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_3.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:39:39,540 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:39:39,541 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:39:39,552 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:39:39,553 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:39:39,554 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:39:39,555 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:39:39,557 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:39:39,559 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:39:39,560 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:39:39,561 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:39:39,561 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:39:39,564 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:39:39,565 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:39:39,569 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:39:39,570 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:39:39,572 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:39:39,582 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:39:39,584 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:39:39,585 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:39:39,586 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:39:39,595 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:39:39,595 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:39:39,595 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:39:39,596 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:39:39,597 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:39:39,598 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:39:39,598 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:39:39,602 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:39:39,602 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:39:39,603 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:39:39,604 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:39:39,604 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:39:39,605 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:39:39,608 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:39:39,608 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:39:39,629 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:39:39,630 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:39:39,630 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:39:39,630 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:39:39,632 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:39:39,632 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:39:39,633 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:39:39,633 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:39:39,633 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:39:39,633 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:39:39,633 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:39:39,634 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:39:39,634 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:39:39,634 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:39:39,634 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:39:39,634 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:39:39,635 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:39:39,637 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:39:39,637 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:39:39,689 INFO ]: Repository-Root is: /tmp [2018-06-22 04:39:39,709 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:39:39,715 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:39:39,717 INFO ]: Initializing SmtParser... [2018-06-22 04:39:39,717 INFO ]: SmtParser initialized [2018-06-22 04:39:39,718 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_3.cil.smt2 [2018-06-22 04:39:39,719 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 04:39:39,817 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_3.cil.smt2 unknown [2018-06-22 04:39:40,491 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_3.cil.smt2 [2018-06-22 04:39:40,501 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:39:40,511 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:39:40,517 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:39:40,517 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:39:40,517 INFO ]: ChcToBoogie initialized [2018-06-22 04:39:40,521 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:39:40" (1/1) ... [2018-06-22 04:39:40,620 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:39:40 Unit [2018-06-22 04:39:40,621 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:39:40,621 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:39:40,621 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:39:40,621 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:39:40,637 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:39:40" (1/1) ... [2018-06-22 04:39:40,637 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:39:40" (1/1) ... [2018-06-22 04:39:40,646 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:39:40" (1/1) ... [2018-06-22 04:39:40,646 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:39:40" (1/1) ... [2018-06-22 04:39:40,661 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:39:40" (1/1) ... [2018-06-22 04:39:40,663 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:39:40" (1/1) ... [2018-06-22 04:39:40,668 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:39:40" (1/1) ... [2018-06-22 04:39:40,674 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:39:40,674 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:39:40,674 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:39:40,675 INFO ]: RCFGBuilder initialized [2018-06-22 04:39:40,676 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:39:40" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:39:40,696 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:39:40,696 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:39:40,696 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:39:40,696 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:39:40,696 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:39:40,696 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 04:39:41,142 INFO ]: Using library mode [2018-06-22 04:39:41,143 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:39:41 BoogieIcfgContainer [2018-06-22 04:39:41,143 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:39:41,144 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:39:41,144 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:39:41,147 INFO ]: TraceAbstraction initialized [2018-06-22 04:39:41,148 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:39:40" (1/3) ... [2018-06-22 04:39:41,148 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e45d957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:39:41, skipping insertion in model container [2018-06-22 04:39:41,148 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:39:40" (2/3) ... [2018-06-22 04:39:41,149 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e45d957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:39:41, skipping insertion in model container [2018-06-22 04:39:41,149 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:39:41" (3/3) ... [2018-06-22 04:39:41,151 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:39:41,160 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:39:41,169 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:39:41,221 INFO ]: Using default assertion order modulation [2018-06-22 04:39:41,222 INFO ]: Interprodecural is true [2018-06-22 04:39:41,222 INFO ]: Hoare is false [2018-06-22 04:39:41,222 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:39:41,222 INFO ]: Backedges is TWOTRACK [2018-06-22 04:39:41,222 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:39:41,222 INFO ]: Difference is false [2018-06-22 04:39:41,222 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:39:41,222 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:39:41,239 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:39:41,249 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:39:41,249 INFO ]: Found error trace [2018-06-22 04:39:41,250 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:39:41,250 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:39:41,254 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 04:39:41,255 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:39:41,255 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:39:41,290 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:39:41,290 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:39:41,290 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:39:41,362 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:39:41,476 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:39:41,478 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:39:41,478 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:39:41,479 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:39:41,490 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:39:41,491 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:39:41,493 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:39:41,595 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:39:41,595 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:39:41,595 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:39:41,596 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:39:41,597 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:39:41,605 INFO ]: With dead ends: 9 [2018-06-22 04:39:41,605 INFO ]: Without dead ends: 9 [2018-06-22 04:39:41,607 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 04:39:41,619 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:39:41,634 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:39:41,635 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:39:41,645 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:39:41,647 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:39:41,647 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:39:41,647 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:39:41,647 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:39:41,647 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:39:41,647 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:39:41,647 INFO ]: Found error trace [2018-06-22 04:39:41,647 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:39:41,647 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:39:41,648 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 04:39:41,648 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:39:41,648 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:39:41,649 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:39:41,649 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:39:41,649 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:39:41,829 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:39:42,075 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:39:42,075 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:39:42,075 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 04:39:42,085 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:39:42,230 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:39:42,247 INFO ]: Computing forward predicates... [2018-06-22 04:39:43,052 WARN ]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:39:43,068 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:39:43,102 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:39:43,103 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 04:39:43,103 INFO ]: Interpolant automaton has 5 states [2018-06-22 04:39:43,103 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 04:39:43,103 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 04:39:43,103 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 04:39:43,509 WARN ]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 04:39:43,595 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:39:43,595 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:39:43,595 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 04:39:43,595 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 04:39:43,595 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:39:43,596 INFO ]: With dead ends: 11 [2018-06-22 04:39:43,596 INFO ]: Without dead ends: 11 [2018-06-22 04:39:43,596 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-06-22 04:39:43,597 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:39:43,598 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:39:43,598 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:39:43,598 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:39:43,598 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 04:39:43,598 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:39:43,598 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:39:43,598 INFO ]: Interpolant automaton has 5 states. [2018-06-22 04:39:43,598 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:39:43,599 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:39:43,599 INFO ]: Found error trace [2018-06-22 04:39:43,599 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:39:43,599 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:39:43,599 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 04:39:43,599 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:39:43,599 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:39:43,600 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:39:43,600 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:39:43,600 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:39:43,779 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:39:44,307 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:39:44,307 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:39:44,434 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 04:39:44,442 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:39:44,596 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:39:44,596 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:39:44,607 INFO ]: Computing forward predicates... [2018-06-22 04:39:46,505 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:39:46,526 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:39:46,526 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 04:39:46,527 INFO ]: Interpolant automaton has 9 states [2018-06-22 04:39:46,527 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 04:39:46,527 INFO ]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-06-22 04:39:46,527 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-06-22 04:39:46,725 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:39:46,725 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 04:39:46,726 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 04:39:46,726 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-22 04:39:46,726 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:39:46,726 INFO ]: With dead ends: 13 [2018-06-22 04:39:46,726 INFO ]: Without dead ends: 13 [2018-06-22 04:39:46,726 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2018-06-22 04:39:46,726 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 04:39:46,727 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 04:39:46,727 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 04:39:46,727 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 04:39:46,728 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 04:39:46,728 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:39:46,728 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 04:39:46,728 INFO ]: Interpolant automaton has 9 states. [2018-06-22 04:39:46,728 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 04:39:46,728 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 04:39:46,728 INFO ]: Found error trace [2018-06-22 04:39:46,728 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:39:46,728 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:39:46,728 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 3 times [2018-06-22 04:39:46,728 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:39:46,728 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:39:46,729 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:39:46,729 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:39:46,729 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:39:46,944 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:39:47,570 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:39:47,570 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:39:47,570 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 04:39:47,577 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:39:47,799 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 04:39:47,799 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:39:47,820 INFO ]: Computing forward predicates... [2018-06-22 04:39:48,235 WARN ]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 04:39:49,215 WARN ]: Spent 418.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 19 [2018-06-22 04:39:57,968 WARN ]: Spent 446.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 28 [2018-06-22 04:40:08,870 WARN ]: Spent 1.29 s on a formula simplification. DAG size of input: 223 DAG size of output: 60 [2018-06-22 04:40:08,968 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:40:09,005 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:40:09,005 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 04:40:09,005 INFO ]: Interpolant automaton has 13 states [2018-06-22 04:40:09,005 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 04:40:09,006 INFO ]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2018-06-22 04:40:09,006 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 13 states. [2018-06-22 04:40:09,403 WARN ]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-06-22 04:40:09,404 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:40:09,404 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-22 04:40:09,404 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 04:40:09,404 INFO ]: Start accepts. Automaton has 13 states. Word has length 12 [2018-06-22 04:40:09,404 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:40:09,405 INFO ]: With dead ends: 16 [2018-06-22 04:40:09,405 INFO ]: Without dead ends: 16 [2018-06-22 04:40:09,407 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=114, Invalid=192, Unknown=0, NotChecked=0, Total=306 [2018-06-22 04:40:09,407 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-22 04:40:09,409 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-22 04:40:09,409 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-22 04:40:09,409 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-22 04:40:09,409 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2018-06-22 04:40:09,409 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:40:09,409 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-22 04:40:09,410 INFO ]: Interpolant automaton has 13 states. [2018-06-22 04:40:09,410 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-22 04:40:09,410 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 04:40:09,410 INFO ]: Found error trace [2018-06-22 04:40:09,410 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:40:09,410 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:40:09,410 INFO ]: Analyzing trace with hash 1051911180, now seen corresponding path program 4 times [2018-06-22 04:40:09,410 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:40:09,410 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:40:09,413 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:40:09,413 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:40:09,413 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:40:09,911 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:40:10,789 WARN ]: Spent 221.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 23 [2018-06-22 04:40:11,532 WARN ]: Spent 596.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 44 [2018-06-22 04:40:11,704 WARN ]: Spent 156.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 26 [2018-06-22 04:40:11,772 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:40:11,773 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:40:11,773 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 04:40:11,779 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 04:40:12,081 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 04:40:12,081 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:40:12,102 INFO ]: Computing forward predicates... [2018-06-22 04:40:13,810 WARN ]: Spent 412.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 19 [2018-06-22 04:40:18,167 WARN ]: Spent 451.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 28 Received shutdown request... [2018-06-22 04:40:46,453 INFO ]: Timeout while computing interpolants [2018-06-22 04:40:46,654 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:40:46,654 WARN ]: Verification canceled [2018-06-22 04:40:46,658 WARN ]: Timeout [2018-06-22 04:40:46,658 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:40:46 BoogieIcfgContainer [2018-06-22 04:40:46,658 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:40:46,659 INFO ]: Toolchain (without parser) took 66157.66 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 242.7 MB in the beginning and 943.7 MB in the end (delta: -701.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:40:46,667 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:40:46,667 INFO ]: ChcToBoogie took 103.77 ms. Allocated memory is still 308.3 MB. Free memory was 241.7 MB in the beginning and 238.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:40:46,667 INFO ]: Boogie Preprocessor took 52.41 ms. Allocated memory is still 308.3 MB. Free memory was 238.7 MB in the beginning and 236.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:40:46,668 INFO ]: RCFGBuilder took 468.16 ms. Allocated memory is still 308.3 MB. Free memory was 236.7 MB in the beginning and 204.7 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:40:46,668 INFO ]: TraceAbstraction took 65513.99 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 204.7 MB in the beginning and 943.7 MB in the end (delta: -738.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:40:46,671 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 103.77 ms. Allocated memory is still 308.3 MB. Free memory was 241.7 MB in the beginning and 238.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 52.41 ms. Allocated memory is still 308.3 MB. Free memory was 238.7 MB in the beginning and 236.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 468.16 ms. Allocated memory is still 308.3 MB. Free memory was 236.7 MB in the beginning and 204.7 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 65513.99 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 204.7 MB in the beginning and 943.7 MB in the end (delta: -738.9 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 16 with TraceHistMax 8, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 930 quantified variables from 82 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 65.4s OverallTime, 5 OverallIterations, 8 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 4 SDslu, 71 SDs, 0 SdLazy, 36 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 0.9s SatisfiabilityAnalysisTime, 25.4s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 4338 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1395 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/44 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_3.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-40-46-702.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_3.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-40-46-702.csv Completed graceful shutdown