java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/sally-chc-benchmarks/lfht/lfht_2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 12:34:01,288 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 12:34:01,290 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 12:34:01,305 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 12:34:01,305 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 12:34:01,306 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 12:34:01,310 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 12:34:01,312 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 12:34:01,314 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 12:34:01,314 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 12:34:01,316 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 12:34:01,317 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 12:34:01,318 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 12:34:01,319 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 12:34:01,319 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 12:34:01,322 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 12:34:01,324 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 12:34:01,327 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 12:34:01,328 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 12:34:01,329 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 12:34:01,330 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 12:34:01,333 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 12:34:01,333 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 12:34:01,333 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 12:34:01,334 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 12:34:01,335 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 12:34:01,336 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 12:34:01,336 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 12:34:01,337 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 12:34:01,338 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 12:34:01,338 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 12:34:01,339 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 12:34:01,339 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 12:34:01,340 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 12:34:01,340 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 12:34:01,341 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 12:34:01,353 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 12:34:01,354 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 12:34:01,354 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 12:34:01,354 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 12:34:01,355 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 12:34:01,355 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 12:34:01,356 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 12:34:01,356 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 12:34:01,356 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 12:34:01,356 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 12:34:01,357 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 12:34:01,357 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 12:34:01,357 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 12:34:01,357 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 12:34:01,358 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 12:34:01,358 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 12:34:01,358 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 12:34:01,358 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 12:34:01,359 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 12:34:01,360 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 12:34:01,360 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 12:34:01,417 INFO ]: Repository-Root is: /tmp [2018-06-22 12:34:01,433 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 12:34:01,439 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 12:34:01,440 INFO ]: Initializing SmtParser... [2018-06-22 12:34:01,441 INFO ]: SmtParser initialized [2018-06-22 12:34:01,441 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/sally-chc-benchmarks/lfht/lfht_2.smt2 [2018-06-22 12:34:01,443 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 12:34:01,535 INFO ]: Executing SMT file /storage/chc-comp/sally-chc-benchmarks/lfht/lfht_2.smt2 unknown [2018-06-22 12:34:01,984 INFO ]: Succesfully executed SMT file /storage/chc-comp/sally-chc-benchmarks/lfht/lfht_2.smt2 [2018-06-22 12:34:01,988 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 12:34:01,999 INFO ]: Walking toolchain with 4 elements. [2018-06-22 12:34:01,999 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 12:34:01,999 INFO ]: Initializing ChcToBoogie... [2018-06-22 12:34:01,999 INFO ]: ChcToBoogie initialized [2018-06-22 12:34:02,002 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:34:01" (1/1) ... [2018-06-22 12:34:02,067 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:34:02 Unit [2018-06-22 12:34:02,067 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 12:34:02,068 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 12:34:02,068 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 12:34:02,068 INFO ]: Boogie Preprocessor initialized [2018-06-22 12:34:02,094 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:34:02" (1/1) ... [2018-06-22 12:34:02,094 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:34:02" (1/1) ... [2018-06-22 12:34:02,108 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:34:02" (1/1) ... [2018-06-22 12:34:02,108 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:34:02" (1/1) ... [2018-06-22 12:34:02,120 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:34:02" (1/1) ... [2018-06-22 12:34:02,122 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:34:02" (1/1) ... [2018-06-22 12:34:02,125 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:34:02" (1/1) ... [2018-06-22 12:34:02,128 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 12:34:02,129 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 12:34:02,129 INFO ]: Initializing RCFGBuilder... [2018-06-22 12:34:02,129 INFO ]: RCFGBuilder initialized [2018-06-22 12:34:02,130 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:34:02" (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 12:34:02,147 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 12:34:02,147 INFO ]: Found specification of procedure False [2018-06-22 12:34:02,147 INFO ]: Found implementation of procedure False [2018-06-22 12:34:02,147 INFO ]: Specification and implementation of procedure invariant given in one single declaration [2018-06-22 12:34:02,147 INFO ]: Found specification of procedure invariant [2018-06-22 12:34:02,147 INFO ]: Found implementation of procedure invariant [2018-06-22 12:34:02,147 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 12:34:02,147 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 12:34:02,147 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 12:34:02,514 INFO ]: Using library mode [2018-06-22 12:34:02,516 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:34:02 BoogieIcfgContainer [2018-06-22 12:34:02,516 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 12:34:02,518 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 12:34:02,518 INFO ]: Initializing TraceAbstraction... [2018-06-22 12:34:02,525 INFO ]: TraceAbstraction initialized [2018-06-22 12:34:02,525 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:34:01" (1/3) ... [2018-06-22 12:34:02,526 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a3e4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:34:02, skipping insertion in model container [2018-06-22 12:34:02,526 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:34:02" (2/3) ... [2018-06-22 12:34:02,526 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a3e4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:34:02, skipping insertion in model container [2018-06-22 12:34:02,526 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:34:02" (3/3) ... [2018-06-22 12:34:02,529 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 12:34:02,538 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 12:34:02,547 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 12:34:02,595 INFO ]: Using default assertion order modulation [2018-06-22 12:34:02,596 INFO ]: Interprodecural is true [2018-06-22 12:34:02,596 INFO ]: Hoare is false [2018-06-22 12:34:02,596 INFO ]: Compute interpolants for FPandBP [2018-06-22 12:34:02,596 INFO ]: Backedges is TWOTRACK [2018-06-22 12:34:02,596 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 12:34:02,596 INFO ]: Difference is false [2018-06-22 12:34:02,596 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 12:34:02,596 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 12:34:02,615 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 12:34:02,627 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 12:34:02,628 INFO ]: Found error trace [2018-06-22 12:34:02,630 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:34:02,630 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:34:02,635 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 12:34:02,637 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:34:02,638 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:34:02,688 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:34:02,688 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:34:02,688 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:34:02,748 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:34:02,848 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 12:34:02,850 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 12:34:02,850 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 12:34:02,852 INFO ]: Interpolant automaton has 4 states [2018-06-22 12:34:02,862 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 12:34:02,862 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 12:34:02,864 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 12:34:02,995 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:34:02,995 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 12:34:02,996 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 12:34:02,996 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 12:34:02,997 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:34:03,007 INFO ]: With dead ends: 13 [2018-06-22 12:34:03,007 INFO ]: Without dead ends: 13 [2018-06-22 12:34:03,008 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 12:34:03,021 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 12:34:03,052 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 12:34:03,053 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 12:34:03,054 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 12:34:03,055 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 12:34:03,055 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:34:03,055 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 12:34:03,055 INFO ]: Interpolant automaton has 4 states. [2018-06-22 12:34:03,055 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 12:34:03,057 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 12:34:03,057 INFO ]: Found error trace [2018-06-22 12:34:03,057 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:34:03,057 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:34:03,057 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 12:34:03,057 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:34:03,057 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:34:03,058 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:34:03,058 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:34:03,058 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:34:03,221 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:34:03,860 WARN ]: Spent 239.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2018-06-22 12:34:03,967 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 12:34:03,968 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 12:34:03,968 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 12:34:03,980 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:34:04,042 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:34:04,053 INFO ]: Computing forward predicates... [2018-06-22 12:34:04,966 WARN ]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-06-22 12:34:05,417 WARN ]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 12:34:05,420 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 12:34:05,456 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 12:34:05,456 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 12:34:05,457 INFO ]: Interpolant automaton has 10 states [2018-06-22 12:34:05,457 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 12:34:05,457 INFO ]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-06-22 12:34:05,458 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 10 states. [2018-06-22 12:34:05,719 WARN ]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-06-22 12:34:06,008 WARN ]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-06-22 12:34:06,051 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:34:06,051 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 12:34:06,053 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 12:34:06,053 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-22 12:34:06,053 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:34:06,053 INFO ]: With dead ends: 17 [2018-06-22 12:34:06,053 INFO ]: Without dead ends: 17 [2018-06-22 12:34:06,054 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-06-22 12:34:06,055 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 12:34:06,058 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 12:34:06,058 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 12:34:06,058 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 12:34:06,058 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2018-06-22 12:34:06,058 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:34:06,058 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 12:34:06,058 INFO ]: Interpolant automaton has 10 states. [2018-06-22 12:34:06,058 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 12:34:06,059 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 12:34:06,059 INFO ]: Found error trace [2018-06-22 12:34:06,059 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:34:06,059 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:34:06,059 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 2 times [2018-06-22 12:34:06,059 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:34:06,059 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:34:06,060 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:34:06,060 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:34:06,060 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:34:06,233 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:34:07,956 WARN ]: Spent 1.18 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2018-06-22 12:34:08,162 WARN ]: Spent 151.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2018-06-22 12:34:08,302 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 12:34:08,302 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 12:34:08,302 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 12:34:08,317 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 12:34:08,400 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 12:34:08,400 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:34:08,410 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 12:35:12,317 INFO ]: Timeout while computing interpolants [2018-06-22 12:35:12,518 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 12:35:12,518 WARN ]: Verification canceled [2018-06-22 12:35:12,528 WARN ]: Timeout [2018-06-22 12:35:12,528 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:35:12 BoogieIcfgContainer [2018-06-22 12:35:12,528 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 12:35:12,529 INFO ]: Toolchain (without parser) took 70540.86 ms. Allocated memory was 306.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 246.8 MB in the beginning and 546.6 MB in the end (delta: -299.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-22 12:35:12,530 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.2 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 12:35:12,530 INFO ]: ChcToBoogie took 68.44 ms. Allocated memory is still 306.2 MB. Free memory was 246.8 MB in the beginning and 243.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 12:35:12,531 INFO ]: Boogie Preprocessor took 60.32 ms. Allocated memory is still 306.2 MB. Free memory was 243.8 MB in the beginning and 241.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 12:35:12,531 INFO ]: RCFGBuilder took 387.13 ms. Allocated memory is still 306.2 MB. Free memory was 241.8 MB in the beginning and 217.4 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 3.6 GB. [2018-06-22 12:35:12,535 INFO ]: TraceAbstraction took 70010.58 ms. Allocated memory was 306.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 217.4 MB in the beginning and 546.6 MB in the end (delta: -329.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 12:35:12,538 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 306.2 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 68.44 ms. Allocated memory is still 306.2 MB. Free memory was 246.8 MB in the beginning and 243.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 60.32 ms. Allocated memory is still 306.2 MB. Free memory was 243.8 MB in the beginning and 241.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 387.13 ms. Allocated memory is still 306.2 MB. Free memory was 241.8 MB in the beginning and 217.4 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 3.6 GB. * TraceAbstraction took 70010.58 ms. Allocated memory was 306.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 217.4 MB in the beginning and 546.6 MB in the end (delta: -329.2 MB). Peak memory consumption was 1.3 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 22 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 7 quantified variables from 8 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 69.9s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 9 SDslu, 47 SDs, 0 SdLazy, 31 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=2, 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, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 3028 SizeOfPredicates, 46 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 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/lfht_2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_12-35-12-550.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/lfht_2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_12-35-12-550.csv Completed graceful shutdown