java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_2_BUG.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:38:33,119 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:38:33,121 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:38:33,133 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:38:33,133 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:38:33,134 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:38:33,136 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:38:33,137 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:38:33,139 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:38:33,140 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:38:33,143 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:38:33,143 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:38:33,144 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:38:33,146 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:38:33,149 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:38:33,150 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:38:33,152 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:38:33,163 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:38:33,165 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:38:33,166 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:38:33,167 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:38:33,170 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:38:33,170 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:38:33,170 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:38:33,171 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:38:33,172 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:38:33,173 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:38:33,174 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:38:33,175 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:38:33,175 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:38:33,176 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:38:33,177 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:38:33,177 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:38:33,178 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:38:33,179 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:38:33,179 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:38:33,199 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:38:33,199 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:38:33,199 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:38:33,199 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:38:33,201 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:38:33,201 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:38:33,201 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:38:33,201 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:38:33,201 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:38:33,202 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:38:33,203 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:38:33,204 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:38:33,204 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:38:33,204 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:38:33,204 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:38:33,204 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:38:33,205 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:38:33,206 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:38:33,206 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:38:33,255 INFO ]: Repository-Root is: /tmp [2018-06-22 04:38:33,271 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:38:33,277 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:38:33,279 INFO ]: Initializing SmtParser... [2018-06-22 04:38:33,279 INFO ]: SmtParser initialized [2018-06-22 04:38:33,280 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_2_BUG.cil.smt2 [2018-06-22 04:38:33,281 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 04:38:33,375 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_2_BUG.cil.smt2 unknown [2018-06-22 04:38:34,122 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_2_BUG.cil.smt2 [2018-06-22 04:38:34,129 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:38:34,145 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:38:34,145 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:38:34,145 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:38:34,146 INFO ]: ChcToBoogie initialized [2018-06-22 04:38:34,149 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:38:34" (1/1) ... [2018-06-22 04:38:34,281 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:38:34 Unit [2018-06-22 04:38:34,281 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:38:34,282 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:38:34,282 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:38:34,282 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:38:34,306 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:38:34" (1/1) ... [2018-06-22 04:38:34,306 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:38:34" (1/1) ... [2018-06-22 04:38:34,317 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:38:34" (1/1) ... [2018-06-22 04:38:34,318 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:38:34" (1/1) ... [2018-06-22 04:38:34,333 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:38:34" (1/1) ... [2018-06-22 04:38:34,335 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:38:34" (1/1) ... [2018-06-22 04:38:34,339 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:38:34" (1/1) ... [2018-06-22 04:38:34,345 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:38:34,346 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:38:34,346 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:38:34,346 INFO ]: RCFGBuilder initialized [2018-06-22 04:38:34,347 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:38:34" (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 04:38:34,362 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:38:34,362 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:38:34,362 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:38:34,362 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:38:34,362 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:38:34,362 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 04:38:34,789 INFO ]: Using library mode [2018-06-22 04:38:34,790 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:38:34 BoogieIcfgContainer [2018-06-22 04:38:34,790 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:38:34,791 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:38:34,791 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:38:34,795 INFO ]: TraceAbstraction initialized [2018-06-22 04:38:34,795 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:38:34" (1/3) ... [2018-06-22 04:38:34,796 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135abc46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:38:34, skipping insertion in model container [2018-06-22 04:38:34,796 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:38:34" (2/3) ... [2018-06-22 04:38:34,796 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135abc46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:38:34, skipping insertion in model container [2018-06-22 04:38:34,796 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:38:34" (3/3) ... [2018-06-22 04:38:34,798 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:38:34,809 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:38:34,818 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:38:34,869 INFO ]: Using default assertion order modulation [2018-06-22 04:38:34,870 INFO ]: Interprodecural is true [2018-06-22 04:38:34,870 INFO ]: Hoare is false [2018-06-22 04:38:34,870 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:38:34,870 INFO ]: Backedges is TWOTRACK [2018-06-22 04:38:34,870 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:38:34,870 INFO ]: Difference is false [2018-06-22 04:38:34,870 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:38:34,870 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:38:34,889 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:38:34,898 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:38:34,898 INFO ]: Found error trace [2018-06-22 04:38:34,899 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:38:34,900 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:38:34,903 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 04:38:34,905 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:38:34,905 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:38:34,937 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:38:34,937 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:38:34,938 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:38:35,008 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:38:35,094 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:38:35,096 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:38:35,096 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:38:35,098 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:38:35,108 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:38:35,109 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:38:35,111 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:38:35,188 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:38:35,188 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:38:35,188 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:38:35,205 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:38:35,205 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:38:35,213 INFO ]: With dead ends: 9 [2018-06-22 04:38:35,214 INFO ]: Without dead ends: 9 [2018-06-22 04:38:35,215 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:38:35,229 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:38:35,256 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:38:35,258 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:38:35,258 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:38:35,264 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:38:35,265 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:38:35,265 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:38:35,265 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:38:35,265 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:38:35,265 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:38:35,265 INFO ]: Found error trace [2018-06-22 04:38:35,265 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:38:35,265 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:38:35,266 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 04:38:35,266 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:38:35,266 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:38:35,267 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:38:35,267 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:38:35,267 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:38:35,401 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:38:35,661 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:38:35,661 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:38:35,661 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 04:38:35,670 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:38:35,811 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:38:35,826 INFO ]: Computing forward predicates... [2018-06-22 04:38:36,534 WARN ]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:38:36,536 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:38:36,558 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:38:36,558 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 04:38:36,558 INFO ]: Interpolant automaton has 5 states [2018-06-22 04:38:36,559 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 04:38:36,559 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 04:38:36,559 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 04:38:36,970 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:38:36,970 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:38:36,970 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 04:38:36,970 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 04:38:36,970 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:38:36,971 INFO ]: With dead ends: 11 [2018-06-22 04:38:36,971 INFO ]: Without dead ends: 11 [2018-06-22 04:38:36,971 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-06-22 04:38:36,972 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:38:36,973 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:38:36,973 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:38:36,973 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:38:36,973 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 04:38:36,973 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:38:36,973 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:38:36,973 INFO ]: Interpolant automaton has 5 states. [2018-06-22 04:38:36,973 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:38:36,975 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:38:36,975 INFO ]: Found error trace [2018-06-22 04:38:36,975 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:38:36,975 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:38:36,975 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 04:38:36,975 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:38:36,975 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:38:36,976 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:38:36,976 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:38:36,976 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:38:37,196 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:38:37,600 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:38:37,601 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:38:37,601 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 04:38:37,608 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:38:37,765 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:38:37,765 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:38:37,778 INFO ]: Computing forward predicates... [2018-06-22 04:38:39,475 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:38:39,496 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:38:39,496 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 04:38:39,496 INFO ]: Interpolant automaton has 9 states [2018-06-22 04:38:39,496 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 04:38:39,496 INFO ]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-06-22 04:38:39,497 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-06-22 04:38:39,862 WARN ]: Spent 339.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 5 [2018-06-22 04:38:40,063 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:38:40,063 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 04:38:40,083 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 04:38:40,083 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-22 04:38:40,083 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:38:40,083 INFO ]: With dead ends: 12 [2018-06-22 04:38:40,083 INFO ]: Without dead ends: 12 [2018-06-22 04:38:40,084 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-06-22 04:38:40,084 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 04:38:40,085 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 04:38:40,085 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 04:38:40,085 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 04:38:40,085 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 04:38:40,086 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:38:40,086 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 04:38:40,086 INFO ]: Interpolant automaton has 9 states. [2018-06-22 04:38:40,086 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 04:38:40,086 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 04:38:40,086 INFO ]: Found error trace [2018-06-22 04:38:40,086 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:38:40,086 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:38:40,086 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 3 times [2018-06-22 04:38:40,086 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:38:40,086 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:38:40,087 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:38:40,087 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:38:40,087 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:38:40,225 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:38:40,611 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:38:40,612 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:38:40,612 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:38:40,618 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:38:40,799 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 04:38:40,799 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:38:40,811 INFO ]: Computing forward predicates... [2018-06-22 04:38:44,352 WARN ]: Spent 923.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 14 [2018-06-22 04:38:44,677 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:38:44,713 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:38:44,713 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-06-22 04:38:44,713 INFO ]: Interpolant automaton has 11 states [2018-06-22 04:38:44,713 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 04:38:44,713 INFO ]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-06-22 04:38:44,713 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-06-22 04:38:45,196 WARN ]: Spent 397.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 5 [2018-06-22 04:38:46,162 WARN ]: Spent 877.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 10 [2018-06-22 04:38:46,998 WARN ]: Spent 706.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2018-06-22 04:38:47,244 WARN ]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-06-22 04:38:47,300 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:38:47,301 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 04:38:47,301 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 04:38:47,301 INFO ]: Start accepts. Automaton has 11 states. Word has length 11 [2018-06-22 04:38:47,301 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:38:47,301 INFO ]: With dead ends: 13 [2018-06-22 04:38:47,301 INFO ]: Without dead ends: 13 [2018-06-22 04:38:47,301 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2018-06-22 04:38:47,302 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 04:38:47,303 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 04:38:47,303 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 04:38:47,303 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 04:38:47,303 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-22 04:38:47,304 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:38:47,304 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 04:38:47,304 INFO ]: Interpolant automaton has 11 states. [2018-06-22 04:38:47,304 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 04:38:47,304 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 04:38:47,304 INFO ]: Found error trace [2018-06-22 04:38:47,304 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:38:47,304 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:38:47,305 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 4 times [2018-06-22 04:38:47,305 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:38:47,305 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:38:47,305 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:38:47,305 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:38:47,305 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:38:47,564 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:38:48,101 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:38:48,102 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:38:48,102 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:38:48,108 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 04:38:48,325 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 04:38:48,325 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:38:48,342 INFO ]: Computing forward predicates... [2018-06-22 04:38:48,851 WARN ]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:38:50,755 WARN ]: Spent 784.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 13 [2018-06-22 04:38:56,945 WARN ]: Spent 2.20 s on a formula simplification. DAG size of input: 261 DAG size of output: 113 [2018-06-22 04:39:08,351 WARN ]: Simplifying disjunction of 24610 conjuctions. This might take some time... Received shutdown request... [2018-06-22 04:39:36,606 INFO ]: Timeout while computing interpolants [2018-06-22 04:39:36,806 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:39:36,806 WARN ]: Verification canceled [2018-06-22 04:39:36,810 WARN ]: Timeout [2018-06-22 04:39:36,810 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:39:36 BoogieIcfgContainer [2018-06-22 04:39:36,810 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:39:36,811 INFO ]: Toolchain (without parser) took 62681.34 ms. Allocated memory was 306.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 240.6 MB in the beginning and 332.5 MB in the end (delta: -91.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:39:36,812 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 306.2 MB. Free memory is still 270.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:39:36,812 INFO ]: ChcToBoogie took 136.29 ms. Allocated memory is still 306.2 MB. Free memory was 238.6 MB in the beginning and 236.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:39:36,812 INFO ]: Boogie Preprocessor took 63.09 ms. Allocated memory is still 306.2 MB. Free memory was 236.6 MB in the beginning and 234.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:39:36,813 INFO ]: RCFGBuilder took 443.37 ms. Allocated memory is still 306.2 MB. Free memory was 234.6 MB in the beginning and 202.7 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 3.6 GB. [2018-06-22 04:39:36,813 INFO ]: TraceAbstraction took 62019.06 ms. Allocated memory was 306.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 202.7 MB in the beginning and 332.5 MB in the end (delta: -129.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 04:39:36,816 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 306.2 MB. Free memory is still 270.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 136.29 ms. Allocated memory is still 306.2 MB. Free memory was 238.6 MB in the beginning and 236.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 63.09 ms. Allocated memory is still 306.2 MB. Free memory was 236.6 MB in the beginning and 234.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 443.37 ms. Allocated memory is still 306.2 MB. Free memory was 234.6 MB in the beginning and 202.7 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 3.6 GB. * TraceAbstraction took 62019.06 ms. Allocated memory was 306.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 202.7 MB in the beginning and 332.5 MB in the end (delta: -129.8 MB). Peak memory consumption was 1.2 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 13 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 24610 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 61.9s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 3.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 4 SDslu, 69 SDs, 0 SdLazy, 31 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=4, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 1970 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1305 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/34 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/s3_srvr_2_BUG.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-39-36-829.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_2_BUG.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-39-36-829.csv Completed graceful shutdown