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_mini_cleaned.did_not_pay_0.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 12:22:32,464 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 12:22:32,466 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 12:22:32,481 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 12:22:32,481 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 12:22:32,482 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 12:22:32,486 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 12:22:32,488 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 12:22:32,490 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 12:22:32,490 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 12:22:32,492 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 12:22:32,492 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 12:22:32,493 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 12:22:32,494 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 12:22:32,495 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 12:22:32,495 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 12:22:32,499 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 12:22:32,501 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 12:22:32,513 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 12:22:32,515 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 12:22:32,516 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 12:22:32,517 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 12:22:32,518 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 12:22:32,518 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 12:22:32,519 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 12:22:32,519 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 12:22:32,520 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 12:22:32,524 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 12:22:32,525 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 12:22:32,525 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 12:22:32,526 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 12:22:32,526 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 12:22:32,526 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 12:22:32,527 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 12:22:32,528 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 12:22:32,531 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 12:22:32,551 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 12:22:32,551 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 12:22:32,551 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 12:22:32,552 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 12:22:32,552 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 12:22:32,553 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 12:22:32,553 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 12:22:32,553 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 12:22:32,553 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 12:22:32,553 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 12:22:32,554 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 12:22:32,555 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 12:22:32,555 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 12:22:32,555 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 12:22:32,555 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 12:22:32,555 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 12:22:32,556 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 12:22:32,557 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 12:22:32,557 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 12:22:32,558 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 12:22:32,558 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 12:22:32,600 INFO ]: Repository-Root is: /tmp [2018-06-22 12:22:32,614 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 12:22:32,619 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 12:22:32,621 INFO ]: Initializing SmtParser... [2018-06-22 12:22:32,621 INFO ]: SmtParser initialized [2018-06-22 12:22:32,622 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/sally-chc-benchmarks/lfht/lfht_2_mini_cleaned.did_not_pay_0.smt2 [2018-06-22 12:22:32,623 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 12:22:32,713 INFO ]: Executing SMT file /storage/chc-comp/sally-chc-benchmarks/lfht/lfht_2_mini_cleaned.did_not_pay_0.smt2 unknown [2018-06-22 12:22:33,034 INFO ]: Succesfully executed SMT file /storage/chc-comp/sally-chc-benchmarks/lfht/lfht_2_mini_cleaned.did_not_pay_0.smt2 [2018-06-22 12:22:33,038 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 12:22:33,045 INFO ]: Walking toolchain with 4 elements. [2018-06-22 12:22:33,045 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 12:22:33,045 INFO ]: Initializing ChcToBoogie... [2018-06-22 12:22:33,046 INFO ]: ChcToBoogie initialized [2018-06-22 12:22:33,049 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:22:33" (1/1) ... [2018-06-22 12:22:33,100 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:22:33 Unit [2018-06-22 12:22:33,101 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 12:22:33,104 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 12:22:33,104 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 12:22:33,104 INFO ]: Boogie Preprocessor initialized [2018-06-22 12:22:33,125 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:22:33" (1/1) ... [2018-06-22 12:22:33,125 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:22:33" (1/1) ... [2018-06-22 12:22:33,144 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:22:33" (1/1) ... [2018-06-22 12:22:33,145 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:22:33" (1/1) ... [2018-06-22 12:22:33,160 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:22:33" (1/1) ... [2018-06-22 12:22:33,161 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:22:33" (1/1) ... [2018-06-22 12:22:33,164 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:22:33" (1/1) ... [2018-06-22 12:22:33,171 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 12:22:33,172 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 12:22:33,172 INFO ]: Initializing RCFGBuilder... [2018-06-22 12:22:33,172 INFO ]: RCFGBuilder initialized [2018-06-22 12:22:33,173 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:22:33" (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 12:22:33,185 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 12:22:33,186 INFO ]: Found specification of procedure False [2018-06-22 12:22:33,186 INFO ]: Found implementation of procedure False [2018-06-22 12:22:33,186 INFO ]: Specification and implementation of procedure invariant given in one single declaration [2018-06-22 12:22:33,186 INFO ]: Found specification of procedure invariant [2018-06-22 12:22:33,186 INFO ]: Found implementation of procedure invariant [2018-06-22 12:22:33,186 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 12:22:33,186 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 12:22:33,186 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 12:22:33,470 INFO ]: Using library mode [2018-06-22 12:22:33,471 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:22:33 BoogieIcfgContainer [2018-06-22 12:22:33,471 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 12:22:33,477 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 12:22:33,477 INFO ]: Initializing TraceAbstraction... [2018-06-22 12:22:33,483 INFO ]: TraceAbstraction initialized [2018-06-22 12:22:33,483 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:22:33" (1/3) ... [2018-06-22 12:22:33,484 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587ed75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:22:33, skipping insertion in model container [2018-06-22 12:22:33,484 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:22:33" (2/3) ... [2018-06-22 12:22:33,484 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587ed75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:22:33, skipping insertion in model container [2018-06-22 12:22:33,484 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:22:33" (3/3) ... [2018-06-22 12:22:33,487 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 12:22:33,496 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 12:22:33,504 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 12:22:33,537 INFO ]: Using default assertion order modulation [2018-06-22 12:22:33,538 INFO ]: Interprodecural is true [2018-06-22 12:22:33,538 INFO ]: Hoare is false [2018-06-22 12:22:33,538 INFO ]: Compute interpolants for FPandBP [2018-06-22 12:22:33,538 INFO ]: Backedges is TWOTRACK [2018-06-22 12:22:33,538 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 12:22:33,538 INFO ]: Difference is false [2018-06-22 12:22:33,538 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 12:22:33,538 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 12:22:33,550 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 12:22:33,563 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 12:22:33,563 INFO ]: Found error trace [2018-06-22 12:22:33,564 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:22:33,564 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:22:33,572 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 12:22:33,574 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:22:33,574 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:22:33,608 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:22:33,608 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:22:33,608 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:22:33,678 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:22:33,865 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 12:22:33,867 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 12:22:33,867 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 12:22:33,869 INFO ]: Interpolant automaton has 4 states [2018-06-22 12:22:33,884 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 12:22:33,884 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 12:22:33,887 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 12:22:33,985 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:22:33,986 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 12:22:33,988 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 12:22:33,989 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 12:22:33,990 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:22:34,004 INFO ]: With dead ends: 13 [2018-06-22 12:22:34,004 INFO ]: Without dead ends: 13 [2018-06-22 12:22:34,006 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 12:22:34,021 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 12:22:34,040 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 12:22:34,042 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 12:22:34,049 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 12:22:34,050 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 12:22:34,050 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:22:34,051 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 12:22:34,051 INFO ]: Interpolant automaton has 4 states. [2018-06-22 12:22:34,051 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 12:22:34,052 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 12:22:34,052 INFO ]: Found error trace [2018-06-22 12:22:34,052 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:22:34,052 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:22:34,053 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 12:22:34,053 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:22:34,053 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:22:34,053 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:22:34,053 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:22:34,053 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:22:34,218 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:22:35,147 WARN ]: Spent 601.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 31 [2018-06-22 12:22:35,324 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 12:22:35,324 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 12:22:35,324 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 12:22:35,345 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:22:35,388 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:22:35,396 INFO ]: Computing forward predicates... [2018-06-22 12:22:52,809 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 12:22:52,831 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 12:22:52,831 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 12:22:52,832 INFO ]: Interpolant automaton has 8 states [2018-06-22 12:22:52,832 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 12:22:52,832 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 12:22:52,832 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 12:22:53,210 WARN ]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-06-22 12:22:53,394 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:22:53,394 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 12:22:53,395 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 12:22:53,395 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 12:22:53,395 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:22:53,396 INFO ]: With dead ends: 15 [2018-06-22 12:22:53,396 INFO ]: Without dead ends: 15 [2018-06-22 12:22:53,397 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-06-22 12:22:53,397 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 12:22:53,399 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 12:22:53,399 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 12:22:53,400 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 12:22:53,400 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 12:22:53,400 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:22:53,400 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 12:22:53,400 INFO ]: Interpolant automaton has 8 states. [2018-06-22 12:22:53,400 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 12:22:53,401 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 12:22:53,401 INFO ]: Found error trace [2018-06-22 12:22:53,401 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:22:53,401 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:22:53,401 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 12:22:53,401 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:22:53,401 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:22:53,402 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:22:53,402 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:22:53,402 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:22:53,522 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:22:53,938 WARN ]: Spent 249.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-06-22 12:22:55,200 WARN ]: Spent 1.20 s on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2018-06-22 12:22:55,570 WARN ]: Spent 347.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 56 [2018-06-22 12:22:55,727 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 12:22:55,727 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 12:22:55,727 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) [2018-06-22 12:22:55,742 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 12:22:55,811 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 12:22:55,811 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:22:55,816 INFO ]: Computing forward predicates... [2018-06-22 12:23:08,735 WARN ]: Spent 195.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2018-06-22 12:23:20,730 WARN ]: Spent 217.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2018-06-22 12:23:20,827 INFO ]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 12:23:20,850 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 12:23:20,850 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 12:23:20,850 INFO ]: Interpolant automaton has 13 states [2018-06-22 12:23:20,850 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 12:23:20,851 INFO ]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-06-22 12:23:20,851 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 12:23:21,044 WARN ]: Spent 153.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2018-06-22 12:23:21,254 WARN ]: Spent 174.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-06-22 12:23:21,406 WARN ]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-06-22 12:23:21,414 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:23:21,414 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 12:23:21,415 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 12:23:21,415 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 12:23:21,415 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:23:21,415 INFO ]: With dead ends: 13 [2018-06-22 12:23:21,415 INFO ]: Without dead ends: 0 [2018-06-22 12:23:21,415 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2018-06-22 12:23:21,415 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 12:23:21,415 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 12:23:21,415 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 12:23:21,416 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 12:23:21,416 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-22 12:23:21,416 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:23:21,416 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 12:23:21,416 INFO ]: Interpolant automaton has 13 states. [2018-06-22 12:23:21,416 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 12:23:21,416 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 12:23:21,421 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:23:21 BoogieIcfgContainer [2018-06-22 12:23:21,421 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 12:23:21,422 INFO ]: Toolchain (without parser) took 48382.80 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 257.9 MB in the beginning and 400.8 MB in the end (delta: -143.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 12:23:21,423 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 12:23:21,423 INFO ]: ChcToBoogie took 57.85 ms. Allocated memory is still 309.3 MB. Free memory was 256.9 MB in the beginning and 254.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 12:23:21,424 INFO ]: Boogie Preprocessor took 68.00 ms. Allocated memory is still 309.3 MB. Free memory was 254.9 MB in the beginning and 253.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-22 12:23:21,424 INFO ]: RCFGBuilder took 299.03 ms. Allocated memory is still 309.3 MB. Free memory was 253.8 MB in the beginning and 237.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-22 12:23:21,425 INFO ]: TraceAbstraction took 47943.74 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 237.8 MB in the beginning and 400.8 MB in the end (delta: -163.0 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. [2018-06-22 12:23:21,428 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 309.3 MB. Free memory is still 274.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 57.85 ms. Allocated memory is still 309.3 MB. Free memory was 256.9 MB in the beginning and 254.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 68.00 ms. Allocated memory is still 309.3 MB. Free memory was 254.9 MB in the beginning and 253.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 299.03 ms. Allocated memory is still 309.3 MB. Free memory was 253.8 MB in the beginning and 237.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 47943.74 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 237.8 MB in the beginning and 400.8 MB in the end (delta: -163.0 MB). Peak memory consumption was 1.0 GB. 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 47.8s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 18 SDslu, 70 SDs, 0 SdLazy, 57 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 45.9s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 16096 SizeOfPredicates, 104 NumberOfNonLiveVariables, 308 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 9/26 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/lfht_2_mini_cleaned.did_not_pay_0.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_12-23-21-442.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/lfht_2_mini_cleaned.did_not_pay_0.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_12-23-21-442.csv Received shutdown request...