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/sally-chc-benchmarks/misc/frolloc_lifo_prop2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 02:50:45,374 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 02:50:45,376 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 02:50:45,389 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 02:50:45,389 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 02:50:45,391 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 02:50:45,392 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 02:50:45,395 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 02:50:45,396 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 02:50:45,397 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 02:50:45,398 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 02:50:45,399 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 02:50:45,400 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 02:50:45,401 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 02:50:45,401 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 02:50:45,402 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 02:50:45,404 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 02:50:45,406 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 02:50:45,408 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 02:50:45,409 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 02:50:45,410 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 02:50:45,412 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 02:50:45,413 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 02:50:45,413 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 02:50:45,414 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 02:50:45,415 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 02:50:45,416 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 02:50:45,416 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 02:50:45,417 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 02:50:45,418 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 02:50:45,418 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 02:50:45,419 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 02:50:45,419 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 02:50:45,420 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 02:50:45,421 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 02:50:45,421 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 02:50:45,459 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 02:50:45,460 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 02:50:45,460 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 02:50:45,460 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 02:50:45,462 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 02:50:45,462 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 02:50:45,463 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 02:50:45,463 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 02:50:45,463 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 02:50:45,463 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 02:50:45,463 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 02:50:45,463 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 02:50:45,470 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 02:50:45,470 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 02:50:45,470 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 02:50:45,470 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 02:50:45,470 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 02:50:45,473 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 02:50:45,473 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 02:50:45,526 INFO ]: Repository-Root is: /tmp [2018-06-22 02:50:45,543 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 02:50:45,550 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 02:50:45,551 INFO ]: Initializing SmtParser... [2018-06-22 02:50:45,552 INFO ]: SmtParser initialized [2018-06-22 02:50:45,552 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/sally-chc-benchmarks/misc/frolloc_lifo_prop2.smt2 [2018-06-22 02:50:45,554 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 02:50:45,669 INFO ]: Executing SMT file /storage/chc-comp/sally-chc-benchmarks/misc/frolloc_lifo_prop2.smt2 unknown [2018-06-22 02:50:46,085 INFO ]: Succesfully executed SMT file /storage/chc-comp/sally-chc-benchmarks/misc/frolloc_lifo_prop2.smt2 [2018-06-22 02:50:46,090 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 02:50:46,096 INFO ]: Walking toolchain with 4 elements. [2018-06-22 02:50:46,097 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 02:50:46,097 INFO ]: Initializing ChcToBoogie... [2018-06-22 02:50:46,097 INFO ]: ChcToBoogie initialized [2018-06-22 02:50:46,101 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:50:46" (1/1) ... [2018-06-22 02:50:46,176 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:46 Unit [2018-06-22 02:50:46,176 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 02:50:46,177 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 02:50:46,177 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 02:50:46,177 INFO ]: Boogie Preprocessor initialized [2018-06-22 02:50:46,225 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:46" (1/1) ... [2018-06-22 02:50:46,225 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:46" (1/1) ... [2018-06-22 02:50:46,251 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:46" (1/1) ... [2018-06-22 02:50:46,251 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:46" (1/1) ... [2018-06-22 02:50:46,267 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:46" (1/1) ... [2018-06-22 02:50:46,268 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:46" (1/1) ... [2018-06-22 02:50:46,281 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:46" (1/1) ... [2018-06-22 02:50:46,286 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 02:50:46,287 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 02:50:46,287 INFO ]: Initializing RCFGBuilder... [2018-06-22 02:50:46,287 INFO ]: RCFGBuilder initialized [2018-06-22 02:50:46,288 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:46" (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 02:50:46,310 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 02:50:46,310 INFO ]: Found specification of procedure gotoProc [2018-06-22 02:50:46,310 INFO ]: Found implementation of procedure gotoProc [2018-06-22 02:50:46,310 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 02:50:46,310 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 02:50:46,310 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 02:50:46,716 INFO ]: Using library mode [2018-06-22 02:50:46,717 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:50:46 BoogieIcfgContainer [2018-06-22 02:50:46,717 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 02:50:46,719 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 02:50:46,719 INFO ]: Initializing TraceAbstraction... [2018-06-22 02:50:46,722 INFO ]: TraceAbstraction initialized [2018-06-22 02:50:46,722 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:50:46" (1/3) ... [2018-06-22 02:50:46,723 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5bb651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:50:46, skipping insertion in model container [2018-06-22 02:50:46,724 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:46" (2/3) ... [2018-06-22 02:50:46,724 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5bb651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:50:46, skipping insertion in model container [2018-06-22 02:50:46,724 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:50:46" (3/3) ... [2018-06-22 02:50:46,726 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 02:50:46,737 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 02:50:46,746 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 02:50:46,791 INFO ]: Using default assertion order modulation [2018-06-22 02:50:46,791 INFO ]: Interprodecural is true [2018-06-22 02:50:46,791 INFO ]: Hoare is false [2018-06-22 02:50:46,791 INFO ]: Compute interpolants for FPandBP [2018-06-22 02:50:46,791 INFO ]: Backedges is TWOTRACK [2018-06-22 02:50:46,791 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 02:50:46,792 INFO ]: Difference is false [2018-06-22 02:50:46,792 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 02:50:46,792 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 02:50:46,808 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 02:50:46,825 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 02:50:46,825 INFO ]: Found error trace [2018-06-22 02:50:46,826 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:50:46,826 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:50:46,831 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 02:50:46,832 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:50:46,833 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:50:46,871 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:50:46,871 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:50:46,871 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:50:46,969 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:50:47,114 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:50:47,117 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 02:50:47,117 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 02:50:47,119 INFO ]: Interpolant automaton has 3 states [2018-06-22 02:50:47,131 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 02:50:47,131 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 02:50:47,134 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 02:50:47,236 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:50:47,236 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 02:50:47,237 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 02:50:47,238 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 02:50:47,239 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:50:47,251 INFO ]: With dead ends: 9 [2018-06-22 02:50:47,251 INFO ]: Without dead ends: 9 [2018-06-22 02:50:47,254 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 02:50:47,269 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 02:50:47,286 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 02:50:47,287 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 02:50:47,287 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 02:50:47,289 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 02:50:47,289 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:50:47,289 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 02:50:47,289 INFO ]: Interpolant automaton has 3 states. [2018-06-22 02:50:47,289 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 02:50:47,289 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 02:50:47,289 INFO ]: Found error trace [2018-06-22 02:50:47,289 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:50:47,290 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:50:47,290 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 02:50:47,290 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:50:47,290 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:50:47,291 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:50:47,291 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:50:47,291 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:50:47,430 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:50:47,753 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:50:47,753 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 02:50:47,753 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 02:50:47,773 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:50:47,929 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:50:47,940 INFO ]: Computing forward predicates... [2018-06-22 02:50:53,050 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:50:53,073 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 02:50:53,073 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 02:50:53,073 INFO ]: Interpolant automaton has 5 states [2018-06-22 02:50:53,073 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 02:50:53,073 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 02:50:53,073 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 02:50:53,214 WARN ]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-06-22 02:50:53,274 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:50:53,274 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 02:50:53,275 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 02:50:53,275 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 02:50:53,275 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:50:53,275 INFO ]: With dead ends: 10 [2018-06-22 02:50:53,275 INFO ]: Without dead ends: 10 [2018-06-22 02:50:53,276 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-22 02:50:53,276 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 02:50:53,277 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 02:50:53,277 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 02:50:53,277 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 02:50:53,278 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 02:50:53,278 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:50:53,278 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 02:50:53,278 INFO ]: Interpolant automaton has 5 states. [2018-06-22 02:50:53,278 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 02:50:53,278 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 02:50:53,278 INFO ]: Found error trace [2018-06-22 02:50:53,278 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:50:53,278 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:50:53,278 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 02:50:53,278 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:50:53,278 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:50:53,279 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:50:53,279 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:50:53,279 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:50:53,352 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:50:53,673 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:50:53,673 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 02:50:53,673 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 02:50:53,691 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 02:50:53,823 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 02:50:53,823 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:50:53,831 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 02:51:52,487 INFO ]: Timeout while computing interpolants [2018-06-22 02:51:52,688 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 02:51:52,688 WARN ]: Verification canceled [2018-06-22 02:51:52,693 WARN ]: Timeout [2018-06-22 02:51:52,693 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:51:52 BoogieIcfgContainer [2018-06-22 02:51:52,693 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 02:51:52,694 INFO ]: Toolchain (without parser) took 66603.34 ms. Allocated memory was 304.1 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 247.5 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 3.6 GB. [2018-06-22 02:51:52,697 INFO ]: SmtParser took 0.12 ms. Allocated memory is still 304.1 MB. Free memory is still 267.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 02:51:52,697 INFO ]: ChcToBoogie took 79.29 ms. Allocated memory is still 304.1 MB. Free memory was 246.5 MB in the beginning and 244.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 02:51:52,698 INFO ]: Boogie Preprocessor took 109.31 ms. Allocated memory is still 304.1 MB. Free memory was 244.5 MB in the beginning and 242.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 02:51:52,698 INFO ]: RCFGBuilder took 430.41 ms. Allocated memory is still 304.1 MB. Free memory was 242.5 MB in the beginning and 215.5 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. [2018-06-22 02:51:52,699 INFO ]: TraceAbstraction took 65974.57 ms. Allocated memory was 304.1 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 215.5 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 3.6 GB. [2018-06-22 02:51:52,724 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.12 ms. Allocated memory is still 304.1 MB. Free memory is still 267.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 79.29 ms. Allocated memory is still 304.1 MB. Free memory was 246.5 MB in the beginning and 244.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 109.31 ms. Allocated memory is still 304.1 MB. Free memory was 244.5 MB in the beginning and 242.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 430.41 ms. Allocated memory is still 304.1 MB. Free memory was 242.5 MB in the beginning and 215.5 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 65974.57 ms. Allocated memory was 304.1 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 215.5 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.9 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 BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 12 quantified variables from 3 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 65.9s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 15 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 287 SizeOfPredicates, 2 NumberOfNonLiveVariables, 408 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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/frolloc_lifo_prop2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_02-51-52-750.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/frolloc_lifo_prop2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_02-51-52-750.csv Completed graceful shutdown