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_4.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:40:35,682 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:40:35,686 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:40:35,701 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:40:35,701 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:40:35,702 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:40:35,705 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:40:35,711 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:40:35,713 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:40:35,713 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:40:35,716 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:40:35,716 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:40:35,717 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:40:35,718 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:40:35,718 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:40:35,721 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:40:35,723 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:40:35,732 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:40:35,733 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:40:35,734 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:40:35,735 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:40:35,741 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:40:35,741 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:40:35,741 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:40:35,742 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:40:35,743 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:40:35,743 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:40:35,746 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:40:35,747 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:40:35,747 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:40:35,747 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:40:35,748 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:40:35,748 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:40:35,752 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:40:35,753 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:40:35,753 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:40:35,774 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:40:35,774 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:40:35,776 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:40:35,776 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:40:35,777 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:40:35,777 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:40:35,777 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:40:35,778 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:40:35,778 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:40:35,778 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:40:35,778 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:40:35,779 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:40:35,779 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:40:35,779 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:40:35,779 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:40:35,779 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:40:35,779 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:40:35,784 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:40:35,784 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:40:35,841 INFO ]: Repository-Root is: /tmp [2018-06-22 04:40:35,857 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:40:35,862 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:40:35,863 INFO ]: Initializing SmtParser... [2018-06-22 04:40:35,864 INFO ]: SmtParser initialized [2018-06-22 04:40:35,864 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_4.cil.smt2 [2018-06-22 04:40:35,866 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 04:40:35,951 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_4.cil.smt2 unknown [2018-06-22 04:40:36,590 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_4.cil.smt2 [2018-06-22 04:40:36,604 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:40:36,610 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:40:36,610 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:40:36,610 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:40:36,611 INFO ]: ChcToBoogie initialized [2018-06-22 04:40:36,623 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:40:36" (1/1) ... [2018-06-22 04:40:36,749 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:40:36 Unit [2018-06-22 04:40:36,749 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:40:36,750 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:40:36,750 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:40:36,750 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:40:36,784 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:40:36" (1/1) ... [2018-06-22 04:40:36,784 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:40:36" (1/1) ... [2018-06-22 04:40:36,795 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:40:36" (1/1) ... [2018-06-22 04:40:36,795 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:40:36" (1/1) ... [2018-06-22 04:40:36,808 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:40:36" (1/1) ... [2018-06-22 04:40:36,810 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:40:36" (1/1) ... [2018-06-22 04:40:36,814 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:40:36" (1/1) ... [2018-06-22 04:40:36,819 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:40:36,819 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:40:36,819 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:40:36,820 INFO ]: RCFGBuilder initialized [2018-06-22 04:40:36,820 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:40:36" (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 04:40:36,835 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:40:36,835 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:40:36,835 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:40:36,835 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:40:36,835 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:40:36,835 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 04:40:37,301 INFO ]: Using library mode [2018-06-22 04:40:37,302 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:40:37 BoogieIcfgContainer [2018-06-22 04:40:37,302 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:40:37,303 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:40:37,303 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:40:37,307 INFO ]: TraceAbstraction initialized [2018-06-22 04:40:37,307 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:40:36" (1/3) ... [2018-06-22 04:40:37,308 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171b2b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:40:37, skipping insertion in model container [2018-06-22 04:40:37,308 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:40:36" (2/3) ... [2018-06-22 04:40:37,308 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171b2b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:40:37, skipping insertion in model container [2018-06-22 04:40:37,308 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:40:37" (3/3) ... [2018-06-22 04:40:37,317 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:40:37,327 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:40:37,335 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:40:37,372 INFO ]: Using default assertion order modulation [2018-06-22 04:40:37,373 INFO ]: Interprodecural is true [2018-06-22 04:40:37,373 INFO ]: Hoare is false [2018-06-22 04:40:37,373 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:40:37,373 INFO ]: Backedges is TWOTRACK [2018-06-22 04:40:37,373 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:40:37,373 INFO ]: Difference is false [2018-06-22 04:40:37,373 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:40:37,373 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:40:37,386 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:40:37,396 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:40:37,396 INFO ]: Found error trace [2018-06-22 04:40:37,397 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:40:37,397 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:40:37,402 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 04:40:37,405 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:40:37,405 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:40:37,439 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:40:37,439 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:40:37,439 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:40:37,512 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:40:37,644 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:40:37,647 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:40:37,648 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:40:37,650 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:40:37,661 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:40:37,662 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:40:37,664 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:40:37,767 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:40:37,768 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:40:37,773 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:40:37,775 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:40:37,775 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:40:37,784 INFO ]: With dead ends: 9 [2018-06-22 04:40:37,784 INFO ]: Without dead ends: 9 [2018-06-22 04:40:37,789 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 04:40:37,806 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:40:37,823 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:40:37,824 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:40:37,825 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:40:37,826 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:40:37,826 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:40:37,826 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:40:37,826 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:40:37,826 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:40:37,826 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:40:37,827 INFO ]: Found error trace [2018-06-22 04:40:37,827 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:40:37,827 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:40:37,827 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 04:40:37,827 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:40:37,828 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:40:37,828 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:40:37,828 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:40:37,828 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:40:38,006 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:40:38,212 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:40:38,212 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:40:38,212 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 04:40:38,224 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:40:38,393 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:40:38,406 INFO ]: Computing forward predicates... [2018-06-22 04:40:38,954 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:40:38,976 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:40:38,976 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 04:40:38,976 INFO ]: Interpolant automaton has 5 states [2018-06-22 04:40:38,976 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 04:40:38,976 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 04:40:38,977 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 04:40:39,161 WARN ]: Spent 125.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 5 [2018-06-22 04:40:39,379 WARN ]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 04:40:39,401 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:40:39,401 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:40:39,401 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 04:40:39,401 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 04:40:39,401 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:40:39,401 INFO ]: With dead ends: 11 [2018-06-22 04:40:39,401 INFO ]: Without dead ends: 11 [2018-06-22 04:40:39,402 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-06-22 04:40:39,402 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:40:39,403 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:40:39,403 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:40:39,404 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:40:39,404 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 04:40:39,404 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:40:39,404 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:40:39,404 INFO ]: Interpolant automaton has 5 states. [2018-06-22 04:40:39,404 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:40:39,404 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:40:39,404 INFO ]: Found error trace [2018-06-22 04:40:39,404 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:40:39,404 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:40:39,404 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-22 04:40:39,404 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:40:39,404 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:40:39,405 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:40:39,405 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:40:39,405 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:40:39,639 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:40:40,260 WARN ]: Spent 247.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 3 [2018-06-22 04:40:40,373 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:40:40,373 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:40:40,373 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 04:40:40,380 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:40:40,557 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:40:40,558 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:40:40,571 INFO ]: Computing forward predicates... [2018-06-22 04:40:42,057 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-06-22 04:40:42,059 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:40:42,082 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:40:42,082 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 04:40:42,082 INFO ]: Interpolant automaton has 9 states [2018-06-22 04:40:42,083 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 04:40:42,083 INFO ]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-06-22 04:40:42,083 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-06-22 04:40:42,351 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:40:42,352 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 04:40:42,352 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 04:40:42,352 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-22 04:40:42,352 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:40:42,352 INFO ]: With dead ends: 13 [2018-06-22 04:40:42,352 INFO ]: Without dead ends: 13 [2018-06-22 04:40:42,353 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-06-22 04:40:42,353 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 04:40:42,354 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 04:40:42,354 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 04:40:42,355 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 04:40:42,355 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 04:40:42,355 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:40:42,355 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 04:40:42,355 INFO ]: Interpolant automaton has 9 states. [2018-06-22 04:40:42,355 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 04:40:42,355 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 04:40:42,355 INFO ]: Found error trace [2018-06-22 04:40:42,355 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:40:42,355 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:40:42,356 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 3 times [2018-06-22 04:40:42,356 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:40:42,356 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:40:42,356 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:40:42,356 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:40:42,357 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:40:42,593 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:40:43,162 WARN ]: Spent 169.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 3 [2018-06-22 04:40:43,351 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:40:43,351 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:40:43,351 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 04:40:43,360 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:40:43,511 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 04:40:43,511 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:40:43,527 INFO ]: Computing forward predicates... [2018-06-22 04:40:45,152 WARN ]: Spent 591.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 11 [2018-06-22 04:40:54,489 WARN ]: Spent 4.31 s on a formula simplification. DAG size of input: 341 DAG size of output: 153 Received shutdown request... [2018-06-22 04:41:41,803 INFO ]: Timeout while computing interpolants [2018-06-22 04:41:42,008 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:41:42,008 WARN ]: Verification canceled [2018-06-22 04:41:42,012 WARN ]: Timeout [2018-06-22 04:41:42,012 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:41:42 BoogieIcfgContainer [2018-06-22 04:41:42,012 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:41:42,013 INFO ]: Toolchain (without parser) took 65408.62 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 238.5 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 04:41:42,014 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 304.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:41:42,014 INFO ]: ChcToBoogie took 139.19 ms. Allocated memory is still 304.1 MB. Free memory was 237.5 MB in the beginning and 234.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:41:42,015 INFO ]: Boogie Preprocessor took 69.15 ms. Allocated memory is still 304.1 MB. Free memory was 234.5 MB in the beginning and 232.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:41:42,015 INFO ]: RCFGBuilder took 482.57 ms. Allocated memory is still 304.1 MB. Free memory was 232.5 MB in the beginning and 200.5 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:41:42,015 INFO ]: TraceAbstraction took 64708.77 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 200.5 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 04:41:42,018 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 304.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 139.19 ms. Allocated memory is still 304.1 MB. Free memory was 237.5 MB in the beginning and 234.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 69.15 ms. Allocated memory is still 304.1 MB. Free memory was 234.5 MB in the beginning and 232.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 482.57 ms. Allocated memory is still 304.1 MB. Free memory was 232.5 MB in the beginning and 200.5 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 64708.77 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 200.5 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. * 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 XnfDer was eliminating 1773 quantified variables from 88 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 64.6s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 1 SDslu, 43 SDs, 0 SdLazy, 21 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 849 SizeOfPredicates, 5 NumberOfNonLiveVariables, 750 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/14 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_4.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-41-42-028.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_4.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-41-42-028.csv Completed graceful shutdown