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/vmt-chc-benchmarks/cav12/pipeline-bug.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:10:28,840 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:10:28,842 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:10:28,855 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:10:28,855 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:10:28,858 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:10:28,859 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:10:28,861 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:10:28,863 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:10:28,864 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:10:28,867 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:10:28,868 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:10:28,868 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:10:28,869 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:10:28,872 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:10:28,873 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:10:28,874 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:10:28,876 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:10:28,888 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:10:28,889 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:10:28,890 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:10:28,892 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:10:28,892 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:10:28,893 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:10:28,893 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:10:28,894 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:10:28,895 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:10:28,895 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:10:28,899 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:10:28,899 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:10:28,900 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:10:28,900 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:10:28,901 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:10:28,901 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:10:28,905 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:10:28,905 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 14:10:28,926 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:10:28,927 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:10:28,927 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:10:28,927 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:10:28,929 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:10:28,929 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:10:28,929 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:10:28,929 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:10:28,930 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:10:28,930 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:10:28,930 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:10:28,930 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:10:28,930 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:10:28,930 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:10:28,931 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:10:28,931 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:10:28,931 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:10:28,931 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:10:28,932 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:10:28,933 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:10:28,933 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:10:28,980 INFO ]: Repository-Root is: /tmp [2018-06-22 14:10:28,995 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:10:28,999 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:10:29,000 INFO ]: Initializing SmtParser... [2018-06-22 14:10:29,001 INFO ]: SmtParser initialized [2018-06-22 14:10:29,001 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/pipeline-bug.smt2 [2018-06-22 14:10:29,002 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 14:10:29,092 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/pipeline-bug.smt2 unknown [2018-06-22 14:10:30,112 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/pipeline-bug.smt2 [2018-06-22 14:10:30,116 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:10:30,123 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:10:30,124 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:10:30,124 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:10:30,124 INFO ]: ChcToBoogie initialized [2018-06-22 14:10:30,127 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:10:30" (1/1) ... [2018-06-22 14:10:30,202 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:10:30 Unit [2018-06-22 14:10:30,202 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:10:30,203 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:10:30,203 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:10:30,203 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:10:30,248 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:10:30" (1/1) ... [2018-06-22 14:10:30,249 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:10:30" (1/1) ... [2018-06-22 14:10:30,271 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:10:30" (1/1) ... [2018-06-22 14:10:30,271 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:10:30" (1/1) ... [2018-06-22 14:10:30,305 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:10:30" (1/1) ... [2018-06-22 14:10:30,306 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:10:30" (1/1) ... [2018-06-22 14:10:30,319 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:10:30" (1/1) ... [2018-06-22 14:10:30,325 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:10:30,326 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:10:30,326 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:10:30,326 INFO ]: RCFGBuilder initialized [2018-06-22 14:10:30,335 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:10:30" (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 14:10:30,347 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:10:30,347 INFO ]: Found specification of procedure False [2018-06-22 14:10:30,347 INFO ]: Found implementation of procedure False [2018-06-22 14:10:30,347 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:10:30,347 INFO ]: Found specification of procedure state [2018-06-22 14:10:30,347 INFO ]: Found implementation of procedure state [2018-06-22 14:10:30,347 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:10:30,347 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:10:30,347 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 14:10:31,332 INFO ]: Using library mode [2018-06-22 14:10:31,339 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:10:31 BoogieIcfgContainer [2018-06-22 14:10:31,339 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:10:31,340 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:10:31,340 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:10:31,343 INFO ]: TraceAbstraction initialized [2018-06-22 14:10:31,343 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:10:30" (1/3) ... [2018-06-22 14:10:31,345 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617bede9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:10:31, skipping insertion in model container [2018-06-22 14:10:31,345 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:10:30" (2/3) ... [2018-06-22 14:10:31,345 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617bede9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:10:31, skipping insertion in model container [2018-06-22 14:10:31,346 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:10:31" (3/3) ... [2018-06-22 14:10:31,347 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:10:31,357 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:10:31,366 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:10:31,414 INFO ]: Using default assertion order modulation [2018-06-22 14:10:31,415 INFO ]: Interprodecural is true [2018-06-22 14:10:31,415 INFO ]: Hoare is false [2018-06-22 14:10:31,415 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:10:31,415 INFO ]: Backedges is TWOTRACK [2018-06-22 14:10:31,415 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:10:31,415 INFO ]: Difference is false [2018-06-22 14:10:31,415 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:10:31,415 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:10:31,432 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:10:31,445 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:10:31,446 INFO ]: Found error trace [2018-06-22 14:10:31,446 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:10:31,447 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:10:31,453 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 14:10:31,455 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:10:31,455 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:10:31,492 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:10:31,492 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:10:31,492 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:10:31,549 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:10:31,723 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:10:31,725 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:10:31,725 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:10:31,728 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:10:31,740 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:10:31,740 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:10:31,742 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:10:31,929 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:10:31,932 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:10:31,933 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:10:31,934 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:10:31,935 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:10:31,948 INFO ]: With dead ends: 13 [2018-06-22 14:10:31,948 INFO ]: Without dead ends: 13 [2018-06-22 14:10:31,950 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 14:10:31,967 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:10:32,000 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:10:32,001 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:10:32,002 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:10:32,003 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:10:32,003 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:10:32,003 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:10:32,003 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:10:32,003 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:10:32,005 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:10:32,005 INFO ]: Found error trace [2018-06-22 14:10:32,005 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:10:32,005 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:10:32,005 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 14:10:32,005 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:10:32,005 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:10:32,006 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:10:32,006 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:10:32,006 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:10:32,210 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:10:32,686 WARN ]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-06-22 14:10:32,896 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:10:32,896 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:10:32,896 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 14:10:32,903 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:10:33,131 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:10:33,149 INFO ]: Computing forward predicates... [2018-06-22 14:10:57,648 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:10:57,673 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:10:57,673 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 14:10:57,674 INFO ]: Interpolant automaton has 9 states [2018-06-22 14:10:57,674 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 14:10:57,674 INFO ]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-06-22 14:10:57,674 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 14:10:57,944 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:10:57,944 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 14:10:57,945 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:10:57,945 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 14:10:57,945 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:10:57,945 INFO ]: With dead ends: 17 [2018-06-22 14:10:57,945 INFO ]: Without dead ends: 17 [2018-06-22 14:10:57,946 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-06-22 14:10:57,946 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 14:10:57,948 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 14:10:57,948 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 14:10:57,948 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 14:10:57,948 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2018-06-22 14:10:57,949 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:10:57,949 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 14:10:57,949 INFO ]: Interpolant automaton has 9 states. [2018-06-22 14:10:57,949 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 14:10:57,949 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 14:10:57,949 INFO ]: Found error trace [2018-06-22 14:10:57,949 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:10:57,949 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:10:57,950 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 2 times [2018-06-22 14:10:57,950 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:10:57,950 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:10:57,950 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:10:57,951 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:10:57,951 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:10:58,247 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:10:59,096 WARN ]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 14:10:59,357 WARN ]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 14:10:59,687 WARN ]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 14:10:59,915 WARN ]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 14:11:00,164 WARN ]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:11:00,635 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:11:00,635 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:11:00,635 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 14:11:00,655 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:11:00,906 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:11:00,906 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:11:00,929 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 14:11:33,406 INFO ]: Timeout while computing interpolants [2018-06-22 14:11:33,606 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:11:33,606 WARN ]: Verification canceled [2018-06-22 14:11:33,611 WARN ]: Timeout [2018-06-22 14:11:33,611 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:11:33 BoogieIcfgContainer [2018-06-22 14:11:33,611 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 14:11:33,612 INFO ]: Toolchain (without parser) took 63494.84 ms. Allocated memory was 331.9 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 270.8 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 14:11:33,612 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 14:11:33,613 INFO ]: ChcToBoogie took 78.71 ms. Allocated memory is still 331.9 MB. Free memory was 270.8 MB in the beginning and 266.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 3.6 GB. [2018-06-22 14:11:33,613 INFO ]: Boogie Preprocessor took 122.23 ms. Allocated memory is still 331.9 MB. Free memory was 266.0 MB in the beginning and 262.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 3.6 GB. [2018-06-22 14:11:33,613 INFO ]: RCFGBuilder took 1013.67 ms. Allocated memory was 331.9 MB in the beginning and 373.8 MB in the end (delta: 41.9 MB). Free memory was 262.8 MB in the beginning and 339.1 MB in the end (delta: -76.3 MB). Peak memory consumption was 88.6 MB. Max. memory is 3.6 GB. [2018-06-22 14:11:33,614 INFO ]: TraceAbstraction took 62270.57 ms. Allocated memory was 373.8 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 339.1 MB in the beginning and 1.3 GB in the end (delta: -987.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 14:11:33,622 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 78.71 ms. Allocated memory is still 331.9 MB. Free memory was 270.8 MB in the beginning and 266.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 122.23 ms. Allocated memory is still 331.9 MB. Free memory was 266.0 MB in the beginning and 262.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1013.67 ms. Allocated memory was 331.9 MB in the beginning and 373.8 MB in the end (delta: 41.9 MB). Free memory was 262.8 MB in the beginning and 339.1 MB in the end (delta: -76.3 MB). Peak memory consumption was 88.6 MB. Max. memory is 3.6 GB. * TraceAbstraction took 62270.57 ms. Allocated memory was 373.8 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 339.1 MB in the beginning and 1.3 GB in the end (delta: -987.4 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 54 quantified variables from 3 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 62.2s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 9 SDslu, 40 SDs, 0 SdLazy, 24 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s 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, 0.3s SatisfiabilityAnalysisTime, 25.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 956 SizeOfPredicates, 276 NumberOfNonLiveVariables, 373 ConjunctsInSsa, 9 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/pipeline-bug.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_14-11-33-629.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/pipeline-bug.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_14-11-33-629.csv Completed graceful shutdown