java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/ctigar/svd3.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 15:40:03,583 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 15:40:03,585 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 15:40:03,604 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 15:40:03,604 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 15:40:03,605 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 15:40:03,607 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 15:40:03,608 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 15:40:03,610 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 15:40:03,611 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 15:40:03,612 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 15:40:03,612 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 15:40:03,613 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 15:40:03,614 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 15:40:03,615 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 15:40:03,616 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 15:40:03,619 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 15:40:03,621 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 15:40:03,623 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 15:40:03,624 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 15:40:03,625 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 15:40:03,627 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 15:40:03,627 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 15:40:03,628 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 15:40:03,629 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 15:40:03,630 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 15:40:03,630 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 15:40:03,631 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 15:40:03,632 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 15:40:03,632 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 15:40:03,633 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 15:40:03,634 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 15:40:03,634 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 15:40:03,635 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 15:40:03,636 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 15:40:03,636 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 15:40:03,650 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 15:40:03,650 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 15:40:03,651 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 15:40:03,651 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 15:40:03,652 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 15:40:03,652 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 15:40:03,653 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 15:40:03,653 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 15:40:03,653 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 15:40:03,653 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 15:40:03,654 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:40:03,654 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 15:40:03,654 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 15:40:03,654 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 15:40:03,655 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 15:40:03,655 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 15:40:03,655 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 15:40:03,655 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 15:40:03,656 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 15:40:03,657 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 15:40:03,658 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 15:40:03,707 INFO ]: Repository-Root is: /tmp [2018-06-22 15:40:03,723 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 15:40:03,727 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 15:40:03,728 INFO ]: Initializing SmtParser... [2018-06-22 15:40:03,729 INFO ]: SmtParser initialized [2018-06-22 15:40:03,729 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/svd3.c.smt2 [2018-06-22 15:40:03,731 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 15:40:03,823 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/svd3.c.smt2 unknown [2018-06-22 15:40:04,236 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/svd3.c.smt2 [2018-06-22 15:40:04,241 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 15:40:04,248 INFO ]: Walking toolchain with 4 elements. [2018-06-22 15:40:04,248 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 15:40:04,248 INFO ]: Initializing ChcToBoogie... [2018-06-22 15:40:04,248 INFO ]: ChcToBoogie initialized [2018-06-22 15:40:04,252 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:40:04" (1/1) ... [2018-06-22 15:40:04,300 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:40:04 Unit [2018-06-22 15:40:04,300 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 15:40:04,302 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 15:40:04,303 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 15:40:04,303 INFO ]: Boogie Preprocessor initialized [2018-06-22 15:40:04,324 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:40:04" (1/1) ... [2018-06-22 15:40:04,324 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:40:04" (1/1) ... [2018-06-22 15:40:04,335 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:40:04" (1/1) ... [2018-06-22 15:40:04,335 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:40:04" (1/1) ... [2018-06-22 15:40:04,346 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:40:04" (1/1) ... [2018-06-22 15:40:04,348 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:40:04" (1/1) ... [2018-06-22 15:40:04,350 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:40:04" (1/1) ... [2018-06-22 15:40:04,352 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 15:40:04,352 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 15:40:04,352 INFO ]: Initializing RCFGBuilder... [2018-06-22 15:40:04,352 INFO ]: RCFGBuilder initialized [2018-06-22 15:40:04,353 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:40:04" (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 15:40:04,374 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 15:40:04,374 INFO ]: Found specification of procedure False [2018-06-22 15:40:04,374 INFO ]: Found implementation of procedure False [2018-06-22 15:40:04,374 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 15:40:04,374 INFO ]: Found specification of procedure state [2018-06-22 15:40:04,374 INFO ]: Found implementation of procedure state [2018-06-22 15:40:04,374 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 15:40:04,374 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 15:40:04,374 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 15:40:04,594 INFO ]: Using library mode [2018-06-22 15:40:04,595 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:40:04 BoogieIcfgContainer [2018-06-22 15:40:04,595 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 15:40:04,597 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 15:40:04,597 INFO ]: Initializing TraceAbstraction... [2018-06-22 15:40:04,600 INFO ]: TraceAbstraction initialized [2018-06-22 15:40:04,600 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:40:04" (1/3) ... [2018-06-22 15:40:04,601 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186320ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 03:40:04, skipping insertion in model container [2018-06-22 15:40:04,601 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:40:04" (2/3) ... [2018-06-22 15:40:04,601 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186320ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:40:04, skipping insertion in model container [2018-06-22 15:40:04,602 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:40:04" (3/3) ... [2018-06-22 15:40:04,603 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 15:40:04,613 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 15:40:04,624 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 15:40:04,666 INFO ]: Using default assertion order modulation [2018-06-22 15:40:04,690 INFO ]: Interprodecural is true [2018-06-22 15:40:04,690 INFO ]: Hoare is false [2018-06-22 15:40:04,690 INFO ]: Compute interpolants for FPandBP [2018-06-22 15:40:04,690 INFO ]: Backedges is TWOTRACK [2018-06-22 15:40:04,690 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 15:40:04,690 INFO ]: Difference is false [2018-06-22 15:40:04,690 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 15:40:04,690 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 15:40:04,705 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 15:40:04,719 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 15:40:04,719 INFO ]: Found error trace [2018-06-22 15:40:04,721 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:40:04,721 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:40:04,727 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 15:40:04,730 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:40:04,730 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:40:04,769 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:40:04,769 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:40:04,769 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:40:04,799 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:40:04,968 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 15:40:04,977 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 15:40:04,978 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 15:40:04,980 INFO ]: Interpolant automaton has 4 states [2018-06-22 15:40:04,998 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 15:40:04,999 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:40:05,001 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 15:40:05,135 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:40:05,135 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:40:05,136 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 15:40:05,137 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 15:40:05,137 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:40:05,148 INFO ]: With dead ends: 13 [2018-06-22 15:40:05,148 INFO ]: Without dead ends: 13 [2018-06-22 15:40:05,150 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:40:05,165 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 15:40:05,185 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 15:40:05,186 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 15:40:05,187 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 15:40:05,188 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 15:40:05,188 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:40:05,188 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 15:40:05,188 INFO ]: Interpolant automaton has 4 states. [2018-06-22 15:40:05,189 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 15:40:05,191 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 15:40:05,191 INFO ]: Found error trace [2018-06-22 15:40:05,191 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:40:05,191 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:40:05,192 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 15:40:05,192 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:40:05,192 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:40:05,193 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:40:05,193 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:40:05,193 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:40:05,268 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:40:05,472 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:40:05,472 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:40:05,472 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 15:40:05,480 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:40:05,542 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:40:05,552 INFO ]: Computing forward predicates... [2018-06-22 15:40:06,034 WARN ]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 15:40:06,447 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:40:06,489 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:40:06,489 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 15:40:06,490 INFO ]: Interpolant automaton has 9 states [2018-06-22 15:40:06,490 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 15:40:06,490 INFO ]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-22 15:40:06,490 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 15:40:07,051 WARN ]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 15:40:07,365 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:40:07,366 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 15:40:07,366 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:40:07,366 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 15:40:07,367 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:40:07,367 INFO ]: With dead ends: 15 [2018-06-22 15:40:07,367 INFO ]: Without dead ends: 15 [2018-06-22 15:40:07,368 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-06-22 15:40:07,368 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 15:40:07,372 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 15:40:07,372 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 15:40:07,372 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 15:40:07,372 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 15:40:07,373 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:40:07,373 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 15:40:07,373 INFO ]: Interpolant automaton has 9 states. [2018-06-22 15:40:07,373 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 15:40:07,373 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 15:40:07,373 INFO ]: Found error trace [2018-06-22 15:40:07,373 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:40:07,373 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:40:07,374 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 15:40:07,374 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:40:07,374 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:40:07,375 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:40:07,375 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:40:07,375 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:40:07,425 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:40:07,833 WARN ]: Spent 264.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-06-22 15:40:08,282 WARN ]: Spent 176.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-06-22 15:40:08,290 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:40:08,290 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:40:08,290 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 15:40:08,301 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:40:08,348 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:40:08,348 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:40:08,351 INFO ]: Computing forward predicates... [2018-06-22 15:40:08,524 WARN ]: Spent 118.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-06-22 15:40:08,683 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:40:08,707 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:40:08,707 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-22 15:40:08,708 INFO ]: Interpolant automaton has 11 states [2018-06-22 15:40:08,708 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 15:40:08,708 INFO ]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-06-22 15:40:08,709 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2018-06-22 15:40:08,905 WARN ]: Spent 155.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2018-06-22 15:40:09,121 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:40:09,121 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:40:09,121 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:40:09,121 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 15:40:09,121 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:40:09,122 INFO ]: With dead ends: 17 [2018-06-22 15:40:09,122 INFO ]: Without dead ends: 17 [2018-06-22 15:40:09,123 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-06-22 15:40:09,123 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 15:40:09,125 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 15:40:09,125 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 15:40:09,126 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 15:40:09,126 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 15:40:09,126 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:40:09,126 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 15:40:09,126 INFO ]: Interpolant automaton has 11 states. [2018-06-22 15:40:09,126 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 15:40:09,127 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 15:40:09,127 INFO ]: Found error trace [2018-06-22 15:40:09,127 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:40:09,127 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:40:09,127 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 15:40:09,127 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:40:09,127 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:40:09,128 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:40:09,128 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:40:09,128 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:40:09,193 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:40:09,434 WARN ]: Spent 104.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2018-06-22 15:40:09,639 WARN ]: Spent 147.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-06-22 15:40:09,722 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:40:09,722 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:40:09,722 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) [2018-06-22 15:40:09,736 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:40:09,811 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 15:40:09,811 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:40:09,815 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 15:41:13,836 WARN ]: Removed 2 from assertion stack [2018-06-22 15:41:13,836 INFO ]: Timeout while computing interpolants [2018-06-22 15:41:14,038 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:41:14,038 WARN ]: Verification canceled [2018-06-22 15:41:14,042 WARN ]: Timeout [2018-06-22 15:41:14,042 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:41:14 BoogieIcfgContainer [2018-06-22 15:41:14,042 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 15:41:14,043 INFO ]: Toolchain (without parser) took 69801.40 ms. Allocated memory was 308.8 MB in the beginning and 1.3 GB in the end (delta: 987.2 MB). Free memory was 259.4 MB in the beginning and 1.2 GB in the end (delta: -919.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 15:41:14,044 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:41:14,044 INFO ]: ChcToBoogie took 54.04 ms. Allocated memory is still 308.8 MB. Free memory was 257.4 MB in the beginning and 255.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:41:14,045 INFO ]: Boogie Preprocessor took 49.35 ms. Allocated memory is still 308.8 MB. Free memory is still 255.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:41:14,045 INFO ]: RCFGBuilder took 243.02 ms. Allocated memory is still 308.8 MB. Free memory was 255.4 MB in the beginning and 243.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:41:14,046 INFO ]: TraceAbstraction took 69445.12 ms. Allocated memory was 308.8 MB in the beginning and 1.3 GB in the end (delta: 987.2 MB). Free memory was 243.4 MB in the beginning and 1.2 GB in the end (delta: -935.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. [2018-06-22 15:41:14,049 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 308.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 54.04 ms. Allocated memory is still 308.8 MB. Free memory was 257.4 MB in the beginning and 255.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 49.35 ms. Allocated memory is still 308.8 MB. Free memory is still 255.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 243.02 ms. Allocated memory is still 308.8 MB. Free memory was 255.4 MB in the beginning and 243.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 69445.12 ms. Allocated memory was 308.8 MB in the beginning and 1.3 GB in the end (delta: 987.2 MB). Free memory was 243.4 MB in the beginning and 1.2 GB in the end (delta: -935.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 2770. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 69.3s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 21 SDslu, 88 SDs, 0 SdLazy, 63 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 3744 SizeOfPredicates, 55 NumberOfNonLiveVariables, 254 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/26 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/svd3.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_15-41-14-059.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/svd3.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_15-41-14-059.csv Completed graceful shutdown