-06-22 01:04:49,053 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:04:49" (1/1) ... [2018-06-22 01:04:49,056 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:04:49,056 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:04:49,056 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:04:49,056 INFO ]: RCFGBuilder initialized [2018-06-22 01:04:49,057 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:04:49" (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 01:04:49,069 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:04:49,069 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:04:49,069 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:04:49,069 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:04:49,069 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:04:49,069 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 01:04:49,433 INFO ]: Using library mode [2018-06-22 01:04:49,433 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:04:49 BoogieIcfgContainer [2018-06-22 01:04:49,434 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:04:49,434 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:04:49,434 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:04:49,438 INFO ]: TraceAbstraction initialized [2018-06-22 01:04:49,438 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:04:48" (1/3) ... [2018-06-22 01:04:49,439 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a2b42c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:04:49, skipping insertion in model container [2018-06-22 01:04:49,439 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:04:49" (2/3) ... [2018-06-22 01:04:49,439 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a2b42c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:04:49, skipping insertion in model container [2018-06-22 01:04:49,439 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:04:49" (3/3) ... [2018-06-22 01:04:49,442 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:04:49,450 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:04:49,458 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:04:49,492 INFO ]: Using default assertion order modulation [2018-06-22 01:04:49,492 INFO ]: Interprodecural is true [2018-06-22 01:04:49,492 INFO ]: Hoare is false [2018-06-22 01:04:49,492 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:04:49,492 INFO ]: Backedges is TWOTRACK [2018-06-22 01:04:49,492 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:04:49,492 INFO ]: Difference is false [2018-06-22 01:04:49,492 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:04:49,492 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:04:49,510 INFO ]: Start isEmpty. Operand 25 states. [2018-06-22 01:04:49,523 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-22 01:04:49,523 INFO ]: Found error trace [2018-06-22 01:04:49,524 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:04:49,524 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:04:49,530 INFO ]: Analyzing trace with hash 1418157954, now seen corresponding path program 1 times [2018-06-22 01:04:49,532 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:04:49,532 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:04:49,563 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:04:49,564 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:04:49,564 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:04:49,613 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:04:49,862 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:04:49,864 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:04:49,864 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-22 01:04:49,866 INFO ]: Interpolant automaton has 8 states [2018-06-22 01:04:49,878 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 01:04:49,878 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 01:04:49,880 INFO ]: Start difference. First operand 25 states. Second operand 8 states. [2018-06-22 01:04:50,302 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:04:50,302 INFO ]: Finished difference Result 29 states and 29 transitions. [2018-06-22 01:04:50,302 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 01:04:50,304 INFO ]: Start accepts. Automaton has 8 states. Word has length 19 [2018-06-22 01:04:50,304 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:04:50,312 INFO ]: With dead ends: 29 [2018-06-22 01:04:50,313 INFO ]: Without dead ends: 22 [2018-06-22 01:04:50,316 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-06-22 01:04:50,330 INFO ]: Start minimizeSevpa. Operand 22 states. [2018-06-22 01:04:50,347 INFO ]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-06-22 01:04:50,348 INFO ]: Start removeUnreachable. Operand 22 states. [2018-06-22 01:04:50,349 INFO ]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-06-22 01:04:50,350 INFO ]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-06-22 01:04:50,351 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:04:50,351 INFO ]: Abstraction has 22 states and 22 transitions. [2018-06-22 01:04:50,351 INFO ]: Interpolant automaton has 8 states. [2018-06-22 01:04:50,351 INFO ]: Start isEmpty. Operand 22 states and 22 transitions. [2018-06-22 01:04:50,351 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-22 01:04:50,351 INFO ]: Found error trace [2018-06-22 01:04:50,351 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:04:50,352 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:04:50,352 INFO ]: Analyzing trace with hash 162051395, now seen corresponding path program 1 times [2018-06-22 01:04:50,352 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:04:50,352 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:04:50,353 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:04:50,353 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:04:50,353 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:04:50,371 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:04:50,748 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:04:50,748 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:04:50,748 INFO ]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-06-22 01:04:50,750 INFO ]: Interpolant automaton has 13 states [2018-06-22 01:04:50,750 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 01:04:50,750 INFO ]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-06-22 01:04:50,751 INFO ]: Start difference. First operand 22 states and 22 transitions. Second operand 13 states. [2018-06-22 01:04:51,066 WARN ]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-06-22 01:04:51,328 WARN ]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-06-22 01:04:51,746 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:04:51,746 INFO ]: Finished difference Result 30 states and 30 transitions. [2018-06-22 01:04:51,746 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 01:04:51,746 INFO ]: Start accepts. Automaton has 13 states. Word has length 19 [2018-06-22 01:04:51,746 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:04:51,747 INFO ]: With dead ends: 30 [2018-06-22 01:04:51,747 INFO ]: Without dead ends: 27 [2018-06-22 01:04:51,748 INFO ]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2018-06-22 01:04:51,749 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 01:04:51,752 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 24. [2018-06-22 01:04:51,752 INFO ]: Start removeUnreachable. Operand 24 states. [2018-06-22 01:04:51,752 INFO ]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-06-22 01:04:51,752 INFO ]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 19 [2018-06-22 01:04:51,752 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:04:51,752 INFO ]: Abstraction has 24 states and 24 transitions. [2018-06-22 01:04:51,752 INFO ]: Interpolant automaton has 13 states. [2018-06-22 01:04:51,752 INFO ]: Start isEmpty. Operand 24 states and 24 transitions. [2018-06-22 01:04:51,753 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-22 01:04:51,753 INFO ]: Found error trace [2018-06-22 01:04:51,753 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] [2018-06-22 01:04:51,753 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:04:51,754 INFO ]: Analyzing trace with hash -1502702723, now seen corresponding path program 1 times [2018-06-22 01:04:51,754 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:04:51,754 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:04:51,754 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:04:51,754 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:04:51,754 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:04:51,772 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:04:52,108 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:04:52,108 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:04:52,108 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 01:04:52,115 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:04:52,160 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:04:52,170 INFO ]: Computing forward predicates... [2018-06-22 01:04:52,820 INFO ]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:04:52,841 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:04:52,841 INFO ]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 25 [2018-06-22 01:04:52,842 INFO ]: Interpolant automaton has 25 states [2018-06-22 01:04:52,842 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-22 01:04:52,842 INFO ]: CoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2018-06-22 01:04:52,842 INFO ]: Start difference. First operand 24 states and 24 transitions. Second operand 25 states. [2018-06-22 01:04:53,517 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:04:53,517 INFO ]: Finished difference Result 14 states and 13 transitions. [2018-06-22 01:04:53,517 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 01:04:53,517 INFO ]: Start accepts. Automaton has 25 states. Word has length 23 [2018-06-22 01:04:53,517 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:04:53,517 INFO ]: With dead ends: 14 [2018-06-22 01:04:53,517 INFO ]: Without dead ends: 0 [2018-06-22 01:04:53,518 INFO ]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=200, Invalid=922, Unknown=0, NotChecked=0, Total=1122 [2018-06-22 01:04:53,518 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:04:53,518 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:04:53,518 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:04:53,518 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:04:53,518 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-06-22 01:04:53,518 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:04:53,518 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:04:53,518 INFO ]: Interpolant automaton has 25 states. [2018-06-22 01:04:53,518 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:04:53,518 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:04:53,523 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:04:53 BoogieIcfgContainer [2018-06-22 01:04:53,523 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:04:53,523 INFO ]: Toolchain (without parser) took 4637.21 ms. Allocated memory was 307.2 MB in the beginning and 341.3 MB in the end (delta: 34.1 MB). Free memory was 259.6 MB in the beginning and 250.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 43.2 MB. Max. memory is 3.6 GB. [2018-06-22 01:04:53,524 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:04:53,525 INFO ]: ChcToBoogie took 114.11 ms. Allocated memory is still 307.2 MB. Free memory was 259.6 MB in the beginning and 257.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:04:53,525 INFO ]: Boogie Preprocessor took 37.22 ms. Allocated memory is still 307.2 MB. Free memory was 257.6 MB in the beginning and 255.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:04:53,525 INFO ]: RCFGBuilder took 377.37 ms. Allocated memory is still 307.2 MB. Free memory was 255.6 MB in the beginning and 243.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:04:53,526 INFO ]: TraceAbstraction took 4088.29 ms. Allocated memory was 307.2 MB in the beginning and 341.3 MB in the end (delta: 34.1 MB). Free memory was 243.6 MB in the beginning and 250.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 3.6 GB. [2018-06-22 01:04:53,529 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 114.11 ms. Allocated memory is still 307.2 MB. Free memory was 259.6 MB in the beginning and 257.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.22 ms. Allocated memory is still 307.2 MB. Free memory was 257.6 MB in the beginning and 255.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 377.37 ms. Allocated memory is still 307.2 MB. Free memory was 255.6 MB in the beginning and 243.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4088.29 ms. Allocated memory was 307.2 MB in the beginning and 341.3 MB in the end (delta: 34.1 MB). Free memory was 243.6 MB in the beginning and 250.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. SAFE Result, 4.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 232 SDslu, 310 SDs, 0 SdLazy, 216 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 4574 SizeOfPredicates, 22 NumberOfNonLiveVariables, 167 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/35.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-04-53-539.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/35.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-04-53-539.csv Received shutdown request...